EP0323916A3 - Push-button keypads - Google Patents

Push-button keypads Download PDF

Info

Publication number
EP0323916A3
EP0323916A3 EP19890300135 EP89300135A EP0323916A3 EP 0323916 A3 EP0323916 A3 EP 0323916A3 EP 19890300135 EP19890300135 EP 19890300135 EP 89300135 A EP89300135 A EP 89300135A EP 0323916 A3 EP0323916 A3 EP 0323916A3
Authority
EP
European Patent Office
Prior art keywords
push
button keypads
keypads
button
profiled
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.)
Withdrawn
Application number
EP19890300135
Other languages
German (de)
French (fr)
Other versions
EP0323916A2 (en
Inventor
Keith Barrie Doyle
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.)
Marconi Electronic Devices Ltd
Original Assignee
Marconi Electronic Devices 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 Marconi Electronic Devices Ltd filed Critical Marconi Electronic Devices Ltd
Publication of EP0323916A2 publication Critical patent/EP0323916A2/en
Publication of EP0323916A3 publication Critical patent/EP0323916A3/en
Withdrawn legal-status Critical Current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
    • 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
    • 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
    • H01H2203/00—Form of contacts
    • H01H2203/036—Form of contacts to solve particular problems
    • H01H2203/052—Form of contacts to solve particular problems for backlighted keyboards
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2209/00—Layers
    • H01H2209/024—Properties of the substrate
    • H01H2209/038—Properties of the substrate transparent
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2219/00—Legends
    • H01H2219/002—Legends replaceable; adaptable
    • H01H2219/006—Snap mounting
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2219/00—Legends
    • H01H2219/002—Legends replaceable; adaptable
    • H01H2219/018—Electroluminescent panel
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2221/00—Actuators
    • H01H2221/002—Actuators integral with membrane
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2223/00—Casings
    • H01H2223/002—Casings sealed

Abstract

A keypad of the kind utilising a profiled one-piece silicone-rubber mat, in which the rigid back plate is coated with electroluminescent material whereby the keys may be back-lit.
EP19890300135 1988-01-08 1989-01-09 Push-button keypads Withdrawn EP0323916A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB888800369A GB8800369D0 (en) 1988-01-08 1988-01-08 Push-button keypads
GB8800369 1988-01-08

Publications (2)

Publication Number Publication Date
EP0323916A2 EP0323916A2 (en) 1989-07-12
EP0323916A3 true EP0323916A3 (en) 1990-12-27

Family

ID=10629658

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19890300135 Withdrawn EP0323916A3 (en) 1988-01-08 1989-01-09 Push-button keypads

Country Status (4)

Country Link
EP (1) EP0323916A3 (en)
DK (1) DK729588A (en)
GB (2) GB8800369D0 (en)
NO (1) NO890063L (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5555550A (en) * 1990-10-01 1996-09-10 Motorola, Inc. Keypad apparatus with integral display indicators
US6040534A (en) * 1998-10-13 2000-03-21 Prince Corporation Integrally molded switch lighting and electronics
EP1526558A1 (en) * 2003-10-20 2005-04-27 Wincor Nixdorf International GmbH Key board

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2266282A1 (en) * 1974-04-01 1975-10-24 Litton Industries Inc
EP0017580A1 (en) * 1979-04-03 1980-10-15 OREGA ELECTRONIQUE & MECANIQUE Keyboard with luminous indicators, especially for a control box
US4310839A (en) * 1979-11-23 1982-01-12 Raytheon Company Interactive display system with touch data entry
DE3511496A1 (en) * 1985-03-29 1986-10-09 Telefunken electronic GmbH, 7100 Heilbronn Key-switching device having a transparent covering film

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2153078B (en) * 1983-10-27 1986-10-15 Ti Switch/display units
JPH0439613Y2 (en) * 1986-05-23 1992-09-17

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2266282A1 (en) * 1974-04-01 1975-10-24 Litton Industries Inc
EP0017580A1 (en) * 1979-04-03 1980-10-15 OREGA ELECTRONIQUE & MECANIQUE Keyboard with luminous indicators, especially for a control box
US4310839A (en) * 1979-11-23 1982-01-12 Raytheon Company Interactive display system with touch data entry
DE3511496A1 (en) * 1985-03-29 1986-10-09 Telefunken electronic GmbH, 7100 Heilbronn Key-switching device having a transparent covering film

Also Published As

Publication number Publication date
EP0323916A2 (en) 1989-07-12
GB8900388D0 (en) 1989-03-08
DK729588A (en) 1989-07-09
GB2213648A (en) 1989-08-16
NO890063L (en) 1989-07-10
DK729588D0 (en) 1988-12-29
GB8800369D0 (en) 1988-02-10
NO890063D0 (en) 1989-01-06

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