PROTECTIVE WEAR HAVING DISCRETE REINFORCING ELEMENTS FOR IMPROVED MOBILITY
A pad is disclosed including discrete reinforcing members secured to a base layer. The discrete reinforcing elements may include spherical members rotatably embedded in the base layer, plates pivotally mounted to the base layer by means of a flexible post or revolute joint, or plates threaded on a chord secured to the base layer. The base layer may include a plurality of discrete projections each having a reinforcing element secured proximate a distal end thereof. A pad may include a receiver for securing to a wearer and a base. The base may be secured to the receiver by a suspension allowing pitch and roll movements. The receiver may secure to the base at one end while the opposite end is slidably secured to the base or coupled to the base by means of a biasing member.
This application claims the benefit of U.S. Provisional Application Ser. No. 60/911,351, filed Apr. 12, 2007.
BACKGROUND OF THE INVENTION1. The Field of the Invention
The present invention relates to protective clothing and, more particularly, to reinforcing members for use in protective clothing.
2. The Relevant Technology
Injuries in low speed bicycle and motorcycle accidents tend to result from tumbling and bouncing of the operator after an initial impact. Tumbling and bouncing tend to occur due to high frictional forces between the ground and the operator. These high frictional forces generate a rotational moment acting on the body of the operator, resulting in tumbling of the operator. Tumbling is typically responsible for multiple injuries from impact with the ground and other objects.
Some protective wear reduce friction between the operator and the ground through the use of hard, low-wear materials. However, such materials produce very stiff protective gear which has not been readily accepted by users. In view of the foregoing it would be an advancement in the art to provide protective clothing that reduces friction between the ground and an operator during an accident while maintaining adequate mobility.
BRIEF SUMMARY OF THE INVENTIONIn one aspect of the invention, a wearable item includes a flexible backing layer adapted to secure to a portion of a wearer's body. A base is secured to the backing layer. Discrete reinforcing elements are secured to the base and have a low-friction upper surface comprising a material substantially harder than the base.
In another aspect of the invention, the base includes discrete projections having the discrete reinforcing elements secured to distal ends of the projections. A web extends among the plurality of discrete projections.
In another aspect of the invention, the discrete reinforcing elements pivotally secure to the base, such as by means of a flexible post or a revolute joint.
In another aspect of the invention, the discrete reinforcing elements are spherical and are embedded within spherical apertures within the base.
In another aspect of the invention, the discrete reinforcing elements secure to a chord anchored to the base. The chord may be formed of flexible material and the discrete reinforcing elements may secure to one another, such as by means of a revolute joint.
In another aspect of the invention a protective pad includes a receiving member shaped to receive a portion of a wearer's body and a base adapted to selectively rest on a support surface. A suspension resiliently couples the receiving member to the base. A rocker is interposed between the receiving member and base. The suspension permits pitch and roll motion of the receiving member relative to the base.
In another aspect of the invention a receiver formed of a compliant material is secured to a rigid base. One end of the receiver is secured to the base and the other is free to move relative to the base. In some embodiments the free end is slidably mounted to the base. In other embodiments, a biasing member extends between the free end and the base.
To further clarify the above and other advantages and features of the present invention, a more particular description of the invention will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings. It is appreciated that these drawings depict only typical embodiments of the invention and are therefore not to be considered limiting of its scope. The invention will be described and explained with additional specificity and detail through the use of the accompanying drawings in which:
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Discrete reinforcing elements 16 secure to the carrier layer 14 and are preferably substantially harder than the carrier layer 14 and the base layer 12. For example, the carrier layer 14 or base layer 12 may have a hardness of less than 45 Shore D, preferably less than 65 Shore A, whereas the discrete reinforcing elements 16 have a hardness of greater than 85 Shore D or 100 Rockwell R. In some embodiments, the discrete reinforcing elements 16 have a hardness of greater than 130 Rockwell R, such as embodiments formed of acrylic or other polymer with a like hardness. In other embodiments, the discrete reinforcing elements 16 are made of ceramic or metal.
The discrete reinforcing elements 16 may occupy less than the entire outer surface area of the carrier layer 14. In some embodiments, the discrete reinforcing elements occupy less than 95 percent of the outer surface area of the carrier layer 14. In other embodiments, the discrete reinforcing elements 16 occupy less than 50 percent of the outer surface area of the carrier layer. In still other embodiments, the discrete reinforcing elements occupy between five and twenty-five percent of the outer surface area of the carrier layer 14.
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In some embodiments, the discrete portions 24 are secured to one another by a filament web prior to adherence to protective gear in order to facilitate handling of the discrete portions 24. The discrete portions 24 may be secured to an item of protective gear or a base layer 12 by means of a pressure sensitive adhesive, threads, or other fastening means.
