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GB774911A - Improvements in or relating to snap action electric switches - Google Patents

Improvements in or relating to snap action electric switches

Info

Publication number
GB774911A
GB774911A GB2002054A GB2002054A GB774911A GB 774911 A GB774911 A GB 774911A GB 2002054 A GB2002054 A GB 2002054A GB 2002054 A GB2002054 A GB 2002054A GB 774911 A GB774911 A GB 774911A
Authority
GB
United Kingdom
Prior art keywords
blade
bridge part
buckling
snap action
bimetallic
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
GB2002054A
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
Priority to GB2002054A priority Critical patent/GB774911A/en
Publication of GB774911A publication Critical patent/GB774911A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H37/00—Thermally-actuated switches
    • H01H37/02—Details
    • H01H37/32—Thermally-sensitive members
    • H01H37/52—Thermally-sensitive members actuated due to deflection of bimetallic element
    • H01H37/54—Thermally-sensitive members actuated due to deflection of bimetallic element wherein the bimetallic element is inherently snap acting
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H37/00—Thermally-actuated switches
    • H01H37/02—Details
    • H01H37/32—Thermally-sensitive members
    • H01H37/52—Thermally-sensitive members actuated due to deflection of bimetallic element
    • H01H37/54—Thermally-sensitive members actuated due to deflection of bimetallic element wherein the bimetallic element is inherently snap acting
    • H01H2037/5463—Thermally-sensitive members actuated due to deflection of bimetallic element wherein the bimetallic element is inherently snap acting the bimetallic snap element forming part of switched circuit
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H37/00—Thermally-actuated switches
    • H01H37/02—Details
    • H01H37/32—Thermally-sensitive members
    • H01H37/52—Thermally-sensitive members actuated due to deflection of bimetallic element
    • H01H37/54—Thermally-sensitive members actuated due to deflection of bimetallic element wherein the bimetallic element is inherently snap acting
    • H01H2037/5472—Thermally-sensitive members actuated due to deflection of bimetallic element wherein the bimetallic element is inherently snap acting having an omega form, e.g. the bimetallic snap element having a ring shape with a central tongue

Landscapes

  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Thermally Actuated Switches (AREA)

Abstract

774,911. Thermal switches; actuation of switches. TAYLOR, E. H. July 8, 1955 [July 8, 1954], No. 20020/54. Class 38(5) An electric switch comprises a multilegged snap action spring blade similar to that in Specification 657,434 and means for varying the buckling of the blade. As shown the blade is bimetallic and the bridge part 4 which connects the two outer legs is rigidly mounted at its two ends 8. The centre 24 of the bridge part is depressed by a threaded rod 13 on rotation of a knob 26 thereby varying the buckling of the blade and hence the temperature at which a moving contact 5 carried by the middle leg of the blade snaps into or out of engagement with a fixed contact. Modifications are described in which the middle of the bridge part is held and the outer ends move. If the blade is not bimetallic but merely resilient metal, the means acting on the bridge part to effect the variation in buckling move sufficiently to operate the switch. Specification 622,781 also is referred to.
GB2002054A 1954-07-08 1954-07-08 Improvements in or relating to snap action electric switches Expired GB774911A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2002054A GB774911A (en) 1954-07-08 1954-07-08 Improvements in or relating to snap action electric switches

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2002054A GB774911A (en) 1954-07-08 1954-07-08 Improvements in or relating to snap action electric switches

Publications (1)

Publication Number Publication Date
GB774911A true GB774911A (en) 1957-05-15

Family

ID=10139022

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2002054A Expired GB774911A (en) 1954-07-08 1954-07-08 Improvements in or relating to snap action electric switches

Country Status (1)

Country Link
GB (1) GB774911A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3105886A (en) * 1960-07-05 1963-10-01 Hadley K Burch Snap-acting mechanisms
DE1214296B (en) * 1963-11-20 1966-04-14 Dr Georg Hauser Electrical snap switch
DE1296245B (en) * 1962-03-15 1969-05-29 Otter Controls Ltd Electrical snap-action switch with a locking arm
GB2372421A (en) * 2001-02-19 2002-08-21 Strix Ltd Variable temperature control for a liquid heating vessel

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3105886A (en) * 1960-07-05 1963-10-01 Hadley K Burch Snap-acting mechanisms
DE1296245B (en) * 1962-03-15 1969-05-29 Otter Controls Ltd Electrical snap-action switch with a locking arm
DE1214296B (en) * 1963-11-20 1966-04-14 Dr Georg Hauser Electrical snap switch
GB2372421A (en) * 2001-02-19 2002-08-21 Strix Ltd Variable temperature control for a liquid heating vessel
GB2372421A8 (en) * 2001-02-19 2005-04-25 Strix Ltd Variable temperature control for a liquid heating vessel
GB2372421B (en) * 2001-02-19 2005-07-27 Strix Ltd Thermally sensitive controls

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