Sensor structure incorporating multiple piezoelectric generators

Details Sensor structure incorporating multiple piezoelectric generators Sensor structure incorporating multiple piezoelectric generators

1981-09-15

1984-02-14

Miller, J. D.

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

73505, 310329, 310364, 310366, H01L 4102

Patent

active

044319355

ABSTRACT:
Sensor structure integrates multiple piezoelectric bender elements into a single piezoelectric unit. A single base member comprising a plurality of plates of piezoelectric material includes three or more electrodes for forming two or more bender elements. Preferred embodiments include one or more of the following: (i) electrodes for forming inactive regions near structure center and/or ends, (ii) aspects of structural symmetry aiding to establish preferred signal phase and amplitude relationships (iii) base member fashioned according to a three layer laminated structure (iv) circular base member (v) uniform plate polarization (vi) two or four substantially matched bender elements.

REFERENCES:
patent: 2716893 (1955-09-01), Birdsall
patent: 3271622 (1966-09-01), Malagodi et al.
patent: 3760203 (1973-09-01), Guntersdorfer
patent: 3842681 (1974-10-01), Mumme
patent: 4113387 (1978-09-01), Shutt

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