Dynamically moderated shock attenuation system for apparel
View Patent ↗Various embodiments of this invention disclose a dynamically responsive shock attenuation system for apparel intended to protect boney areas of the body where skeletal structures are close to the surface and soft tissue layers are thin, that comprises two or more materials with different, narrowly prescribed physical properties which, when used together, produce a dynamic, continuous, and proportional response over a wide range of impact forces. In various embodiments of the invention, the two materials comprise a first material that exhibits generally Newtonian behavior to impact forces and a second material that exhibits generally non-Newtonian behavior to impact forces.
1. A shock attenuation system for apparel, comprising:
a multi-layered system comprising a first layer and a second layer;
said first layer comprising a moderating material that generally exhibits non-Newtonian behavior in response to impact force, said first layer being generally contoured to a body part of a wearer; and
said second layer comprising a cushioning material that generally exhibits Newtonian behavior in response to impact force.
2. A shock attenuation system for apparel according to claim 1 , wherein said moderating material is selected from a group consisting of: plastic materials, Bingham plastic materials, yield pseudo-plastic materials, yield dilatant materials, polyborosiloxanes, “shear thinning” materials, “shear thickening” materials, Maxwell materials, Oldroyd-B materials, Kelvin materials, Anelastic materials, Rheopectic materials, thixotropic materials, and combinations thereof.
3. A shock attenuation system for apparel according to claim 1 , wherein said cushioning material is selected from a group consisting of: gas filled bladders, Ethylene-Vinyl Acetate, Polyurethane, foam materials, gel or gel-like materials, structural point-elastic cushioning systems, polymer based cushioning materials, and combinations thereof.
4. A shock attenuation system for apparel, comprising:
a multi-layered system comprising a first layer and a second layer;
said first layer comprising a moderating material that generally exhibits non-Newtonian behavior in response to an impact force;
said second layer comprising a cushioning material that generally exhibits Newtonian behavior in response to the impact force; and
an encapsulating envelope surrounding said second layer, said encapsulating envelope limiting lateral expansion of said second layer in response to impact force.
5. A shock attenuation system for apparel according to claim 4 , wherein said encapsulating envelope is selected from a group consisting of: encapsulating film envelopes, plastic film envelopes, polyurethane film envelopes, polymer-based envelopes, fabric envelopes, elastomeric coatings or films, and combinations thereof.
6. A shock attenuation system for apparel, comprising:
a first cushioning region and a separate second cushioning region;
said first cushioning region and said second cushioning region each comprising a multi-layered system with a first layer and a second layer;
said first layer of said first region comprising a first moderating material that generally exhibits non-Newtonian behavior in response to impact force;
said second layer of said first region comprising a first cushioning material that generally exhibits Newtonian behavior in response to impact force;
said first layer of said second region comprising a second moderating material that generally exhibits non-Newtonian behavior in response to impact force; and
said second layer of said second region comprising a second cushioning material that generally exhibits Newtonian behavior in response to impact force.
7. A shock attenuation system for apparel according to claim 6 , wherein said first and second moderating materials are selected from a group consisting of: plastic materials, Bingham plastic materials, yield pseudo-plastic materials, yield dilatant materials, polyborosiloxanes, “shear thinning” materials, “shear thickening” materials, Maxwell materials, Oldroyd-B materials, Kelvin materials, Anelastic materials, Rheopectic materials, thixotropic materials, and combinations thereof.
8. A shock attenuation system for apparel according to claim 6 , wherein said first and second cushioning materials are selected from a group consisting of: gas filled bladders, Ethylene-Vinyl Acetate, Polyurethane, foam materials, gel or gel-like materials, structural point-elastic cushioning systems, polymer based cushioning materials, and combinations thereof.
9. A shock attenuation system for apparel according to claim 6 , wherein said shock attenuating system for apparel further comprises an encapsulating envelope surrounding said second layer, said encapsulating envelope limiting expansion of said second layer in response to the impact force and said encapsulating envelope being selected from a group consisting of: encapsulating film envelopes, plastic film envelopes, polyurethane film envelopes, polymer-based envelopes, woven fabric envelopes, elastomeric coating, films, and combinations thereof.
10. A shock attenuation system for apparel according to claim 1 , wherein said shock attenuation system for apparel comprises a plurality of shock attenuation units, said shock attenuation units each composed of said multi-layered system comprising a first layer and a second layer.
