GB626335A - Improvements relating to thermally responsive electric circuit breakers - Google Patents

Improvements relating to thermally responsive electric circuit breakers

Info

Publication number
GB626335A
GB626335A GB32281/46A GB3228146A GB626335A GB 626335 A GB626335 A GB 626335A GB 32281/46 A GB32281/46 A GB 32281/46A GB 3228146 A GB3228146 A GB 3228146A GB 626335 A GB626335 A GB 626335A
Authority
GB
United Kingdom
Prior art keywords
contact
lever
spring
button
strip
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
GB32281/46A
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.)
Lucas Support Services Ltd
Original Assignee
Rotax 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
Priority to FR956967D priority Critical patent/FR956967A/fr
Application filed by Rotax Ltd filed Critical Rotax Ltd
Priority to GB32281/46A priority patent/GB626335A/en
Priority to US784357A priority patent/US2519629A/en
Publication of GB626335A publication Critical patent/GB626335A/en
Expired legal-status Critical Current

Links

Classifications

    • 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

Landscapes

  • Breakers (AREA)
  • Thermally Actuated Switches (AREA)

Abstract

626,335. Automatic circuit-breakers; snapaction switches. ROTAX, Ltd., and BOURNE, W. G. Oct. 30, 1946, No. 32281. [Class 38(v)] One contact of a thermally-actuated switch is carried by a snap-action lever mechanism operable by either of two pushbuttons and the other contact is carried by a thermally-deformable member, which can also effect separation of the contacts. The mechanism comprises a spring blade 3 with fixed and adjustable abutments 4, 5, respectively, and a contact-lever 9, pivoted at 8 and carrying a contact 10. A button 17, when depressed against a spring 18, bears on a cross-piece 19 of a lever 20, pivoted at 21, which pushes the spring 3 over-centre, the contact 10 being moved by a spring 11 acting on the lever 9 to engage a contact 25 on a bimetal strip 24. The contacts may be opened by depressing a button 16, thereby causing a spring arm 15 to bear on an extension of the spring 3 to throw it over-centre again, the contact 10 being returned by contact of lever 3 with an abutment 9<SP>1</SP> on the lever 9. Alternatively deformation of the strip 24 on overload causes the projection 13 on lever 9 to push the spring 3 into its upper position. The strip 24 may be heated by the current through it or by a series heater 27. The breaker may be short-circuited by a slight additional movement of the button 17 which causes a side arm of lever 20 to push a contact 30 into engagement with a fixed contact 31.
GB32281/46A 1946-10-30 1946-10-30 Improvements relating to thermally responsive electric circuit breakers Expired GB626335A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
FR956967D FR956967A (en) 1946-10-30
GB32281/46A GB626335A (en) 1946-10-30 1946-10-30 Improvements relating to thermally responsive electric circuit breakers
US784357A US2519629A (en) 1946-10-30 1947-11-06 Electric circuit breaker

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB32281/46A GB626335A (en) 1946-10-30 1946-10-30 Improvements relating to thermally responsive electric circuit breakers

Publications (1)

Publication Number Publication Date
GB626335A true GB626335A (en) 1949-07-13

Family

ID=10336170

Family Applications (1)

Application Number Title Priority Date Filing Date
GB32281/46A Expired GB626335A (en) 1946-10-30 1946-10-30 Improvements relating to thermally responsive electric circuit breakers

Country Status (3)

Country Link
US (1) US2519629A (en)
FR (1) FR956967A (en)
GB (1) GB626335A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2186742A (en) * 1986-02-18 1987-08-19 Colin Reginald Selley Ignition throw-off switch

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4510479A (en) * 1983-03-30 1985-04-09 Airpax Corporation PC-board mounted thermal breaker

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1315466A (en) * 1919-09-09 Electric switch
US1734557A (en) * 1925-10-05 1929-11-05 Kohler Co Automatic generating plant
US2420300A (en) * 1942-12-05 1947-05-13 Pierce John B Foundation Electric overload protective device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2186742A (en) * 1986-02-18 1987-08-19 Colin Reginald Selley Ignition throw-off switch

Also Published As

Publication number Publication date
FR956967A (en) 1950-02-10
US2519629A (en) 1950-08-22

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