Patent ID: 6867954
Filing Date: 2005-03-15
Classification: H01H,H02H

Abstract:
1. A reverse wiring protection device for GFCI receptacles, the device comprising: a pull rod, a latch, a balance frame, a trip coil, a contact switch (K) and a control circuit, wherein said pull rod has a flat on one end and a reset button on the other end with first axis, said pull rod associated with a reset spring, said flat having a first surface (L) and a second surface (R), said pull rod to move along said first axis between a first position and a second position, said pull rod to activate said contact switch (K) in said first position, the first surface (L) of said flat to contact with said latch in said second position to enable said pull rod to lift said balance frame through said latch; wherein said latch comprises a first part and a second part which are both in L-shaped 90 degrees, said balance frame to lift movable contacts against fixed contacts along said first axis; wherein said trip actuator comprises said trip coil, a trip spring, and a plunger to move along first axis perpendicularly, one end of said plunger coupled with said second part of said latch to activate said latch to move along a second axis between a lock position and an unlock position, in the lock position, said second part of said latch being able to block said flat to pass, in the unlock position, said plunger being able to overcome the bias force from said trip spring to make said latch activated and release the flat; said contact switch (K) to make said trip coil energized or de-energized; said control circuit to maintain the energized time for said trip coil, when it is energized by said contact switch, wherein said pull rod has a taper end on the end of flat to contact with said contact switch (K), the first part of said has a narrow slot, and the second part of said latch has a lock hole, of which one end is circular and the other end is rectilinear.