Derek Paul Dotson

US Patent:

50201760, Jun 4, 1991

Filed:

Oct 20, 1989

Appl. No.:

7/424863

Inventors:

Derek P. Dotson - Thousand Oaks CA

Assignee:

Angel Echevarria Co., Inc. - Los Angeles CA

International Classification:

F16K 3112
A47C 2108

US Classification:

5453

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.