Cushioning media including lubricated spherical objects

Details Cushioning media including lubricated spherical objects Cushioning media including lubricated spherical objects

1996-08-06

2000-02-01

Le, H. Thi

Stock material or miscellaneous articles

Web or sheet containing structurally defined element or...

Including a second component containing structurally defined...

106122, 428325, 428327, 428331, 428338, 428339, B32B 516

Patent

active

060200553

ABSTRACT:
A composite mixture of spherical objects and lubricant useful for its cushioning properties is disclosed and claimed. The composite mixture may be composed of microspheres typically less than 2000 microns in diameter with inert atmospheres sealed within their interiors and any of a variety of lubricants facilitating sliding and rolling movement between microspheres. Typically the composite mixture includes lubricant in a quantity sufficient to substantially coat the exterior surface of essentially all of the spherical objects, but in a quantity less than would cause dispersion of the spherical objects in the lubricant sufficient to physically separate the spherical objects from each other and substantially reduce the sliding and rolling contact of the spherical objects with each other. Low specific gravity, low thermal mass, low coefficient of heat transfer, lack of head pressure, insulative and flotation qualities are provided by the invention. The composite mixture may be contained in fluid-tight confinement within a flexible bladder. The preferred bladder has a stretchable fabric laminated to an impermeable, stretchable film.

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