Electrical generator or motor structure – Non-dynamoelectric – Piezoelectric elements and devices
Patent
1991-12-13
1993-07-27
Budd, Mark O.
Electrical generator or motor structure
Non-dynamoelectric
Piezoelectric elements and devices
310328, 310354, 310358, H01L 4108
Patent
active
052313255
ABSTRACT:
In an ultrasonic vibrator of structure in which an electro-mechanical energy conversion element for generating a vibration is held by and between electrically conductive blocks and in which a mechanical-electrical energy conversion element for detecting the vibration state of the vibrator is inserted between the blocks, the potentials of the blocks are made different from each other by various means. Therefore, the detection of the vibration state becomes possible, for example, by a detecting element.
REFERENCES:
patent: 3140859 (1964-07-01), Scarpa
patent: 3843897 (1974-10-01), Mishiro
patent: 4728843 (1988-03-01), Mishiro
patent: 4764702 (1988-08-01), Mishiro
patent: 4885499 (1989-12-01), Ueha et al.
Atsuta Akio
Tamai Jun
Budd Mark O.
Canon Kabushiki Kaisha
Dougherty Thomas M.
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