(19)
(11)EP 3 203 869 B1

(12)EUROPEAN PATENT SPECIFICATION

(45)Mention of the grant of the patent:
25.03.2020 Bulletin 2020/13

(21)Application number: 15848550.8

(22)Date of filing:  08.10.2015
(51)International Patent Classification (IPC): 
A42B 3/22(2006.01)
(86)International application number:
PCT/US2015/054687
(87)International publication number:
WO 2016/057792 (14.04.2016 Gazette  2016/15)

(54)

HELMET MOUNTED VISOR

HELMMONTIERTES VISIER

VISIÈRE MONTÉE SUR UN CASQUE


(84)Designated Contracting States:
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

(30)Priority: 09.10.2014 US 201462061823 P

(43)Date of publication of application:
16.08.2017 Bulletin 2017/33

(73)Proprietor: Gentex Corporation
Simpson, PA 18407 (US)

(72)Inventors:
  • NOORDZIJ, Duco W.
    Roslindale, MA 02131 (US)
  • WINTERS, Nathan E.
    Merrimack, NH 03054 (US)
  • HANUDEL, Matthew Anthony
    Waltham, MA 02453 (US)

(74)Representative: Boult Wade Tennant LLP 
Salisbury Square House 8 Salisbury Square
London EC4Y 8AP
London EC4Y 8AP (GB)


(56)References cited: : 
EP-A1- 0 205 545
GB-A- 1 561 597
US-A- 2 433 164
US-A- 5 581 806
US-A- 5 966 738
US-A1- 2008 092 278
US-A1- 2013 212 787
WO-A1-2014/186682
JP-U- S6 373 323
US-A- 4 907 300
US-A- 5 832 566
US-A- 6 041 435
US-A1- 2012 246 807
US-B2- 7 849 517
  
      
    Note: Within nine months from the publication of the mention of the grant of the European patent, any person may give notice to the European Patent Office of opposition to the European patent granted. Notice of opposition shall be filed in a written reasoned statement. It shall not be deemed to have been filed until the opposition fee has been paid. (Art. 99(1) European Patent Convention).


    Description

    FIELD OF THE INVENTION



    [0001] The present invention generally relates to a helmet mounted visor. In some embodiments, the helmet mounted visor is a ballistic ocular shield that removeably mounts to a ballistic helmet.

    [0002] US5966738 describes a head gear which comprises a head piece and a safety lens unit which is coupled to the head piece via a coupling device which incorporates a snap clamp.

    [0003] US6041435 discloses a dielectric face shield bracket that can be used to adjustably couple the face shield to a hard hat or cap. The bracket is constructed solely of dielectric materials and, in one embodiment, comprises a two piece arcuately shaped frame where one piece of the frame hooks over the front brim portion of a full-brimmed hard hat and the other piece is coupled to a face shield. A flexible securing strap is coupled to the frame and extends over the crown of the hard hat, and the strap is used for securely holding the frame piece over the front of the brim portion. A pivot assembly is used in conjunction with the frame pieces to pivot one frame piece with respect to the other using a variable resistance pivot, thereby allowing the face shield to be locked at any position. In another embodiment, the flexible securing strap, amongst other elements, is eliminated and mounting brackets are substituted to allow the bracket to be adapted to a hard cap.

    BRIEF SUMMARY OF THE INVENTION



    [0004] In one embodiment there is a helmet mounted visor comprising a lens configured to extend across substantially all of a user's face; and a pair of mount arms coupled to the lens and each configured to releaseably mount to a mount attached to a helmet. The pair of mount arms each include first and second portions, the first portion being rotatably coupled to the second portion. In one embodiment, the first portion is configured to be rotated between and held in two or more positions relative to the second portion. In one embodiment, the two or more positions include a use position where the lens is positioned in front of the user's face and a stowage position where the lens is positioned over a top surface of the helmet. In one embodiment, the two or more positions include a middle position where the lens is positioned between the use position and the stowage position. At least one of the pair of mount arms includes a locking mechanism configured to lock the first portion relative to the second portion, the locking mechanism includes a drum brake. In one embodiment, the locking mechanism includes a lever configured to selectively lock and release the drum brake.

    [0005] In one embodiment, the first portion is rotatable relative to the second portion about a first axis and the pair of mount arms each include a third portion, the first portion being rotatably coupled to the third portion about a second axis, the second axis being generally perpendicular to the first axis. In one embodiment, the mount is a rail. In one embodiment, the rail is attached to the helmet using fasteners that extend through existing holes in the helmet. In one embodiment, the pair of mount arms each include a projection configured to attach to a groove in the mount in a plurality of positions along the groove. In one embodiment, a position of the projections are adjustable relative to the pair of mount arms. In one embodiment, the lens has a thickness of at least approximately 28 mm. In one embodiment, the lens has a height of at least approximately 127 mm. In one embodiment, the mount arms are configured to mount to the helmet to position the lens at a plurality of distances from the user's face. In one embodiment, a flange is mounted to the top of the lens and extends toward the mount arms.

