Watermattress apparatus

Details Watermattress apparatus Watermattress apparatus

1994-09-02

1996-05-07

Trettel, Michael F.

Beds

Bedclothing

And means to facilitate changing thereof

5422, 5470, 5455, A47C 2710

Patent

active

055134017

ABSTRACT:
A watermattress apparatus has a cushion body which is elastically compressed when a load has been exerted thereon. A case is laminated on the upper surface of the cushion body. The case has upper and lower surfaces and a receiving portion opening to the upper surface. A water bag formed of a flexible waterproof sheet and containing a liquid therein is received in the receiving portion. An envelope covers the laminated cushion body and case.

REFERENCES:
patent: 3766579 (1973-10-01), Shields
patent: 4221013 (1980-09-01), Echevarria
patent: 4316423 (1982-02-01), Nordstrom
patent: 4602396 (1986-07-01), Fraige
patent: 4737998 (1988-04-01), Johson, Sr.
patent: 4798936 (1989-01-01), Johnson, Sr.
patent: 4912789 (1990-04-01), Maxwell
patent: 5367727 (1994-11-01), Dyer, Jr.

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