Electrostrictive effect device

Details Electrostrictive effect device Electrostrictive effect device

1993-05-07

1994-08-02

Dougherty, Thomas M.

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

310328, H01L 4104

Patent

active

053349024

ABSTRACT:
An electrostrictive effect element is enclosed by a hermetic terminal, a thin-film metallic case, and a metallic member so as to weld the terminal onto the case and the case onto the member. The obtained unit is installed in a thick-film metallic case with sliding members such as O-shaped rings disposed between the unit and the case, thereby forming an electrostrictive effect device. Moreover, to facilitate installation of the device in an apparatus, a screw groove is disposed on a side surface at least at a location near an end surface of the thick-film case. The structure removes the disadvantage that a leakage occurs in the hermetic state due to a flaw caused on the thin-film case, for example, by a blow. Moreover, when installing the device in an apparatus, the user may grasp the device on the side surface thereof, which improves operability of the device in the installation thereof.

REFERENCES:
patent: 4438363 (1984-03-01), Babitzka et al.
patent: 4729459 (1988-03-01), Inagaki et al.
patent: 4909440 (1990-03-01), Mitsuyasu et al.
patent: 5113108 (1992-05-01), Yamashita et al.
patent: 5208506 (1993-05-01), Yamashita
patent: 5233258 (1993-08-01), Myoga et al.
patent: 5239223 (1993-08-01), Miyoshi

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