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Title: Circuit breaker lockout device

Abstract

An improved lockout assembly for locking a circuit breaker in a selected off or on position is provided. The lockout assembly includes a lock block and a lock pin. The lock block has a hollow interior which fits over the free end of a switch handle of the circuit breaker. The lock block includes at least one hole that is placed in registration with a hole in the free end of the switch handle. A lock tab on the lock block serves to align and register the respective holes on the lock block and switch handle. A lock pin is inserted through the registered holes and serves to connect the lock block to the switch handle. Once the lock block and the switch handle are connected, the position of the switch handle is prevented from being changed by the lock tab bumping up against a stationary housing portion of the circuit breaker. When the lock pin installed, an apertured-end portion of the lock pin is in registration with another hole on the lock block. Then a special scissors conforming to O.S.H.A. regulations can be installed, with one or more padlocks, on the lockout assembly to prevent removal of the lockmore » pin from the lockout assembly, thereby preventing removal of the lockout assembly from the circuit breaker.« less

Inventors:
 [1];  [2]
  1. New Kensington, PA
  2. North Huntingdon, PA
Issue Date:
Research Org.:
Westinghouse Electric Corp., Pittsburgh, PA (United States)
OSTI Identifier:
868550
Patent Number(s):
5165528
Assignee:
United States of America as represented by United States (Washington, DC)
Patent Classifications (CPCs):
H - ELECTRICITY H01 - BASIC ELECTRIC ELEMENTS H01H - ELECTRIC SWITCHES
DOE Contract Number:  
AC11-89PN38014
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
circuit; breaker; lockout; device; improved; assembly; locking; selected; position; provided; lock; block; hollow; interior; fits; free; switch; handle; placed; registration; tab; serves; align; register; respective; holes; inserted; registered; connect; connected; prevented; changed; bumping; stationary; housing; portion; installed; apertured-end; special; scissors; conforming; regulations; padlocks; prevent; removal; preventing; hollow interior; housing portion; circuit breaker; switch handle; lockout assembly; lock block; lockout device; improved lockout; /200/

Citation Formats

Kozlowski, Lawrence J, and Shirey, Lawrence A. Circuit breaker lockout device. United States: N. p., 1992. Web.
Kozlowski, Lawrence J, & Shirey, Lawrence A. Circuit breaker lockout device. United States.
Kozlowski, Lawrence J, and Shirey, Lawrence A. Wed . "Circuit breaker lockout device". United States. https://www.osti.gov/servlets/purl/868550.
@article{osti_868550,
title = {Circuit breaker lockout device},
author = {Kozlowski, Lawrence J and Shirey, Lawrence A},
abstractNote = {An improved lockout assembly for locking a circuit breaker in a selected off or on position is provided. The lockout assembly includes a lock block and a lock pin. The lock block has a hollow interior which fits over the free end of a switch handle of the circuit breaker. The lock block includes at least one hole that is placed in registration with a hole in the free end of the switch handle. A lock tab on the lock block serves to align and register the respective holes on the lock block and switch handle. A lock pin is inserted through the registered holes and serves to connect the lock block to the switch handle. Once the lock block and the switch handle are connected, the position of the switch handle is prevented from being changed by the lock tab bumping up against a stationary housing portion of the circuit breaker. When the lock pin installed, an apertured-end portion of the lock pin is in registration with another hole on the lock block. Then a special scissors conforming to O.S.H.A. regulations can be installed, with one or more padlocks, on the lockout assembly to prevent removal of the lock pin from the lockout assembly, thereby preventing removal of the lockout assembly from the circuit breaker.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1992},
month = {1}
}

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