GB749716A - Improvements in or relating to thermally-controlled electric switches - Google Patents

Improvements in or relating to thermally-controlled electric switches

Info

Publication number
GB749716A
GB749716A GB27690/53A GB2769053A GB749716A GB 749716 A GB749716 A GB 749716A GB 27690/53 A GB27690/53 A GB 27690/53A GB 2769053 A GB2769053 A GB 2769053A GB 749716 A GB749716 A GB 749716A
Authority
GB
United Kingdom
Prior art keywords
plunger
ball
contacts
thermally
relating
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
GB27690/53A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of GB749716A publication Critical patent/GB749716A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H77/00—Protective overload circuit-breaking switches operated by excess current and requiring separate action for resetting
    • H01H77/02—Protective overload circuit-breaking switches operated by excess current and requiring separate action for resetting in which the excess current itself provides the energy for opening the contacts, and having a separate reset mechanism
    • H01H77/04—Protective overload circuit-breaking switches operated by excess current and requiring separate action for resetting in which the excess current itself provides the energy for opening the contacts, and having a separate reset mechanism with electrothermal opening
    • 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

  • Thermally Actuated Switches (AREA)

Abstract

749,716. Thermal switches; snap-action switches. TAYLOR, E. H. Sept. 23, 1954 [Oct. 8. 1953], No. 27690/53. Class 38(5) The bimetal element 2 of Specifications 600,055 or 657,434, carries a contact 15 cooperating with fixed contact 8. The end of contact - carrying tongue 4b engages a ball 14 located in guides or recesses in a frame 1. The ball also engages a plunger 11 which is biased upwards by a spring 13. When the contacts are closed, the ball 14 is forced against a necked part of the plunger. Heating of the bimetal causes the contacts to separate and the ball is forced to the right over the end of the tongue 4b by upward movement of the plunger by the spring. The contacts can only be reclosed by depression of the. plunger to allow the ball to re-engage the necked part of the plunger.
GB27690/53A 1953-10-08 1953-10-08 Improvements in or relating to thermally-controlled electric switches Expired GB749716A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB328871X 1953-10-08
GB230954X 1954-09-23

Publications (1)

Publication Number Publication Date
GB749716A true GB749716A (en) 1956-05-30

Family

ID=26256325

Family Applications (1)

Application Number Title Priority Date Filing Date
GB27690/53A Expired GB749716A (en) 1953-10-08 1953-10-08 Improvements in or relating to thermally-controlled electric switches

Country Status (5)

Country Link
US (1) US2755357A (en)
CH (1) CH328871A (en)
DE (1) DE1027288B (en)
FR (1) FR1115586A (en)
GB (1) GB749716A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3135848A (en) * 1960-11-21 1964-06-02 Mechanical Products Inc Convenience outlet and circuit breaker device

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE661395C (en) * 1936-09-21 1938-06-17 Stotz Kontakt Gmbh Self-contained installation switch, the movable switching contact of which is carried by a bimetallic strip clamped on one side
DE670790C (en) * 1936-09-23 1939-01-25 Stotz Kontakt Gmbh Thermal self-switch
US2318076A (en) * 1940-05-31 1943-05-04 Westinghouse Electric & Mfg Co Motor protective device
US2326529A (en) * 1942-02-02 1943-08-10 Monitor Controller Co Overload cutout for electric circuits
US2404352A (en) * 1944-01-07 1946-07-23 Westinghouse Electric Corp Thermostatic overload relay

Also Published As

Publication number Publication date
DE1027288B (en) 1958-04-03
CH328871A (en) 1958-03-31
FR1115586A (en) 1956-04-26
US2755357A (en) 1956-07-17

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