KITCHEN APPLIANCE, CUTTER HOUSING AND CUTTING ATTACHMENT THEREFOR

Abstract

 The invention relates to a cutting attachment for a kitchen appliance, comprising: a first set of members having cutting edges, wherein the cutting edge of at least one of the first set of members comprises at least a portion arranged at a first height; and a second set of members having cutting edges, wherein at least a portion of the cutting edge of at least one of the second set of members is arranged at a second height, the second height being different to the first height; wherein the first set of members and the second set of members form an array of apertures between the cutting edges; wherein the cutting edge of at least one of the first set of members comprises at least a portion arranged at a third height, the third height being different to the first height, and wherein at least one of said at least a portion arranged at the first height and said at least a portion arranged at the third height extends over at least one of the apertures.

Description

[0001] The present invention relates to a cutting attachment for a kitchen appliance, a cutter housing for a kitchen appliance, and a kitchen appliance.

[0002] Dicing a working medium (e.g. food) is a process of cutting it into cuboid or 3D-rectangular shaped portions (also known as hyperrectangle, right rectangular prism, rectangular cuboid, or rectangular parallelepiped shapes). This has the effect of making the food easier to process (e.g. cook or eat directly) as it has an increased surface area and is in smaller portions.

[0003] One way of achieving this is by forcing the article to be diced (e.g. a potato) through a grid of cross-cutting blades. Each blade typically presents a sharpened cutting edge towards the object to be cut, and acts to slice it as it is forced through the grid. As the object is further forced through the grid, the strips of it that have been sliced into 3-D rectangular shaped portions protrude from the other side of the grid. At this point a further blade, which may be either of a reciprocating blade or a rotating blade, cuts the strips off close to the grid.

[0004] One problem with such an arrangement is that it is difficult for a user to force the object to be cut through the grid, as the force must be sufficient simultaneously to drive multiple blades into the object to be cut. This also means that a large force must be applied against the grid and any supporting elements of the grid, meaning that the grid must be of sturdy construction and have a thick supporting frame, making the device bulky and expensive. The requirement of pushing the food with a large force against the grid can lead to the blades of the grid breaking and reduce the lifetime of the grid.

[0005] It is therefore desirable to provide a dicing arrangement capable of at least partially ameliorating the above-described issues.

[0006] Aspects and embodiments of the present invention are set out in the appended claims. These and other aspects and embodiments of the invention are also described herein.

[0007] According to an aspect of the invention, there is provided a cutting attachment (also referred to as a dicing arrangement) for a kitchen appliance, comprising: a first set of members having cutting edges, wherein the cutting edge of at least one of the first set of members comprises at least a portion arranged at a first height; and a second set of members having cutting edges, wherein at least a portion of the cutting edge of at least one of the second set of members is arranged at a second height, the second height being different to the first height; wherein the first set of members and the second set of members form an array of apertures between the cutting edges; wherein the cutting edge of at least one of the first set of members comprises at least a portion arranged at a third height, the third height being different to the first height, and wherein at least one of: said at least a portion arranged at the first height and said at least at portion arranged at the third height extends over at least one of the apertures.

[0008] By arranging the cutting edges in respective different sets at different first and second heights, the amount of force which is required to force food through the cutting attachment may be reduced. This effect may be improved by including at least a further portion of a cutting edge in the first set at a third height. The provision of said different heights within a single set of cutting edges may also improve control over the way in which food is cut, for example by guiding the food in a particular direction during cutting (e.g. away from the edges of the cutting attachment, or so as to spread the food across more of the cutting attachment). Including a portion at a first or third height which extends over at least one aperture may allow for the cutting of food to be controlled as described.

[0009] In use, food encounters cutting edges arranged at the first height before or after cutting edges arranged at the second height. As used herein, "height" preferably connotes height in the cutting direction, and/or the level at which the cutting edge is located. Therefore, it may be the level to which the member extends in the direction in which food is cut. Preferably, in normal use (i.e. when food is pushed downwards onto the cutting attachment), this is the vertical direction. Preferably, the height is the height of the member. In other examples, this may be different to the height of the member, for example, a member may be vertically shifted relative to other members (e.g. different members may extend to different heights above a base level).

[0010] As used herein, "extends over" preferably connotes that the at least a portion arranged at the third height or the at least a portion arranged at the first height has a length greater than a dimension of at least one of the apertures, preferably the width of at least one of the apertures. In some examples, at least one of said at least a portion arranged at the first height and said at least a portion arranged at the third height extends along at least one of the apertures. In some examples, at least one of said at least a portion arranged at the first height and said at least a portion arranged at the third height forms a wall of at least one of the apertures. In some examples, at least one of said at least a portion arranged at the first height and said at least a portion arranged at the third height extends over at least two apertures, optionally at least three apertures, optionally at least five apertures. Optionally, the at least a portion arranged at a third height may be referred to as at least a further portion arranged at a third height. Preferably, the members are flat, elongate members having a cutting edge and a (flat) guiding portion.

[0011] Preferably, one of the at least a portion arranged at the first height and the at least a portion arranged at the third height is positioned centrally in the cutting attachment. Preferably, the term "centrally" should be understood as being relative to the direction in which items to be cut are fed towards the cutting attachment.

[0012] Preferably, one of the at least a portion arranged at the first height and the at least a portion arranged at the third height is positioned centrally along a length of one of the first of members and the or second set of members.

[0013] In an embodiment, the third height is greater than the first height. Preferably, the third height is greater than the second height. Preferably, the third height is at least 2mm greater than the second height, preferably at least 4mm, more preferably at least 6mm, still more preferably at least 10mm.

[0014] Preferably, in cases where the third height is greater than the first height, the at least a portion arranged at the third height is positioned centrally along the length of the first set of members. Preferably, in cases where the first height is greater than the third height, the at least a portion arranged at the first height is positioned centrally along the length of the second set of members.

[0015] Preferably, the third height is at least 1mm greater than the first height, preferably at least 2mm, more preferably at least 3mm, still more preferably at least 5mm. Preferably, the third height is at least 10% greater than the first height above the base level, preferably at least 20%, more preferably at least 30%, still more preferably at least 50%.

[0016] In an embodiment, the first set of members comprises at least one member having a cutting edge arranged at the third height. Preferably, the portion arranged at the third height extends along the entire length of the member comprising the portion arranged at the third height.

[0017] Preferably, the at least one member extending to the third height is arranged generally centrally along the length of the members of the second set. Preferably, it is arranged centrally. Preferably, the at least one member extending to the third height is a middle member of the first set of members. As used herein, "middle" preferably connotes the middle member by count from the outermost members of the first set inwards. Preferably, if there is more than one member extending to the third height, the members extending to the third height are arranged in the middle of the first set of members. Preferably, in cases where the first set of members comprises an even number of members, the middle member refers to the middle two members.

