Electrical generator or motor structure – Non-dynamoelectric – Piezoelectric elements and devices
Patent
1988-03-23
1989-04-25
Budd, Mark O.
Electrical generator or motor structure
Non-dynamoelectric
Piezoelectric elements and devices
73642, 310326, 310327, 310369, 310800, H01L 4108
Patent
active
048251160
ABSTRACT:
A transmitter- receiver of an ultrasonic distance measuring device comprising a cylindrical piezoelectric element made of a polymer in place of a piezoelectric vibrator of a ceramic material or the like which has heretofore been used. The cylindrical piezoelectric element is secured to a columnar supporter in such a manner as to define a chamber in cooperation with a recess which is provided in the peripheral surface of the supporter. The supporter is provided with a pressure equalizing bore which provides communication between the chamber and the outside. In addition, a conical reflector is provided so as to impart directivity to the ultasonic wave transmitted from the piezoelectric element.
REFERENCES:
patent: 2922140 (1960-01-01), Levine et al.
patent: 3243768 (1966-03-01), Roshon, Jr. et al.
patent: 3748637 (1973-07-01), Larson et al.
patent: 3978353 (1976-08-01), Kinoshita
patent: 4025805 (1977-05-01), Coltman et al.
patent: 4088915 (1978-05-01), Kodama
patent: 4186323 (1980-01-01), Cragg et al.
patent: 4486869 (1984-12-01), Carter
patent: 4495817 (1985-01-01), Hunt et al.
Fujii Toru
Itoh Ichizo
Owada Hiroshi
Budd Mark O.
Kojima Moonray
Yokogawa Electric Corporation
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