    BRIEF DESCRIPTION OF THE SEVERAL VIEWS OF THE DRAWINGS



    [0006] The following detailed description of embodiments of the helmet mounted visor will be better understood when read in conjunction with the appended drawings of an exemplary embodiment. It should be understood, however, that the invention is not limited to the precise arrangements and instrumentalities shown.

    [0007] In the drawings:

    Fig. 1 is a perspective view of a helmet mounted visor and mounting halo as known in the prior art shown mounted to a helmet;

    Fig. 2 is a perspective view of a helmet mounted visor not forming part of the present invention shown mounted to a helmet and in the use position;

    Fig. 3 is a perspective view of the helmet mounted visor shown in Fig. 2;

    Fig. 4 is a partial left side view of the helmet mounted of Fig. 2 shown mounted to a helmet, in the use position, and with an outer portion of the joint removed for clarity;

    Fig. 5 is a right side view of the helmet mounted visor of Fig. 2 shown in the use position;

    Fig. 6 is a left side view of the helmet mounted visor of Fig. 2 shown mounted to a helmet and in the use position;

    Fig. 7 is a left side view of the helmet mounted visor of Fig. 2 shown mounted to a helmet and in the middle position;

    Fig. 8 is a left side view of the helmet mounted visor of Fig. 2 shown mounted to a helmet and in the stowage position;

    Fig. 9 is a perspective view of a helmet mounted visor in accordance with an exemplary embodiment of the present invention shown mounted to a helmet and in the use position;

    Fig. 10 is a perspective view of the helmet mounted visor shown in Fig. 9;

    Fig. 11 is a right side view of the mount arms of helmet mounted visor of Fig. 9 shown in the use position;

    Fig. 12 is a partial left side view of the helmet mounted visor of Fig. 9 shown with an outer portion of the joint removed showing the lock in the unlocked position;

    Fig. 13 is a partial left side view of the helmet mounted visor of Fig. 9 shown with an outer portion of the joint removed showing the lock in the locked position;

    Fig. 14 is a left side view of the helmet mounted visor of Fig. 9 shown mounted to a helmet and in the use position;

    Fig. 15 is a left side view of the helmet mounted visor of Fig. 9 shown mounted to a helmet and locked in the middle position; and

    Fig. 16 is a left side view of the helmet mounted visor of Fig. 2 shown mounted to a helmet and locked in the stowage position.


    DETAILED DESCRIPTION OF THE INVENTION



    [0008] Referring to Fig. 1, a helmet mounted visor 12, also referred to as ballistic ocular shield or 9 mm ballistic face shield, is designed to protect a user's face and eyes from ballistic projectiles and other objects. In some instances, the helmet mounted visor 12 includes a lens 18 designed to protect a user's face and eyes from a 9 mm, 124 grain full metal jacket (FMJ) projectile. The lens 18 may be designed to protect a user's face from other projectiles such as a 10.9 mm ("44 Mag") projectile. The lens 18 may provide ballistic protection levels of V0 1400 feet per second (FPS, 0.43 km/s), level IIIA velocity or V0 1175 FPS (0.36 km/s), level II Velocity. The level III A version may also defeat with no penetration V0 the 17 grain fragmentation simulator at a minimum velocity of 2000 FPS (0.61 km/s). The V0 1400 feet per second (0.43 km/s) lens weighs approximately 54.2 ounces (1.69 Kg) and the V0 1175 feet per second (0.36 km/s) lens weighs approximately 44.7 ounces (1.39 Kg).

    [0009] The helmet mounted visor 12 attaches to a helmet 16. Traditional helmet mounted visors 12 attach to the helmet 16 via a very bulky "halo" system 14 which includes a plastic band that wraps around the helmet 16 and is secured to the helmet 16 via a ratcheting band. The halo system 14 does not fit one helmet to the next consistently. Additionally, any mounts such as shrouds and rails must be removed from the helmet 16 before using the halo system 14 which may take time and defeat the ability of the mounts to provide additional helmet utility.

    [0010] Referring to the drawings in detail, wherein like reference numerals indicate like elements throughout, there is shown in Figs. 2-8 a helmet mounted visor, generally designated 10, in accordance with a first exemplary embodiment not forming part of the present invention.

    [0011] Referring to Fig. 3, the helmet mounted visor 10 includes a lens 18. In one embodiment, the lens 18 is configured to extend across substantially all of a user's face. In one embodiment, the lens 18 is curved to extend across the front and sides of the user's face. The lens 18 may be transparent. In other embodiments, the lens 18 has a tint. The lens 18 may be frameless. In other embodiments, the lens 18 may include a frame extending around at least a portion of the outer periphery. In one embodiment, the lens 18 is approximately 28 mm thick, 280 mm wide and 127 mm high. In one embodiment, the lens 18 is approximately 150 mm or approximately 178 mm high. In one embodiment, the lens 18 is comprised of a ballistic material such as a polycarbonate substrate with an acrylic laminate.

