Geometrical instruments
Patent
1983-03-11
1985-09-24
Weidenfeld, Gil
Geometrical instruments
339 14P, H01R 13453
Patent
active
045429464
ABSTRACT:
There is provided a power safety lock system including at least a pair of electrical contacts, one of which is adapted to be connected to ground and the other adapted to receive electrical energy. A slide bar including a substrate with a plurality of bore holes therein is adjacent to electrical contacts. A mating connector associated with the grounded electrical contact is adapted to press against an incline surface in one of the bore holes to move the slide bar from a first to a second position, thus enabling a second mating connector to make contact with the electrical contact which receives electrical energy.
REFERENCES:
patent: 3222631 (1965-12-01), Cohen
patent: 4113333 (1978-09-01), Horowitz
Austin Paula A.
Brand-Rex Company
Weidenfeld Gil
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