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GB798436A - Improvements in or relating to snap-action electric switches - Google Patents

Improvements in or relating to snap-action electric switches

Info

Publication number
GB798436A
GB798436A GB5551/55A GB555155A GB798436A GB 798436 A GB798436 A GB 798436A GB 5551/55 A GB5551/55 A GB 5551/55A GB 555155 A GB555155 A GB 555155A GB 798436 A GB798436 A GB 798436A
Authority
GB
United Kingdom
Prior art keywords
capsule
disc
group xxxvii
soldered
fill
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
GB5551/55A
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.)
Cutler Hammer Inc
Original Assignee
Cutler Hammer 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
Application filed by Cutler Hammer Inc filed Critical Cutler Hammer Inc
Publication of GB798436A publication Critical patent/GB798436A/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
    • 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
    • H01H77/06—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 electromagnetic opening
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/30—Means for extinguishing or preventing arc between current-carrying parts
    • H01H9/34—Stationary parts for restricting or subdividing the arc, e.g. barrier plate
    • H01H9/342—Venting arrangements for arc chutes

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Micromachines (AREA)
  • Thermally Actuated Switches (AREA)
  • Breakers (AREA)

Abstract

798,436. Temperature-responsive actuating-elements. CUTLER-HAMMER, Inc. Feb. 24, 1955 [March 1, 1954], No. 5551/55. Class 64(2) [Also in Group XXXVII] In a thermal switch (see Group XXXVII) the temperature-responsive element comprises a capsule 21 containing a thermometric fill and comprising a lower rigid disc 21a and an upper flexible disc 21b which snaps over when the fill boils due to the passage of current through the capsule. The left hand edge of the capsule is soldered to a terminal 13a and the disc 21b bears against a pin 31a. The discs are provided with offset bosses 21c, 21d which minimize creep and so allow sudden action. The capsule is acted upon by a spring 24 and is provided with flanges between which is soldered an actuating blade of the switch. Specifications 656,721 and 777,810 [Group XXXVII] are referred to.
GB5551/55A 1954-03-01 1955-02-24 Improvements in or relating to snap-action electric switches Expired GB798436A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US413363A US2813946A (en) 1954-03-01 1954-03-01 Circuit breakers

Publications (1)

Publication Number Publication Date
GB798436A true GB798436A (en) 1958-07-23

Family

ID=23636946

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5551/55A Expired GB798436A (en) 1954-03-01 1955-02-24 Improvements in or relating to snap-action electric switches

Country Status (2)

Country Link
US (1) US2813946A (en)
GB (1) GB798436A (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3241381A (en) * 1962-02-28 1966-03-22 Cutler Hammer Inc Motion transmitting mechanism
US3316375A (en) * 1964-10-12 1967-04-25 Robertshaw Controls Co Control device and parts therefor or the like
GB1272066A (en) * 1968-05-29 1972-04-26 Otehall Ltd Improvements in or relating to electric switches
US3828151A (en) * 1973-05-25 1974-08-06 Amp Inc Snap switch actuator
GB1490995A (en) * 1974-04-19 1977-11-09 Licon Electronics Ltd Electric switches
US4048607A (en) * 1976-06-24 1977-09-13 Amerace Corporation Circuit breaker
US4983794A (en) * 1988-07-26 1991-01-08 Kabushiki Kaisha Tokai Rika Denki Seisakusho Snap action switching device

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE400499C (en) * 1924-08-21 Voigt & Haeffner Akt Ges Hot wire relay
US1102566A (en) * 1912-01-29 1914-07-07 Lewis S Besley Thermostatic circuit-controller.
US1959205A (en) * 1931-10-19 1934-05-15 Signal Engineering & Mfg Co Electrical circuit controlling mechanism
US2125627A (en) * 1934-06-20 1938-08-02 Wilcolator Co Thermostat for electric ranges
US2144120A (en) * 1936-06-19 1939-01-17 Vapor Car Heating Co Inc Thermal contactor
US2228956A (en) * 1938-06-01 1941-01-14 William M Pearson Circuit breaker
US2365120A (en) * 1943-01-04 1944-12-12 Thomas W Thirlwell Electric switch
FR910895A (en) * 1944-12-21 1946-06-20 Ct D Etudes Henry Le Chatelier Electric current switch system with thermostat
US2446961A (en) * 1945-07-03 1948-08-10 British Thermostat Co Ltd Thermostatically operated electrical switching device
US2486033A (en) * 1946-02-06 1949-10-25 First Ind Corp Snap acting device
US2484932A (en) * 1946-11-29 1949-10-18 Cutler Hammer Inc Vapor pressure type thermal power element
US2597759A (en) * 1949-05-26 1952-05-20 Starkey Clifford Victor Thermal overload cutout for electrical apparatus
US2700709A (en) * 1950-02-08 1955-01-25 Fasco Industries Thermostatic electromagnetic switch assembly
US2663777A (en) * 1952-03-12 1953-12-22 Cutler Hammer Inc Circuit breaker
US2737555A (en) * 1953-05-12 1956-03-06 Milwaukee Gas Specialty Co Thermostat

Also Published As

Publication number Publication date
US2813946A (en) 1957-11-19

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