Electricity: circuit makers and breakers – Switch activation inhibitor – Removable actuator
Patent
1986-03-18
1987-09-22
Marcus, Stephen
Electricity: circuit makers and breakers
Switch activation inhibitor
Removable actuator
200 4304, 200153LA, H01H 2700
Patent
active
046956840
ABSTRACT:
An electric safety switch is provided which can only be actuated by means of a key carried by a movable part of an installation.
With its ramp the key causes retraction of a bolt which is carried by a dividing wall of a rotary sector and, with its finger, causes the angular driving of a groove of this dividing wall, this latter entirely covering the cam surfaces which actuate the switch pusher.
These switches are advantageously used in installations such as elevators and in safety circuits associated with cabinet doors.
REFERENCES:
patent: 4066856 (1978-01-01), Merkle
patent: 4395608 (1983-07-01), Eicker et al.
patent: 4454392 (1984-06-01), Rapp et al.
patent: 4524251 (1985-06-01), Schulz
Bochard Michel
Lafaye Michel
Drucker William A.
La Telemecanique Electrique
Marcus Stephen
Sholl Linda J.
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