Piezoelectric actuator

Details Piezoelectric actuator Piezoelectric actuator

1989-07-28

1990-09-18

Budd, Mark O.

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

123498, 310340, H01L 4108

Patent

active

049581015

ABSTRACT:
A piezoactuator comprising a housing having a piston bore formed therein. The tip portion of a piston is slidably inserted into the cylinder bore and defines a variable volume chamber therein, and a piezoelectric element is supported between the piston and the housing. A hollow cylindrical resilient member is fitted onto the outer wall of the piston and inserted between the piston and the housing to apply a compression load to the piezoelectric element via the piston. The hollow cylindrical resilient member has a plurality of circumferentially extending slots arranged in a point of symmetry about the axis of the hollow cylindrical resilient member.

REFERENCES:
patent: 3766415 (1973-10-01), Dame et al.
patent: 3903435 (1975-09-01), Bouygves et al.
patent: 4553059 (1985-11-01), Abe et al.
patent: 4782807 (1988-11-01), Takahashi
patent: 4814659 (1989-03-01), Sawada

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