[0018] In an embodiment, the first height is greater than the second height. Preferably, the difference between the first height and the third height is at least twice as great as the difference between the first height and the second height.

[0019] Preferably, the cutting edges of the first set of members are arranged at either the first height or the third height. Preferably, the entire length of all of the cutting edges of the first set of members is arranged at either the first height or the third height. Preferably, the first set of members further comprises at least one member extending to a height different to the first, second and third height.

[0020] Preferably, the height of members of the first set is symmetric about: the centre of the length of the members of the second set; the middle member of the first set; and/or the member of the first set extending to the greatest height. Preferably, the height of members of the first set decreases with each sequential member of the first set.

[0021] Preferably, the height of members of the first set decreases by a constant increment or proportion.

[0022] Preferably, the at least one member extending to the third height extends from the same base level as others of the first set. Preferably, all members of the first set extend from the same base level. Preferably, all members of the first set have the same height.

[0023] In an embodiment, the first height is less than the third height. Preferably, the second height is the same as the third height. Preferably, each member of the first set of members has a cutting edge comprising a portion arranged at the first height and a portion arranged at the third height.

[0024] Preferably, the portion arranged at the first height is arranged centrally along the length of the member comprising the portion. Preferably, the portion arranged at the first height is centred on a middle member of the second set of members.

[0025] Preferably, the entire length of the cutting edges of the first set of members consists of the portion arranged at the first height and the portion arranged at the third height. Preferably, the portion arranged at the third height may be separated by the portion arranged at the first height. Optionally, there may be a plurality of portions arranged at the third height.

[0026] Preferably, the portion arranged at the first height is arranged between intersections of the member of the first set with members of the second set.

[0027] Optionally, the portion arranged at the first height is separated from the portion arranged at the third height by a step or a slope.

[0028] Preferably, each member of the first set of members has a cutting edge comprising two portions arranged at the third height and a portion arranged at the first height; more preferably wherein the portion arranged at the first height is positioned between the portions arranged at the third height.

[0029] Preferably, at least one of said at least a portion arranged at the first height and said at least a portion arranged at the third height extends over at least half of the length of the at least one member. As used herein, "the member" refers to the member comprising the at least a portion arranged at the first height and the at least a portion arranged at the third height. Preferably, the at least one of said at least a portion arranged at the first height and said at least a portion arranged at the third height extends over at least two members, more preferably at least three members.

[0030] Preferably, the portion arranged at the third height extends from an end of the member comprising the portion. Preferably, the first set of members and/or the second set of members extend from a common base level (also referred to as the same base height). Preferably, the bases of each of the members are opposite to the cutting edges.

[0031] According to an aspect of the invention, there is provided a cutting attachment for a kitchen appliance, comprising: a first set of members having cutting edges, wherein the cutting edge of at least one of the first set of members comprises at least a portion arranged at a first height; and a second set of members having cutting edges, wherein at least a portion of the cutting edge of at least one of the second set of members is arranged at a second height, the second height being different to the first height; wherein, optionally, the first set of members and the second set of members form an array of apertures between the cutting edges; wherein the first set of members and the second set of members extend from a common base level. Providing members extending from a common base height may allow food to be guided through the apertures of the cutting attachment more regularly, and may reduce the distance over which food travels within a kitchen appliance without being guided (and before encountering a further processing device, such as a blade).

[0032] Preferably, members within a (or each) set extend parallel to each other (i.e. the cutting edges of the members are parallel to the cutting edges of other members in the same set). Preferably, the first set is not parallel to the second set. Preferably, the first set of members intersects at a right angle to the second set of members (i.e. the first set of members and the second set of members intersect such the cutting edges of members in the first set of members are perpendicular to the cutting edges of members in the second set of members).

[0033] Preferably, the cutting attachment further comprises an engagement formation for engaging the cutting attachment to the kitchen appliance. Preferably, the engagement formation comprises the ends of the members or the lower edges of the members. Preferably, the engagement formation is a frame configured to engage the members. Preferably, the ends of each of the members have the same dimensions for engagement with a feed tube (e.g. the same vertical height).

[0034] Preferably, the cutting attachment further comprises a (elongate) feed tube through which food may be inserted for cutting; wherein the first and second sets of members are located within or at an end of the feed tube.

[0035] According to an aspect of the invention, there is provided a cutting attachment for a kitchen appliance, comprising: a first set of members having cutting edges, wherein the cutting edge of at least one of the first set of members comprises at least a portion arranged at a first height; and a second set of members having cutting edges, wherein at least a portion of the cutting edge of at least one of the second set of members is arranged at a second height, the second height being different to the first height; wherein, optionally, the first set of members and the second set of members form an array of apertures between the cutting edges; a (elongate) feed tube through which food may be inserted for cutting; wherein the first and second sets of members are located within or at an end of the feed tube. Providing a feed tube may improve the ease by which a user can cut food using the cutting attachment, and may allow the cutting attachment to output food directly into a cutter housing of a kitchen appliance.

[0036] Preferably, the first and second sets of members are located closer to an aperture of the feed tube through which food exits the feed tube than an aperture of the feed tube through which food enters the feed tube. Preferably, the distance from the first and second sets of members to the aperture of the feed tube through which food enters the feed tube is at least approximately 2mm and is preferably approximately 3mm.

[0037] Preferably, the cutting attachment further comprises a pusher for driving food along the feed-tube, wherein the pusher comprises teeth dimensioned so as to fit through the apertures of the cutting attachment. Preferably, the cutting attachment further comprises a supporting frame for supporting the cutting attachment above a container. Preferably, the cutting attachment is removably attached to the feed tube.

[0038] Preferably, the portion arranged at the first height is located centrally to a feed tube. Preferably, the portion arranged at the third height abuts an inner wall of a feed tube.

[0039] Preferably, the first set of members and/or the second set of members comprise straight and/or level cutting edges. Optionally, the first set and/or the second set of members comprise non-serrated cutting edges. In an alternative, the first set and/or the second set of members comprise serrated or saw-toothed cutting edges. In a further alternative, the first set and/or the second set of members have an angled guillotine shape.

[0040] Preferably, the cutting attachment further comprises first clips or other locking means for locking onto the rim of a first container. Preferably, the cutting attachment further comprises second clips or other locking means for attaching to the rim of a second container having a differing diameter to the first container.

[0041] In an alternative, the first and/or second set of members comprises only one member.

[0042] Optionally, the members are blades or wires. Optionally, the members of the first and/or second set are each of the same length. Optionally, the members of the first set are longer than the members of the second set.

[0043] Optionally, the second set of members comprises more members than the first set of members. In other examples, the second set of members comprises the same number of members as the first set. Optionally, the first and/or second set comprises at least 3, 5, 7, 9, or 12 members.

