Electricity: motive power systems – Automatic and/or with time-delay means – Responsive to thermal conditions
Patent
1985-02-01
1986-09-02
Shoop, Jr., William M.
Electricity: motive power systems
Automatic and/or with time-delay means
Responsive to thermal conditions
5453, 318334, G05D 2300, H02P 300
Patent
active
046098542
ABSTRACT:
A sensor is provided in a hospital bed having a bed-mat made of movable particles. This sensor is to detect an excessive bead temperature in the case of a controller malfunction and to control the operation of a cooler. In the sensor, the circuit is so designed that an air compressor runs intermittently with the aid of timers while the sensor performs its functions at a temperature above the predetermined temperature level. The sensor also enables the compressor to run again when the temperature of the mat lowers to a level where a normal operation is possible to assure temperature control of the bed-mat even in the case of controller malfunctions.
Kurita Masaya
Yamamoto Hitoshi
Fuji Electric Company Ltd.
Keane Patrick C.
Shoop Jr. William M.
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