Protective headgear and methods for making same
A protective headgear can include a core and two or more impact absorbing layers coupled to the core. At least one impact absorbing layer can include a number of impact absorbing components that are configured to absorb and reduce the force of impact incident on the protective headgear. The impact absorbing materials can employ cylindrical segments of viscoelastic foam with a sealed central void to absorb high energy impacts. The protective helmet can reduce the occurrence of concussions and subconcussive impacts to the brain.
1. A protective headgear comprising:
a rigid core; and
a plurality of impact absorbing layers disposed on the rigid core and configured to absorb impact incident on the protective headgear; said plurality of impact absorbing layers comprising an inner layer and an outer layer disposed directly on opposed sides of said rigid core;
wherein at least one of said impact absorbing layers comprises a plurality of impact absorbing components;
wherein the impact absorbing components comprise conical elements each having an internal cylindrical void;
wherein at least one of said impact absorbing components further comprises a barrier fixed to a distal end thereof such that said at least one of said impact absorbing components is fixed to the rigid core at a proximal end thereof and fixed to said barrier at said distal end; and
wherein the barrier is configured to prevent the passage of air.
2. The protective headgear of claim 1 , wherein the internal cylindrical void in each impact absorbing component has an axis that is oriented along an axis of the impact absorbing component.
3. The protective headgear of claim 2 , wherein the rigid core comprises at least one of a layer of carbon fiber reinforced polymer and a layer of reinforced polymer, the layer of polymer having a hardness in a range approximately 28 Shore D to approximately 68 Shore D.
4. The protective headgear of claim 3 , wherein the layer of carbon fiber reinforced polymer comprises a plurality of carbon filaments combined with a resin and a rubberizing compound.
5. The protective headgear of claim 1 , wherein the inner layer of the plurality of impact absorbing layers comprises an inner layer configured to contact a head of a wearer of the protective headgear, the inner layer being configured to conform to the head of the wearer and reduce any gaps between the inner layer and the head of the wearer.
6. The protective headgear of claim 1 , wherein the plurality of impact absorbing layers comprises a liner removably and replaceably coupled to an interior of the protective headgear.
7. The protective headgear of claim 6 , wherein the liner comprises at least one of a material providing a wicking effect, a material providing an anti-bacterial effect, a material providing an anti-microbial effect, and a material configured to function as a moisture barrier.
8. The protective headgear of claim 1 , wherein the plurality of impact absorbing components comprises at least one of fluid-filled bladders, gas-filled bladders, liquid filled bladders, semifluid-filled bladders, semisolid bladders, vinyl encased impact absorbing members, and mechanical shock absorbing components.
9. The protective headgear of claim 1 , wherein the plurality of impact absorbing components comprise one or more layers of foam.
10. The protective headgear of claim 1 , wherein the plurality of impact absorbing components further comprise one or more cylindrical elements each having an internal cylindrical void.
11. The protective headgear of claim 1 , further comprising at least one of: a forehead pad configured to be disposed at a portion of the protective headgear where a forehead of a wearer of the protective headgear is expected to abut the protective headgear, one or more elongate strips configured to be disposed at a portion of the protective headgear where a side of the wearer's head is expected to abut the protective headgear, and one or more ear strips configured to be disposed at a portion of the protective headgear where an ear of the wearer is expected to abut the protective headgear.
12. The protective headgear of claim 1 , further comprising at least one abrasion resistance layer.
13. The protective headgear of claim 1 , further comprising an acoustic element configured to reduce one or more predetermined sound frequencies.
14. The protective headgear of claim 1 , further comprising one or more sensors coupled to at least one area on the protective headgear.
15. The protective headgear of claim 1 , further comprising a removable face mask.
16. The protective headgear of claim 1 , wherein the rigid core comprises a layer of carbon fiber and a layer of poly-para-phenylene terephthalamide.