[0044] Preferably, members of the first set are each arranged parallel to each other, and preferably are parallel along their length and/or height. Preferably, members of the second set are each arranged parallel to each other, and preferably are parallel along their length and/or height. Preferably, members of the second set are each arranged perpendicularly to members of the first set.

[0045] Preferably, members of the second set intersect members of the first set. Optionally, members of the first and/or second set comprise an interlock formation for interlocking the first set of members with the second set of members. Optionally, the second set of members is integrally formed with the first set of members.

[0046] Optionally, the apertures are rectangular or square. Optionally, the cutting arrangement is rectangular or square or circular.

[0047] According to another aspect, there is provided a cutter housing for a kitchen appliance, comprising a cutting attachment as described herein; and a movable blade movable to cut across food moving along the length of the feed-tub (such that food entering the kitchen appliance via the cutting attachment can be cut by the blade). According to another aspect, there is provided a kitchen appliance comprising a cutting attachment as described herein, optionally wherein the kitchen appliance comprises a blade located adjacent (a base of) the cutting attachment.

[0048] Preferably, the kitchen appliance further comprises a moveable blade positioned beyond the output of the feed tube, configured to cut across the feed tube. Optionally, the moveable blade is a rotary blade mounted on a disc. Preferably, the moveable blade is mounted on a first surface of the disc closest to the output of the feed tube, and the disc further comprises a second surface further from the output of the feed tube than the first surface, the second surface configured to support food to be cut by the movable blade.

[0049] Preferably, the disc further comprises a third surface connecting the first surface and the second surface, optionally wherein the third surface is inclined so as to slope relative to the first surface and the second surface. Preferably, the disc further comprises an aperture through which food cut by the rotary blade may fall. Preferably, the kitchen appliance further comprises a floor configured to receive food cut by the rotary blade, optionally wherein the disc further comprises an element configured to drive cut food on the floor towards a chute. Preferably, the distance between the first surface and the second surface is approximately 1cm.

[0050] Preferably, the movable blade comprises a set of interchangeable movable blades configured to be interchangeable to cut food at differing distances relative to the first aperture and/or having blades of differing shape.

[0051] Preferably, cutting edges of the members are orientated towards the input of the feed tube. Preferably, the height of the members is orientated parallel to the length of the feed tube. Preferably, the at least a portion arranged at the third height is positioned at the centre of the feed tube.

[0052] Preferably, the teeth of the pusher protrude a distance greater than the height of the members. Preferably, the pusher comprises a flange on the end of the pusher opposite the teeth, the flange having a diameter greater than that of the feed tube and configured to prevent the entirety of the length of the pusher being advanced within the feed tube. Preferably, the pusher has a length smaller than the length of the feed tube.

[0053] Preferably, the kitchen appliance further comprises a motor for driving the movement of the moveable blade. Preferably, the kitchen appliance is configured to energise the motor responsive to a sensor input indicating that food has reached a predetermined position relative to the movable blade. Preferably, the kitchen appliance comprises an interlock mechanism for preventing the energisation of the motor when the movable blade is not contained within the or a cutter housing. Preferably, the kitchen appliance comprises a clutch configured to cause the moveable blade to slip relative to the motor when a predetermined torque condition is met.

[0054] Preferably, the kitchen appliance comprises a heating and/or cooling element configured to cook food diced by the food processor. Preferably, the kitchen appliance further comprises a mixing blade for mixing food during cooking.

[0055] Disclosed herein is a cutting attachment for a kitchen appliance, comprising: a first set of members having cutting edges, wherein the cutting edge of at least one of the first set of members comprises at least a portion arranged at a first height; and a second set of members having cutting edges, wherein the cutting edge of at least one of the second set of members is arranged at a second height, the second height being different to the first height; wherein the first set of members and the second set of members form an array of apertures between the cutting edges; optionally further comprising an engagement formation for engaging the cutting attachment to a feed tube in the kitchen appliance.

[0056] According to another aspect, there is provided a dicing arrangement comprising two or more intersecting blades located within an elongate feed tube through which food may be inserted for cutting by the blades, wherein the two or more intersecting blades are provided with cutting edges having differing distances relative to a first aperture of the feed tube through which food may be inserted.

[0057] Preferably, the two or more intersecting blades comprise two sets of blades, with each set comprising two or more blades. Preferably, blades within a set extend parallel to each other. Preferably, the one set of intersecting blades intersects at a right-angle to the other. Preferably, the two or more intersecting blades have lower edges opposite to the cutting edges, wherein the lower edges are of a same distance relative to the first aperture. Preferably, the two or more intersecting blades have cutting edges with a differing distance along part of their length and a same distance along an other part of their length.

[0058] Preferably, the part of the length of the intersecting blades along which cutting edges of differing distance are formed is located centrally to the feed-tube. Preferably, the other part of the length of the intersecting blades along which they have edges of the same distance is that which abuts an inner wall of the feed-tube.

[0059] Preferably, the two or more intersecting blades comprise three or more intersecting blades, with the intersecting blade having the cutting edge closest to the aperture being provided centrally within the feed-tube, and preferably wherein the difference in distance between the intersecting blade closest to the first aperture and an intersecting blade furthest from the aperture is twice that between an intermediate intersecting blade and the intersecting blade furthest from the aperture. Preferably, the intersecting blades are arranged to form a grid defining regularly-sized through-holes in co-operation with an inner wall of the feed-tube.

[0060] According to another aspect, there is provided a cutting grid attachment, comprising: a first set of cutting members comprising at least one protruding cutting member; and a second set of cutting members forming a grid with the first set of cutting members; wherein the protruding cutting member protrudes above at least one cutting member of the first set.

[0061] According to another aspect, there is provided a cutting grid attachment, comprising: a first set of cutting members; and a second set of cutting members forming a grid with the first set of cutting members, the second set of cutting members comprising at least one multi-height cutting member having a raised portion and a lower portion; wherein the lower portion extends a length greater than a distance between two adjacent cutting members of the first set.

[0062] Whilst the invention has been described in the field of domestic food/drink processing and preparation machines, it can also be implemented in any field of use where efficient, effective and convenient preparation and/or processing of material is desired, either on an industrial scale and/or in small amounts. The field of use includes the preparation and/or processing of: chemicals; pharmaceuticals; paints; building materials; clothing materials; agricultural and/or veterinary feeds and/or treatments, including fertilisers, grain and other agricultural and/or veterinary products; oils; fuels; dyes; cosmetics; plastics; tars; finishes; waxes; varnishes; beverages; medical and/or biological research materials; solders; alloys; effluent; and/or other substances, and any reference to "food", "beverage" (or similar language) herein may be replaced by such working mediums.

[0063] The invention described here may be implemented in heated and/or cooled machines. It may be used in a machine that is built-in to a work-top or work surface, or in a stand-alone device. The invention can also be provided as a stand-alone device, whether motor-driven or manually powered.

