Variable capacitor

Details Variable capacitor Variable capacitor

1984-08-30

1986-06-10

Griffin, Donald A.

Electricity: electrical systems and devices

Electrostatic capacitors

Variable

H01G 506

Patent

active

045946400

ABSTRACT:
Disclosed herein is a variable capacitor in sealed structure having the following construction: Within an insulating case being opened at one side, a stator electrode and a rotor electrode are arranged in a state being opposed to each other through a dielectric plate. The rotor electrode is formed in one surface of a metal rotor rotatably arranged within the insulating case. The other surface of the metal rotor is directed toward the opening of the insulating case, on which other surface an adjusting groove is formed and a ring-shaped base portion of a resilient presser member is arranged in a state not obstructing the adjusting groove. Spring portions extend from the base portion of the resilient presser member, to be in contact with the other surface of the metal rotor. An annular sealing member is fixedly provided in the base portion of the resilient presser member. The sealing member encloses the spring portions, to be in contact with the metal rotor in the vicinity of the outer peripheral portion of the other surface thereof as well as the inner peripheral surface of the insulating case.

REFERENCES:
patent: 2205816 (1940-06-01), Hartzell
patent: 4242716 (1980-12-01), Johanson et al.
patent: 4283751 (1981-08-01), Tatsumi
patent: 4292660 (1981-09-01), Tatsumi

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