    [0012] The helmet mounted visor 10 may include a pair of mount arms 20 coupled to the lens 18 and each configured to releaseably mount to a mount 30 attached to a helmet 16 (see Fig. 2). The pair of mount arms 20 may each include first and second portions 20a, 20b, where the first portion 20a is rotatably coupled to the second portion 20b about joint 22. A fastener 24 may extend through the joint 22. The first portion 20a may rotate relative to the second portion 20b about an axis of the fastener 24. In one embodiment, the first portion 20a is configured to be rotated relative to the second portion 20b between and held in two or more positions. The two or more positions may include a use position where the lens is positioned in front of the user's face (Figs. 2 and 4) and a stowage position where the lens is positioned proximate the top of the helmet (Fig. 8). The helmet mounted visor 10 may also include a sighting or middle position where the lens 18 is positioned between the use position and the stowage position (Fig. 7).

    [0013] Referring to Fig. 3, an end of the first portion 20a may be attached to the lens 18 using one or more fasteners 26. In one embodiment, the first portion 20a is coupled to a rear surface of the lens 18 and two fasteners 26 extend through the lens 18 to a front surface of the lens 18. The first portion 20a may include one or more apertures 28. In one embodiment, the one or more apertures 28 is generally triangular. The one or more apertures 28 may be included to reduce the weight of the first portion 20a while maintaining its strength. A second end of the first portion 20a may be coupled to the second portion 20b by joint 22. Second portion 20b may be configured to releaseably attach to a mount 30 (see Fig. 2).

    [0014] Referring to Fig. 2, in one embodiment, the mount 30 is a rail. In one embodiment, the mount 30 is attached to the helmet 16 using fasteners that extend through existing holes in the helmet 16. In one embodiment, the mount 30 is attached to the helmet 16 using a helmet cover. In one embodiment, the mount 30 extends only partially around the perimeter of the helmet 16. In one embodiment, the mount 30 is configured to attach additional accessories such as lights, communication devices, and mandible shields, to the helmet 16. The mount 30 may be a rail similar to the rails disclosed in U.S. Patent No. 7,849,517.

    [0015] Referring to Fig. 3, the second portion 20b may include a dove tail shaped projection 32 configured slide into and attach to a corresponding dove tail shaped groove in the mount 30. The second portion 20b may be mounted to the mount 30 in one of a plurality of positions along the mount 30 such that the distance between the user's face and the inside surface of the lens 18 is adjustable. In one embodiment, the projection 32 is locked or retained in the groove of the mount 30 by a locking mechanism 34. The locking mechanism 34 may include a leaf spring having a projection 34a that is configured to mate with one of a plurality of indentations along the length of the mount 30 and prevents the second portion 20b from being slid laterally relative to the mount 30. In one embodiment, pulling a tab 34b (see Fig. 5) of the locking mechanism 34 outwardly from the mount 30 releases the locking mechanism 34 (e.g., uncouples the projection 34a from an indentation in the mount 30) and allows the second portion 20b to be slid along the groove of the mount 30.

    [0016] In one embodiment, the first and second portions 20a, 20b are comprised of metal. In one embodiment, the first and second portions 20a, 20b are comprised of aluminum. The first and second portions 20a, 20b may be comprised of metal and have a plastic overmold. In other embodiments, the first and second portions 20a, 20b are comprised entirely of plastic.

    [0017] Referring to Fig. 4, in one embodiment, at least one of the mount arms 20 includes a locking mechanism 20c configured to lock the first portion 20a relative to the second portion 20b. The locking mechanism 20c may be slideably coupled to the second portion 20b and spring biased toward the first portion 20a. The locking mechanism 20c may be coupled to the second portion 20b by the fasteners 38 and include corresponding apertures 20d that allow for the locking mechanism 20c to slide away from the first portion 20a. The locking mechanism 20c may include a projection 44 that is configured to extend into indentations 46a, 46b, 46c that correspond to the use, middle, and stowage positions of the helmet mounted visor 10 respectively. In one embodiment, the projection 44 extends into the first indentation 46a in the use position, into the second indentation 46b in the middle position, into the third indentation 46c in the stowage position. To unlock the mount arm 20 from the use position for example, the user pulls the locking mechanism 20c back away from the first portion 20a such that the projection 44 is removed from the first indentation 46a, rotates the first portion 20a clockwise relative to the second portion 20b to the middle position and then releases the locking mechanism 20c such that the spring biases the locking mechanism 20c toward the first portion 20a and the projection is inserted into the second indentation 46b preventing further movement of the first portion 20a relative to the second portion 20b.

    [0018] The first portion 20a may include a slot 40 that receives a pin 42 extending from the second portion 20b. The slot 40 and pin 42 may be configured to prevent the first portion 20a from rotating relative to the second portion 20b past predetermined limit angles or positions (e.g., between parallel and perpendicular). The locking mechanism 20c may include a plurality of ridges 48 to provide enhanced grip with the user's hand or thumb while releasing the locking mechanism 20c.

    [0019] Referring to Fig. 5, the second portion 20b may include an additional mount portion 36. The mount portion 36 may be attached to the second portion 20b with one or more fasteners 38. The mount portion 36 may include one or more features 36a such as grooves and/or projections that allow for additional accessories to be attached to the second portion 20b. In one embodiment, the one or more features 36a include a plurality of vertical grooves and ridges. In one embodiment, the mount portion 36 includes a portion of a Picatinny rail.

