Piezoelectric transducer drive

Details Piezoelectric transducer drive Piezoelectric transducer drive

1979-05-29

1981-01-20

Brown, Thomas W.

Electrical generator or motor structure

Dynamoelectric

Rotary

310331, H04R 1700

Patent

active

042464471

ABSTRACT:
A stack of piezoelectric discs for driving the diaphragm of a transducer such as a loudspeaker. The discs are arranged in pairs with the outer edges of each pair supported by engagement with an O-ring against their planar faces. The pairs are connected by studs fixed at the centers of the discs. One end of the stack is secured to a support, and the other end is connected to the diaphragm. In an alternative embodiment, another disc is attached to the stack, with an O-ring cemented between its nodal circle and a rigid support, and a diaphragm is attached to the rim of the disc.

REFERENCES:
patent: 2487962 (1949-11-01), Arndt, Jr.
patent: 3222462 (1965-12-01), Karmann et al.
patent: 3749855 (1973-07-01), Schafft

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