[0064] The invention extends to methods and/or apparatus substantially as herein described and/or as illustrated in the accompanying drawings.

[0065] The invention extends to any novel aspects or features described and/or illustrated herein. In addition, apparatus aspects may be applied to method aspects, and vice versa. Furthermore, any, some and/or all features in one aspect can be applied to any, some and/or all features in any other aspect, in any appropriate combination.

[0066] It should also be appreciated that particular combinations of the various features described and defined in any aspects of the invention can be implemented and/or supplied and/or used independently.

[0067] As used herein, means plus function features may be expressed alternatively in terms of their corresponding structure, such as a suitably programmed processor and associated memory, for example.

[0068] The invention will now be described, purely by way of example, with reference to the accompanying drawings, in which:

Figure 1 shows an example embodiment of a cutting attachment having a first set of members and a second set of members;

Figure 2 shows an example embodiment of a cutting arrangement comprising a cutting attachment mounted in a feed tube and a rotary cutter housing;

Figures 3A and 3B show an example embodiment of a cutting attachment comprising a member having a cutting edge extending to a third height;

Figures 4A and 4B show an example embodiment of a cutting attachment with cutting edges comprising a portion arranged at a first height and a portion arranged at a third height;

Figure 5 shows a perspective view of a food processing appliance having a cutting arrangement; and

Figures 6A and 6B show a cutting arrangement having a cutting attachment mounted in a feed tube.

Specific Description

[0069] Figure 1 shows a perspective view of a cutting attachment. The cutting attachment is a cutting grid 100. The grid 100 comprises a first set of members 101. The grid 100 also comprises a second set of members 102. In Figure 1, the members 101 and 102 are blades having a length 101 a and 102a respectively. The blades comprise a cutting edge 103 along the top length 101 a/102a of the blades. In cases where the grid 100 is arranged horizontally, the cutting edge 103 is on the uppermost point of the blades in the vertical direction.

[0070] The grid 100 is suitable for cutting food. For example, it may be used in a food processor, as described in more detail below with reference to Figures 2 and 5. In relation to Figure 1, food is directed towards the grid 100 from above and pushed onto the grid 100 such that the food engages the blades 101 and 102, for example at the cutting edges 103. Food is then cut and pushed through the apertures 104. The food then exits the grid 100 in cut shapes with a cross-section of the shape of the apertures 104, e.g. square or rectangular. The cutting grid 100 is combined with a cross-cutting blade orthogonal to the first set of blades 101 and the second set of blades 102 in order to dice the food. This is described in more detail with reference to Figure 2.

[0071] The first set of blades 101 are arranged in the same plane and parallel to each other, while the second set of blades 102 are also arranged in the same plane and parallel to each other. The second set of blades 102 are arranged perpendicularly to the first set of blades 101, but in the same plane. In this manner, a grid 100 is formed between the two sets of blades. The grid 100 is rectangular, but in other cases it may be square. The sets of parallel blades are equally spaced apart. In this case, the two sets of blades form an array of apertures 104 between the blades, the apertures 104 having a square or rectangular shape. The apertures 104 provide a pathway for food cut by the cutting edges 103.

[0072] Figure 1 shows the first set of blades 101 comprising three blades, and the second set of blades 102 comprising seven blades. There are an odd number of blades in the first set. There are more blades in the first set 101 than in the second set 102. The first set of blades 101 have a length 101 a longer than the length 102a of the second set of blades 102, allowing the formation of a rectangular grid 100.

[0073] As shown in Figure 1, the first set of blades 101 intersects the second set of blades 102. For example, the second set of blades 102 comprises complementary grooves for interlocking with the first set of blades 101 or the first set of blades 101 comprises complementary grooves for interlocking with the second set of blades 102 (not shown in Figure 1). In some cases, the sets of blades are formed separately or they are integrally formed.

[0074] Each blade of the first set and/or the second set extends from the same base level 105. This base level 105 defines the base of the grid. For example, this means that food exits the grid 100 at the same vertical position. This ensures that the food is held stable horizontally as it moves vertically through the grid 100. In some examples where a further moveable blade is positioned below the cutting grid 100 in order to dice the food, holding the food stable is especially preferable. Figure 1 shows both the first set 101 and the second set 102 extending from the same base level 105.

[0075] In Figure 1, the first set of blades 101 extends to a different level compared to the second set of blades 102. The cutting edges 103 of the first set of blades 101 are arranged at a first height, and the cutting edges 103 of the second set of blades 102 are arranged at a second height different to the first height. The cutting edges 103 of the first set of blades 101 extend beyond that of the second set of blades 102. The first set of blades 101 extends beyond the second set of blades 102 by a height H. For example, the height H is at least 2mm, or in some cases at least 3mm, or at least 5mm, or at least 10mm. The first height is greater than the second height.

[0076] At least two of the blades of the first set 101 extend to the same level, and as shown in Figure 1, all of the blades of the first set 101 extend to the same level. In Figure 1, all of the blades of the second set 102 extend to the same level. However, in some cases, for example as described below with reference to Figure 3, at least one of the blades of the first set 101 extends to a different level compared to the other blades of the first set.

[0077] The cutting edge 103 of the blades is a sharpened edge to aid cutting. For example, the cutting edge 103 comprises a wedge shape coming to a point at the extremity of the cutting edge 103. In use, for example in situ within a food processor, the cutting edge 103 is orientated to face towards the food article that is to be cut. Each member is a straight and/or level blade. The blades are flat and non-serrated. It is preferable that the blades have flat edges as it is easier to manufacture and they are less likely to crack when subjected to repeated vertical load as they have fewer or no corners which can cause metal fatigue and lead to cracks in the blade. This also applies to the members of the cutting attachments 300 and 400 described with reference to Figures 3 and 4.

[0078] The grid 100 comprises an engagement formation for engaging the cutting grid to a food processor. For example, the engagement formation is provided by a frame configured to engage the members (not shown in Figure 1). The frame extends around the grid and provides support to the members. The grid then engages to a food processor. In another example, the engagement formation comprises the ends of the members or the lower edges at the base level 105.

[0079] Figure 2 shows a cutting arrangement 200 as connected to a rotary cutter housing 210. The rotary cutter housing comprises an upper frame 222 including a feed tube 211. The upper frame 222 attaches to a lower housing 209 at a rim to form the rotary cutter housing 210. The rotary cutter housing 210 encloses a rotary cutter 215, where the upper frame 222 is detachable from the lower housing to enable access to the rotary cutter 215 (for example, for cleaning purposes).

[0080] The cutting arrangement 200 forms a dicing arrangement with the rotary cutter. The dicing arrangement 200 comprises a cutting grid 100, for example as described with reference to Figure 1. The cutting grid 100 could also be the cutting grid as described with reference to Figure 3 and 4. The cutting grid 100 is positioned within the feed tube 211. Figure 2 shows the cutting grid 100 positioned towards the output of the feed tube 211 towards its bottom end, closest to the rotary cutter 215 of the cutter housing 210. Food is inserted into the input of the feed tube 211 towards its top end, above the grid 100.

