Flextensional transducer

Details Flextensional transducer Flextensional transducer

1986-06-13

1988-05-03

Kyle, Deborah L.

Communications, electrical: acoustic wave systems and devices

Signal transducers

Underwater type

367156, 367165, 367168, 310 26, 310334, 310337, 381190, 318118, 73DIG2, H01L 4106, H01L 4104, H04R 1700, H04R 1500

Patent

active

047424990

ABSTRACT:
An acoustic transducer for providing large displacements particularly at low acoustic frequencies is formed from a minimum of three curved shells which are attached to each other at their ends. The shells are driven by a ring or corresponding number of attached piezoelectric or magnetostrictive type rod or bar drivers which take the form of a regular polygon. The curved shells are attached to the ends of the driver and vibrate with magnified motion as the rods execute extensional motion. As the polygon expands the curved shells deform and produce additional motional in the same radial direction resulting in a large total displacement and corresponding large acoustic output.

REFERENCES:
patent: 2064911 (1936-12-01), Hayes
patent: 3160769 (1964-12-01), Abbott
patent: 3258738 (1966-06-01), Merchant
patent: 3277433 (1966-10-01), Toulis
patent: 4072871 (1978-02-01), Wilson
patent: 4384351 (1983-05-01), Pagliarini, Jr. et al.
patent: 4432080 (1984-02-01), Wardle
patent: 4443731 (1984-04-01), Butler et al.

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