The discrete portions 24 may be shaped to enable a plurality of the discrete portions 24 to cover a contoured surface. In the illustrated embodiments, the discrete portions 24 are hexagonal. However triangular, square, and other polygonal shapes may be used. A plurality of portions 24 having differing shapes may be used to cover an area.
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The radius of curvature of the reinforcing elements 16 may be between 60 and 140 percent of the width of the reinforcing element may be elongate such that the length of the elements 16 along the direction of elongation is between 1.5 and four times the width of the elements 16 perpendicular to the direction of elongation.
Portions of the carrier layer 14 remain exposed between the reinforcing elements 16 in the embodiment of
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The suspension 54 may be embodied as arms 58 extending between the base 52 and the receiver 50. The arms 58 are formed of a resilient material such that the arms flex in response to forces applied to the receiver 50 and base 52. The arms 58 may be disposed parallel to one another such that flexing of both arms in the same direction results in a rolling motion 60 whereas flexing of the arms in opposite direction changes the pitch 62 of the receiver 50 relative to the base 52.
In the illustrated embodiment, the arms 58 secure to a contact pad 64 mounted to the base 52. One end of each of the arms 58 is secured at the same side of the contact pad 64. The arms 58 extend along opposite sides of the contact pad 64 and secure to the receiver 50.
The rocker 56 secures to the receiver above the contact pad 64 and contacts the contact pad 64 when the suspension 54 is compressed by a wearer. In the illustrated embodiment, the rocker 56 has a cylindrical lower surface, promoting line contact between the rocker 56 and the contact pad 64; however, the rocker 56 may have a spherical lower surface in other embodiments such that a substantial point contact occurs. The rocker 56 in the illustrated embodiment is oriented such that it is parallel to a wearer's leg positioned within the receiver. The rocker therefore facilitates rolling of the wearer's leg in direction 60 relative to the base when the rocker is pressed against the contact pad under the wearer's weight.
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The receiver 70 is fixedly mounted at a rearward end 74 to the base 72 and is slidably mounted to the base 72 at forward end 76, such as by means of a key 78 mounted to either the base 72 or the receiver 70 and a keyway 80 mounted to the other of the base 72 and receiver 70. Other sliding fastening systems may also be used.
Slidable securement of the receiver 70 to the base 72 facilitates deformation of the receiver in response to the wearer's movements. The receiver 70 is preferably formed of a flexible material that changes shape in response to the wearer's movements. As shown in
The base 72 may include rollers 88 rotatably secured to a lower surface thereof to enable the wearer to move readily across a support surface. In an alternative embodiment, the lower surface of the base 72 bears a low friction material to facilitate sliding.
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The plates 94 may include a spherical projection 102 insertable within a corresponding cavity 104 in an adjacent plate 94. Spherical projection 102 and cavity 104 form a revolute joint enabling the plates 94 to pivot with respect to one another, facilitating movement of the wearer. The chord 98 also retains the plates with respect to the carrier layer 14, while still permitting movement due to its elasticity.
In some embodiments, the plates 94 interlock with one another, such as by means of projections 106 extending from one or more of the edges of the plates 94. As is apparent in
The various embodiments disclosed herein may be incorporated into various types of protective wear. The discrete reinforcing elements 16 and carrier layer 14 may form part of glove 108, as shown in
The present invention may be embodied in other specific forms without departing from its spirit or essential characteristics. The described embodiments are to be considered in all respects only as illustrative and not restrictive. The scope of the invention is, therefore, indicated by the appended claims rather than by the foregoing description. All changes which come within the meaning and range of equivalency of the claims are to be embraced within their scope.
Claims
1. A wearable item, comprising:
- a flexible backing layer adapted to secure to a portion of a wearer's body; and
- a plurality of discrete reinforcing elements flexibly secured to the base and having a low-friction upper surface comprising a material substantially harder than the backing layer.
2. The wearable item of claim 1, further comprising a carrier layer securing the plurality of discrete reinforcing elements to the flexible backing layer; and wherein the carrier layer comprises a plurality of discrete projections each having a proximal end adjacent the flexible backing layer and a distal end distanced from the flexible backing layer, each of the plurality of discrete reinforcing elements securing proximate the distal end of one of the plurality of discrete projections.
3. The wearable item of claim 2, further comprising a web extending among the plurality of discrete projections proximate the distal ends thereof and hindering movement of the plurality of discrete projections relative to one another.
4. The wearable item of claim 1, wherein the discrete reinforcing elements have a rounded upper surface.
5. The wearable item of claim 4, wherein the discrete reinforcing elements are spherical.
6. The wearable item of claim 5, further comprising a carrier layer securing the plurality of discrete reinforcing elements to the flexible backing layer; and wherein the discrete reinforcing elements are rotatably embedded in the carrier layer.