[0081] The cutting grid 100 may be fixed within the feed tube 211, either by over-moulding the feed tube over the edges of the grid 100, or by gluing the grid 100 within the feed tube 211. Alternatively the edges of the grid 100 may fit into corresponding slots formed in the feed-tube 211 so as to make it removable to facilitate cleaning. In a further alternative, the grid 100 may be fixed within a removable frame that can be inserted into the feed tube 211.

[0082] A first clearance is formed between the grid 100 and the output of the feed tube 211, and a second clearance is formed between the output of the feed tube 211 and the rotary cutter 215. These clearances protect the user's fingers whilst handling the dicing arrangement 200 and help prevent clash between the rotary cutter 215 and the feed tube 211.

[0083] A pusher 212 is provided for assisting in driving food through the grid 100. The pusher 212 is dimensioned so as substantially to fill the cavity within the feed tube 211. The pusher 212 has pushing elements (e.g. teeth) 213 at a first end of the pusher 212. The pushing elements 213 help grip food during processing. The pushing elements 213 are sized so as to fit into / through the apertures 104 of the cutting grid 100 (e.g. see Figure 1).

[0084] The pushing elements 213 are separated by vertical indents coinciding with the position of the members 101 and 102 of the grid 100. The pushing elements 213 are dimensioned so as substantially to fill the apertures 104 such that they drive food through the grid 100. The vertical indents are of the same vertical height, which is at least that of the tallest blade of the grid 100, such that the pushing elements 213 drive food all the way through the grid 100. In other words, the height of the pushing elements 213 is greater than the height of the grid 100. Alternatively, the indents are of differing height in the case that different members 101 and 102 of the grid 100 have different heights (for example, see below in reference to Figure 3 and 4). In this case, the pushing elements 213 are different heights, but each is tall enough to drive food all the way through its respective aperture 104.

[0085] In examples where the orientation of the pusher 212 must be a certain way to drive food all the way through the grid 100 (e.g. where the members 101 and 102 have differing heights or the grid 100 is non-symmetric), a rail or protrusion is provided on the inner wall of the feed tube 211 corresponding to an indent on the pusher 212 such that the pusher 212 can only be inserted into the feed tube 211 with a specific orientation.

[0086] A flange 214 is provided on a second end of the pusher 212 furthest from the feed tube input. The flange 214 has a diameter greater than that of the feed tube 211 such that it prevents the pusher 212 from being pushed all the way through the feed tube 211 and prevents contact with the rotary cutter 215.

[0087] Figure 2 shows a disc-shaped rotary cutter 215 having a rotating moveable blade for cutting across the food in an axis orthogonal to the first set of members 101 and the second set of members 102 of the cutting grid 100. This achieves the dicing effect once food has been cut by the cutting grid 100. In other examples, the moveable blade is a reciprocating blade (e.g., a double-edged blade that moves successively back-and-forth beneath the feed-tube).

[0088] The rotary cutter 215 is driven to rotate about an axle inserted along the axis 216, along which the rotary cutter 215 has keyed elements which engage with the axle. Alternatively, the rotary cutter 215 is provided with an axle that extends along the axis 216 below the cutter housing 20 into engagement with a drive outlet of a tower configured to be positioned below the dicing arrangement 200 (for example, see the tower in Figure 5).

[0089] As the rotary cutter 215 rotates, cut food depending from the grid 100 first contacts a raised surface (i.e. an upper surface) 217, slides down the sloped surface 218, and then comes to the lower surface 219 where it stops falling and is cut by the cutter blade. The food then falls through an aperture in the rotary cutter 215 to the floor 220 of the cutter housing 210.

[0090] The vertical length of the sections of food cut by the rotary cutter 210 is thus determined by the vertical distance between the upper surface 217 and the lower surface 219. For example, this distance is approximately 1cm, so as to create diced portions of food approximately 1cm long. Different rotary cutters 215, having different distances between the upper surface 217 and the lower surface 219, are provided and configured so as to be removably attachable within the rotary cutter housing 210 for achieving different lengths of food portions. Also, different rotary cutters 215 comprising interchangeable discs having blades of differing shape or of differing height relative to the grid 100 (and thus the output of the feed tube 211) are provided. The user is thus able to achieve portions of diced food of differing lengths and/or shapes by changing the rotary cutter disc 215.

[0091] The sloped surface 218 serves to smooth out the drop from the upper surface 217 to the lower surface 219. This helps prevent the user from experiencing unpleasant jolts as food drops from one surface to the other, and helps prevent excessive vertical impacts on the rotary cutter 215.

[0092] Once diced food drops to the floor 220, it may be hit by a flexible element attached to the bottom of the rotary cutter 215 for driving it towards and through a chute 221.

[0093] The cutter blade is mounted on the top surface of a disc so that food depending downwardly through the grid 100 is stopped by the flat surface of the disc prior to cutting by the blade, and cut sections are thus of a relatively short length (i.e. no greater than the height of the rotary blade above the surface of the disc). The disc includes an aperture for food cut by the blade to fall down through.

[0094] Alternatively, no disc is provided. In this case, the food protrudes freely downwardly past the blade so that the sections cut by the blade are of a long length.

[0095] The movement of the blade within the cutter housing 210 is continuous or periodic. For example, the blade only cuts across food depending from the grid 100 once every five seconds. The blade operates at a relative high speed, for example 60 RPM or more, preferably 200 RPM or more, so as to create square-ended sections. The movement of the blade within the cutter housing 210 is responsive to a sensor. The sensor is described in more detail with reference to Figure 5.

[0096] Figure 3 shows a cutting attachment, with Figure 3A showing a perspective view. The cutting attachment is a grid 300. The grid 300 comprises a first set of members 301 and a second set of members 302, similar to Figure 1A. The second set of members 302 is arranged to form a grid 300 with the first set of members 301. As shown in Figure 3, the members 301 and 302 are blades with cutting edges 303. Figure 3 shows the members as blades, however in other examples the members may have other embodiments such as wires e.g. for cutting cheese. The grid 300 has an array of apertures 304 between the cutting edges 303 formed by adjacent and intersecting members 301 and 302.

[0097] The first set of members 301 have cutting edges 303, wherein the cutting edge 303 of at least one of the first set of members 301 comprises at least a portion 301 arranged at a first height. The second set of members 302 have cutting edges 303, wherein the cutting edge of at least one of the second set of members 302 is arranged at a second height 302, the second height being different to the first height (where the difference is H1-H, as shown in the Figure). The first set of members 301 and the second set of members 302 form an array of apertures 304 between the cutting edges 303. The cutting edge of at least one of the first set of members comprises at least a portion 306 arranged at a third height (different to the first height), and wherein said at least a portion 301 arranged at the first height and said at least a portion 306 arranged at the third height extends over at least one of the apertures 304.