    [0020] Referring to Fig. 6, the helmet 16 may be any type of head protection helmet known in the art, for example, those used for sporting, police, or military purposes. In certain embodiments, helmet 16 is a standard infantry ballistic helmet. In some embodiments, helmet 16 is an advanced combat helmet (ACH), a modular integrated communications helmet (MICH), a tactical ballistic helmet (TBH) II helmet, a lightweight marine helmet, a personnel armor system for ground troops (PASGT) helmet or police general duty helmets.

    [0021] In some embodiments, by using mount arms 20a, 20b to attach the lens 18 to a mount 30 rather than using a halo system increases stability, reduces bulk, allows for usage with different helmets, and allows for the mounts 30 to remain on the helmet. In addition, a significant weight savings may be achieved. A traditional 9mm visor kit such as the one shown in Fig. 1 weighs approximately 1,464 grams. While, in some embodiments, the helmet mounted visor 10 weighs less than approximately 1,264 grams. In addition, the helmet mounted visor 10 may be operated with one hand to adjust the lens from a fully closed or use position, to a fully open or stowage position to a middle position.

    [0022] Fig. 6 shows the helmet mounted visor 10 in the use position from a side view. In one embodiment, the first portion 20a is generally parallel to the second portion 20b in the use position. As the locking mechanism 20c is moved to the aft position with the user's thumb, the lens 18 can pivot up as shown in Figs. 7 and 8. Releasing the locking mechanism 20c and pivoting the lens 18 can be accomplished with one hand of the user. The thumb of the user pushes back on the release mechanism 20c in the aft direction while the fingers or palm of the hand pivot up the lens 18 relative to the second portion 20b.

    [0023] Fig. 7 shows the helmet mounted visor 10 in the middle position. In one embodiment, the first portion 20a is approximately 45 degrees relative to the second portion 20b in the middle position. Pivoting up the lens 18 into the middle position may allow the user to partially expose their face and provide partial protection while clearing the lens 18 from moisture or dirt on the inside surface, sighting a weapon, communicating more clearly, donning or doffing a gas mask to the user's face, or accessing food or drink.

    [0024] Fig. 8 shows the helmet mounted visor 10 in the fully upright or stowage position. In one embodiment, the first portion 20a is approximately perpendicular to the second portion 20b in the stowage position. Pivoting up the lens 18 into the stowage position may allow the user to substantially expose their face when the lens 18 is no longer needed but not ready to detach the helmet mounted visor 10 from the helmet 16. Pivoting the lens 18 to the stowage position allows the user to remove the lens 18 from their field of vision while allowing the lens 18 to be quickly deployed to the use position.

    [0025] Once pivoted to the desired position, the helmet mounted visor 10 may remain locked in the use, stowage or middle positions such that the first portion 20a does not move relative to the second portion 20b until the locking mechanism 20c is released.

    [0026] Referring to the drawings in detail, wherein like reference numerals indicate like elements throughout, there is shown in Figs. 9-16 a helmet mounted visor, generally designated 110, in accordance with an exemplary embodiment of the present invention. One or more of the embodiments discussed in reference to the helmet mounted visor 110 described below may be combined with one or more desirable features of the embodiments discussed in reference to the helmet mounted visor 10 described above.

    [0027] Referring to Figs. 9 and 10, the helmet mounted visor 110 includes a lens 118. In one embodiment, the lens 118 is configured to extend across substantially all of a user's face. In one embodiment, the lens 18 is curved to extend across the front and sides of the user's face. The lens 118 may be transparent. In other embodiments, the lens 118 has a tint. The lens 118 may be frameless. In other embodiments, the lens 118 may include a frame extending around at least a portion of the outer periphery. In one embodiment, the lens 118 is approximately 28 mm thick, 280 mm wide and 127 mm high. In one embodiment, the lens 118 is approximately 150 mm or approximately 178 mm high. In one embodiment, the lens 118 is comprised of a ballistic material such as a polycarbonate substrate with an acrylic laminate.

    [0028] The helmet mounted visor 110 includes a pair of mount arms 120 coupled to the lens 118 and each configured to releaseably mount to a mount 130 attached to a helmet 116 (see Fig. 9). The pair of mount arms 120 each include first, second, and third portions 120a, 120b, 120c, where the first portion 120a is rotatably coupled to the second portion 120b about joint 122. A fastener 124 may extend through the joint 122. The first portion 120a may rotate relative to the second portion 120b about an axis A1 of the fastener 124. In one embodiment, axis A1 is generally parallel to a plane extending through mount arms 120. In one embodiment, the first portion 120a is configured to be rotated relative to the second portion 120b between and held in two or more positions. The two or more positions may include a use position where the lens 118 is positioned in front of the user's face (Figs. 9 and 14) and a stowage position where the lens 118 is positioned proximate the top of the helmet 116 (Fig. 16). The helmet mounted visor 110 may also include a sighting or middle position where the lens 118 is positioned between the use position and the stowage position (Fig. 15).

