Electrical generator or motor structure – Non-dynamoelectric – Piezoelectric elements and devices
Patent
1993-10-06
1994-07-26
Budd, Mark O.
Electrical generator or motor structure
Non-dynamoelectric
Piezoelectric elements and devices
200181, 310340, H01L 4108
Patent
active
053329449
ABSTRACT:
An electrical switch assembly for use in a warm, humid environment to initiate operation of electrical equipment such as hot tub or spa pumps, blowers and heaters. The assembly includes a hollow enclosure having an access opening. An actuator extends through and is movable within the access opening. A rigid circuit board fixed in position within the enclosure supports a piezoelectric subassembly which is deformable by the actuator to generate an electrical signal. Resiliently deformable potting material fills all the open spaces around the circuit board, the piezoelectric subassembly and the actuator. The potting material prevents moisture intrusion but is resiliently deformable to allow operational movement of the piezoelectric subassembly and the actuator.
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Budd Mark O.
McLellan J. F.
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