GB640097A - Improvements in snap-action electric switches - Google Patents

Improvements in snap-action electric switches

Info

Publication number
GB640097A
GB640097A GB2688047A GB2688047A GB640097A GB 640097 A GB640097 A GB 640097A GB 2688047 A GB2688047 A GB 2688047A GB 2688047 A GB2688047 A GB 2688047A GB 640097 A GB640097 A GB 640097A
Authority
GB
United Kingdom
Prior art keywords
spring
contact
button
fixed contact
centre
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
GB2688047A
Inventor
Thomas Dalziel
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.)
Simplex Electric Co Ltd
Original Assignee
Simplex Electric 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 Simplex Electric Co Ltd filed Critical Simplex Electric Co Ltd
Priority to GB2688047A priority Critical patent/GB640097A/en
Publication of GB640097A publication Critical patent/GB640097A/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

Landscapes

  • Thermally Actuated Switches (AREA)

Abstract

640,097. Thermal switches; press-button retractive switches. SIMPLEX ELECTRIC CO., Ltd. Oct. 7, 1947, No. 26880. [Class 38(v)] [Also in Group XXXII] The blade-spring of a dead-centre, snapaction switch comprises a flexible plate 15 and an S-shaped spring 16 secured together at each end, so that a fixed contact 23 and a contact 21 carried by the composite spring are normally in engagement. Depression of a button 39 acting on a bend 37 of the spring 16, initially urges the contacts together and then causes the spring 16 to snap over-centre against an adjustable stop 40, the contacts reclosing when the button is released. The stop 40 may be replaced by a second fixed contact. The spring 16 and plate 15 may take several forms (Figs. 4 to 9, not shown), (see Group XXXII). The fixed contact may be screwed into the upper limb of a terminal strip bent into " U " form, the lower limb having a clearance hole through which the contact passes. The terminal strip may also be in two parts, the contact being mounted on one part and the electrical connection being made to the other, resilient, part. The spring may be of bimetallic material or acted upon by a bimetal strip.
GB2688047A 1947-10-07 1947-10-07 Improvements in snap-action electric switches Expired GB640097A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2688047A GB640097A (en) 1947-10-07 1947-10-07 Improvements in snap-action electric switches

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2688047A GB640097A (en) 1947-10-07 1947-10-07 Improvements in snap-action electric switches

Publications (1)

Publication Number Publication Date
GB640097A true GB640097A (en) 1950-07-12

Family

ID=10250660

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2688047A Expired GB640097A (en) 1947-10-07 1947-10-07 Improvements in snap-action electric switches

Country Status (1)

Country Link
GB (1) GB640097A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2700079A (en) * 1950-09-16 1955-01-18 Haydon Switch Inc Snap action switch
US2840656A (en) * 1955-01-03 1958-06-24 Illinois Tool Works Low travel switch mechanism
DE1187293B (en) * 1955-01-03 1965-02-18 Illinois Tool Works Electrical snap-action switch with small switching travel
US3958091A (en) * 1975-04-02 1976-05-18 Attridge Ross R Snap-action electric switch, and contact blade structure therefor
US4764649A (en) * 1985-12-13 1988-08-16 Matsushita Electric Works, Ltd. Snap switch with a separate leaf spring biasing member
US5111010A (en) * 1989-03-31 1992-05-05 Kabushiki Kaisha Tokai-Rika-Denki-Seisakusho Switch device

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2700079A (en) * 1950-09-16 1955-01-18 Haydon Switch Inc Snap action switch
US2840656A (en) * 1955-01-03 1958-06-24 Illinois Tool Works Low travel switch mechanism
DE1187293B (en) * 1955-01-03 1965-02-18 Illinois Tool Works Electrical snap-action switch with small switching travel
US3958091A (en) * 1975-04-02 1976-05-18 Attridge Ross R Snap-action electric switch, and contact blade structure therefor
US4764649A (en) * 1985-12-13 1988-08-16 Matsushita Electric Works, Ltd. Snap switch with a separate leaf spring biasing member
US5111010A (en) * 1989-03-31 1992-05-05 Kabushiki Kaisha Tokai-Rika-Denki-Seisakusho Switch device

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