Air supply and control apparatus for inflatable mattress
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United States of America Patent
Stats
-
Dec 8, 1987
Grant Date -
N/A
app pub date -
Dec 1, 1986
filing date -
Dec 4, 1985
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An air supply and control apparatus for an inflatable mattress 2 has several air compressors 1 which are operated in turn, during normal operation, to inflate the mattress 2. In the case of the pressure in the mattress 2 falling below an upper preset value the air supply is provided by having more than one air compressor 1 operate simultaneously. The apparatus has electronic circuitry for effecting this alteration of the mode of operation when pressure sensing means 4 detects a fall in mattress pressure. In the case of a more severe drop in mattress pressure a valve 16 in an air outlet of the mattress 2 is closed under control of the electronic circuitry. The apparatus is particularly suitable for use with a mattress 2 having a plurality of separately inflatable regions, air being supplied to the regions from the air compressors 1 via a distributor 3.
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Family
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