Shear reduction mechanism
Protective gear such as a helmet includes multiple layers including an outer ball bearing layer and/or one or more energy and impact transformer layers. The ball bearing layer exposes multiple ball bearings on the outer surface of the protective gear to deflect and diminish shear forces and other rotational forces imparted onto the outer surface. In many examples, the ball bearings on the outer surface prevent the transfer of shear and rotational forces from the surface of a helmet onto a skull. The energy and impact transformer layers may also include various structures and materials used to dissipate mechanical energy applied to an outer layer or outer shell layer.
1. A helmet, comprising:
an outer shell layer configured to expose a plurality of ball bearings, wherein the plurality of ball bearings deflect shear forces directed onto the outer shell layer of the helmet, wherein the plurality of ball bearings are a plurality of individually housed ball bearings each residing on a bed of smaller ball bearings;
an energy and impact transformer layer connected to the plurality of ball bearings, wherein the energy and impact transformer layer is configured to absorb compressive forces directed onto the outer shell layer of the helmet.
2. The helmet of claim 1 , wherein the outer shell layer is connected to the energy and impact transformer layer though a middle shell layer.
3. The helmet of claim 1 , wherein the plurality of ball bearings are maintained in a ball bearing layer.
4. The helmet of claim 3 , wherein the ball bearing layer resides between the outer shell layer and a middle shell layer.
5. The helmet of claim 3 , wherein the ball bearing layer resides between the outer shell layer and the energy and impact transformer layer.
6. The helmet of claim 1 , wherein the energy and impact transformer layer is also a liner layer.
7. The helmet of claim 1 , wherein the energy and impact transformer layer is connected to an inner shell layer.
8. The helmet of claim 6 , wherein a lining layer is connected to the inner surface of the inner shell layer.
9. The helmet of claim 8 , wherein the lining layer comprises pre-formed foam.
10. The helmet of claim 1 , wherein the energy and impact transformer layer comprises a magneto-rheological element.
11. The helmet of claim 1 , wherein the energy and impact transformer layer comprises a gel or fluid.
12. Protective gear, comprising:
an outer shell layer configured to expose a plurality of ball bearings, wherein the plurality of ball bearings deflect shear forces directed onto the outer shell layer of the protective gear,
wherein the plurality of ball bearings are a plurality of individually housed ball bearings each residing on a bed of smaller ball bearings;
an energy and impact transformer layer connected to the plurality of ball bearings, wherein the energy and impact transformer layer is configured to absorb compressive forces directed onto the outer shell layer of the protective gear.
13. The protective gear of claim 12 , wherein the plurality of ball bearings are maintained in a ball bearing layer.
14. The protective gear of claim 13 , wherein the ball bearing layer resides between the outer shell layer and the energy and impact transformer layer.
15. The protective gear of claim 12 , wherein the energy and impact transformer layer is also a liner layer.
16. The protective gear of claim 12 , wherein the energy and impact transformer layer is connected to an inner shell layer.