Piezoelectric polymeric film balloon speaker

Details Piezoelectric polymeric film balloon speaker Piezoelectric polymeric film balloon speaker

1986-03-19

1987-01-20

Budd, Mark O.

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

310330, 310334, 310338, 310800, H01L 4108

Patent

active

046382070

ABSTRACT:
Piezoelectric polymer film, when conformably adhered to inner or outer curved surfaces of an inflated balloon, for example, acts as a speaker when the metallized coatings of the film are suitably connected to the output of an audio device. The film may be in the form of an helical strip, or individual strips elastically serially connected, or may itself form the inflatable material. Amplifying and impedance matching means may be interposed between the audio output and film coatings.

REFERENCES:
patent: 3792204 (1974-02-01), Murayama et al.
patent: 4064375 (1977-12-01), Russell et al.
patent: 4088915 (1978-05-01), Kodama
patent: 4166229 (1979-08-01), De Reggi et al.
patent: 4401911 (1983-08-01), Ravinet et al.
patent: 4423768 (1984-01-01), Edelman et al.
patent: 4504761 (1985-03-01), Triplett
patent: 4517665 (1985-05-01), De Reggi et al.
Model for a Compliant Tube Polymer Hydrophone, by D. Ricketts, JASA, vol. 79, No. 5, May 1986, pp. 1603-1609.

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