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(11) | EP 1 358 814 A1 |
| (12) | EUROPEAN PATENT APPLICATION |
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| (54) | One piece adjustable ring |
| (57) An adjustable ornamental ring or bracelet is constructed of a single piece of material
which is substantially rigid yet malleable under force. The shank of the ring contains
a size adjusting structure (20) integrally formed within the shank. The size adjusting
structure (20) is an accordion or helical spring-like structure positioned at the
bottom of the shank. The adjustment structure (20) may be expanded to increase the
ring size and compressed to contract the ring size. |
COPYRIGHT NOTICE
[0001] A portion of the disclosure of this patent document contains material which is subject to copyright protection. The copyright owner has no objection to the facsimile reproduction by anyone of the patent document or the patent disclosure, as it appears in the Patent and Trademark Office patent files or records, but otherwise reserves all copyright rights whatsoever.
BACKGROUND OF THE INVENTION
[0002] The present invention relates to ornamental jewelry such as a ring worn around a finger and a bracelet worn around a wrist or ankle, and, more particularly, to a one-piece adjustable size ring or bracelet.
[0003] The goal of properly sizing a finger ring is to provide a smug, comfortable fit which allows the ring to be easily placed and removed from a wearer's finger, feel comfortable to the wearer, and not unintentionally slide off of the wearer's finger. Rings are initially sized to fit a particular finger of one wearer. However, if the physical characteristics of the wearer change, such as through weight gain or loss or other growth of the wearer, or if the wearer desires to wear the ring on a different-sized finger or give the ring to another person with different-sized fingers, the ring would either be too narrow and tight or too wide and loose to be worn properly, if at all.
[0004] One method for altering the size of a ring involves cutting and removing a portion of the shank of the ring, This process leaves an opening in the shank with two ends. Once the portion is removed, the shank is subjected to either; 1) compression, forcing the two ends together and then joining them, forming a smaller-sized ring; or 2) expansion, forcing the two ends further apart and then joining a new, larger piece of material between them, forming a larger-sized ring. This is an expensive method which requires mutilation of the ring, ruining its aesthetic beauty and decreasing its value. It also requires repeated mutilation if further adjustments in size are required.
[0005] Various devices which are separate and removable from the shank of a ring have been disclosed for the adjustment of ring size. These devices include those disclosed in U.S. Patent Nos. 5.239,842, 4.903.507, 4.538.430, 4.480.447, 3.603.109, 3.238.741 and 3.237.426. Such devices are movingly or fixedly attached within the interior of the ring shank and act to effectively decrease the interior circumference of the ring shank.
[0006] These separate and removable devices have the drawback of only being able to effectively decrease the size of a ring, not increase it beyond the size of its initial interior circumference. Further, they have an "added-on" lock which detracts from the aesthetic beauty of the ring and require more parts beyond the shank of the ring itself. Also, some of these external devices are elastic in nature, and are thus prone to dissipation of their elasticity through repeated wearing. Repeated use ultimately renders these external devices weak and useless as sizing devices for rings.
[0007] Other sizing devices, such as that of U.S. Patent No. 5,131,243, have been disclosed wherein a ring shank has spaced apart ends which form an adjustment gap. The ends allow for the expansion and contraction of the shank to very its size. Once a desired size is attained, a cap apparatus is then placed over the shank to lock it in place at the particular size. The small pieces that comprise the cap apparatus are not permanently attached to the shank and are prone to being misplaced. If the pieces are lost, the sizing device is rendered useless. The caps also rain the aesthetic beauty of the shank, and the open-ended characteristic of the shank detracts from its value as a solid piece of metal or alloy.
[0008] Still other sizing devices internal to a ring have been disclosed. U.S. Patent No. 4,223,541, discloses a ring having an adjusting band enclosed and movable within an interior slot in the shank. U.S. Patent No. 4,158,951, discloses a ring having a mesh band with a clasp secured to one end of it, the band being capable of forming a loop and locked by the clasp. U.S. Patent No. 3,460,356 discloses a device with a main band and an auxiliary band on the inner surface of the main band with a means for narrowing the diameter of the auxiliary band. Other sizing devices, such as that in U.S. Patent No. 5,136,858, include latch mechanisms and hinged arcuate sections, which are capable of opening and closing around the wearer's finger, for varying the size of a ring. Another patent, U.S. Patent No. 3,236,065, discloses a moveable shank element located within a channel of an ornamental portion of the ring.
[0009] All of these devices have multiple moving parts within the shank which are small and delicate. Such parts are prone to breakage and to being misplaced and are difficult and expensive to assemble and repair. Some require the machining of openings or cavities in the shank, which adds significant time and expense to the production of the ring shank. It also undermines the structural integrity of the shank and detracts from its value as a solid piece of precious metal or alloy.
[0010] Thus, there is a need for an adjustable finger ring which allows for easy and repeated expansion and contraction of a ring size and which does not contain numerous small parts which are easily lost or broken.
[0011] It is an object of the present invention to solve the problems described above with existing adjustable finger rings.
[0013] It is another object of the present invention to provide a finger ring which is easily adjustable in size without the need to cut any potion of the shank or to otherwise remove or add any material.
[0014] It is another object of the present invention to provide a ring which is easily adjustable in size without the addition of any extraneous parts to the shank or the ring as a whole.
[0015] It is another object of the present invention to provide a ring which may be adjusted to fit a continuous variety of finger sizes.
[0016] It is another object of the present invention to provide an adjustable finger ring which is comfortable and which does not turn upon the wearer's finger.
[0017] The above and other objects are achieved by a ring comprising a shank with an adjustment structure that facilitates the easy stretching and compressing of the interior of the ring to fit a variety of finger sizes. The shank is constructed of a single piece of material. The adjustment structure is an integral part of the shank and is formed within the same piece of material that comprises the shank. As such, no additional parts are required. Thus, there are no small parts which may be difficult to work with, easily broken, complex to assemble or detract from the aesthetic beauty of the ring.
[0018] The ornamental ring of the present invention is constructed of a single piece of material, such as silver, gold, brass, bronze, platinum or other metal or alloy. The material used to construct the ring of the present invention is substantially rigid, such that it will not significantly deform during normal usage. The material used is also sufficiently malleable to the extent that when sufficient stretching or compressive force is placed upon the adjustment structure, it will expand or contract to reach the desired size. Once it has reach the desired size and the force has been released, the ring will maintain the new size.
[0019] The adjustment device of the present invention facilitates the continuously variable expansion and contraction of the shank over a wide range of sizes. In preferred embodiments, the adjustment structure is spring-like or accordion-like in its configuration having the shape of a helix, sawtooth pattern, or other regularly repeating configuration. It provides the shank of the ring with an excess amount of material configured so that it may be coiled in contraction or spread in extension.
BRIEF DESCRIPTION OF THE DRAWINGS
[0020] The invention is illustrated in the figures of the accompanying drawings which are meant to be exemplary and not limiting, in which like references refer to like or corresponding parts, and in which:
Fig. 1 is an elevational view of a ring in accordance with one preferred embodiment of the present invention;
Fig. 2 is an elevational view of the ring of Fig. 1, shown expanded in size;
Fig. 3 is an elevational view of the ring of Fig. 1, shown expanded further in size;
Fig. 4 is an elevational view of an alternate embodiment of a ring designed in accordance with the present invention;
Fig. 5 is an elevational view of the ring of Fig. 4, shown expanded in size; and
Fig. 6 is an elevational view of the ring of Fig. 4, shown expanded further in size.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
[0021] Referring to Fig. 1, one preferred embodiment of a ring in accordance with the present invention has a substantially round shank 10, an adjustment structure 20, and a setting or jewel retaining structure 30. The shank 10 is defined by a body 12 having an interior surface 14, exterior surface 16, and two opposing side surfaces 18. The circumference of the interior surface 14 corresponds to the size of the finger upon which the ring is to be worn. The side surfaces 18 may be substantially parallel to each other, or may narrow subject to the aesthetic and stylistic considerations of the design of the ring.
[0022] The adjustment structure 20 is integrally formed with, and forms part of the shank 10. In the embodiment shown in Fig. 1, the adjustment structure 20 is located along the bottom of shank 10, that is, at the opposite side of the shank 10 from the setting 30. The adjustment structure may be positioned at other places along the shank 10, including directly under the setting 30. However, positioning of the adjustment structure 30 at the bottom of the shank 10 shields the structure 20 from view and helps to prevent the shank 10 from turning about the wearer's finger, as explained further below.
[0023] In the embodiment shown in Fig. 1, the adjustment structure 20 is an accordion- or spring-like structure having a sawtooth design which can expand and contract under the influence of pressure. To expand the shank 10, pressure is applied by forcing the ring onto a ring roller or expander, such as a conventional roller or expander as known to those of skill in the art, which then exerts substantially equally distributed force onto the interior surface 14. There interior surface expands in circumference by stretching the spring-like adjustment structure 20. To contract the shank 10, pressure is applied by squeezing the shank 10 on opposing sides of the exterior surface 16 at points which are equidistant to the opposing ends of the adjustment structure 20, thus compressing the structure 20. In either case, the adjustment structure 20 will expand or contract substantially more than the rest of the shank 10 as will be recognized by one of skill in the art.
[0024] Alternatively, the shank 10 may be expanded or contracted by the application of pressure onto either the grooves or troughs 21A of the adjustment structure 20, to contract the adjustment structure, or the peaks 21B, to expand the structure. This pressure is preferably applied substantially equally to all grooves 21A or peaks 21B in the adjustment structure 20 to contract or expand the adjustment structure in a uniform manner.
[0025] The corrugations 22 of the adjustment structure 20 extend within the interior of the shank 10 and beyond the exterior surface 16 of the shank 10. The corrugations 22 are movingly adjustable along the interior surface 14 and the exterior surface 16. When the ring is configured such that interior surface 14 is at its smallest circumferencial size, the corrugations 22 are in maximum compression. When the ring is configured such that interior surface 16 is at its largest circumferencial size, the corrugations 22 are in maximum extension. The ring size may be configured in a continuously variable manner within the range of the smallest and largest circumferencial size of the interior surface 14.
[0026] Figs. 1-3 show a ring at different sizes. Fig. 1 shows a preferred embodiment with the adjustment structure 20 having corrugations 22 being near maximum compression and the ring having a size of 5. Thus, the interior surface 14 is configured such that it is near its smallest size. Fig. 2 shows the preferred embodiment of Fig. 1 with the adjustment structure 20 having corrugations 22 being between full extension and full compression, at a ring size of a about 7. Thus, the interior surface 14 is configured such that it is at a moderate size between its maximum and minimum sizes. Fig, 3 shows the preferred embodiment of Fig. 1 with the adjustment structure 20 having corrugations 22 being near maximum extension, at ring size of about 9. Thus, the interior surface 14 is configured such that it is near its largest size. Thus, rings may be sized with a range of at least four sizes, two up and two down from a median size, at any level of precision, such as at half-sizes, etc.
[0027] In an alternate embodiment, shown in Figs. 4-6, the adjustment structure 20' is comprised of a helical spring design or helix 24. The helix 24 is defined as the path followed by a point moving on the surface of a right circular cylinder that moves along the cylinder at a constant ratio as it moves around the cylinder. The length of the helix 24 and its radius are inversely proportional. Thus, as length increase, the radius decreases, and as length decreases, the radius increases.
[0028] The helix 24 is located about an imaginary cylinder that substantially runs lengthwise along the interior surface 14 and the exterior surface 16. The helix 24 is movingly adjustable along the imaginary cylinder. When the ring is configured such that interior surface 14 is at its smallest circumferencial size, the helix is in maximum compression. The length of the helix 24 is at its minimum and the radius of the helix 24 is at its maximum. When the ring is configured such that interior surface 14 is at its largest circumferencial size, the helix 24 is in substantially full extension. The length of the helix 24 is at its maximum and the radius of the helix 24 is at its minimum (approaching zero).
[0029] Figs. 4-6 show the alternate embodiment of the ring at different sizes. Fig. 4 shows the alternate embodiment with the adjustment structure 20' having a helix 24 of large radius and short length. The helix 24 is near full compression. Thus, the interior surface 14 is configured such that it is near its minimum size, with the ring having a size of about 5. Fig. 5 shows the alternative embodiment with the adjustment structure 20' having a helix 24 of moderate radius and length. The helix 24 is between full extension and full compression. Thus, the interior surface 14 is configured such that it is at a moderate size between its maximum and minimum sizes, with the ring at a size of about 7. Fig. 6 shows a further expanded ring of size about 9 with the helix 24 being stretched to a large length and short radius.
[0030] Over-extension of the adjustment structure is preferably to be avoided. Over-extension of adjustment structure 20 causes the material which comprises it to lose its "memory" or ability to return to its previous shape. This would leave the ring permanently in its largest configuration and size. Although this would not destroy the capacity of the ring to be worn, it would adversely effect the ability of the adjustment structure to function, leaving the ring permanently in its largest size configuration.
[0031] The dimensions of preferred embodiments of the designs shown in Figs. 1 and 4 are in the range of about 1 mm to 5 mm for the width of the shank 10 and about 0.5 mm to 2 mm for the thickness of the shank 10.
