Safety switch

Details Safety switch Safety switch

2005-06-07

2005-06-07

Donovan, Lincoln (Department: 2832)

Electricity: circuit makers and breakers

Electric switch details

Actuators

C200S339000, C200S553000

Reexamination Certificate

active

06903290

ABSTRACT:
A safety switch includes an activation key housed in a casing, a pair of contact-holding elements, and a triad of electric terminals. The contact-holding elements oscillate between a passive position and an active position, the positions being imposed by a corresponding position of the activation key. The contact-holding elements are mutually electrically connected through conductive elements that, when operation of the switch takes place in a condition of failure, can move with respect to one another for relative displacement of mating surfaces to determine a loss of contact between the contact-holding elements.

REFERENCES:
patent: 5304753 (1994-04-01), Parrish et al.
patent: 5495081 (1996-02-01), Ipcinski
patent: 5767465 (1998-06-01), Fulton et al.
patent: 6028274 (2000-02-01), Harris
patent: 12 56 763 (1967-12-01), None
patent: 2298176 (1976-08-01), None
patent: 1168567 (1969-10-01), None

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