Electrostrictive actuators

Details Electrostrictive actuators Electrostrictive actuators

1989-06-09

1990-02-20

Griffin, Donald A.

Electricity: electrical systems and devices

Electrostatic capacitors

Fixed capacitor

29 2542, H01G 410, H01G 700

Patent

active

049031660

ABSTRACT:
An improved method of forming electrostrictive actuators or capacitors is disclosed. A stack of green ceramic sheets is formed, a surface of the sheets including areas of electrode forming material and other areas of heat dispersible material. The electrodes of opposite polarity are exposed at opposite surfaces of the stack and areas of dispersible material intervene between the exposed edges of the electrode ink margins. An actuator fabricated in accordance with the method may be terminated without fear of shorting between adjacent layers and the resultant actuator will be essentially free of dielectric bonding whereby, when used as an actuator, a high degree of expansion will be achieved. The invention is further directed to a preform fabricated in accordance with the method of the invention.

REFERENCES:
patent: 2437212 (1948-03-01), Schottland
patent: 4685197 (1987-08-01), Tigelaar et al.

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