Fluid handling – With indicator – register – recorder – alarm or inspection means – Position or extent of motion indicator
Patent
1987-04-28
1989-01-17
Rivell, John
Fluid handling
With indicator, register, recorder, alarm or inspection means
Position or extent of motion indicator
137883, 25112911, 251205, 251266, F16K 3700, F16K 3104, F16K 3150
Patent
active
047982276
ABSTRACT:
An improved patient support structure comprises an articulatable frame, a plurality of elongated inflatable sacks, a low pressure compressed air blower and a plurality of pipes for carrying gas from the blower to the sacks. A multi-outlet, variable flow, gas valve comprises a housing defining an inlet and a passageway. The valve housing further defines at least two cylinder chamber communicating with the passageway and a discrete outlet for each cylinder chamber communicating therewith. A piston is substantially non-rotatably disposed inside each cylinder chamber and has a threaded opening through the center thereof with receives a threaded portion of a rotatable shaft therethrough. One end of the shaft is rotated by a motor, and the other end of the shaft is connected to an axle of a potentiometer.
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Rivell John
SSI Medical Services, Inc.
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