Electricity: circuit makers and breakers – Snap – Double snap
Reexamination Certificate
2006-08-08
2006-08-08
Friedhofer, Michael (Department: 2832)
Electricity: circuit makers and breakers
Snap
Double snap
C200S405000
Reexamination Certificate
active
07087851
ABSTRACT:
The invention relates to a microswitch comprising a housing, a switching plunger arranged in displaced relationship with the center of said housing and projecting from said housing, contacts which are arranged on the housing side located opposite the switching plunger, and a contact bridge which is adapted to be transferred from a first to a second switching position through the switching plunger and a bistable spring, said switching plunger being provided with a cantilevered arm which projects on one side and on the projecting end of which a downholder is provided for positive opening of the contact bridge. In order to improve a microswitch of the type mentioned at the beginning in such a way that its overall size can be reduced still further and that a reliable positive opening operation will take place, the present invention is so conceived that, on the switching plunger side located opposite the cantilevered arm, a support projection is arranged, which acts on a resilient part of the spring in spaced relationship with the switching plunger, in such a way that, when the switching plunger is pressed down, a moment (M) will be applied via the support projection to the cantilevered arm of the switching plunger in the opening direction of the contact bridge.
REFERENCES:
patent: 3187132 (1965-06-01), Dennison
patent: 4931605 (1990-06-01), Zoller
patent: 6255611 (2001-07-01), Chou
patent: 0618601 (1994-10-01), None
patent: 0618603 (1994-10-01), None
patent: 2716746 (1995-09-01), None
Friedhofer Michael
Klaus Lisa
Schaltbau GmbH
Townsend and Townsend and Crew
LandOfFree
Microswitch does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Microswitch, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Microswitch will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3620405