Automobile brake vacuum switch

Details Automobile brake vacuum switch Automobile brake vacuum switch

1990-01-31

1991-04-09

Scott, J. R.

Electricity: circuit makers and breakers

Special application

Actuated concurrently with operation or use of art device

200 6186, 200306, H01H 314

Patent

active

050066773

ABSTRACT:
A housing includes a switch chamber and a plunger chamber communicating with the switch chamber. A plunger is slidable within the plunger chamber. Cam surfaces on the plunger operate electrical switches in the switch chamber. There is an axial channel in the plunger, and a slot through the plunger wall communicates with the channel. A vacuum passageway passes from one side of the housing, into the channel, and a solid extension of the passageway passes through the slot, and into a hole in the opposite wall of the housing. As the plunger moves in and out, the slot slides on the extension to guide to stabilize the plunger. A vent hole in the vacuum passageway opens into the channel. A sealing member slides in the channel along the axis of the plunger, alternately sealing and unsealing the vent hole as the plunger moves. A spring seated between the plunger and the sealing member permits the plunger to continue moving when the sealing member is seated in the passageway vent hole. A maze causes air passing through the switch chamber to the vent hole to turn and slow, thereby causing dust particles to settle out of it.

REFERENCES:
patent: 4302638 (1981-11-01), Fox et al.
patent: 4384176 (1983-05-01), Chestnut
patent: 4403123 (1983-09-01), Shek
patent: 4404439 (1983-09-01), Leighton
patent: 4439650 (1984-03-01), Brown

Affiliated with

Also associated with

Rating

Automobile brake vacuum 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 Automobile brake vacuum switch, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Automobile brake vacuum switch will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2036276