High power piezoelectric bender

Details High power piezoelectric bender High power piezoelectric bender

1975-12-29

1977-11-29

Budd, Mark O.

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

310369, H01L 4104

Patent

active

040607410

ABSTRACT:
A bimorph bender is comprised of a pair of piezoelectric circular discs having diametrically opposed surface portions. Signal carrying electrodes are formed contiguous with each surface portion. A center vane is sandwiched between the discs maintaining them in a fixed spaced relation. The bender dishes in response to the electrical signals appearing at the electrodes.
Mechanical coupling to the bender is provided by a washer which is affixed in the central portion of the bender. The washer is made of a high specific stiffness material for maintaining a high electro-mechanical coupling factor. The resulting structure provides a highly reliable and efficient power transducer.

REFERENCES:
patent: 3351393 (1967-11-01), Emmerich
patent: 3548116 (1970-12-01), Schafft
patent: 3592967 (1971-07-01), Harris
patent: 3596116 (1971-07-01), Walton
patent: 3629625 (1971-12-01), Schafft
patent: 3675053 (1972-07-01), Mifune

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