GB8420140D0 - Membrane switches - Google Patents

Membrane switches

Info

Publication number
GB8420140D0
GB8420140D0 GB848420140A GB8420140A GB8420140D0 GB 8420140 D0 GB8420140 D0 GB 8420140D0 GB 848420140 A GB848420140 A GB 848420140A GB 8420140 A GB8420140 A GB 8420140A GB 8420140 D0 GB8420140 D0 GB 8420140D0
Authority
GB
United Kingdom
Prior art keywords
membrane switches
switches
membrane
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Withdrawn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
GB848420140A
Other versions
GB2144917A (en
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.)
British Telecommunications PLC
Original Assignee
British Telecommunications 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 British Telecommunications PLC filed Critical British Telecommunications PLC
Publication of GB8420140D0 publication Critical patent/GB8420140D0/en
Publication of GB2144917A publication Critical patent/GB2144917A/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Withdrawn legal-status Critical Current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
    • H01H2201/026—Material non precious
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2201/00—Contacts
    • H01H2201/022—Material
    • H01H2201/03—Composite
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2207/00—Connections
    • H01H2207/02—Solder
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2209/00—Layers
    • H01H2209/024—Properties of the substrate
    • H01H2209/032—Properties of the substrate non elastomeric
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2209/00—Layers
    • H01H2209/068—Properties of the membrane
    • H01H2209/076—Properties of the membrane non elastomeric
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2229/00—Manufacturing
    • H01H2229/002—Screen printing
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2229/00—Manufacturing
    • H01H2229/008—Die stamping
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2229/00—Manufacturing
    • H01H2229/016—Selective etching
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2229/00—Manufacturing
    • H01H2229/024—Packing between substrate and membrane
    • H01H2229/028—Adhesive
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2229/00—Manufacturing
    • H01H2229/038—Folding of flexible printed circuit
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2239/00—Miscellaneous
    • H01H2239/008—Static electricity considerations
GB08420140A 1983-08-11 1984-08-08 Membrane switches Withdrawn GB2144917A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB838321689A GB8321689D0 (en) 1983-08-11 1983-08-11 Membrane switches

Publications (2)

Publication Number Publication Date
GB8420140D0 true GB8420140D0 (en) 1984-09-12
GB2144917A GB2144917A (en) 1985-03-13

Family

ID=10547180

Family Applications (2)

Application Number Title Priority Date Filing Date
GB838321689A Pending GB8321689D0 (en) 1983-08-11 1983-08-11 Membrane switches
GB08420140A Withdrawn GB2144917A (en) 1983-08-11 1984-08-08 Membrane switches

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB838321689A Pending GB8321689D0 (en) 1983-08-11 1983-08-11 Membrane switches

Country Status (3)

Country Link
EP (1) EP0133817A3 (en)
GB (2) GB8321689D0 (en)
WO (1) WO1985000923A1 (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4713534A (en) * 1986-02-18 1987-12-15 Carroll Touch Inc. Phototransistor apparatus with current injection ambient compensation
IT1208461B (en) * 1987-01-30 1989-06-22 Granarolo Dell Emilia Bo Melic SHOCKPROOF PROTECTIVE CASE FOR REMOTE CONTROLS IN PARTICULAR OF TVS
US6958183B2 (en) * 2001-02-20 2005-10-25 Teikoku Tsushin Kogyo Co., Ltd. Key top plate and a method for manufacturing the same
GB2421635B (en) * 2004-12-24 2007-12-05 In2Connect Ltd A switch
FR2881091B1 (en) * 2005-01-24 2007-08-24 Cera PACKING COMPONENT COMPRISING A THIN CONTROL LAYER FORMING A SWITCH
CN106994924A (en) * 2017-05-18 2017-08-01 上海安闻汽车电子有限公司 A kind of human pressure's sensor and automotive seat
EP3747037B1 (en) 2018-02-01 2023-11-22 Razer (Asia-Pacific) Pte. Ltd. Key switch mechanisms, user input devices and methods of fabricating a key switch mechanism

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3862381A (en) * 1973-10-29 1975-01-21 Chomerics Inc Keyboard switch assembly with multilayer, coextensive contactor means
US4338502A (en) * 1978-04-27 1982-07-06 Sharp Kabushiki Kaisha Metallic housing for an electronic apparatus with a flat keyboard
US4314114A (en) * 1980-02-04 1982-02-02 Oak Industries Laminated membrane switch
AT370912B (en) * 1980-09-17 1983-05-10 Electrovac DEVICE FOR SWITCHING ONE OR MORE ELECTRICAL CIRCUITS

Also Published As

Publication number Publication date
WO1985000923A1 (en) 1985-02-28
EP0133817A2 (en) 1985-03-06
GB8321689D0 (en) 1983-09-14
GB2144917A (en) 1985-03-13
EP0133817A3 (en) 1985-04-10

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Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)