GB689454A - Improvements in snap action electric switches - Google Patents

Improvements in snap action electric switches

Info

Publication number
GB689454A
GB689454A GB219449A GB219449A GB689454A GB 689454 A GB689454 A GB 689454A GB 219449 A GB219449 A GB 219449A GB 219449 A GB219449 A GB 219449A GB 689454 A GB689454 A GB 689454A
Authority
GB
United Kingdom
Prior art keywords
blade
contact
snap action
electric switches
abutments
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
GB219449A
Inventor
Edmund Ramsay Wigan
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.)
National Research Development Corp UK
Original Assignee
National Research Development Corp UK
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 National Research Development Corp UK filed Critical National Research Development Corp UK
Priority to GB219449A priority Critical patent/GB689454A/en
Publication of GB689454A publication Critical patent/GB689454A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H5/00—Snap-action arrangements, i.e. in which during a single opening operation or a single closing operation energy is first stored and then released to produce or assist the contact movement
    • H01H5/04—Energy stored by deformation of elastic members
    • H01H5/18—Energy stored by deformation of elastic members by flexing of blade springs

Landscapes

  • Scissors And Nippers (AREA)
  • Switches Operated By Changes In Physical Conditions (AREA)
  • Knives (AREA)

Abstract

689,454. Snap-action switches. NATIONAL RESEARCH DEVELOPMENT CORPORATION. Jan. 11, 1950 [Jan. 26, 1949], No. 2194/49. Class 38 (v) A switch of the kind which comprises a blade compressed between abutments and carrying a contact or contacts situated not more than one quarter of the blade length away from the end of the blade remote from the point at which the operating force is applied, so that the contact pressure is thereby initially increased on such application, is modified in that the blade comprises two parts Dl, D2, mounted between abutments A, B and connected at P, so that when force is applied at X, part D1 snaps over and pulls the part D2 over by means of the part P. Abutment B may be rotatable and part P removed, and the upper part of A may be fixed, with the lower part of A rotatable. The contact C is arranged not more than one quarter of the blade length away from the abutment A. Specification 617,076 is referred to.
GB219449A 1949-01-26 1949-01-26 Improvements in snap action electric switches Expired GB689454A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB219449A GB689454A (en) 1949-01-26 1949-01-26 Improvements in snap action electric switches

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB219449A GB689454A (en) 1949-01-26 1949-01-26 Improvements in snap action electric switches

Publications (1)

Publication Number Publication Date
GB689454A true GB689454A (en) 1953-03-25

Family

ID=9735241

Family Applications (1)

Application Number Title Priority Date Filing Date
GB219449A Expired GB689454A (en) 1949-01-26 1949-01-26 Improvements in snap action electric switches

Country Status (1)

Country Link
GB (1) GB689454A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3094594A (en) * 1958-03-10 1963-06-18 James P Watson Snap acting mechanism

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3094594A (en) * 1958-03-10 1963-06-18 James P Watson Snap acting mechanism

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