Variable capacitor

Details Variable capacitor Variable capacitor

1993-04-14

1995-06-13

Reynolds, Bruce A.

Electricity: electrical systems and devices

Electrostatic capacitors

Variable

361278, 29 2542, H01G 501

Patent

active

054249066

ABSTRACT:
In order to obtain a stator of a variable capacitor, prepared is a ceramic laminate having a stator electrode provided in its interior and a plurality of burnaway films of carbon or resin, which can be burned away by firing, provided in positions corresponding to that of a concave portion in the form of layers. This ceramic laminate is fired to burn out the burnaway films thereby obtaining a sintered body provided with a plurality of cavities and a plurality of thin layers, and this sintered body is barrel-polished to crush the thin layers, thereby forming a concave portion. A rotor of a metal forming a rotor electrode is arranged on the stator obtained in the aforementioned manner. A cover of a metal is fixed to the stator through an engaging member engaging in the concave portion of the stator, to rotatably store the rotor while pressing the rotor against the stator by a spring action part.

REFERENCES:
patent: 3175134 (1965-03-01), Matsui
patent: 4101951 (1978-07-01), Kuze
patent: 4112480 (1978-09-01), Johanson
patent: 4181923 (1980-01-01), Tatsumi
patent: 4292660 (1981-09-01), Tatsumi
patent: 4594640 (1986-06-01), Tatsumi
patent: 5013505 (1991-05-01), Masuda

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