Shock-absorbing cushion
First Claim
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1. A shock absorbing cushion comprising:
- a cushion having two superimposed synthetic plastic sheets having surfaces being peripherally continuous at their edges and defining an interior space filled with a fluid;
a first group of recesses formed in one of said sheets, each recess being defined by walls extending from the one said sheet in an inward direction towards the other of said sheets and extending to and being sealed with the other of said sheets at the surface of said other sheet so that said other sheet surface is substantially smooth and said one sheet surface has recesses in its surface;
the walls of the recesses of said first group subdividing the interior space into separate compartments and said walls including portions which are spaced from said other sheet to provide fluid passages between the compartments; and
a second group of recesses located within the compartments defined by the first group of recesses, the second group of recesses also being defined by walls and the walls of the second group providing further support function for the shock absorbing cushion.
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Abstract
Shock absorbing cushion structures are disclosed which are formed by upper and lower sheets peripherally sealed and formed to define a series of intercommunicating air chambers therebetween. In particular there is disclosed a shock absorbing shoe insole of this kind in which a flowable substance such as a medicinal or deodorant power is contained in the air chambers. The upper sheet is provided with an array of pinholes through which the flowable substance is released into a shoe by the application of pressure to the insole during walking. Also disclosed is a technique for making insoles in a range of sizes from a single molding.
118 Citations
12 Claims
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1. A shock absorbing cushion comprising:
a cushion having two superimposed synthetic plastic sheets having surfaces being peripherally continuous at their edges and defining an interior space filled with a fluid;
a first group of recesses formed in one of said sheets, each recess being defined by walls extending from the one said sheet in an inward direction towards the other of said sheets and extending to and being sealed with the other of said sheets at the surface of said other sheet so that said other sheet surface is substantially smooth and said one sheet surface has recesses in its surface;
the walls of the recesses of said first group subdividing the interior space into separate compartments and said walls including portions which are spaced from said other sheet to provide fluid passages between the compartments; and
a second group of recesses located within the compartments defined by the first group of recesses, the second group of recesses also being defined by walls and the walls of the second group providing further support function for the shock absorbing cushion.- View Dependent Claims (2, 3, 5, 6, 7, 8, 9, 10, 11, 12)
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4. The shock absorbing cushion means as claimed 1 having a curvilinear continuously smooth outer surface and formed as a shoulder pad.
Specification