Control system for fluid-filled beds

Details Control system for fluid-filled beds Control system for fluid-filled beds

1989-10-20

1991-06-04

Smith, Gary L.

Beds

Bedclothing

And means to facilitate changing thereof

5455, 1374875, 417 38, F16K 3112, A47C 2108

Patent

active

050201760

ABSTRACT:
A system for automatically controlling the pressure maintained in a plurality of fluid-filled cylinders supporting a sleep surface in order to maintain a desired degree of firmness/softness. In one mode, the system permits the user to set the desired level of firmness and then the system acts to maintain that level under the conditions encountered in use, either venting if an above-setting pressure is sensed or pumping to fill if a below-setting pressure is detected. In another mode, the user is enabled to manually activate either the pump or the vent in order to vary the firmness to his choice.

REFERENCES:
patent: 4297755 (1981-11-01), Mollura
patent: 4394784 (1983-07-01), Swenson
patent: 4435864 (1984-03-01), Callaway
patent: 4634179 (1987-01-01), Hashimoto
patent: 4720807 (1988-01-01), Ferran
patent: 4803744 (1989-02-01), Peck
patent: 4829616 (1989-05-01), Walker
patent: 4838309 (1989-06-01), Goodwin
patent: 4873737 (1989-10-01), Savenije

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