Lying down support comprising a plurality of inflatable...

Details Lying down support comprising a plurality of inflatable... Lying down support comprising a plurality of inflatable...

A - Human Necessities

47

C

360/1

A47C 27/08 (2006.01)

Patent

CA 1247263

ABSTRACT A lying-down support or bed mainly comprises a bottom plate and a plurality of inflatable cushions supported by the plate and connected through a common feed duct with a pressure source. Each cushion or a group of cushions is substantially gastight and is connected through a branch duct with the common duct. Each branch duct is provided with a controlled valve, in order to maintain the desired pressure in each cushion solely through the controlled valve. A computer is connected to a pressure sensor located in the common feed duct and controls the main valve, a relief valve and valves in each of the branch ducts. If the relief valve is open, gas will be exhausted from those cushions connected to the branch ducts whose valves are also open. If the relief valve is closed, pressurized gas is supplied through a pressure reducing valve and an open main valve to the branch ducts and to the cushions whose-valves are also open.

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