GB642923A - Improvements in trip-free electric circuit breakers - Google Patents

Improvements in trip-free electric circuit breakers

Info

Publication number
GB642923A
GB642923A GB21964/47A GB2196447A GB642923A GB 642923 A GB642923 A GB 642923A GB 21964/47 A GB21964/47 A GB 21964/47A GB 2196447 A GB2196447 A GB 2196447A GB 642923 A GB642923 A GB 642923A
Authority
GB
United Kingdom
Prior art keywords
armature
finger
latch
trip
circuitbreaker
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
GB21964/47A
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.)
Heinemann Electric Co
Original Assignee
Heinemann Electric Co
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 Heinemann Electric Co filed Critical Heinemann Electric Co
Publication of GB642923A publication Critical patent/GB642923A/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
    • H01H71/1054—Means for avoiding unauthorised release
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H73/00—Protective overload circuit-breaking switches in which excess current opens the contacts by automatic release of mechanical energy stored by previous operation of a hand reset mechanism
    • H01H73/36—Protective overload circuit-breaking switches in which excess current opens the contacts by automatic release of mechanical energy stored by previous operation of a hand reset mechanism having electromagnetic release and no other automatic release
    • H01H73/38—Protective overload circuit-breaking switches in which excess current opens the contacts by automatic release of mechanical energy stored by previous operation of a hand reset mechanism having electromagnetic release and no other automatic release reset by lever
    • 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
    • H01H71/1054—Means for avoiding unauthorised release
    • H01H2071/1063—Means for avoiding unauthorised release making use of an equilibrating mass

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Breakers (AREA)

Abstract

642,923. Automatic circuit - breakers. HEINEMANN ELECTRIC CO. Aug. 8, 1947, No. 21964. Convention date, March 27, 1942. [Class 38 (v)] In a trip-free circuit-breaker the tripping mechanism is counterweighted to prevent accidental tripping due to shocks or dynamic action when the circuitbreaker is mounted in or on a moving vehicle or object. The figures show the application of the invention to a circuitbreaker of the construction described in Specifications 21963/47 and 22246/49, (both open to inspection under Sect. 91) in which the contacts 1, 6 are closed by means of a handle 9 acting through latched toggle links 10, 11, and may be tripped open by the armature 24 of an electromagnet 29, 30 acting by means of a finger 25 on the latch. The armature 24 with its finger 25 is dynamically balanced by means of counterweights 28, Fig. 3, which are rigidly fixed to the shaft 27 on which the armature is fixed. The latch has a counterweight 18, Fig. 5, to balance the weight of the latch arm 20 which is engaged by the finger 25.
GB21964/47A 1942-03-27 1947-08-08 Improvements in trip-free electric circuit breakers Expired GB642923A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US436467A US2427998A (en) 1942-03-27 1942-03-27 Circuit breaker

Publications (1)

Publication Number Publication Date
GB642923A true GB642923A (en) 1950-09-13

Family

ID=23732514

Family Applications (1)

Application Number Title Priority Date Filing Date
GB21964/47A Expired GB642923A (en) 1942-03-27 1947-08-08 Improvements in trip-free electric circuit breakers

Country Status (2)

Country Link
US (1) US2427998A (en)
GB (1) GB642923A (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2700711A (en) * 1951-12-14 1955-01-25 Heinemann Electric Co Automatic circuit breaker
US2824188A (en) * 1955-01-21 1958-02-18 Allard Instr Corp Magnetic device
US2866031A (en) * 1956-12-14 1958-12-23 Westinghouse Electric Corp Circuit breaker
US3079479A (en) * 1959-01-02 1963-02-26 Heinemann Electric Co Circuit breaker
US3083359A (en) * 1961-03-09 1963-03-26 Heinemann Electric Co Relays with indicator
US3388357A (en) * 1964-10-08 1968-06-11 Texas Instruments Inc Magnetic type circuit breaker

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US570212A (en) * 1896-10-27 Alexander jay wurts
US1701440A (en) * 1925-07-01 1929-02-05 Gen Electric Switch-latching mechanism
US1887274A (en) * 1925-08-19 1932-11-08 Walter S Mayer Combined switch and circuit breaker
US2067797A (en) * 1936-05-06 1937-01-12 Gen Electric Circuit breaker
US2178083A (en) * 1937-01-30 1939-10-31 Westinghouse Electric & Mfg Co Circuit controlling device

Also Published As

Publication number Publication date
US2427998A (en) 1947-09-23

Similar Documents

Publication Publication Date Title
GB827740A (en) Electric overload circuit breaker
GB611817A (en) Improvements in or relating to trip means for electric circuit breakers
GB1210566A (en) Automatic circuit-breaker
GB642923A (en) Improvements in trip-free electric circuit breakers
GB905773A (en) Electric circuit breaker
GB980010A (en) Improvements in electric circuit breakers
GB483204A (en) Improvements in or relating to electric switches having an automatic overload release or tripping device
GB982993A (en) Multipole circuit breaker units
GB926076A (en) Electric circuit breakers
GB576775A (en) Improvements in automatic circuit breakers
GB982994A (en) Multipole circuit breaker units
GB796080A (en) Improvements in or relating to automatic electric circuit breakers
GB783657A (en) Polyphase electrical circuit breaker with trip indicator
ES351371A1 (en) Electric circuit breakers
GB763747A (en) Electric circuit breaker operating mechanism
US2285040A (en) Circuit breaker
GB601844A (en) Improvements in or relating to electric circuit breakers and trip devices therefor
SU120238A2 (en) High-speed electrodynamic circuit breaker
GB964037A (en) Improvements in or relating to earth fault protective switches
GB634701A (en) Improvements in automatic electric circuit breakers having thermal overload release units
GB576872A (en) Means for operating trip-free electric circuit breakers
GB457427A (en) Improvements in or relating to electric circuit breakers
GB558878A (en) Improvements relating to electric circuit breakers having trip mechanism
GB389691A (en) Improvements in and relating to electric circuit breakers
GB1315610A (en) Automatic circuit breakers