[0032] The shank 10 is constructed of a substantially rigid yet malleable precious metal or alloy, such as a gold, silver, copper, or an alloy thereof. The shank 10 with integrally formed adjustment structure 20 is molded from a die cut in the shape of the shank with adjustment structure 20. The die for the shank 10 shown in Fig. 1 is relatively simple and requires only two halves. The die for the shank shown in Fig. 4 requires additional pieces to form the hollowed out portion of the helix 24.
[0033] The ring may be unadorned or may have a setting. In the preferred embodiments shown in Figs. 1-6, the ring further comprises a setting or jewel retaining structure 30 for retaining jewels or ornaments within the ring. The setting 30 can be configured in a variety of ways, or need not be present at all, as in the well-known case of wedding bands. In configuration shown in the drawings, the setting 30 comprises a plurality of tines 32 which extend outwardly from the top of exterior surface 16, opposite the adjustment structure 20. The tines 32 are arranged such that they may frictionally and joiningly retain a jewel 34. The tines 32 are constructed of the same material as the shank 10.
[0034] In accordance with a further advantage of the present invention, the corrugations 22 of the accordion-like adjustment structure 20 shown in Fig. 1, the turns of the helix 24 shown in Fig. 4, and the alternating troughs or grooves in both leave opposing temporary impressions in a wearer's finger. These impressions help "lock" the adjustment structure 20 in place on the wearer's finger, and prevent the ring from turning or rotating about the finger in an undesired manner or from unintentionally slipping off the wearer's finger. Further, the accordion-like structure's surface has up to 70% more contact area with the wearer's finger than a planar portion of the interior surface 14, thus providing a better fit. In addition, the corrugations 22 each have an acute point 23 on the interior surface 14 of the shank 10, which points are sufficiently sharp so as to facilitate additional frictional engagement with the finger of the ring wearer. Of course, the points 23 are not so sharp as to cause discomfort or injury to the ring wearer.
[0035] While the invention has been described and illustrated in connection with preferred embodiments, many variations and modifications as will be evident to those skilled in this art may be made without departing from the spirit and scope of the invention. For example, the accordion-like adjustment structure 20 may have other designs, such as a regular wavelike design or other designs recognized by those of skill in the art. The invention is thus not to be limited to the precise details of methodology or construction set forth above as such variations and modification are intended to be included within the scope of the invention.
1. An adjustable ring or bracelet comprising:
a hollow shank comprising a body having an interior surface defining a first area within the shank, the body being constructed of one piece of material which is substantially rigid when worn by a wearer but malleable under force; and
an adjustment structure integrally formed with the body of the shank which expands or contracts under force to thereby expand or contract the interior surface and the first area.
2. An adjustable ring or bracelet as claimed in claim 1, wherein the adjustment structure
comprises at least one corrugation.
3. An adjustable ring or bracelet as claimed in claim 2, wherein the at least one corrugation
extends into the first area.
4. An adjustable ring or bracelet as claimed in claim 1, wherein the shank has an exterior
surface opposing the interior surface, and wherein the adjustment structure comprises
at least one corrugation extending beyond the exterior surface.
5. An adjustable ring or bracelet as claimed in any of claims 2 to 4, wherein an end
of the at least one corrugation comes to an acute point.
6. An adjustable ring or bracelet as claimed in claim 1, wherein the adjustment structure
is located at a bottom portion of the shank.
7. An adjustable ring or bracelet as claimed in any preceding claim, comprising means
for retaining at least one ornamental accoutrement on a top portion of the shank.
8. An adjustable ring or bracelet as claimed in any preceding claim, wherein the adjustment
structure comprises an accordion-like structure formed in the shank.
9. An adjustable ring or bracelet as claim 8, wherein the accordion-like structure has
a helical shape.
10. An adjustable ring or bracelet as claimed in claim 8, wherein the accordion-like structure
has a sawtooth shape.
11. A one-piece, adjustable size band for a ring or bracelet, the band comprising a spring-like
structure formed in a portion of the band which expands or contracts under force to
thereby expand or contract an interior area within the band.
12. A band as claimed in claim 11, wherein the spring-like structure comprises a plurality
of corrugations extending within the interior area of the band.
13. A band as claimed in claim 11, wherein the spring-like structure comprises a plurality
of corrugations extending in a direction perpendicular to the plane of the band.
14. A band as claimed in claim 11, wherein the spring-like structure has a helical shape.
15. A band as claimed in claim 11, wherein the spring-like structure has a sawtooth shape.