[0098] The at least a portion arranged at the third height is positioned centrally in the cutting attachment. The at least a portion arranged at the third height is positioned centrally along the length of the second set of members.

[0099] In Figure 3, the at least a portion extends over the entire length of the member. In this manner, two members 301 extend to the first height, and one member 306 extends to the third height, the third height being greater than the first height.

[0100] The first set of members 301 have cutting edges 303 arranged at a first height. The second set of members 302 have cutting edges 303 arranged at a second height, wherein the second height is different to the first height. In Figure 3, the first height is greater than the second height. For example, Figure 3B shows the cutting edges 303 of the first set of members 301 extending above the cutting edges 303 of the second set of members 302. The difference in height is H. In some examples, the height H may be at least 2mm or preferably at least 3mm.

[0101] The first set of members 301 comprises a member 306 having a cutting edge 303 arranged at a third height. The member 306 having a cutting edge 303 at the third height is raised relative to at least one of the first set of members 301. The third height is greater than the first height. Figure 3B shows the member 306 having a cutting edge 303 at the third height extending above the members 301 of the first set extending to a first height. The member 306 having a cutting edge arranged at a third height is shown to extend by a height H1 above the cutting edges 303 of the second set of members 302, while the members 301 of the first set extend by a height H above the second set 302, wherein the height H1 is greater than the height H.

[0102] Height H1, for example, is at least twice the height H (the height of the first set of members 301 above the second set of members 302). For example, the height H1 is at least 4mm or preferably at least 6mm. The member 306 extends beyond the first set of members 301 by a height H1-H, which is the extension of the member 306 above the second set of members 302, minus the difference in height between the first set of members 301 and the second set of members 302. In other words, H is the difference in height between the first height and the second height, H1 is the difference in height between the third height and the second height, and H1-H is the difference in height between the third height and the first height. For example, the height H1-H is at least 2mm or preferably at least 3mm.

[0103] Figure 3 shows one member 306 raised above two other members 301 of the first set, the first set of members 301 having three members in total.

[0104] As food is advanced towards the grid 300 and towards the cutting edges 303, the food will engage the member 306 having a cutting edge 303 arranged at the third height before the other members of the first set 301. This arrangement results in the force required to drive food through the grid being reduced. This occurs because the most difficult part of driving a blade into a food article is the initial penetration due to many food articles having a tough skin. The surface tension is significant, and once the initial penetration is made, a progressive cracking or tearing effect aids further progression of the blade through the item. This is advantageous as it is more convenient for the user, provides more control over cutting, and allows for cheaper construction.

[0105] In other examples, there may be a plurality of members 306 having cutting edges 303 extending to a third height. In some examples, all of the first set of members 301, except the members 306 having cutting edges arranged at a third height, extend to the same level (i.e. the first height).

[0106] Figure 3B shows an end-on view of the member 306 with a cutting edge 303 arranged at a third height, situated between two other members of the first set 301. The member 306 extending to the third height is arranged centrally along the length of the members of the second set 302. The member 306 intersects the second set of members 302 at the central point along their length. The member 306 extending to the third height is the middle member of the first set of members 301. In Figure 3B, there are three members 301, wherein the member 306 extending to the third height is arranged in the middle. The member 306 is arranged between other members extending to a level lower than the member 306. Having the tallest member 306 as the central blade allows it to penetrate the food first, reduce the force required by the user to begin the cutting process, and hold the food horizontally as it progresses vertically through the grid 300.

[0107] In other examples, there may be an even number of members of the first set 301. In this case, there is not a single middle member, and instead the two middle members are members 306 extending to a third height.

[0108] The second set of members 302 comprises seven members. Each of the second set of members 302 extend to the same second height, which is different to the first height to which the first set of members 301 extend. The member 306 extending to the third height extends to a higher level than the second set of members 302. Therefore, the third height is greater than the second height.

[0109] In the example of Figure 3, the first set of members 301 are taller than the second set of members 302, in a similar manner to as described in reference to Figure 1; however, the first set of members 301 comprises a member 306 extending to a third height which extends to a height greater than the first set of members 301 and the second set of members 302.

[0110] Figure 4 shows a cutting attachment, wherein the cutting attachment is a grid 400. The grid 400 comprises a first set of members 401 and a second set of members 402. The members intersect to form a grid with apertures 404, in a similar manner to that described above. Figure 4 shows the members as blades, however in other examples the members may have other embodiments such as wires e.g. for cutting cheese.

[0111] The first set of members 401 comprises a portion arranged at a first height 408 and a portion arranged at a third height 407. These portions may be referred to as a lower portion 408 and the raised portion 407, respectively. The lower portion 408 is at a first height, and the raised portion 407 is at a third height, wherein the third height is greater than the first height. The raised portion 407 has the effect that the cutting edge 403 extends to a level above the lower portion 408.

[0112] In Figure 4, the lower portion 408 is arranged centrally along the length of the member 401 comprising the portion. This means the portion extending to the first height is located centrally. This guides food towards the centre of the grid 400. For example, if the grid 400 is positioned within a feed tube of a food processor, guiding food towards the centre of the feed tube can avoid friction with the inner wall of the feed tube. This may provide more control over cutting and generate greater regularity in the cutting of food.

[0113] The second set of members 402 extend to a second height. In Figure 4, the second height is the same as the third height. The second set of members 402 extend to the same height as the raised portions 407. Having the raised portions 407 at the ends of the members 401, and the raised portions 407 extending to the same level as the second set of members 402 is also advantageous as it increases the ease of manufacture because the ends of each member is of the same size, which allows for easier engagement with walls of a feed tube (i.e. holes in the feed tube for receiving each blade end may be of the same size).

[0114] Figure 4A shows all of the first set of members 401 each comprising a raised portion 407 and a lower portion 408. In other examples, only some of the first set may have a raised portion 407 and a lower portion 408.

[0115] Figure 4A shows each member 401 having two raised portions 407: one arranged on either side of a lower portion 408. In other examples, there may be a plurality of lower portions 408.

[0116] The lower portion 408 extending to the first height extends over at least one of the apertures 404. Figure 4 shows the lower portion 408 extending over two apertures 404.

[0117] Figure 4B shows an end-on view of the grid 400 showing a member 401 of the first set of members having a raised portion 407 and a lower portion 408. The raised portion 407 is separated from the lower portion 408 by a step. There is a discontinuity in the height of the blade (i.e. it is not sloped). Figure 4B shows the change in height between the raised portion 407 and the lower portion 408 occurring at an intersection of the member 401 with one of the second set of members 402.

