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 extending continuously from a heel area to a forefoot area;
a longitudinally extending shank, the shank having a lower surface; and
an outsole having an outer surface;
said shank extending from the forefoot of the sole through an arch area to the heel area and having an opening in its heel area for receiving polyurethane of the midsole;
wherein the lower surface of the shank in the heel area is offset to be closer to the outer surface of the outsole in a vertical direction than the lower surface of the shank in the arch area; and
the sole further comprising a comfort element having a higher elasticity than the polyurethane of the midsole;
wherein the comfort element is placed in a cavity above said opening of the shank, and is bonded to the polyurethane of the midsole.
1 Assignment
0 Petitions
Accused Products
Abstract
A sole for a shoe, in particular for a running shoe, the sole having 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 for receiving a comfort element. The heel area of the shank is offset to be closer to the outsole than the shank in the arch area. The sole provides a low weight sole while still providing comfort to the wearer of the shoe. By placing a comfort element in the cavity, in the heel area of the shank, which comfort element has a higher elasticity than the polyurethane of the midsole, the sole provides improved energy absorption and energy return.
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Citations
15 Claims
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1. Sole for a shoe, in particular for a running shoe, the sole comprising:
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a polyurethane injected midsole extending continuously from a heel area to a forefoot area; a longitudinally extending shank, the shank having a lower surface; and an outsole having an outer surface; said shank extending from the forefoot of the sole through an arch area to the heel area and having an opening in its heel area for receiving polyurethane of the midsole; wherein the lower surface of the shank in the heel area is offset to be closer to the outer surface of the outsole in a vertical direction than the lower surface of the shank in the arch area; and the sole further comprising a comfort element having a higher elasticity than the polyurethane of the midsole; wherein the comfort element is placed in a cavity above said opening of the shank, and is bonded to the polyurethane of the midsole. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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Specification