Variable capacitor

Details Variable capacitor Variable capacitor

1998-09-08

2000-10-17

Kincaid, Kristine

Electricity: electrical systems and devices

Electrostatic capacitors

Variable

361289, 3613081, 361310, 361278, H01G 506

Patent

active

061340979

ABSTRACT:
A variable capacitor has a stator, a rotor, and a cover. The stator includes a stator electrode and a stator terminal connected electrically to the stator electrode. The rotor includes a rotor electrode facing the stator electrode with a dielectric disposed therebetween. The cover is shaped so as to accommodate and hold the rotor so that it can be rotated relative to the stator. An adjustment hole is formed in the cover so as to permit insertion of a tool for rotating the rotor. A spring-action portion is formed around the adjustment hole to thereby press the rotor against the stator. The stator terminal is formed so as not to extend onto a stator surface facing an edge portion of the cover, thereby maintaining a relatively long distance between the stator terminal and the edge portion of the cover and that between the stator terminal and the rotor. Thus, when the size or thickness of the variable capacitor is reduced, the problem of short circuiting or poor dielectric strength, which would otherwise tend to occur when the edge portion of the cover and the rotor are located in the proximity of the stator or when the cover or the rotor is dislocated during rotation of the rotor, can be effectively prevented. Also, rotor deformation can be prevented which would otherwise result from a pressing force applied to the rotor by the spring-action portion.

REFERENCES:
patent: 4039906 (1977-08-01), Wahi et al.
patent: 4181923 (1980-01-01), Tatsumi et al.
patent: 5423930 (1995-06-01), Kishishita
patent: 5461535 (1995-10-01), Kishishita et al.
patent: 5867360 (1999-02-01), Kishishita et al.

Affiliated with

Also associated with

Rating

Variable capacitor does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Variable capacitor, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Variable capacitor will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-475395