Beds – With heating or cooling – And means to force air
Patent
1993-11-29
1995-05-23
Trettel, Michael F.
Beds
With heating or cooling
And means to force air
5469, 5284, 29718013, A47C 2104
Patent
active
054169356
ABSTRACT:
A surface air conditioning device includes a plurality of passages through a support surface which overlies a closed volume in which temperature conditioned air is supplied; each passage is provided with a pressure actuated flow control valve which is normally closed to prevent loss of conditioned air through the associated passage; pressure contact with the valve effects opening thereof to allow conditioned air to flow through the passage.
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