    [0029] The mount arms 120 may be laterally rotatable relative to the lens 18. The mount arms 120 may be rotatable relative to the lens 18 similar to eyeglasses so that the helmet mounted visor 110 may be used with a variety of different sized helmets 116 and/or the mount arms 120 may be folded inwardly when not mounted to the helmet 116 to reduce the overall size of the helmet mounted visor 110. In one embodiment, the first portion 120a is rotatably coupled to a third portion 120c mounted to the lens 18. The first portion 120a may be coupled to the third portion 120c by a hinge 150 having an axis A2. In one embodiment, the axis A2 of the hinge 150 may be generally perpendicular to the axis A1 of the fastener 124.

    [0030] An end of the third portion 120c may be attached to the lens 118 using one or more fasteners 126. In one embodiment, the third portion 120c is coupled to a front surface of the lens 118 and two fasteners 126 extend through the lens 118 to a rear surface of the lens 118. A flange 152 may be provided on the top of the lens 118 that extends back toward the second portions 120b. The flange 152 may be configured to extend from the top of the lens 118 to the external surface of the helmet 116 to prevent debris from going between the user's face and the inside surface of the lens 118. In one embodiment, the flange 152 has an outer edge that is curved to generally match the contour of the outer surface of the lens 118 and an inner edge that is curved to generally match the contour of the external surface of the helmet 116. In one embodiment, a portion of the flange 152 wraps around the top edge of the lens 118 and is sandwiched between the ends of the third portion 120c and the outside surface of the lens 118 to fasten the flange 152 to the lens 118.

    [0031] Referring to Fig. 9, in one embodiment, the mount 130 is a rail. In one embodiment, the mount 130 is attached to the helmet 116 using fasteners that extend through existing holes in the helmet 116. In one embodiment, the mount 130 is attached to the helmet 116 using a helmet cover. In one embodiment, the mount 130 extends only partially around the perimeter of the helmet 116. In one embodiment, the mount 130 is configured to attach additional accessories such as lights, communication devices, and mandible shields, to the helmet 116. The mount 130 may be a rail similar to the rails disclosed in U.S. Patent No. 7,849,517.

    [0032] Referring to Fig. 11, the second portion 120b may include a projection 132 configured to extend into the groove 130a in the mount 130. In one embodiment the projection 132 is rectangular shaped. In another embodiment, the projection 132 is dove tail shaped. The second portion 120b may be mounted to the mount 130 in one of a plurality of positions along the mount 130 such that the distance between the user's face and the inside surface of the lens 118 is adjustable. In one embodiment, the projection 132 is adjustable toward and away from the lens 118 relative to the mount arm 120 to provide fine tuning of the distance between the user's face and the inside surface of the lens 118. The projection 132 may be locked in place relative to the mount arm 120 by a fastener 132a. In one embodiment, the projection 132 is locked or retained in the groove 130a of the mount 130 by a locking mechanism 134. The locking mechanism 134 may include a knob 134b having an extension arm 134a that is configured to mate with one of a plurality of indentations 130b along the length of the mount 130 and prevent the second portion 120b from detaching from the mount 130. The extension arm 134a may be generally rectangular in shape. In one embodiment, the extension arm 134a extends into an indentation 130b and then the knob 134b is rotated to rotate the extension arm 134a 90 degrees. In one embodiment, twisting the knob 134b also pulls the extension arm 134a closer to the projection 132 to sandwich the rail 130 between the extension arm 134a and the projection 132. In one embodiment, twisting the knob 134b of the locking mechanism 134 in the opposite direction releases the locking mechanism 134 (e.g., uncouples the extension arm 134a from an indentation in the mount 130) and allows the second portion 120b to be removed from the mount 130.

    [0033] In one embodiment, the first, second, and third portions 120a, 120b, 120c are comprised of metal. In one embodiment, the first, second, and third portions 120a, 120b, 120c are comprised of aluminum. The first, second, and third portions 120a, 120b, 120c may be comprised of metal and have a plastic overmold. In other embodiments, the first, second, and third portions 120a, 120b are comprised entirely of plastic.

    [0034] Referring to Figs. 12 and 13, at least one of the mount arms 120 includes a locking mechanism 154 configured to lock the first portion 120a relative to the second portion 120b. The locking mechanism 154 may selectively lock the first portion 120a relative to the second portion 120b in the use position, the stowage position, and any desired middle position between the use and stowage positions. The helmet mounted visor 110 may include one locking mechanism on either side (e.g., on one mount arm 120 or the other) or a locking mechanism 154 on both sides as shown. The locking mechanism 154 includes a drum brake 158. In one embodiment, the drum brake 158 includes a first shoe 158a rotatably coupled to a second shoe 158b about a pin 158c. The first and second shoes 158a, 158b may each include a brake pad 158d, 158e. The first and second shoes 158a, 158b may be coupled by an actuator 160 such as a weak knee joint. The weak knee joint may include two linkages 158f, 158g that are pivotably connected between the first and second shoes 158a, 158b. In the unlocked position (see e.g., Fig. 12), the drum brake 158 is not engaged and the first portion 120a is free to move relative to the second portion 120b. In the locked position (see e.g., Fig. 13), the brake pads 158d, 158e may be frictionally engaged with the inside surface of the housing 154a of the locking mechanism 154 to prevent or at least strongly resist the first portion 120a being moveable relative to the second portion 120b. A lever 156 may be provided for engaging and disengaging the locking mechanism 154. The lever 156 may include an arm 156a that is coupled to the linkages 158f, 158g. In one embodiment, pulling the lever 156 downwardly pivots the linkages 158f, 158g upwardly and into the locked position. In one embodiment, pushing the lever 156 upwardly pivots the linkages 158f, 158g downwardly and into the unlocked position. The locking mechanism 154 may include one or more limiters, such as a set screw, that is configured to prevent the drum brake 158 from rotating past the use and/or stowage positions.

