SOLE FOR A SHOE, IN PARTICULAR FOR A RUNNING SHOE
First Claim
1. Sole for a shoe, in particular for a running shoe, the sole comprising a polyurethane injected midsole, a longitudinally extending shank and an outsole, said shank extending from a forefoot of the sole through an arch area to a heel area and having an opening in its heel area for receiving polyurethane wherein the shank (4) in the heel area (25) is offset to be closer to the outsole (3) than the shank in the arch area, and the sole further comprising a comfort element (9) having a higher elasticity than the polyurethane of the midsole wherein the comfort element is placed in a cavity (17) above said opening (8) of the shank, and is bonded to the polyurethane of the midsole (1).
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Accused Products
Abstract
A sole for a shoe, in particular for a running shoe which sole comprises a polyurethane injected midsole, a longitudinally extending shank and an outsole. The shank extends from the forefoot of the sole through an arch area to a heel area and has an opening in its heel area for receiving polyurethane during injection of the polyurethane for the midsole. Further, the shank has a cavity (17) for receiving a comfort element (9). The heel area of the shank is offset to be closer to the outsole (3) than the shank in the arch area. The invention solves the problem of designing a sole having a low weight but still providing comfort to the wearer of the shoe. By placing a comfort element in the cavity (17) in the heel area of the shank, which comfort element has a higher elasticity than the polyurethane of the midsole, an overall solution with improved energy absorption and energy return is provided.
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Citations
10 Claims
- 1. Sole for a shoe, in particular for a running shoe, the sole comprising a polyurethane injected midsole, a longitudinally extending shank and an outsole, said shank extending from a forefoot of the sole through an arch area to a heel area and having an opening in its heel area for receiving polyurethane wherein the shank (4) in the heel area (25) is offset to be closer to the outsole (3) than the shank in the arch area, and the sole further comprising a comfort element (9) having a higher elasticity than the polyurethane of the midsole wherein the comfort element is placed in a cavity (17) above said opening (8) of the shank, and is bonded to the polyurethane of the midsole (1).
Specification