Variable capacitor

Details Variable capacitor Variable capacitor

1997-12-19

1999-02-02

Ledynh, Bot

Electricity: electrical systems and devices

Electrostatic capacitors

Variable

361293, 3612981, 3612984, 29 2542, H01G 504, H01G 506, H01G 700

Patent

active

058673601

ABSTRACT:
In a variable capacitor having a stator with a stator electrode and a rotor with a rotor electrode both of which are housed in a recess section of a casing while allowing the recess section to be closed by a cover, enabling the rotor to be brought into stable close contact with the stator. To this end, a cover (46) made of a chosen metal includes a cover main body (55) which covers the upper opening of a recess section (45) except for an adjustment hole (54) that exposes a driver groove (30) of the rotor (43), leg sections (56, 57) which engage a casing (44) letting the cover main body (55) be secured to the casing (44), and a rotor terminal. The cover main body (55) has a size corresponding to the outer diameter of the variable capacitor (41). This cover main body (55) may have a vent shape so as to create intended elastic force which may act to compress the rotor (43) against the stator (42). More preferably, a spring washer (60) is provided which integrally extends from the cover main body (55) and is folded so that it is placed between the cover main body (55) and the rotor (43).

REFERENCES:
patent: 4292660 (1981-09-01), Tatsumi
patent: 4389696 (1983-06-01), Azuchi
patent: 4649459 (1987-03-01), Azuchi
patent: 5461535 (1995-10-01), Kishishita et al.

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