GB1523407A - Electric circuit breakers - Google Patents

Electric circuit breakers

Info

Publication number
GB1523407A
GB1523407A GB37315/76A GB3731576A GB1523407A GB 1523407 A GB1523407 A GB 1523407A GB 37315/76 A GB37315/76 A GB 37315/76A GB 3731576 A GB3731576 A GB 3731576A GB 1523407 A GB1523407 A GB 1523407A
Authority
GB
United Kingdom
Prior art keywords
electric circuit
arm
contact
circuit breakers
toggle linkage
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB37315/76A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Dorman Smith Switchgear Ltd
Original Assignee
Dorman Smith Switchgear Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Dorman Smith Switchgear Ltd filed Critical Dorman Smith Switchgear Ltd
Priority to GB37315/76A priority Critical patent/GB1523407A/en
Publication of GB1523407A publication Critical patent/GB1523407A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/10—Operating or release mechanisms
    • H01H71/50—Manual reset mechanisms which may be also used for manual release
    • H01H71/52—Manual reset mechanisms which may be also used for manual release actuated by lever
    • H01H71/522—Manual reset mechanisms which may be also used for manual release actuated by lever comprising a cradle-mechanism
    • H01H71/525—Manual reset mechanisms which may be also used for manual release actuated by lever comprising a cradle-mechanism comprising a toggle between cradle and contact arm and mechanism spring acting between handle and toggle knee

Landscapes

  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)

Abstract

1523407 Automatic circuit breakers DORMAN SMITH SWITCHGEAR Ltd 20 July 1977 [9 Sept 1976] 37315/76 Heading H1N An electric circuit breaker having a movable contact arm 21 coupled to a normally latched trip arm 29 by a toggle linkage 31, 34 and a pivoted dolly 25 connected by a spring 36 so as to be movable to straighten the toggle linkage for contact closure and to collapse the linkage for contact opening also has stationary abutment member 37 disposed so as to be abbutted by at least one link of the toggle linkage when the trip arm is released and present contactclosing movement of the contact arm if the dolley is moved to the on position.
GB37315/76A 1977-07-20 1977-07-20 Electric circuit breakers Expired GB1523407A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB37315/76A GB1523407A (en) 1977-07-20 1977-07-20 Electric circuit breakers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB37315/76A GB1523407A (en) 1977-07-20 1977-07-20 Electric circuit breakers

Publications (1)

Publication Number Publication Date
GB1523407A true GB1523407A (en) 1978-08-31

Family

ID=10395517

Family Applications (1)

Application Number Title Priority Date Filing Date
GB37315/76A Expired GB1523407A (en) 1977-07-20 1977-07-20 Electric circuit breakers

Country Status (1)

Country Link
GB (1) GB1523407A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4321440A (en) * 1980-02-19 1982-03-23 Mitsubishi Denki Kabushiki Kaisha Circuit breaker with extended contact separation after trip
EP0209055A2 (en) * 1985-07-18 1987-01-21 Westinghouse Electric Corporation Molded case circuit breaker with an improved operating mechanism having a pivot-transfer trip-free linkage
US4786771A (en) * 1986-09-09 1988-11-22 Mitsubishi Denki Kabushiki Kaisha Circuit interrupter with two stage stopper preventing bounce back
US5082996A (en) * 1988-11-18 1992-01-21 Fuji Electric Co., Ltd. Switching mechanism in circuit breaker

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4321440A (en) * 1980-02-19 1982-03-23 Mitsubishi Denki Kabushiki Kaisha Circuit breaker with extended contact separation after trip
EP0209055A2 (en) * 1985-07-18 1987-01-21 Westinghouse Electric Corporation Molded case circuit breaker with an improved operating mechanism having a pivot-transfer trip-free linkage
US4650944A (en) * 1985-07-18 1987-03-17 Westinghouse Electric Corp. Molded case circuit breaker with an improved operating mechanism having a pivot-transfer trip-free linkage
EP0209055A3 (en) * 1985-07-18 1988-01-27 Westinghouse Electric Corporation Molded case circuit breaker with an improved operating mechanism having a pivot-transfer trip-free linkage
US4786771A (en) * 1986-09-09 1988-11-22 Mitsubishi Denki Kabushiki Kaisha Circuit interrupter with two stage stopper preventing bounce back
US5082996A (en) * 1988-11-18 1992-01-21 Fuji Electric Co., Ltd. Switching mechanism in circuit breaker

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee