Safety switch

Details Safety switch Safety switch

2011-08-16

2011-08-16

Figueroa, Felix O (Department: 2833)

Electricity: circuit makers and breakers

Switch activation inhibitor

Removable actuator

C200S334000, C200S324000

Reexamination Certificate

active

07999200

ABSTRACT:
A safety switch is described in which a switching contact in a lock mechanism switches between an open and closed condition. Switching is coupled to a lock member moveable between a locked position, locking a drive cam, and an unlocked position, allowing the cam to rotate. A link member, cooperating with the lock member, switches between open and closed conditions of normally-open and normally-closed switching contacts, indicating movement of the lock member between the locked position and the unlocked position. By monitoring the open and closed conditions of the normally-open and normally-closed switching contacts, it is possible to determine the state of the lock member, i.e., whether it is in the locked position or in the unlocked position. It therefore can be determined whether the drive cam is in the locked or unlocked (i.e., free to rotate) state.

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Apr. 2004 Image of Solenoid Interlock AZM 161.
Apr. 2004 Schmersal, “Sicherheit im System: Schutz fuer Mensch und Maschine”, Hauptkatalog Sicberheitstechnik, Ausgabe 02, Funktionsbeschreibung AZM 161, p. 1-20 und 1-21.

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