Insole
First Claim
1. An insole comprising an uppermost layer of abrasion-resistant material and a lower layer of shock absorbing compressible elastomeric material, said lower layer including a wedge-shaped pad under the heel, a thickened pad under the metatarsal region, a portion of uniform thickness between said wedge-shaped heel pad and said metatarsal pad and a region of uniform thickness from the metatarsal region forward.
1 Assignment
0 Petitions
Accused Products
Abstract
An insole includes an abrasion-resistant fabric top covering adhered to a layer of molded modified dense polyurethane contoured to provide maximum shock absorption under those areas of the foot most subject to impact loading and a minimum thickness of polyurethane under the remaining portions of the foot. In addition, a series of grooves extending primarily parallel to the axis of the foot are formed in the lowermost surface of the shock absorbing polyurethane. These grooves provide volume into which the polyurethane may deform during impact, thereby enhancing the shock absorbing qualities of the material.
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Citations
17 Claims
- 1. An insole comprising an uppermost layer of abrasion-resistant material and a lower layer of shock absorbing compressible elastomeric material, said lower layer including a wedge-shaped pad under the heel, a thickened pad under the metatarsal region, a portion of uniform thickness between said wedge-shaped heel pad and said metatarsal pad and a region of uniform thickness from the metatarsal region forward.
- 10. An insole comprising an uppermost layer of abrasion-resistant material and a lower layer of shock absorbing compressible elastomeric material, said lower layer having integral thickened pads respectively under the heel and the metatarsal region, and a relatively smaller uniform thickness under the remainder of the foot.
Specification