Beds – Bedclothing – And means to facilitate changing thereof
Patent
1981-01-02
1983-06-28
Grosz, Alexander
Beds
Bedclothing
And means to facilitate changing thereof
5441, 5451, A47C 2708
Patent
active
043897428
ABSTRACT:
A cushion is disclosed having at least two coextensive overlying fluid compartments. One compartment is inflated with a compressible fluid, preferably air. The other compartment is inflated with a non-compressible fluid, preferably water. The compartments are provided with fluid communicated chambers defined between seams. The chambers and seams of an overlying compartment are at right angles to the chambers and seams of underlying compartments. Fluid communication is provided at apertures in the seams between the chambers. When inflated with water in one compartment, the air in the other compartment and supporting a user, the weight of the supported user is uniquely distributed by the two phase pressure reaction in each of the cushion compartments. Moreover, movement of the user produces a dual fluid phase hunting for a position of compressed equilibrium between the compartments and their respective chambers and seams in the cushion. Greater ease of body movement with a following cushion conformation occurs.
REFERENCES:
patent: 3148389 (1954-09-01), Lustig
patent: 3298044 (1967-01-01), Saltness et al.
patent: 3644949 (1972-02-01), Diamond
patent: 3863283 (1975-02-01), Mohr
patent: 3983587 (1976-10-01), Gorran
patent: 4079473 (1978-03-01), Phillips
patent: 4101995 (1978-07-01), Phillips
patent: 4115885 (1978-09-01), Davis
patent: 4247963 (1981-02-01), Reddi
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