GB1411761A - Electric switches - Google Patents

Electric switches

Info

Publication number
GB1411761A
GB1411761A GB268372A GB268372A GB1411761A GB 1411761 A GB1411761 A GB 1411761A GB 268372 A GB268372 A GB 268372A GB 268372 A GB268372 A GB 268372A GB 1411761 A GB1411761 A GB 1411761A
Authority
GB
United Kingdom
Prior art keywords
switch
contact
spring
jan
compressed
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
GB268372A
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.)
Plessey Co Ltd
Original Assignee
Plessey 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 Plessey Co Ltd filed Critical Plessey Co Ltd
Priority to GB268372A priority Critical patent/GB1411761A/en
Publication of GB1411761A publication Critical patent/GB1411761A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/12—Contacts characterised by the manner in which co-operating contacts engage
    • H01H1/14—Contacts characterised by the manner in which co-operating contacts engage by abutting
    • H01H1/24—Contacts characterised by the manner in which co-operating contacts engage by abutting with resilient mounting
    • H01H1/242—Contacts characterised by the manner in which co-operating contacts engage by abutting with resilient mounting the contact forming a part of a coil spring

Abstract

1411761 Retractive switches PLESSEY CO Ltd 11 Jan 1973 [19 Jan 1972] 2683/72 Heading H1N A push-button switch has a coiled biasing spring 3 constituting the moving contact and comprising two parts having different diameters, the larger diameter part 6 being arranged to be compressed upon depression of the button 2 with relatively little compression of the smaller diameter part 4 until the latter engages with a fixed contact member 12 to effect contacts closure whereupon the part 4 is compressed. As shown the switch comprises an insulating body 1 in which contact member 12 is secured by a splined part 13, the end 11 of member 12 being threaded to take a nut 18 for holding the switch on a printed-circuit board 17. The end 8 of the spring 3 extends near the base of the switch to form a terminal connection 10. On contact closure the spring part 4 moves a short distance down the conical tip 16 of member 12 due to compressive forces and is also rotated slightly by torsional forces, thus effecting cleaning for low contact resistance.
GB268372A 1972-01-19 1972-01-19 Electric switches Expired GB1411761A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB268372A GB1411761A (en) 1972-01-19 1972-01-19 Electric switches

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB268372A GB1411761A (en) 1972-01-19 1972-01-19 Electric switches

Publications (1)

Publication Number Publication Date
GB1411761A true GB1411761A (en) 1975-10-29

Family

ID=9743946

Family Applications (1)

Application Number Title Priority Date Filing Date
GB268372A Expired GB1411761A (en) 1972-01-19 1972-01-19 Electric switches

Country Status (1)

Country Link
GB (1) GB1411761A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0012279A1 (en) * 1978-12-14 1980-06-25 Siemens Aktiengesellschaft Push-button switch, particularly for keyboards of typewriters and similar devices
DE3013115A1 (en) * 1980-04-03 1981-10-08 Schoeller & Co Elektrotechnische Fabrik Gmbh & Co, 6000 Frankfurt ELECTRIC KEY SWITCH
US4313685A (en) * 1978-12-14 1982-02-02 Siemens Aktiengesellschaft Push-button switch, particularly for keyboards of typewriters and similar devices

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0012279A1 (en) * 1978-12-14 1980-06-25 Siemens Aktiengesellschaft Push-button switch, particularly for keyboards of typewriters and similar devices
US4313685A (en) * 1978-12-14 1982-02-02 Siemens Aktiengesellschaft Push-button switch, particularly for keyboards of typewriters and similar devices
DE3013115A1 (en) * 1980-04-03 1981-10-08 Schoeller & Co Elektrotechnische Fabrik Gmbh & Co, 6000 Frankfurt ELECTRIC KEY SWITCH
FR2480027A1 (en) * 1980-04-03 1981-10-09 Schoeller & Co Elektrotech ELECTRIC SWITCH WITH TOUCH AND KEYBOARD EQUIPPED WITH SUCH SWITCHES

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees