Electrical generator or motor structure – Non-dynamoelectric – Piezoelectric elements and devices
Patent
1988-01-19
1989-06-27
Budd, Mark O.
Electrical generator or motor structure
Non-dynamoelectric
Piezoelectric elements and devices
310338, 310339, 310337, 310800, 381190, H01L 4108
Patent
active
048432750
ABSTRACT:
Piezoelectric polymer film, when conformably adhered to inner or outer surfaces of an inflated balloon, functions as a microphone when the pressure of sound waves causes the film to vibrate and generate an electrical signal. The film may be in the form of an helical strip, individual strips electrically serially connected, or may itself form the inflatable material. A receiving device is electrically coupled with the electrodes formed on the piezoelectric film for processing the electrical signals generated by the vibrating piezoelectric polymer film.
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J. F. Sear et al., "Noise-Cancelling Microphone Using a Piezoelectric Plastics Transducer Element," Electronics Letter, vol. 11, 1975.
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Kynar.RTM. Piezo Film Technical Manual, Pennwalt Corporation, Philadelphia, Pa., pp. 42-43, 1987.
Budd Mark O.
Pennwalt Corporation
Plantz Bernard F.
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