7. The wearable item of claim 1, wherein the discrete reinforcing elements comprise plates pivotally mounted to the flexible backing layer.
8. The wearable item of claim 7, wherein each of the plates is pivotally mounted to the flexible backing layer by means of a post formed of a resilient material and secured to both the plate and base.
9. The wearable item of claim 7, wherein each of the plates is pivotally mounted to the flexible backing layer by means of a ball joint.
10. The wearable item of claim 7, wherein each of the plates has a rounded upper surface.
11. The wearable item of claim 1, further comprising a carrier layer securing the plurality of discrete reinforcing elements to the flexible backing layer; and wherein the carrier layer comprises a plurality of discrete areas, each bearing multiple of the plurality of discrete reinforcing elements.
12. The wearable item of claim 11, wherein the discrete areas have perimeters shaped to conform to one another.
13. The wearable item of claim 11, wherein the discrete areas are shaped to interlock with one another.
14. The wearable item of claim 11, wherein the discrete areas are hexagonal.
15. The wearable item of claim 1, further comprising a carrier layer securing the plurality of discrete reinforcing elements to the flexible backing layer; and wherein the carrier layer comprises a gel material.
16. The wearable item of claim 1, further comprising a chord secured to the flexible backing layer at least two points distanced from one another, at least a portion of the discrete reinforcing elements being secured to the chord.
17. The wearable item of claim 16, wherein the chord includes an elastic material.
18. The wearable item of claim 16, wherein each discrete reinforcing element secures to an adjacent discrete reinforcing element by means of a revolute joint.
19. The wearable item of claim 1, wherein the flexible backing layer is incorporated into a jacket.
20. The wearable item of claim 1, wherein the flexible backing layer is incorporated into at least one of a knee pad, elbow pad, shoulder pad, wrist pad, glove, jacket, and pants.
21. A protective pad comprising:
- a receiving member shaped to receive a portion of a wearer's body;
- a base adapted to selectively rest on a support surface, the base being substantially more rigid than the receiving member; and
- a suspension resiliently coupling the receiving member to the base.
22. The protective pad of claim 21, further comprising a rocker interposed between the receiving member and base.
23. The protective pad of claim 22, further comprising a contact pad secured to the base, the suspension and rocker being secured to the contact pad.
24. The protective pad of claim 21, wherein the suspension permits pitch and roll motion of the receiving member relative to the base.
25. The protective pad of claim 24, wherein the suspension comprises two arms each having one end secured to the receiving member and another end secured to the base.
26. The protective pad of claim 25, wherein the arms are parallel to one another.
27. The protective pad of claim 26, wherein the arms secure to a contact pad secured to one of the receiving member and base.
28. The protective pad of claim 26, wherein the arms extend along opposite sides of the contact pad.
29. The protective pad of claim 26, wherein the arms secure to a first side of the contact pad and secure to one of the receiving member and base proximate a second side of the contact pad opposite the first side.
30. The protective pad of claim 21, wherein the receiving member is adapted to secure to the wearer's knee.
31. A protective pad of claim 21, wherein the receiving member has a first end and a second end, the receiving member being secured to the base proximate the first end and the suspension securing the second end to the base such that the second end is free to move relative to the base subject to a biasing force of the suspension.
32. The protective pad of claim 31, wherein the receiving member pivotally secures to the base proximate the first end.
33. The protective pad of claim 32, wherein the suspension comprises a biasing member extending between the receiver and the base proximate the second end.
34. The protective pad of claim 31, wherein the receiving member slidably secures to the receiver proximate the second end.
35. The protective pad of claim 34, wherein a middle portion of the receiver between the first and second ends is distanced from the base when undeformed by the wearer's weight.
36. The protective pad of claim 35, wherein the first end is mounted to the base by means of a key secured to one of the base and receiver and a keyway secured to the other of the base and receiver.
37. The protective pad of claim 36, further comprising a leaf spring coupling the second end to the base.
38. The protective pad of claim 31, further comprising rollers rotatably mounted to a lower surface of the base.
39. The protective pad of claim 21, wherein the suspension is integral to one of one of the receiver and the base.
40. The protective pad of claim 39, wherein the suspension is monolithically formed with one of the receiver and the base.
Type: Application
Filed: Mar 5, 2008
Publication Date: Nov 20, 2008
Inventor: Zine-Eddine Boutaghou (North Oaks, MN)
Application Number: 12/043,093
International Classification: A41D 13/08 (20060101); A41D 13/06 (20060101); A41D 19/00 (20060101); A41D 3/02 (20060101); A41D 1/06 (20060101); A41D 27/26 (20060101);