Shorting stick for safing of high-voltage equipment

Electrical transmission or interconnection systems – Personnel safety or limit control features

Reexamination Certificate

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Details

C361S222000

Reexamination Certificate

active

07834487

ABSTRACT:
An electrical shorting stick and method of using it. The apparatus and method allow the user to work on or about high-voltage equipment at tremendously reduced risk of accidental electrocution. The apparatus permits the user to secure a reliable short-circuit of the equipment to the absolute ground, so that current cannot be directed through the bodies of the service crew. The apparatus is placed into contact with the equipment of interest. While in contact with the equipment, the apparatus is manipulated by the user to safely discharge to absolute ground all potentially hazardous electrical current. The apparatus has a handle assembly movable upon a main road assembly. When the handle assembly is placed into a first position, current is directed from the equipment to the absolute ground via the apparatus including a resistor. The handle assembly is shifted to a second position, in which current is directed through the apparatus, but bypassing the resistor, in a conductive circuit directly to absolute ground, thus providing a safe “hard” grounding of the equipment of interest.

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patent: 6943301 (2005-09-01), Lee
patent: 7156354 (2007-01-01), Shepherd et al.
patent: 2003/0015330 (2003-01-01), Wood et al.

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