    [0035] Referring to Fig. 14, the helmet 116 may be any type of head protection helmet known in the art, for example, those used for sporting, police, or military purposes. In certain embodiments, helmet 116 is a standard infantry ballistic helmet. In some embodiments, helmet 116 is an advanced combat helmet (ACH), a modular integrated communications helmet (MICH), a tactical ballistic helmet (TBH) II helmet, a lightweight marine helmet, a personnel armor system for ground troops (PASGT) helmet or police general duty helmets.

    [0036] Using mount arms 120a, 120b to attach the lens 118 to a mount 130 rather than using a halo system increases stability, reduces bulk, allows for usage with different helmets, and allows for the mounts 130 to remain on the helmet 116. In addition, the helmet mounted visor 110 may be operated with one hand to adjust the lens from a fully closed or use position, to a fully open or stowage position to a middle position.

    [0037] Fig. 14 shows the helmet mounted visor 110 in the use position from a side view. In one embodiment, the first portion 120a is generally parallel to the second portion 120b (or the groove 130a of the rail 130) in the use position. After the locking mechanism(s) 154 is unlocked by pulling up on the lever 156, the lens 118 can pivot up as shown in Figs. 15 and 16. Releasing the locking mechanism 154 and pivoting the lens 118 can be accomplished with one hand of the user. The thumb of one hand of the user pushes up on the lever 156 and then the fingers or palm of the hand may then pivot up the lens 118 relative to the second portion 120b.

    [0038] Fig. 15 shows the helmet mounted visor 110 in the middle position. In one embodiment, the first portion 120a is approximately 45 degrees relative to the second portion 120b (or the groove 130a of the rail 130) in the middle position. Pivoting up the lens 118 into the middle position may allow the user to partially expose their face to clear the lens 118 from moisture or dirt on the inside surface, communicate more clearly, don or doff a gas mask to the user's face, or access food or drink.

    [0039] Fig. 16 shows the helmet mounted visor 110 in the fully upright or stowage position. In one embodiment, the first portion 120a is approximately 80 degrees to the second portion 20b (or the groove 130a of the rail 130) in the stowage position. Pivoting up the lens 118 into the stowage position may allow the user to substantially expose their face when the lens 118 is no longer needed but not ready to detach the helmet mounted visor 110 from the helmet 116. Pivoting the lens 118 to the stowage position may allow the user to remove the lens 118 from their field of vision while allowing the lens 118 to be quickly deployed to the use position.

    [0040] Once pivoted to the desired position, the helmet mounted visor 110 may remain locked in the use, stowage or middle positions such that the first portion 120a does not move relative to the second portion 120b until the locking mechanism 154 is released.

    [0041]  It is understood, that this invention is not limited to the exemplary embodiments shown and described, but it is intended to cover modifications within the scope of the present invention as defined by the claims. For example, specific features of the exemplary embodiments may or may not be part of the claimed invention and various features of the disclosed embodiments may be combined. Unless specifically set forth herein, the terms "a", "an" and "the" are not limited to one element but instead should be read as meaning "at least one".

    [0042] It is to be understood that at least some of the figures and descriptions of the invention have been simplified to focus on elements that are relevant for a clear understanding of the invention, while eliminating, for purposes of clarity, other elements that those of ordinary skill in the art will appreciate may also comprise a portion of the invention. However, because such elements are well known in the art, and because they do not necessarily facilitate a better understanding of the invention, a description of such elements is not provided herein.


    Claims

    1. A helmet mounted visor (110) comprising:

    a lens (118) configured to extend across substantially all of a user's face; and

    a pair of mount arms (120) coupled to the lens, each mount arm being configured to releaseably mount to a mount (130) attached to a helmet (116);

    the pair of mount arms (120) each including first (120a) and second portions (120b), the first portion (120a) being rotatably coupled to the second portion (120b); and

    wherein at least one of the pair of mount arms (120) includes a locking mechanism (154) configured to lock the first portion (120a) relative to the second portion (120b);

    characterized in that the locking mechanism (154) includes a drum brake (158).


     
    2. The helmet mounted visor of claim 1, wherein the locking mechanism (154) includes a lever (156) configured to selectively lock and release the drum brake (158).
     
    3. The helmet mounted visor of claim 1, wherein the first portion (120a) is configured to be rotated between and held in two or more positions relative to the second portion (120b).
     
