Piezoelectric loudspeaker

Details Piezoelectric loudspeaker Piezoelectric loudspeaker

1980-08-13

1983-05-31

Stellar, George G.

Electrical generator or motor structure

Dynamoelectric

Rotary

310334, H04R 1700

Patent

active

043862411

ABSTRACT:
A piezoelectric loudspeaker comprises a support member having an opening therethrough in which is disposed a circular piezoelectric vibrator. The vibrator is secured at its periphery to the support member so as to be vibrationally driven in response to a driving signal applied thereto. A sound-producing vibratable member is secured at its periphery to the support member and is coupled to the piezoelectric vibrator at a central circular region which is concentric with the vibrator. The piezoelectric vibrator and the vibrating member are coupled together by means of a cylindrical coupling member which effectively transmits the vibrational movement of the vibrator to the vibratable member to effect vibration of the vibratable member over a wide frequency range including the low end of the audible range to produce a corresponding wide range of acoustic sounds.

REFERENCES:
patent: 2607858 (1952-08-01), Mason
patent: 2910545 (1959-10-01), Glenn
patent: 3166730 (1965-01-01), Brown, Jr. et al.
patent: 3588381 (1971-06-01), Schafft
patent: 3721840 (1973-03-01), Yamada
patent: 4283605 (1981-08-01), Nakajima

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