Impact diverting mechanism
An impact diverting mechanism having a top layer and a bottom layer is provided. The two layers are connected such that the top layer is configured to move in relation to the bottom layer when impacted, and therefore is able to divert impact and reduce rotational and linear acceleration on the bottom layer. The impact diverting mechanism may be attached to, or configured to attach to, an object in need of protection, such as a helmet.
1. An impact diverting mechanism couplable to protective equipment, comprising:
a bottom layer couplable to a portion of an interior surface of the protective equipment; and
a top layer, disposed adjacent to and mechanically connected around a perimeter of the bottom layer, the top layer having an impact surface disposed distal to the bottom layer, wherein the top layer and the bottom layer are able to move relative to each other, and wherein the impact surface is either planar or non-planar;
wherein the top layer and the bottom layer are configured such that during an oblique impact force acting at an impact point on the impact surface of the top layer, the top layer shifts relative to the bottom layer and the interior surface of the protective equipment;
wherein the bottom layer is couplable to a portion of the interior surface of the protective equipment;
wherein the top layer and the bottom layer are flexible such that the impact diverting mechanism conforms to the interior surface of the protective equipment upon coupling;
wherein the oblique impact force is a vector having a parallel component projected on a plane at the impact point on the impact surface;
wherein the plane is either tangential to a non-planar impact surface or coincident with a planar impact surface; and
wherein the shift of the top layer relative to the bottom layer diverts and dissipates kinetic energy resulting from the parallel component of the vector of the oblique impact force, thereby reducing rotational acceleration and linear acceleration of the protective equipment.
2. The impact diverting mechanism of claim 1 , wherein there is lubrication between the top layer and the bottom layer selected from the group consisting of self-lubrication on the top layer, self-lubrication on the bottom layer, an independent lubricant between the top layer and the bottom layer, and combinations thereof.
3. The impact diverting mechanism of claim 1 , wherein the bottom layer and the top layer are configured such that the top layer shifts substantially laterally relative to the bottom layer as a result of the oblique impact force acting on the top layer.
4. The impact diverting mechanism of claim 1 , wherein the top layer and the bottom layer are made of elastic or inelastic materials.
5. The impact diverting mechanism of claim 4 , wherein the elastic or inelastic materials are selected from the group consisting of thermosetting plastics, conventional thermoplastics, and thermoset elastomers.
6. The impact diverting mechanism of claim 1 , wherein the top layer is made of plasticized foam.
7. The impact diverting mechanism of claim 1 , wherein multiple impact diverting mechanisms are coupled to a single protective equipment.
8. The impact diverting mechanism of claim 1 , wherein both the top layer and the bottom layer comprise composite or laminate materials.
9. The impact diverting mechanism of claim 1 , wherein at least one of the top layer and the bottom layer is reinforced.
10. The impact diverting mechanism of claim 1 , wherein at least one of the top layer and the bottom layer includes a shock absorbing material.
11. The impact diverting mechanism of claim 10 , wherein the shock absorbing material is a dilatant.
12. The impact diverting mechanism of claim 1 , wherein one or more additional layers are added on the top layer, including one or more lubricated layers and reinforced layers free to move relative to each other.
13. The impact diverting mechanism of claim 1 , wherein the outer surface of the top layer has a surface selected from the group consisting of smooth, flat, and a texture for a better mechanical grip during the oblique impact force.
14. The impact diverting mechanism of claim 1 , wherein the bottom layer is further couplable to the interior surface of the protective equipment using co-molding, mechanical means, a peel-and-stick material, or any other method of attachment.
15. The impact diverting mechanism of claim 14 , wherein the impact diverting mechanism is couplable at one or more locations on the interior surface of the protective equipment.
16. The impact diverting mechanism of claim 1 , wherein the protective equipment is configured to be worn on a part of a user's body selected from the group consisting of the head, neck, shoulders, upper arms, elbows, forearms, wrists, hands, chest, back, spine, hips, thighs, knees, shins, ankles, and feet.
17. The impact diverting mechanism of claim 1 , wherein the protective equipment is a helmet.
18. The impact diverting mechanism of claim 1 , wherein the protective equipment is wearable apparel.
19. The impact diverting mechanism of claim 1 , wherein the top layer and the bottom layer further comprise an advertisement, a logo, a trademark, a certification label, a warning label, or a serial number.
20. The impact diverting mechanism of claim 7 , wherein the multiple impact diverting mechanisms are coupled to each other.