    4. The helmet mounted visor of claim 3, wherein the two or more positions include a use position where the lens (118) is positioned in front of the user's face and a stowage position where the lens (118) is positioned over a top surface of the helmet.
     
    5. The helmet mounted visor of claim 4, wherein the two or more positions include a middle position where the lens (118) is positioned between the use position and the stowage position.
     
    6. The helmet mounted visor of claim 3, wherein the first portion (120a) is rotatable relative to the second portion (120b) about a first axis (A1) and the pair of mount arms each include a third portion (120c), the first portion (120a) being rotatably coupled to the third portion (120c) about a second axis (A2), the second axis (A2) being generally perpendicular to the first axis (A1).
     
    7. The helmet mounted visor of any one of the previous claims, wherein the mount (130) is a rail;
    and optionally wherein the rail is attached to the helmet (116) using fasteners that extend through existing holes in the helmet.
     
    8. The helmet mounted visor of any one of the previous claims, wherein the pair of mount arms (120) each include a projection (132) configured to attach to a groove in the mount (130) in a plurality of positions along the groove.
     
    9. The helmet mounted visor of claim 8, wherein a position of the projections (132) is adjustable relative to the pair of mount arms (120).
     
    10. The helmet mounted visor of any one of the previous claims, wherein the lens (118) has a thickness of at least approximately 28 mm.
     
    11. The helmet mounted visor of any one of the previous claims, wherein the lens (118) has a height of at least approximately 127 mm.
     
    12. The helmet mounted visor of any of the previous claims, wherein the mount arms (120) are configured to mount to the helmet (116) to position the lens (118) at a plurality of distances from the user's face.
     
    13. The helmet mounted visor of any of the previous claims further comprising:
    a flange (152) mounted to the top of the lens (118) and extending toward the mount arms (120).
     


    Ansprüche

    1. Helmmontiertes Visier (110), Folgendes umfassend:

    eine Linse (118), die konfiguriert ist, um sich im Wesentlichen über das gesamte Gesicht eines Benutzers zu erstrecken; und

    ein Paar von mit der Linse gekoppelten Montagearmen (120), wobei jeder Montagearm zur lösbaren Montage an einer an einem Helm (116) angebrachten Halterung (130) konfiguriert ist; wobei das Paar von Montagearmen (120) jeweils einen ersten (120a) und einen zweiten Abschnitt (120b) einschließt, wobei der erste Abschnitt (120a) drehbar mit dem zweiten Abschnitt (120b) verbunden ist; und wobei mindestens einer des Paares von Montagearmen (120) einen Arretiermechanismus (154) einschließt, der konfiguriert ist, um den ersten Abschnitt (120a) relativ zu dem zweiten Abschnitt (120b) zu arretieren; dadurch gekennzeichnet, dass der Arretiermechanismus (154) eine Trommelbremse (158) umfasst.


     
    2. Helmmontiertes Visier nach Anspruch 1, wobei der Arretiermechanismus (154) einen Hebel (156) einschließt, der konfiguriert ist, um die Trommelbremse (158) selektiv zu arretieren und zu lösen.
     
    3. Helmmontiertes Visier nach Anspruch 1, wobei der erste Abschnitt (120a), zur Drehung zwischen und zum Halten in zwei oder mehr Positionen relativ zu dem zweiten Abschnitt (120b) konfiguriert ist.
     
    4. Helmmontiertes Visier nach Anspruch 3, wobei die zwei oder mehr Positionen eine Gebrauchsposition, in der die Linse (118) vor dem Gesicht des Benutzers positioniert ist, und eine Verstauposition, in der die Linse (118) über einer oberen Fläche des Helms positioniert ist, einschließt.
     
    5. Helmmontiertes Visier nach Anspruch 4, wobei die zwei oder mehr Positionen eine mittlere Position, in der die Linse (118) zwischen der Gebrauchsposition und der Verstauposition angeordnet ist, einschließen.
     
    6. Helmmontiertes Visier nach Anspruch 3, wobei der erste Abschnitt (120a) relativ zu dem zweiten Abschnitt (120b) um eine erste Achse (Al) drehbar ist und das Paar von Montagearmen jeweils einen dritten Abschnitt (120c) einschließt, wobei der erste Abschnitt (120a) mit dem dritten Abschnitt (120c) um eine zweite Achse (A2) drehbar gekoppelt ist, wobei die zweite Achse (A2) im Allgemeinen senkrecht zu der ersten Achse (A1) ist.
     
    7. Helmmontiertes Visier nach einem der vorangehenden Ansprüche, wobei die Halterung (130) eine Schiene ist; und wobei die Schiene gegebenenfalls an dem Helm (116) unter Verwendung von Befestigungselementen angebracht ist, die sich durch vorhandene Löcher in dem Helm erstrecken.
     
    8. Helmmontiertes Visier nach einem der vorangehenden Ansprüche, wobei das Paar von Montagearmen (120) jeweils einen Vorsprung (I32) einschließt, der zum Anbringen an einer Nut in der Befestigung (130) in einer Vielzahl von Positionen entlang der Nut konfiguriert ist.
     