[0118] Figure 4B shows a lower portion 408 arranged between raised portions 407. The two raised portions 407 extend up to the same level (i.e. the third height). The lower portion 408 is arranged centrally along the length of the member 401. The lower portion 408 extends to the same distance either side of the centre of the member 401. The raised portions 407 are arranged at the periphery of the length of the member 401. Figure 4A and 4B show the raised portions 407 extending from the end of the member 401 along the length of the member 401 to the lower portion 408.

[0119] Figure 4 shows the lower portion 408 extending a length greater than a distance between two adjacent members of the second set 402. The lower portion 408 extends across three adjacent members of the second set 402. Therefore, the lower portion 408 extends a length equal to twice the length of the aperture 404 in the direction along which the member 401 extends. The lower portion 408 is bound by an intersection of the member 401 with members of the second set 402.

[0120] As the step may occur at an intersection between the member 401 and one of the second set of members 402, the lower portion 408 may be bound by two steps (i.e. with one raised portion 407 on either side). This means that the lower portion 408 is arranged between an intersection of the member 401 with one of the second set of members 402 and an intersection of the member 401 with another one of the second set of members 402 such that the lower portion is central to the cutting attachment, as shown in Figure 4B. In other examples, the steps may be slopes or another form of change in height.

[0121] The raised portion 407 and/or the lower portion 408 have a flat or non-serrated cutting edge 403.

[0122] Figure 5 shows a food processing appliance 5000 having a dicing arrangement 500 located on a rotary cutter housing 510. The dicing arrangement 500 comprises an upper frame having a feed tube 512 and tabs 523 (described in more detail later on) which is attached to a lower housing 509 to form the rotary cutter housing 510, where a cutting grid 100 is enclosed within the dicing arrangement 500. In some examples, the rotary cutter housing 510 may be the rotary cutter housing 210 described in reference to Figure 2. The rotary cutter housing 510 receives rotary drive from a motor located in the base 524 via a tower 525 similar to that described in the Applicant's Patent Application GB2547895A.

[0123] The base 524 includes a user interface 526 for controlling the speed of rotation of the rotary cutting tool in the rotary cutter housing 510. An on/off switch 527 for activating the base 524 is also provided. The base 524 has a bowl-seat in it to which a bowl 528 having a lid 529 may be releasably attached. The base 524 further includes a heating/cooling element for heating/cooling the bowl 528, and the heating/cooling element is controllable via the user interface 526. The bowl 528 has a motor-driven mixing tool within it for mixing food during cooking.

[0124] During use, the user inserts food into the dicing arrangement 500 through the feed tube 512 where it is diced in co-operation with the rotary cutter tool of the rotary cutter housing 510. Diced food is then output through the chute 521 of the rotary cutter housing 510 through an aperture 530 in the centre of the lid 529 into the bowl 528 for further processing (e.g. cooking, mixing with a rotary mixing tool, and/or other cooking processes). Alternatively the rotating functionality of the tower 525 may be utilised to turn the chute 521 so that it is over a separate bowl.

[0125] In some examples, the cutter housing 510 includes a sensor for measuring the extent by which food depends from the grid 100, where the sensor is in electrical communication with a CPU in the base unit 524 which controls the motor of the base unit 524 to rotate only when food of a predetermined, or user-input, length depends from the grid 100. For example, this may be set either directly through the user interface 526, or by downloading a recipe having a predetermined cutting length to the appliance 5000 using an internet connection of the appliance 5000. For example, the sensor may sense the contact of food with the rotary cutter either by electrical conductivity or by measuring weight applied to the rotary cutting disc.

[0126] Figure 6 shows an example construction of a cutting arrangement 600, which may form part of the rotary cutter housing 510 of Figures 2 and 5. The cutting arrangement is a dicing arrangement 600 which has a feed tube 612 supported on a frame 622 having tabs 623. In use, the frame 622 may be engaged with a lower housing to form a rotary cutter housing. The rotary cutting tool of the rotary cutter housing 510 rotates beneath the dicing arrangement 600 about an axis 616 for cutting food protruding through the feed tube 612 into the rotary cutter housing 510. A bearing hole may be provided in the dicing arrangement 600 corresponding to the axis 616 for an axle of the rotary cutter to bear on.

[0127] The base 524 preferably receives signals from interlocks (e.g., micro-switches actuated by push-rods) which detect the presence or absence of frame 622 on the dicing arrangement 600. Base 524 may prevent activation of a motor for driving the rotary cutter tool when the frame 622 is not attached so as to cover the rotary cutter tool, thus preventing accidental injury to the user. A slip-clutch may be provided either in the base 524 or in the rotary cutter housing 510 along the drive-shaft connecting the motor of the base 524 to the rotary cutter, so that jamming of the rotary cutter will not cause damage to the motor or intervening components.

[0128] A cutting grid 100 is located within feed tube 612 for slicing food inserted through the feed tube 612. The grid 100 comprises a square or rectangular grid with at least two overlapping sets of blades 601 and 602 arranged at right-angles to each other, with each set 601 and 602 having cutting edges pointing vertically upwards toward the opening of the feed tube 612. The overlapping of the sets of blades 601 and 602 creates multiple square or rectangular apertures 104 through which food may pass. Each set of blades 601 and 602 preferably consists of one or more blades, and more preferably two or more blades to provide multiple pathways for food through the apertures 104.

[0129] The feed tube 612 is preferably shaped so as to be generally rectangular/square in cross-section when viewed from the entrance/exit of the feed tube 612, so as to avoid forming excessively small pathways/apertures around the edge of the grid 100 where the curvature of the inner wall of the feed tube 612 forms the outer boundary of the grid 100.

[0130] Whilst the dicing arrangement 600 is shown as being used in association with the rotary cutter housing 510, it may be used independently of it. For example it could instead be attached directly to the bowl 528 in place of the lid 529 using the tabs 623, which may have a clip, locking groove, or other attachment means for attaching to the rim of the bowl 528. The tabs 623 allow the dicing arrangement 600 to be attached to a container of differing size to the cutter housing 510, which the frame 622 attaches to via clips or other locking means.

[0131] Where the dicing arrangement 600 is used independently of the cutter housing 510 the vertical length of the sections of cut food forced through the grid 100 will be equal to that of the food item inserted into the feed tube 512. This is suitable for making, for example, chips using potatoes (also known as "French fries").

Alternatives and Extensions

[0132] With reference to Figure 1, whilst the blades are shown intersecting at right-angles for creating cuboid/3D rectangular pieces, they may intersect at any other angle(s) to create prism shapes with diamond-shaped cross-sections. In some examples, the second set of blades is arranged at an acute angle to the first set of blades such that the apertures may be a diamond shape. In other examples, the blades may not be equally spaced apart, and may not be parallel to each other.

