Articulated bed with cellular air cushion mattress

Details Articulated bed with cellular air cushion mattress Articulated bed with cellular air cushion mattress

1984-04-04

1987-08-18

Smith, Gary L.

Beds

Bedclothing

And means to facilitate changing thereof

5455, A47C 2708, A47C 2710

Patent

active

046867228

ABSTRACT:
Individual groups of inflatable cushions forming an air mattress are supplied with pressurizing air through a common feed duct having an upstream on/off valve and individual on/off valves in branch ducts leading to individual groups of cushions. When the upstream valve is open, it exhausts pressure air from the branch ducts so that if any one of the branch duct valves is also open, its associated group of cushions are subjected to reduced pressure. The individual valves may be operated to isolate groups of cushions from each other while the upstream valve is closed and thus subject a particular group of cushions to system pressure. A single pressure sensor measures the pressure to which the particular group of cushions is subjected and the whole system may be programmed though a computer for automatic control dependent upon individual user requirements.

REFERENCES:
patent: 3330598 (1967-07-01), Whiteside
patent: 3822425 (1974-07-01), Scales
patent: 4346489 (1982-08-01), McMullan
patent: 4394784 (1983-07-01), Swenson et al.
patent: 4488322 (1984-12-01), Hunt et al.

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