GB840034A - Improvements in and relating to electric circuit breakers - Google Patents

Improvements in and relating to electric circuit breakers

Info

Publication number
GB840034A
GB840034A GB33749/56A GB3374956A GB840034A GB 840034 A GB840034 A GB 840034A GB 33749/56 A GB33749/56 A GB 33749/56A GB 3374956 A GB3374956 A GB 3374956A GB 840034 A GB840034 A GB 840034A
Authority
GB
United Kingdom
Prior art keywords
latch
levers
contacts
springs
balls
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
GB33749/56A
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.)
Mechanical Products Inc
Original Assignee
Mechanical Products Inc
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
Priority claimed from US569375A external-priority patent/US2831086A/en
Application filed by Mechanical Products Inc filed Critical Mechanical Products Inc
Publication of GB840034A publication Critical patent/GB840034A/en
Expired legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02B—HYDRAULIC ENGINEERING
    • E02B3/00—Engineering works in connection with control or use of streams, rivers, coasts, or other marine sites; Sealings or joints for engineering works in general
    • E02B3/20—Equipment for shipping on coasts, in harbours or on other fixed marine structures, e.g. bollards
    • E02B3/26—Fenders
    • 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
    • H01H71/1045—Multiple circuits-breaker, e.g. for the purpose of dividing current or potential drop
    • 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
    • H01H73/22—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 electrothermal release and no other automatic release
    • H01H73/30—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 electrothermal release and no other automatic release reset by push-button, pull-knob or slide
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A30/00—Adapting or protecting infrastructure or their operation
    • Y02A30/30—Adapting or protecting infrastructure or their operation in transportation, e.g. on roads, waterways or railways

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Ocean & Marine Engineering (AREA)
  • Environmental & Geological Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Breakers (AREA)
  • Body Structure For Vehicles (AREA)

Abstract

840,034. Automatic circuit - breakers; mechanical switches. MECHANICAL PRODUCTS Inc. Nov. 5, 1956 [March 5, 1956], No. 33749/56. Class 38 (5). An automatic circuit-breaker has a moving contact assembly which is normally latched by a current-responsive bimetal or trimetal latch 21 to an actuating- member 37 normally retained in the closed position by a second mechanical latch comprising an apertured fixed cage 65 housing balls 63 which are urged into engagement with a detent 61 in the member 37 by pivoted levers 67. Springs 25, 73 are connected between the levers 67 and pivoted contact carrying levers 17. When an overload occurs, the latch 21 disengages from an abutment 34 on the member 37 and permits the springs 25, 73 to pull down the moving contact assembly to open contacts 13, 15. The opening of the contacts causes the springs 25, 73 to return to their unstressed state so removing the spring bias from the levers 67 and balls 63. This permits a spring 51 to move the actuating member 37 down into the off position, so enabling the latch 21 to reset on cooling. The contacts may then be reclosed by pushing the knob 54. The contacts may be opened manually by pulling the knob 54 so that the detent 61 cams the balls 63 outwardly from the member 37 to permit the member 37 to move to its off position without disengaging the latch 21. Specification 756,764 is referred to.
GB33749/56A 1956-03-05 1956-11-05 Improvements in and relating to electric circuit breakers Expired GB840034A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US569375A US2831086A (en) 1956-03-05 1956-03-05 Electric switch incorporating an automatic circuit breaker
ES860064X 1958-10-21

Publications (1)

Publication Number Publication Date
GB840034A true GB840034A (en) 1960-07-06

Family

ID=26154285

Family Applications (2)

Application Number Title Priority Date Filing Date
GB33749/56A Expired GB840034A (en) 1956-03-05 1956-11-05 Improvements in and relating to electric circuit breakers
GB35671/59A Expired GB860064A (en) 1956-03-05 1959-10-21 Improvements in or relating to fenders

Family Applications After (1)

Application Number Title Priority Date Filing Date
GB35671/59A Expired GB860064A (en) 1956-03-05 1959-10-21 Improvements in or relating to fenders

Country Status (5)

Country Link
CH (2) CH348998A (en)
DE (1) DE1104039B (en)
FR (2) FR1163964A (en)
GB (2) GB840034A (en)
NL (1) NL95706C (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1226704B (en) * 1962-06-12 1966-10-13 Lloyd Dynamowerke G M B H Compensated DC machine with reversible poles and split housing
US3523168A (en) * 1968-07-26 1970-08-04 Robertshaw Controls Co Pushbutton switch construction with positive plunger safety stop carried by a casing

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT130129B (en) * 1930-03-04 1932-11-10 Stotz Kontakt Gmbh Overcurrent or installation circuit breaker.
FR789213A (en) * 1935-02-06 1935-10-25 Multipolar automatic circuit breaker
NL170063C (en) * 1952-02-05 Hochtemperatur Kernkraftwerk NUCLEAR REACTOR WITH SPHERE FUEL ELEMENTS AND WITH ABSORPTION BARS.
US2773949A (en) * 1952-10-24 1956-12-11 Ite Circuit Breaker Ltd Circuit breaker tie bar

Also Published As

Publication number Publication date
DE1104039B (en) 1961-04-06
FR1203530A (en) 1960-01-19
FR1163964A (en) 1958-10-03
CH357791A (en) 1961-10-31
CH348998A (en) 1960-09-30
GB860064A (en) 1961-02-01
NL211914A (en) 1960-05-16
NL95706C (en) 1960-10-15

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