Cushioning system with parallel sheets having opposing...

Beds – Support for users body or part thereof – Spring containing

Reexamination Certificate

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C005S719000, C005S654100, C267S164000, C267S142000

Reexamination Certificate

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07574760

ABSTRACT:
A cushion comprises a first surface made of flexible high polymer resin; a second surface made of flexible high polymer resin, in at least partially coextensive relation to the first surface to define a cavity therebetween, the coextensive relation defining opposing corresponding portions of the first and second surfaces; a plurality of support members comprising inwardly directed indentations in both of the first and second surfaces extending into the cavity, a plurality of the indentations in each of the first and second surfaces having a square shape and an outwardly facing recess, a plurality of the indentations in the first surface abutting the indentations in the second surface; a layer of viscoelastic foam substantially overlying the first surface; and, a fabric enclosure surrounding the first surface, the second surface and the foam layer.

REFERENCES:
patent: 2433012 (1947-12-01), Zalicovitz
patent: 2434641 (1948-01-01), Burns
patent: 3280410 (1966-10-01), Propst et al.
patent: 3618144 (1971-11-01), Frey et al.
patent: 5572804 (1996-11-01), Skaja et al.
patent: 5787533 (1998-08-01), Fromme
patent: 6189168 (2001-02-01), Graebe
patent: 6353953 (2002-03-01), Tanaka et al.
patent: 6931685 (2005-08-01), Kuchel et al.

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