GB1486051A - Electrical contact elements for keyswitches - Google Patents

Electrical contact elements for keyswitches

Info

Publication number
GB1486051A
GB1486051A GB1991675A GB1991675A GB1486051A GB 1486051 A GB1486051 A GB 1486051A GB 1991675 A GB1991675 A GB 1991675A GB 1991675 A GB1991675 A GB 1991675A GB 1486051 A GB1486051 A GB 1486051A
Authority
GB
United Kingdom
Prior art keywords
contact
disc
periphery
key
dimples
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
GB1991675A
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.)
ETCO SWITCHING SYST CO Ltd
Original Assignee
ETCO SWITCHING SYST 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 ETCO SWITCHING SYST CO Ltd filed Critical ETCO SWITCHING SYST CO Ltd
Priority to GB1991675A priority Critical patent/GB1486051A/en
Publication of GB1486051A publication Critical patent/GB1486051A/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
    • H01H13/48—Snap-action arrangements depending upon deformation of elastic members using buckling of disc springs

Abstract

1486051 Retractive switches; switch contacts ETCO SWITCHING SYSTEM CO Ltd 19 June 1975 [12 May 1975] 19916/75 Heading H1N [Also in Division F2] A snap acting dished contact 1 is provided at its middle and on its periphery with dimples 2, 3 pointing in the opposite direction to that in which the dishing of the contact 1 points. In one embodiment, a keyswitch includes at least one contact disc 1 of stainless steel or phosphor bronze having three edge dimples 3 which rest on copper contacts 5 of a printed circuit board 6. The or each disc 1 is held in place by an apertured, insulating layer 8 and a flexible cover 9. When a key 11 is moved downwards, the central dimple 2 of the disc 1 engages a contact 7 on the board 6, the contact disc 1 snapping back to its original position when the key 11 is released. The dished contact may alternatively have a periphery comprising three straight edges interconnected by three arcuate edges (Fig. 4, not shown).
GB1991675A 1975-06-19 1975-06-19 Electrical contact elements for keyswitches Expired GB1486051A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1991675A GB1486051A (en) 1975-06-19 1975-06-19 Electrical contact elements for keyswitches

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1991675A GB1486051A (en) 1975-06-19 1975-06-19 Electrical contact elements for keyswitches

Publications (1)

Publication Number Publication Date
GB1486051A true GB1486051A (en) 1977-09-14

Family

ID=10137281

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1991675A Expired GB1486051A (en) 1975-06-19 1975-06-19 Electrical contact elements for keyswitches

Country Status (1)

Country Link
GB (1) GB1486051A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4319099A (en) * 1979-05-03 1982-03-09 Atari, Inc. Dome switch having contacts offering extended wear
FR2735276A1 (en) * 1995-06-12 1996-12-13 Itt Composants Instr Electrical tactile switch with curved flexible connecting metal leaf e.g. for mounting on IC of electronic device
DE102007009006A1 (en) * 2007-02-23 2008-08-28 Leopold Kostal Gmbh & Co. Kg Push-button for motor vehicle, has contact points, which are interconnected for current path, where contact points are formed by conductor strip of plastic over molded scrap web
EP1994244A1 (en) * 2006-03-07 2008-11-26 Huf Hülsbeck & Fürst GmbH & Co. KG Switching element

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4319099A (en) * 1979-05-03 1982-03-09 Atari, Inc. Dome switch having contacts offering extended wear
FR2735276A1 (en) * 1995-06-12 1996-12-13 Itt Composants Instr Electrical tactile switch with curved flexible connecting metal leaf e.g. for mounting on IC of electronic device
EP1994244A1 (en) * 2006-03-07 2008-11-26 Huf Hülsbeck & Fürst GmbH & Co. KG Switching element
EP1994244B1 (en) * 2006-03-07 2018-08-29 Huf Hülsbeck & Fürst GmbH & Co. KG Switching element
DE102007009006A1 (en) * 2007-02-23 2008-08-28 Leopold Kostal Gmbh & Co. Kg Push-button for motor vehicle, has contact points, which are interconnected for current path, where contact points are formed by conductor strip of plastic over molded scrap web

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Legal Events

Date Code Title Description
414F Notice of opposition given (sect. 14/1949)
414E Application relinquished (sect. 14/1949)
CSNS Application of which complete specification have been accepted and published, but patent is not sealed