Electrical generator or motor structure – Non-dynamoelectric – Piezoelectric elements and devices
Patent
1984-10-18
1986-12-09
Budd, Mark O.
Electrical generator or motor structure
Non-dynamoelectric
Piezoelectric elements and devices
310334, 310800, H01L 4108
Patent
active
046282238
ABSTRACT:
A high-sensitivity ultrasonic probe comprising a plate of a composite material having the regions of a piezoelectric ceramic polarized uniformly in the direction of thickness and the regions of polymer, both regions existing dispersed alternately in the direction parallel to the plate surface, electrodes formed on both sides of the composite material, and a connecting layer formed on at least one side of the composite material and composed of a material harder than said polymer.
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patent: 4217684 (1980-08-01), Brisken
patent: 4233477 (1980-11-01), Rice et al.
patent: 4366406 (1982-12-01), Smith et al.
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patent: 4412148 (1983-10-01), Klicker et al.
patent: 4422003 (1983-12-01), Safari et al.
patent: 4473769 (1984-09-01), Nguyen
Katakura Kageyoshi
Nakaya Chitose
Takeuchi Hiroshi
Umemura Shin'ichiro
Budd Mark O.
Hitachi , Ltd.
Hitachi Medical Corporation
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