PORTABLE RACKING DEVICE WITH SLIDING ANTI-TORQUE TANG FOR DRAWOUT POWER CIRCUIT BREAKERS
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United States of America Patent
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Issued Date -
Oct 3, 2013
app pub date -
Mar 21, 2013
filing date -
Mar 30, 2012
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A portable motorized device for remotely inserting or removing (racking) screws for draw-out power circuit breakers. Many different designs of draw-out circuit breakers may be connected or disconnected from an energized bus by a human operator cranking a jack screw mechanism that is part of the breaker. The device herein described provides a portable, motorized device that can be hand-carried to the work location and affixed to the circuit breaker without the need of any modification to the breaker or its enclosure. The torque that is required to operate the breaker's racking mechanism is provided by an electrically powered gear motor. Attached to the output shaft of the gear motor is a socket that engages the circuit breaker racking screw. Anti-torque is provided by a portion of the portable racking device that engages the racking screw ‘window’. The friction created by the torque of the socket against the racking screw and the racking device engaging the racking screw window.
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