    9. Helmmontiertes Visier nach Anspruch 8, wobei eine Position der Vorsprünge (132) relativ zu dem Paar von Montagearmen (120) einstellbar ist.
     
    10. Helmmontiertes Visier nach einem der vorstehenden Ansprüche, wobei die Linse (118) eine Dicke von mindestens etwa 28 mm aufweist.
     
    11. Helmmontiertes Visier nach einem der vorstehenden Ansprüche, wobei die Linse (118) eine Höhe von mindestens etwa 127 mm aufweist.
     
    12. Helmmontiertes Visier nach einem der vorstehenden Ansprüche, wobei die Montagearme (120) zur Montage an dem Helm (116) um die Linse (118) in mehreren Abständen von dem Gesicht des Benutzers zu positionieren.
     
    13. Helmmontiertes Visier nach einem der vorstehenden Ansprüche, ferner Folgendes umfassend: einen Flansch (152), der an der Oberseite der Linse (118) montiert ist und sich in Richtung der Montagearme (120) erstreckt.
     


    Revendications

    1. Visière montée sur un casque (110) comprenant :

    une lentille (118) configurée pour s'étendre sur essentiellement tout le visage d'un utilisateur ; et

    une paire de bras de montage (120) couplés à la lentille, chaque bras de montage étant configuré pour être monté de manière amovible sur un élément de montage (130) fixé à un casque (116) ;

    les bras de la paire de bras de montage (120) comportant chacun une première partie (120a) et une deuxième partie (120b), la première partie (120a) étant couplée en rotation à la deuxième partie (120b) ; et

    dans laquelle au moins l'un de la paire de bras de montage (120) comporte un mécanisme de verrouillage (154) configuré pour verrouiller la première partie (120a) par rapport à la deuxième partie (120b) ;

    caractérisée en ce que

    le mécanisme de verrouillage (154) comporte un frein à tambour (158).


     
    2. Visière montée sur un casque de la revendication 1, dans laquelle le mécanisme de verrouillage (154) comporte un levier (156) configuré pour verrouiller et libérer sélectivement le frein à tambour (158).
     
    3. Visière montée sur un casque de la revendication 1, dans laquelle la première partie (120a) est configurée pour tourner entre et être maintenue dans deux ou plus de deux positions par rapport à la deuxième partie (120b).
     
    4. Visière montée sur un casque de la revendication 3, dans laquelle les deux ou plus de deux positions comportent une position d'utilisation où la lentille (118) est positionnée devant le visage de l'utilisateur et une position de rangement où la lentille (118) est positionnée sur une surface supérieure du casque.
     
    5. Visière montée sur un casque de la revendication 4, dans laquelle les deux ou plus de deux positions comportent une position intermédiaire où la lentille (118) est positionnée entre la position d'utilisation et la position de rangement.
     
    6. Visière montée sur un casque de la revendication 3, dans laquelle la première partie (120a) peut tourner par rapport à la deuxième partie (120b) autour d'un premier axe (A1) et les bras de la paire de bras de montage comportent chacun une troisième partie (120c), la première partie (120a) étant couplée en rotation à la troisième partie (120c) autour d'un deuxième axe (A2), le deuxième axe (A2) étant généralement perpendiculaire au premier axe (A1).
     
    7. Visière montée sur un casque de l'une quelconque des revendications précédentes, dans laquelle l'élément de montage (130) est un rail ;
    et éventuellement dans laquelle le rail est fixé au casque (116) en utilisant des éléments de fixation qui s'étendent à travers des trous existants dans le casque.
     
    8. Visière montée sur un casque de l'une quelconque des revendications précédentes, dans laquelle les bras de la paire de bras de montage (120) comportent chacun une saillie (132) configurée pour se fixer à une rainure dans l'élément de montage (130) dans une pluralité de positions le long de la rainure.
     
    9. Visière montée sur un casque de la revendication 8, dans laquelle une position des saillies (132) est réglable par rapport à la paire de bras de montage (120).
     
    10. Visière montée sur un casque de l'une quelconque des revendications précédentes, dans laquelle la lentille (118) a une épaisseur d'au moins environ 28 mm.
     
    11. Visière montée sur un casque de l'une quelconque des revendications précédentes, dans laquelle la lentille (118) a une hauteur d'au moins environ 127 mm.
     
    12. Visière montée sur un casque de l'une des revendications précédentes, dans laquelle les bras de montage (120) sont configurés pour être montés sur le casque (116) afin de positionner la lentille (118) à une pluralité de distances du visage de l'utilisateur.
     
    13. Visière montée sur un casque de l'une des revendications précédentes, comprenant en outre :
    une bride (152) montée sur le dessus de la lentille (118) et s'étendant vers les bras de montage (120).
     




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    Cited references

    REFERENCES CITED IN THE DESCRIPTION



    This list of references cited by the applicant is for the reader's convenience only. It does not form part of the European patent document. Even though great care has been taken in compiling the references, errors or omissions cannot be excluded and the EPO disclaims all liability in this regard.

    Patent documents cited in the description