Water bed with compact built-in drain pump

Details Water bed with compact built-in drain pump Water bed with compact built-in drain pump

1992-05-11

1993-04-20

Grosz, Alexander

Beds

Bedclothing

And means to facilitate changing thereof

5918, 141 65, 417151, 417181, A47C 2708

Patent

active

052038084

ABSTRACT:
A water bed having a built-in drain pipe. The water bed includes a water tight bladder penetrated by a pump assembly connected to the bladder by a bell shaped insert. The pump assembly includes an inlet port and an outlet port and a jet pump connected between the inlet port and the outlet port. The contents of the water tight bladder can be sucked out by providing a motive liquid at the inlet port and attaching drain tubing at the outlet port. The jet pump includes a jet nozzle and a diffuser aligned with the jet nozzle. A filter may be provided to allow filtering of fluid drawn into the diffuser. The jet pump and fluid passages leading into and out of the pump can be formed as a single piece.

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patent: 4727607 (1988-03-01), Nystad
patent: 4810170 (1989-03-01), Ide
patent: 5090075 (1992-02-01), Larson
patent: 5136739 (1992-08-01), Ide

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