Electrical generator or motor structure – Non-dynamoelectric – Piezoelectric elements and devices
Patent
1992-10-28
1994-01-25
Budd, Mark O.
Electrical generator or motor structure
Non-dynamoelectric
Piezoelectric elements and devices
310358, 310346, 25112901, H01L 4108
Patent
active
052818853
ABSTRACT:
A flow rate control valve including a valve chest having an open end, an inflow passage and outflow passage each having one end communicating with the valve chest and the other end opened, a valve seat provided at the end of the inflow passage or outflow passage communicating with the valve chest, a sheet-like diaphragm provided to tightly close the open end of the valve chest and a stacked-type dispalcement device made of an electromechanical transducing material exhibiting the maximum value of piezoelectric distortion constant at a higher temperature range than 100.degree. C. or above and which exerts a pressure on the diaphragm by its deformation to change the position of the diaphragm, thereby controlling the gap between the valve seat and the diaphragm.
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Piezoelectric Ceramics, by Bernard Jaffe et al, Academic Press, 1971, pp. 120-125.
Jomura Shigeru
Someji Takahiro
Watanabe Jun-ichi
Watanabe Yoshiyuki
Budd Mark O.
Hitachi Metals Ltd.
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