GB1312740A - Push buttons - Google Patents

Push buttons

Info

Publication number
GB1312740A
GB1312740A GB1312740DA GB1312740A GB 1312740 A GB1312740 A GB 1312740A GB 1312740D A GB1312740D A GB 1312740DA GB 1312740 A GB1312740 A GB 1312740A
Authority
GB
United Kingdom
Prior art keywords
button
portions
rubber
tracks
gaps
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
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.)
STC PLC
Original Assignee
Standard Telephone and Cables PLC
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 Standard Telephone and Cables PLC filed Critical Standard Telephone and Cables PLC
Publication of GB1312740A publication Critical patent/GB1312740A/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
    • H01H13/70—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard
    • H01H13/78—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard characterised by the contacts or the contact sites
    • H01H13/785—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard characterised by the contacts or the contact sites characterised by the material of the contacts, e.g. conductive polymers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/02—Contacts characterised by the material thereof
    • H01H1/021—Composite material
    • H01H1/029—Composite material comprising conducting material dispersed in an elastic support or binding material
    • 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
    • H01H13/70—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard
    • H01H13/83—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard characterised by legends, e.g. Braille, liquid crystal displays, light emitting or optical elements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/02—Constructional features of telephone sets
    • H04M1/22—Illumination; Arrangements for improving the visibility of characters on dials
    • 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
    • H01H13/70—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard
    • H01H13/702—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard with contacts carried by or formed from layers in a multilayer structure, e.g. membrane switches
    • H01H13/703—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard with contacts carried by or formed from layers in a multilayer structure, e.g. membrane switches characterised by spacers between contact carrying layers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2201/00—Contacts
    • H01H2201/022—Material
    • H01H2201/032—Conductive polymer; Rubber
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2211/00—Spacers
    • H01H2211/006—Individual areas
    • H01H2211/01—Ink
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2219/00—Legends
    • H01H2219/036—Light emitting elements
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2219/00—Legends
    • H01H2219/036—Light emitting elements
    • H01H2219/04—Attachments; Connections
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2223/00—Casings
    • H01H2223/002—Casings sealed
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2231/00—Applications
    • H01H2231/022—Telephone handset

Abstract

1312740 Retractive switches STANDARD TELEPHONES & CABLES Ltd 2 Dec 1971 55964/71 Heading H1N A push-button switch has one or more portions 10, 11, of conductive rubber or the like separated from tracks 5, 6, on a circuit board 4 by an insulating layer 7, 8, 9 with gaps in it, each gap being aligned with one of said portions 10, 11, whereby when the button 1 is depressed the conductive material 10, 11 is forced through the gaps in said insulation 7, 8, 9 and into engagement with said tracks 5, 6, to complete one or more circuits, and on release of the button 1 the resilience of the rubber or rubber-like material restores the button 1 to its rest position in which said one or more circuits are broken. As shown, the button 1 is retained in a panel 3 by an enlarged base, and a flexible plastics layer 12, 13, 14 provides a seal. The portions 10, 11 may be separate, or different parts of a disc. The button 1 is of transparent insulating material and accommodates an indicator lamp 2. The insulation 7, 8, 9 is, for example, 0À005 inch thick.
GB1312740D 1971-12-02 1971-12-02 Push buttons Expired GB1312740A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB5596471 1971-12-02

Publications (1)

Publication Number Publication Date
GB1312740A true GB1312740A (en) 1973-04-04

Family

ID=10475354

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1312740D Expired GB1312740A (en) 1971-12-02 1971-12-02 Push buttons

Country Status (1)

Country Link
GB (1) GB1312740A (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2324108A1 (en) * 1975-09-15 1977-04-08 Globe Union Inc MEMBRANE SWITCHING DEVICE, TOUCH CONTROL
FR2358000A1 (en) * 1976-07-08 1978-02-03 Bowmar Instrument Corp LUMINOUS PUSH-BUTTON SWITCH
US4242546A (en) 1978-11-06 1980-12-30 International Telephone And Telegraph Corporation Electrical push-button switch
EP0068133A2 (en) * 1981-06-12 1983-01-05 Wilhelm Ruf KG Switch disposition with an elastic switch element
WO1983000946A1 (en) * 1981-09-10 1983-03-17 Gafner, Gottfried Pannel with light keys
EP0075091A1 (en) * 1981-09-18 1983-03-30 Wilhelm Ruf KG Electric switch with an elastically deformable switching element
FR2517846A1 (en) * 1981-12-07 1983-06-10 Thomson Csf Mat Tel Sealed LED connection for control keyboard - has silicone rubber blanket covering circuit board and forming cylindrical seal around light source
EP0703591A1 (en) * 1994-09-21 1996-03-27 Hewlett-Packard Company Input/output device with a lamp and a switch having protection against electrostatic discharge and contamination

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2324108A1 (en) * 1975-09-15 1977-04-08 Globe Union Inc MEMBRANE SWITCHING DEVICE, TOUCH CONTROL
FR2358000A1 (en) * 1976-07-08 1978-02-03 Bowmar Instrument Corp LUMINOUS PUSH-BUTTON SWITCH
US4242546A (en) 1978-11-06 1980-12-30 International Telephone And Telegraph Corporation Electrical push-button switch
EP0068133A2 (en) * 1981-06-12 1983-01-05 Wilhelm Ruf KG Switch disposition with an elastic switch element
EP0068133A3 (en) * 1981-06-12 1983-03-30 Wilhelm Ruf Kg Switch disposition with an elastic switch element
WO1983000946A1 (en) * 1981-09-10 1983-03-17 Gafner, Gottfried Pannel with light keys
EP0075091A1 (en) * 1981-09-18 1983-03-30 Wilhelm Ruf KG Electric switch with an elastically deformable switching element
FR2517846A1 (en) * 1981-12-07 1983-06-10 Thomson Csf Mat Tel Sealed LED connection for control keyboard - has silicone rubber blanket covering circuit board and forming cylindrical seal around light source
EP0703591A1 (en) * 1994-09-21 1996-03-27 Hewlett-Packard Company Input/output device with a lamp and a switch having protection against electrostatic discharge and contamination

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee