Electrical switch

Details Electrical switch Electrical switch

1983-11-18

1985-06-18

Shepperd, John W.

Electricity: circuit makers and breakers

Plural switches control single circuit

2003022, 200340, H01H 1352, H01H 928

Patent

active

045242518

ABSTRACT:
An electrical switch for use as a safety switch for doors of lifts or elevators, the contact push rod of which is actuated by a switching roller when the roller is turned by means of an inserted actuating member. The switching roller comprises two axially spreadable switching roller portions that can be spread against the force of a spring by a pin specially provided for that purpose on the actuating member; if there is no pin on the actuating member, the roller strikes a stop before the switch is closed.

REFERENCES:
patent: 4395608 (1983-07-01), Eicker et al.

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