11. A shock attenuation system for apparel according to claim 10 , wherein the number of said first layers comprising moderating materials that generally exhibit non-Newtonian behavior in response to impact forces and the number of said second layers comprising cushioning materials that generally exhibit Newtonian behavior in response to impact forces are related by a ratio of one-to-one.
12. A shock attenuation system for apparel according to claim 1 , wherein said shock attenuation system for apparel is integrally connected to the apparel.
13. A shock attenuation system for apparel according to claim 1 , wherein said shock attenuation system for apparel is removably connected to the apparel.
14. A shock attenuation system for apparel according to claim 1 , wherein said shock attenuation system for apparel comprises a stand-alone article of apparel.
15. A shock attenuation system for apparel according to claim 4 , wherein said shock attenuation system for apparel is integrally connected to the apparel.
16. A shock attenuation system for apparel according to claim 4 , wherein said shock attenuation system for apparel is removably connected to the apparel.
17. A shock attenuation system for apparel according to claim 4 , wherein said shock attenuation system for apparel comprises a stand-alone article of apparel.
18. A shock attenuation system for apparel according to claim 6 , wherein said shock attenuation system for apparel is integrally connected to the apparel.
19. A shock attenuation system for apparel according to claim 6 , wherein said shock attenuation system for apparel is removably connected to the apparel.
20. A shock attenuation system for apparel according to claim 6 , wherein said shock attenuation system for apparel comprises a stand-alone article of apparel.
21. A shock attenuation system for apparel according to claim 1 , wherein said shock attenuation system for apparel comprises a type of apparel selected from a group consisting of: shirts, undershirts, pants, underpants, hats, helmets, face guards, shin-guards, athletic supporters, groin protectors, gloves, hand pads, head guards, mittens, jerseys, shorts, deflectors, chest guards, throat protectors, spine protectors, knee-guards, boots, footwear, ankle protectors, shin guards, kidney belts, martial arts pads, leg pads, Thai pads, sparring pads, boxing gloves, boxing coaching pads, handlebar pads, hook and jab pads, football girders, rib pads, forearm pads, elbow guards, shoulder braces, harness pads, race guards, bicycle or motorcycle seats, chest protectors, back packs, hip pads, shoulder straps, wrist stabilizers, and wrist pads.
22. A shock attenuation system for apparel according to claim 4 , wherein said shock attenuation system for apparel comprises a type of apparel selected from a group consisting of: shirts, undershirts, pants, underpants, hats, helmets, face guards, shin-guards, athletic supporters, groin protectors, gloves, hand pads, head guards, mittens, jerseys, shorts, deflectors, chest guards, throat protectors, spine protectors, knee-guards, boots, footwear, ankle protectors, shin guards, kidney belts, martial arts pads, leg pads, Thai pads, sparring pads, boxing gloves, boxing coaching pads, handlebar pads, hook and jab pads, football girders, rib pads, forearm pads, elbow guards, shoulder braces, harness pads, race guards, bicycle or motorcycle seats, chest protectors, back packs, hip pads, shoulder straps, wrist stabilizers, and wrist pads.
23. A shock attenuation system for apparel according to claim 6 , wherein said shock attenuation system for apparel comprises a type of apparel selected from a group consisting of: shirts, undershirts, pants, underpants, hats, helmets, face guards, shin-guards, athletic supporters, groin protectors, gloves, hand pads, head guards, mittens, jerseys, shorts, deflectors, chest guards, throat protectors, spine protectors, knee-guards, boots, footwear, ankle protectors, shin guards, kidney belts, martial arts pads, leg pads, Thai pads, sparring pads, boxing gloves, boxing coaching pads, handlebar pads, hook and jab pads, football girders, rib pads, forearm pads, elbow guards, shoulder braces, harness pads, race guards, bicycle or motorcycle seats, chest protectors, back packs, hip pads, shoulder straps, wrist stabilizers, and wrist pads.
24. A shock attenuation system for apparel according to claim 1 , wherein the first layer is disposed above the second layer.
25. A shock attenuation system for apparel according to claim 6 , wherein the first layers of the first and second cushioning regions are disposed over the second layers of the first and second cushioning regions.
26. A shock attenuation system for apparel according to claim 6 , wherein the first moderating material is a shear thickening material and the second moderating material is a thixotropic material.