Dual direction switch

Details Dual direction switch Dual direction switch

1989-10-31

1991-07-23

Budd, Mark O.

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

310319, 310339, 310800, H01L 4108

Patent

active

050346482

ABSTRACT:
A piezo film switch comprises a cantilever with a pair of layers, including a piezo film layer and a flexible, backing layer laminated thereto. The piezo film layer produces a positive or negative output pulse, depending upon a direction of deflection of the cantilever. Interface circuitry coupled to the piezo film layer is powered by the output pulses and provides "pseudo contact closures" which emulate the operation of a mechanical switch.

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Ben H. Carlisle, "Piezoelectric Plastics Promise New Sensors", Machine Design (Oct. 23, 1986), pp. 105-110.
Kynar.RTM. Piezo Film Technical Manual (1987), Pennwalt Corporation, Philadelphia, PA.
"Kynar.RTM. Piezo Film Product Summary and Price List" (1988), Pennwalt Corporation, Philadelphia, PA.
Gale E. Nevil et al., "The Potential of Corrugated PVDF Bimorphs for Actuation and Sensing", Paper from Robotics Research: The Next Five Years and Beyond (Aug. 14-16, 1984).
James E. Hubbard et al., "The Active Vibration Control of a Cantilever Beam Using PVF.sub.2 in a Simulated Space Environment", CSDL-R-1821 Draper Laboratory Report (Dec. 1985).

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