Waterbed mattress with draining system

Details Waterbed mattress with draining system Waterbed mattress with draining system

1992-07-06

1993-07-13

Grosz, Alexander

Beds

Bedclothing

And means to facilitate changing thereof

5918, 141 65, 417181, A47C 2708

Patent

active

052261867

ABSTRACT:
A waterbed mattress has a watertight envelope having a top, a bottom and sides. The envelope defines a cavity for water. First and second valves are disposed in the envelope to selectively allow fluid communication between the cavity and the exterior of the envelope. The second valve is spaced from the first valve. Pump structure is operatively connected to the first and second valves for selectively evacuating water from the cavity. The pump structure includes a venturi member which operates inside the envelope to evacuate water from the envelope.

REFERENCES:
patent: 1212479 (1917-01-01), Hall
patent: 3456270 (1969-07-01), Weinstein et al.
patent: 3707735 (1973-01-01), Carson, Jr.
patent: 3787908 (1974-01-01), Beck et al.
patent: 4332044 (1982-06-01), Houk, Jr.
patent: 5027453 (1991-07-01), Koenig
patent: 5136739 (1992-08-01), Ide

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