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公开(公告)号：US3443258A
公开(公告)日：1969-05-06
申请号：US3443258D
申请日：1966-11-10
Applicant: SQUARE D CO
Inventor： DUNHAM ROBERT W , VYSKOCIL CHARLES D
CPC classification number: H01H71/04 , H01H71/524
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Patent Agency Ranking
公开(公告)号：US3401363A
公开(公告)日：1968-09-10
申请号：US59351866
申请日：1966-11-10
Applicant: SQUARE D CO
Inventor： VYSKOCIL CHARLES D , DUNHAM ROBERT W
CPC classification number: H01H71/04 , H01H71/524
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公开(公告)号：US3614697A
公开(公告)日：1971-10-19
申请号：US3614697D
申请日：1970-07-20
Applicant: SQUARE D CO
Inventor： DUNHAM ROBERT W , VYSKOCIL CHARLES D
Abstract: A circuit breaker is provided with a current-limiting fuse mounted in a removable fuse holder and electrically connected in series with the circuit breaker contacts. A self-biasing mechanical interlock member prevents insertion or removal of the fuse unless an operating lever is in the OFF position. An indicator lamp is connected across the fuse and circuit breaker contacts to indicate an open circuit caused either by blowing of the fuse or tripping of the circuit breaker. A switch in the energizing circuit of the lamp prevents lighting thereof when the operating lever is in the OFF position. The interlock member carries current to the lamp and serves as a movable contact for the switch.
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4.发明授权Molded-case circuit breaker with manual tripping means externally accessible only by a tool 失效具有手动操作的模制电路断路器只能由工具直接访问
公开(公告)号：US3480890A
公开(公告)日：1969-11-25
申请号：US3480890D
申请日：1968-03-26
Applicant: SQUARE D CO
Inventor： LAYTON BERYL W , DUNHAM ROBERT W
CPC classification number: H01H71/128
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公开(公告)号：US3354357A
公开(公告)日：1967-11-21
申请号：US60336766
申请日：1966-12-20
Applicant: SQUARE D CO
Inventor： JORGENSEN GEORGE N , STANBACK HARRIS I , DUNHAM ROBERT W
CPC classification number: H02B1/056 , H01R9/2458
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公开(公告)号：US3283216A
公开(公告)日：1966-11-01
申请号：US26379563
申请日：1963-03-08
Applicant: SQUARE D CO
Inventor： DUNHAM ROBERT W
CPC classification number: H01H71/1009 , H01H71/082
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