GB657130A - Improvements in and relating to snap action electric switches - Google Patents

Improvements in and relating to snap action electric switches

Info

Publication number
GB657130A
GB657130A GB25634/48A GB2563448A GB657130A GB 657130 A GB657130 A GB 657130A GB 25634/48 A GB25634/48 A GB 25634/48A GB 2563448 A GB2563448 A GB 2563448A GB 657130 A GB657130 A GB 657130A
Authority
GB
United Kingdom
Prior art keywords
spring
frame
welded
snap
oct
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
GB25634/48A
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.)
British Thomson Houston Co Ltd
Original Assignee
British Thomson Houston Co 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
Application filed by British Thomson Houston Co Ltd filed Critical British Thomson Houston Co Ltd
Publication of GB657130A publication Critical patent/GB657130A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
    • H01H13/02—Details
    • H01H13/26—Snap-action arrangements depending upon deformation of elastic members
    • H01H13/36—Snap-action arrangements depending upon deformation of elastic members using flexing of blade springs
    • 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00—Machine element or mechanism
    • Y10T74/18—Mechanical movements
    • Y10T74/18888—Reciprocating to or from oscillating
    • Y10T74/18896—Snap action
    • Y10T74/18904—Plate spring

Landscapes

  • Push-Button Switches (AREA)
  • Mechanisms For Operating Contacts (AREA)

Abstract

657,130. Retractive switches; snap-action switches. BRITISH THOMSON-HOUSTON CO., Ltd. Oct. 1, 1948, No. 25634. Convention date, Oct. 7, 1947. [Class 38(v)] A snap-action switch comprises a flanged metal frame 3 having reversely-bent ends 10, 12 supporting under compression a leaf spring 1 welded at 4 to the end 10 but slidable in the end 12. The spring 1 is slipped into the frame, from the centre, through a slot 19 until a contact 2 thereon abuts the frame shoulders 17 and is then moved oppositely into the end 12. The assembly is held in a fixture to compress the spring 1 while it is welded at the end 10. The opposed frame shoulders 17, 18 are accurately formed and projections 14, 15 serve to centralize the spring. The frame 3 is assembled in a casing comprising a base 20 and cover 21, the base 20 supporting contacts 23, 24 and a plunger 27 on a pivoted arm 28. The spring 1 is biassed by a spring 29 so that normally contacts 2, 23 engage. Alternatively, the spring 1 may be positively actuated in each direction. The Specification as open to inspection under Sect. 91 also describes an arrangement in which both ends of the leaf spring are welded to the frame, Fig. 4, (Cancelled), (not shown). This subject-matter does not annear in the Specification as accepted. Reference has been directed by the Comptroller to Specification 655,549.
GB25634/48A 1947-10-07 1948-10-01 Improvements in and relating to snap action electric switches Expired GB657130A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US778384A US2501497A (en) 1947-10-07 1947-10-07 Column spring snap switch

Publications (1)

Publication Number Publication Date
GB657130A true GB657130A (en) 1951-09-12

Family

ID=25113153

Family Applications (1)

Application Number Title Priority Date Filing Date
GB25634/48A Expired GB657130A (en) 1947-10-07 1948-10-01 Improvements in and relating to snap action electric switches

Country Status (2)

Country Link
US (1) US2501497A (en)
GB (1) GB657130A (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2658972A (en) * 1951-05-23 1953-11-10 Burroughs Adding Machine Co Mechanical bi-stable device
US3090846A (en) * 1960-08-04 1963-05-21 Tateishi Kazuma Tumbler switch
US3050599A (en) * 1960-10-10 1962-08-21 Cherry Electrical Prod Snap switch
FR1409877A (en) * 1964-07-22 1965-09-03 Renault Improvements to tachometric contactors
US3366756A (en) * 1966-04-04 1968-01-30 Norwalk Thermostat Company Snap action assembly
CN103561916B (en) 2011-08-01 2016-07-27 英格索尔-兰德公司 Including the device of power tool with non-link linear slide and the method being associated
WO2013019202A1 (en) 2011-08-01 2013-02-07 Ingersoll-Rand Company Battery pack release with tactile feedback for cordless power tools

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1976843A (en) * 1932-07-09 1934-10-16 Edison General Elec Appliance Electrical switch
US2074132A (en) * 1934-07-14 1937-03-16 Gen Electric Temperature control device
US2113227A (en) * 1935-07-22 1938-04-05 John S Bokeeno Thermostatic control
US2133309A (en) * 1937-01-12 1938-10-18 Schmldinger Joseph Circuit controlling mechanism
US2231463A (en) * 1937-08-13 1941-02-11 Emerson Electric Mfg Co Heat actuated switch
US2394121A (en) * 1944-06-28 1946-02-05 Ulanet Herman Resettable snap action thermal limit switch
US2373681A (en) * 1944-08-23 1945-04-17 Norman L Heikes Heavy duty snap switch
US2413130A (en) * 1945-03-01 1946-12-24 William J Aitken Snap action switch

Also Published As

Publication number Publication date
US2501497A (en) 1950-03-21

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