Internally pressurized envelope

Details Internally pressurized envelope Internally pressurized envelope

A - Human Necessities

43

B

36/82

A43B 13/40 (2006.01)

Patent

CA 1341337

An internally pressurized envelope according to the present invention has spaced inner and outer surfaces characterized by a load deflection curve having a first and second region. The first region reflects the compliance upon initial application of a load and the second region reflects the compliance after the initial application of the load. The curve is such that the compliance of the first region of the curve is less than the compliance of the second region of the curve. The envelope is particularly useful as a cushioning layer and can be used in shoes.

616957

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