Flextensional transducer

Details Flextensional transducer Flextensional transducer

1988-04-26

1989-09-05

Steinberger, Brian S.

Communications, electrical: acoustic wave systems and devices

Signal transducers

Underwater type

367156, 367165, 367168, 310 26, 310337, H01L 4104, H01L 4106, H04R 1500, H04K 1700

Patent

active

048645486

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. The curved shells are attached to the ends of the driver and vibrate with a magnified motion as the rods execute extensional motion. As the polygon expands the curved shells deform and produce additional motion 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.
patent: 4742499 (1988-05-01), Butler
patent: 4754441 (1988-06-01), Butler

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