Resonator exhibiting uniform motional output

Details Resonator exhibiting uniform motional output Resonator exhibiting uniform motional output

1981-01-26

1982-12-14

Budd, Mark O.

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

74155, 310325, H01L 4108

Patent

active

043639925

ABSTRACT:
This invention relates to resonators as used in sonic or ultrasonic apparatus. Particularly with bar type resonators there is manifest a reduction of vibrational amplitude at the output surface from the central area toward the lateral edges. In the present arrangement the input surface is provided with pads to increase the mass ratio between the input and output sections for effecting substantially uniform motional amplitude along the entire output surface.

REFERENCES:
patent: 2704333 (1955-03-01), Calosi et al.
patent: 3601084 (1971-08-01), Bird et al.
patent: 3774317 (1973-11-01), Balamuth et al.
patent: 4315181 (1982-02-01), Holz, Jr.

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