Electricity: circuit makers and breakers – Switch activation inhibitor – Actuator locking device
Reexamination Certificate
2008-04-08
2008-04-08
Enad, Elvin (Department: 2832)
Electricity: circuit makers and breakers
Switch activation inhibitor
Actuator locking device
Reexamination Certificate
active
07355132
ABSTRACT:
A circuit breaker lock-off device is side-mounted to a circuit breaker case in a tenacious engagement. The lock-off device has a generally planar body carrying a lock-off arm pivotable in a plane parallel to the body to place an engagement tab extending therefrom into a position for preventing movement of the breaker handle without being physically attached to the breaker handle. The lock-off arm and the body further have complementary rings for accepting a padlock shackle in the locked off position. The invention allows a rugged lock-off accessory which is field installable and which can accommodate various breaker handle geometries.
REFERENCES:
patent: 4260861 (1981-04-01), DiMarco
patent: 5467622 (1995-11-01), Becker et al.
patent: 5817998 (1998-10-01), Siebels et al.
patent: 6791040 (2004-09-01), Puhalla et al.
patent: 6940027 (2005-09-01), Sipe
patent: 6992256 (2006-01-01), Wiley et al.
Rezac Willard J
Winter John M
Zubieta Antonio
Enad Elvin
Fishman M.
Square D Company
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