Rotary switch

Details Rotary switch Rotary switch

1989-01-25

1990-01-30

Scott, J. R.

Electricity: circuit makers and breakers

Multiple circuit control

Pivoted contact

200 11J, H01H 2162, B62D 6500

Patent

active

048975133

ABSTRACT:
A rotary switch has a synthetic resin substrate on the surface of which a plurality of fixed contacts are arranged in a concentric fashion, and a holder rotatable over the expanse of the substrate, including the fixed contacts. A conductor plate supported to the holder is formed with swelled contacts which act as movable contacts. A rib is positioned so that the conductor plate contacts the rib when the switch is in the off position, thereby lifting the movable contacts from the surface of the substrate. A substantially hour glass shaped slit is used to separate and insulate the fixed contacts. The wide portions of the slit act as reservoirs for conductive wearing powder, thereby delaying a short circuit due to wearing powder accumulation. Thus, the switch alleviates wear of the movable contacts and enhances switching accuracy.

REFERENCES:
patent: 3255319 (1966-06-01), Paine
patent: 3596013 (1971-07-01), Pihl
patent: 3602656 (1971-08-01), Anderson et al.
patent: 3939313 (1976-02-01), Hagashi et al.
patent: 3944761 (1976-03-01), Nicholl et al.

Affiliated with

Also associated with

Rating

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

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1924568