Pressure equalizer for waterbed

Details Pressure equalizer for waterbed Pressure equalizer for waterbed

1975-08-28

1976-12-28

Gilliam, Paul R.

Beds

Bedsteads

Element or detail

A47C 2708

Patent

active

039992357

ABSTRACT:
The waterbed comprises a body supporting liquid filled bag or bladder and a freely expansible ballast chamber in unrestricted fluid communication with the body supporting bag or bladder. The fluid interchange operates to regulate and maintain at a comfortable low value, the surface stress of the bag or bladder.

REFERENCES:
patent: 3585661 (1971-06-01), Gottfried et al.
patent: 3867731 (1975-02-01), Isaac

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