High-temperature stacked-type displacement device

Electrical generator or motor structure – Non-dynamoelectric – Piezoelectric elements and devices

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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.

REFERENCES:
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patent: 3861852 (1975-01-01), Berger
patent: 4284263 (1981-08-01), Newcomb
patent: 4570098 (1986-02-01), Tomita
patent: 4695034 (1987-09-01), Shimizu et al.
patent: 5038069 (1991-08-01), Lukasiewicz et al.
patent: 5092360 (1992-03-01), Watanabe et al.
patent: 5196756 (1993-03-01), Kohno et al.
Piezoelectric Ceramics, by Bernard Jaffe et al, Academic Press, 1971, pp. 120-125.

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