Beds – Bedclothing – And means to facilitate changing thereof
Patent
1979-11-14
1981-12-22
Nunberg, Casmir A.
Beds
Bedclothing
And means to facilitate changing thereof
5455, 5458, 297284, A47C 2708
Patent
active
043063225
ABSTRACT:
A bed assembly (10a) is disclosed. The bed assembly (10a) includes an air mattress (32a) for supporting a human body in a generally prone position. The air mattress (32a) has an overall firmness determined by the amount of air in the air mattress. A port for admitting and releasing air to and from the air mattress (32a) is formed through the air mattress (32a). A box spring support structure (12a) holds the air mattress above a surface. A mechanism (44a) is provided for adjusting the overall firmness of the air mattress (32a) by adjusting the amount of air pressure in the air mattress (32a). The adjusting mechanism (44a) includes a bladder or balloon (48a-54a) for containing a quantity of air and a mechanism (56a) for transferring air between the air mattress (32a) and the bladder (48a-54a) to adjust the relative volume of the air mattress and the bladder. The adjusting mechanism (44a) sets the internal volume of the bladder (48a-54a) at a desired volume in order to set the relative quantity of air between the air mattress (32a) and the bladder (48a-54a) and total volume of the combined air mattress (32a) and bladder (48a-54a).
REFERENCES:
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patent: 3879598 (1975-04-01), Darling
Swenson Emil S.
Young Gary A.
Dial-A-Firm, Inc.
Nunberg Casmir A.
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