Piezoelectric vibrating apparatus

Details Piezoelectric vibrating apparatus Piezoelectric vibrating apparatus

1997-10-15

2000-01-11

Ramirez, Nestor

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

310328, 310330, 310331, H01L 4104

Patent

active

060139722

ABSTRACT:
A vibrating mechanism comprised of piezoelectric elements which vibrate at a high frequency when a voltage is applied to them. The piezoelectric elements are mounted on a rib so that their free ends extend from the rib. When the piezoelectric elements are energized the free ends vibrate with a "wing-flapping" motion. Weights may be attached to the free ends of the piezoelectric element to increase the inertial component of vibration. In the preferred embodiment of the invention, the piezoelectric elements are prestressed. The invention will be an inexpensive substitute for other vibratory devices.

REFERENCES:
patent: 3247404 (1966-04-01), Batsch
patent: 3622815 (1971-11-01), Schafft
patent: 4533849 (1985-08-01), Schnell
patent: 4538087 (1985-08-01), Germano et al.
patent: 4575697 (1986-03-01), Rao et al.
patent: 4595338 (1986-06-01), Kolm et al.
patent: 4633121 (1986-12-01), Ogawa et al.
patent: 4742260 (1988-05-01), Shimizu et al.

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