[0133] Furthermore, whilst the blades are shown as being straight and arranged parallel to each other for ease of manufacture, they could instead be wavy or corrugated. Each blade may be straight and/or level; however, in other examples, it may have a serrated, crinkle cut, or saw-toothed edge.

[0134] Whilst the first set of blades are shown to extend beyond the second set of blades by a height H, in other examples some of the first set of blades may comprise at least a portion extending to the same level as the second set of blades. In this case, the height difference H for the portion is zero.

[0135] With reference to Figure 3, in some examples there is a plurality of members extending to the third height. Some members of the first set may extend to different levels than the first and third height. For example, a member may extend to the third height, and another member may extend to a fourth height, wherein the fourth height is greater than the third height. In this example, the member extending the furthest may be located centrally along the length of the second set of members and/or may be the middle member of the first set. For example, the member extending to the fourth height may be the middle member. The member extending to the fourth height may be arranged between a member extending to the third height on either side. These members may then be arranged between at least one of the first set of members extending to the first height. Therefore, the three members extending beyond the first height are situated towards the centre of the first set of members, and the furthest-extending member is situated in the middle. This has the effect of sequentially increasing the height of the cutting edge of the member towards the centre. For example, the cutting edges could form a triangular cross-section shape, with the furthest-extending member situated in the middle. This further improves the cutting effect.

[0136] With reference to Figure 4, the raised portion may extend to a different height than the second set of members. The third height may be different to the second height. For example, at least one of the second set of members may extend beyond the raised portion. The second height may be greater than the third height. For example, the second set of members may comprise a member extending above others of the second set, in a similar manner to member 306 as described in reference to Figure 3.

[0137] Furthermore, with reference to Figure 4, the raised portion may be separated from the lower portion by a slope. For example the height of the cutting edge may change continuously from the lower portion to the raised portion. In this manner, there may be a slope or a ramp connecting the portion extending to the first height to the portion extending to the third height. In some cases, the slope may not be a straight line and may be curved.

[0138] The features disclosed above may be provided in any combination. For example, in a case where the first set of members comprises a member extending to a third height higher than other members of the first set (e.g. as described with reference to Figure 3), the second set may comprise members having a raised portion and a lower portion (e.g. as described with reference to Figure 4).

[0139] It will be understood that the present invention has been described above purely by way of example, and modifications of detail can be made within the scope of the invention.

[0140] Each feature disclosed in the description, and (where appropriate) the claims and drawings may be provided independently or in any appropriate combination.

[0141] Reference numerals appearing in the claims are by way of illustration only and shall have no limiting effect on the scope of the claims.

Claims

1. A cutting attachment for a kitchen appliance, comprising:

a first set of members having cutting edges, wherein the cutting edge of at least one of the first set of members comprises at least a portion arranged at a first height; and

a second set of members having cutting edges, wherein at least a portion of the cutting edge of at least one of the second set of members is arranged at a second height, the second height being different to the first height;

wherein the first set of members and the second set of members form an array of apertures between the cutting edges;

wherein the cutting edge of at least one of the first set of members comprises at least a portion arranged at a third height, the third height being different to the first height, and wherein at least one of said at least a portion arranged at the first height and said at least a portion arranged at the third height extends over at least one of the apertures.

2. A cutting attachment according to claim 1, wherein one of the at least a portion arranged at the first height and the at least a portion arranged at the third height is positioned centrally in the cutting attachment; preferably wherein one of the at least a portion arranged at the first height and the at least a portion arranged at the third height is positioned centrally along a length of one of: the first set of members and the second set of members.

3. A cutting attachment according to claim 1 or 2, wherein the third height is greater than the first height.

4. A cutting attachment according to claim 3, wherein the first height is greater than the second height.

5. A cutting attachment according to any preceding claim, wherein the first set of members comprises at least one member having a cutting edge arranged at the third height; preferably wherein the at least one member extending to the third height is a middle member of the first set of members.

6. A cutting attachment according to any preceding claim, wherein the cutting edges of the first set of members are arranged at either the first height or the third height.

7. A cutting attachment according to claim 3, wherein the second height is the same as the third height; preferably wherein each member of the first set of members has a cutting edge comprising a portion arranged at the first height and a portion arranged at the third height, optionally wherein the portion arranged at the first height is centred on a middle member of the second set of members; more preferably wherein:

the entire length of the cutting edges of the first set of members consists of the portion arranged at the first height and the portion arranged at the third height; and/or

wherein the portion arranged at the first height is arranged between intersections of the member of the first set with members of the second set.

8. A cutting attachment according to any preceding claim, wherein at least one of said at least a portion arranged at the first height and said at least a portion arranged at the third height extends over at least half of the length of the at least one member; preferably wherein at least one of the first set of members and the second set of members extend from a common base level.

9. A cutting attachment for a kitchen appliance, comprising:

a first set of members having cutting edges, wherein the cutting edge of at least one of the first set of members comprises at least a portion arranged at a first height;

a second set of members having cutting edges, wherein the cutting edge of at least one of the second set of members is arranged at a second height, the second height being different to the first height;

wherein, optionally, the first set of members and the second set of members form an array of apertures between the cutting edges; and

wherein the first set of members and the second set of members extend from a common base level.

10. A cutting attachment according to any preceding claim, wherein members within a set extend parallel to each other; preferably wherein the first set of members intersects at a right angle to the second set of members; and/or wherein the cutting attachment further comprises an engagement formation for engaging the cutting attachment to the kitchen appliance.

11. A cutting attachment according to any preceding claim, further comprising a feed tube through which food may be inserted for cutting; wherein the first and second sets of members are located within or at an end of the feed tube.

12. A cutting attachment for a kitchen appliance, comprising:

a first set of members having cutting edges, wherein the cutting edge of at least one of the first set of members comprises at least a portion arranged at a first height;

a second set of members having cutting edges, wherein the cutting edge of at least one of the second set of members is arranged at a second height, the second height being different to the first height;

wherein, optionally, the first set of members and the second set of members form an array of apertures between the cutting edges; and

a feed tube through which food may be inserted for cutting; wherein the first and second sets of members are located within or at an end of the feed tube.

13. A cutting attachment according to claim 11 or 12, wherein the first and second sets of members are located closer to an aperture of the feed tube through which food exits the feed tube than an aperture of the feed tube through which food enters the feed tube; preferably wherein the cutting attachment further comprises a pusher for driving food along the feed-tube, wherein the pusher comprises teeth dimensioned so as to fit through the apertures of the cutting attachment; and/or a supporting frame for supporting the cutting attachment above a container.

14. A cutter housing for a kitchen appliance, comprising a cutting attachment according to any of claims 11 to 13; and a movable blade movable to cut across food moving along the length of the feed tube.

15. A kitchen appliance for dicing food, comprising a cutting attachment according to any of claims 1 to 13, optionally wherein the kitchen appliance comprises a blade located adjacent the cutting attachment.

Drawing