GB2183916B - Improvements relating to telephone keypads - Google Patents

Improvements relating to telephone keypads

Info

Publication number
GB2183916B
GB2183916B GB8627163A GB8627163A GB2183916B GB 2183916 B GB2183916 B GB 2183916B GB 8627163 A GB8627163 A GB 8627163A GB 8627163 A GB8627163 A GB 8627163A GB 2183916 B GB2183916 B GB 2183916B
Authority
GB
United Kingdom
Prior art keywords
improvements relating
telephone keypads
keypads
telephone
relating
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 - Fee Related
Application number
GB8627163A
Other versions
GB8627163D0 (en
GB2183916A (en
Inventor
Martin J Baker
David L Impett
David John Wake
Reginald Lawrence
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.)
Devlin Electronics Ltd
Original Assignee
Devlin Electronics 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
Priority claimed from GB858527958A external-priority patent/GB8527958D0/en
Priority claimed from GB858529230A external-priority patent/GB8529230D0/en
Application filed by Devlin Electronics Ltd filed Critical Devlin Electronics Ltd
Publication of GB8627163D0 publication Critical patent/GB8627163D0/en
Publication of GB2183916A publication Critical patent/GB2183916A/en
Application granted granted Critical
Publication of GB2183916B publication Critical patent/GB2183916B/en
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • H01H13/702—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
    • H01H13/705—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 construction, mounting or arrangement of operating parts, e.g. push-buttons or keys
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2221/00—Actuators
    • H01H2221/024—Transmission element
    • H01H2221/026—Guiding or lubricating nylon
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2227/00—Dimensions; Characteristics
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2229/00—Manufacturing
    • H01H2229/044—Injection moulding
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2231/00—Applications
    • H01H2231/022—Telephone handset
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2233/00—Key modules
    • H01H2233/01—Key modules mounted on laykey
    • H01H2233/02—Key modules mounted on laykey captured between assembled parts of support
    • H01H2233/022—Key modules mounted on laykey captured between assembled parts of support with limited freedom
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2233/00—Key modules
    • H01H2233/07—Cap or button on actuator part
    • H01H2233/074—Snap coupling
GB8627163A 1985-11-13 1986-11-13 Improvements relating to telephone keypads Expired - Fee Related GB2183916B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB858527958A GB8527958D0 (en) 1985-11-13 1985-11-13 Telephone keypads
GB858529230A GB8529230D0 (en) 1985-11-27 1985-11-27 Telephone keypads

Publications (3)

Publication Number Publication Date
GB8627163D0 GB8627163D0 (en) 1986-12-10
GB2183916A GB2183916A (en) 1987-06-10
GB2183916B true GB2183916B (en) 1990-02-07

Family

ID=26290003

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8627163A Expired - Fee Related GB2183916B (en) 1985-11-13 1986-11-13 Improvements relating to telephone keypads

Country Status (1)

Country Link
GB (1) GB2183916B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5115106A (en) * 1990-04-20 1992-05-19 Honeywell Inc. Momentary "on" switch suitable for keyboards

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1345831A (en) * 1971-05-20 1974-02-06 Controls Research Corp Electrical switch
GB1435434A (en) * 1973-06-01 1976-05-12 Burroughs Corp Key switch assembly for keyboards
EP0025629A1 (en) * 1979-09-18 1981-03-25 Koninklijke Philips Electronics N.V. Push-button switch
GB2070864A (en) * 1979-09-10 1981-09-09 Int Standard Electric Corp Keyboard assembly
EP0035189A1 (en) * 1980-02-27 1981-09-09 LA TELEPHONIE INDUSTRIELLE ET COMMERCIALE TELIC ALCATEL S.A. dite: Pushbutton for a control keyboard and method of manufacturing such a pushbutton
WO1982001100A1 (en) * 1980-09-17 1982-04-01 Ncr Co Keyboard and method of producing a keyboard
GB2137814A (en) * 1983-04-06 1984-10-10 Cherry Electrical Prod Electrical Switch with Conical Spring Actuator
US4560845A (en) * 1983-10-20 1985-12-24 Brother Kogyo Kabushiki Kaisha Keyboard

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1345831A (en) * 1971-05-20 1974-02-06 Controls Research Corp Electrical switch
GB1435434A (en) * 1973-06-01 1976-05-12 Burroughs Corp Key switch assembly for keyboards
GB2070864A (en) * 1979-09-10 1981-09-09 Int Standard Electric Corp Keyboard assembly
EP0025629A1 (en) * 1979-09-18 1981-03-25 Koninklijke Philips Electronics N.V. Push-button switch
EP0035189A1 (en) * 1980-02-27 1981-09-09 LA TELEPHONIE INDUSTRIELLE ET COMMERCIALE TELIC ALCATEL S.A. dite: Pushbutton for a control keyboard and method of manufacturing such a pushbutton
WO1982001100A1 (en) * 1980-09-17 1982-04-01 Ncr Co Keyboard and method of producing a keyboard
GB2137814A (en) * 1983-04-06 1984-10-10 Cherry Electrical Prod Electrical Switch with Conical Spring Actuator
US4560845A (en) * 1983-10-20 1985-12-24 Brother Kogyo Kabushiki Kaisha Keyboard

Also Published As

Publication number Publication date
GB8627163D0 (en) 1986-12-10
GB2183916A (en) 1987-06-10

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Legal Events

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