Inflatable bed

Details Inflatable bed Inflatable bed

1987-05-19

1989-02-14

Grosz, Alexander

Beds

Bedclothing

And means to facilitate changing thereof

5455, A47C 2710

Patent

active

048037443

ABSTRACT:
This invention is concerned with an improved air bed system. In this invention, the bed occupant can control the firmness of the bed. Two inflatable bladders are used with a pre-set pressure differential between them. The pressure in the lower bladder is always kept high enough to prevent bottoming of a bed occupant. The pressure in the upper bladder can be adjusted by the occupant to his or her own personal comfort level. The invention may also include various medical devices which are fluid powered, thus taking advantage of the presence of the pressurized working fluid. The invention may further include a warning circuit which senses the departure of an occupant from the bed and generates a warning signal in response thereto.

REFERENCES:
patent: 3644950 (1972-02-01), Lindsay
patent: 3653083 (1972-04-01), Lapidus
patent: 3674019 (1972-07-01), Grant
patent: 3822425 (1974-07-01), Scales
patent: 4193149 (1980-03-01), Welch
patent: 4224706 (1980-09-01), Young et al.
patent: 4225989 (1980-10-01), Corbett et al.
patent: 4394784 (1983-07-01), Swenson et al.
patent: 4435864 (1984-03-01), Callaway
patent: 4525885 (1985-07-01), Hunt et al.

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