Capacitance type switch having dust-free interior

Details Capacitance type switch having dust-free interior Capacitance type switch having dust-free interior

1982-06-09

1984-06-05

Shepperd, John W.

Electricity: circuit makers and breakers

Electric switch details

Cases and bases

200159B, 200296, 2003022, H01H 904

Patent

active

044530617

ABSTRACT:
A novel capacitance type switch has a completely dust proof structure and ensures smooth switch operation. The switch comprises a stem supporting a movable contact and slidably inserted into a switch case; a plurality of holes formed in the switch case around the stem so as to permit air to pass therethrough into and out from the switch case; a cover surrounding the holes and in intimate contact with the switch case so that the inside of the switch case can communicate with the inside of the cover; the cover being made of a resilient material; and a dust filter made of a seal material interposed between the inside of the switch case and the atmosphere.

REFERENCES:
patent: 3478857 (1969-11-01), Linker
patent: 3898421 (1975-08-01), Suzumura
patent: 3904887 (1975-09-01), Hagelbarger
patent: 3965399 (1976-06-01), Walker, Jr. et al.
patent: 3995126 (1976-11-01), Larson
patent: 4033030 (1977-07-01), Robinson et al.
patent: 4072840 (1978-02-01), Daigle
patent: 4227238 (1980-10-01), Saito
patent: 4345119 (1982-08-01), Latasiewicz
patent: 4370533 (1983-01-01), Kamei et al.

Affiliated with

Also associated with

Rating

Capacitance type switch having dust-free interior does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Capacitance type switch having dust-free interior, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Capacitance type switch having dust-free interior will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1499309