Visco-elastic material comprising a polymeric foam impregnated w

Details Visco-elastic material comprising a polymeric foam impregnated w Visco-elastic material comprising a polymeric foam impregnated w

1972-08-31

1977-02-15

Smith, Ronald H.

Stock material or miscellaneous articles

Web or sheet containing structurally defined element or...

Composite having voids in a component

2239, 260 25BE, 427385B, 428315, B32B 326, B32B 518

Patent

active

040083500

ABSTRACT:
A padded stocking, suitable as footwear in conjunction with a ski boot or the like, is provided comprising a stocking having affixed to the ankle and shin region thereof a conformable layer of a visco-elastic material, such as a flexible open-cell polyurethane foam impregnated with an acrylic resin, which functions as a padding, said conformable layer having retarded deformation and recovery characteristics such that said layer with a thickness of at least 1/8 inch has a compression modulus of 1 to 15 pounds per square inch when measured at a deformation rate of 2 inches per minute and a plot of said compression modulus versus time yields a curve with a slope of -0.3 to -2.0 pounds per square inch per second when said layer is compressed at deformation rates of 2 to 20 inches per minute.

REFERENCES:
patent: 3070476 (1962-12-01), Miller
patent: 3503822 (1970-03-01), Turkewitsch
patent: 3635848 (1972-01-01), Rambosck
patent: 3665918 (1972-05-01), Lindquist et al.

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