GB2178235B - Keypad - Google Patents

Keypad

Info

Publication number
GB2178235B
GB2178235B GB08608277A GB8608277A GB2178235B GB 2178235 B GB2178235 B GB 2178235B GB 08608277 A GB08608277 A GB 08608277A GB 8608277 A GB8608277 A GB 8608277A GB 2178235 B GB2178235 B GB 2178235B
Authority
GB
United Kingdom
Prior art keywords
keypad
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
GB08608277A
Other versions
GB8608277D0 (en
GB2178235A (en
Inventor
John Kenneth Williams
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 GB8608277D0 publication Critical patent/GB8608277D0/en
Publication of GB2178235A publication Critical patent/GB2178235A/en
Application granted granted Critical
Publication of GB2178235B publication Critical patent/GB2178235B/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
    • 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
    • H01H2203/04—Form of contacts to solve particular problems to facilitate connections
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2215/00—Tactile feedback
    • H01H2215/004—Collapsible dome or bubble
    • H01H2215/008—Part of substrate or membrane
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2221/00—Actuators
    • H01H2221/002—Actuators integral with membrane
    • H01H2221/006—Adhesive
    • 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
GB08608277A 1985-04-04 1986-04-04 Keypad Expired GB2178235B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB858508808A GB8508808D0 (en) 1985-04-04 1985-04-04 Keypad

Publications (3)

Publication Number Publication Date
GB8608277D0 GB8608277D0 (en) 1986-05-08
GB2178235A GB2178235A (en) 1987-02-04
GB2178235B true GB2178235B (en) 1988-08-24

Family

ID=10577200

Family Applications (2)

Application Number Title Priority Date Filing Date
GB858508808A Pending GB8508808D0 (en) 1985-04-04 1985-04-04 Keypad
GB08608277A Expired GB2178235B (en) 1985-04-04 1986-04-04 Keypad

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB858508808A Pending GB8508808D0 (en) 1985-04-04 1985-04-04 Keypad

Country Status (1)

Country Link
GB (2) GB8508808D0 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9213869B2 (en) 2013-10-04 2015-12-15 Verifone, Inc. Magnetic stripe reading device

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4857683A (en) * 1988-12-28 1989-08-15 W. H. Brady Co. Membrane switchcores with key cell contact elements connected together for continuous path testing
EP0565959B1 (en) * 1992-04-14 1996-08-28 MOTOROLA GmbH A keypad
DE19726486B4 (en) * 1997-06-21 2007-05-16 Siemens Ag switching element
JP3819124B2 (en) * 1997-08-29 2006-09-06 アルゼ株式会社 Switch structure
US9013336B2 (en) 2008-01-22 2015-04-21 Verifone, Inc. Secured keypad devices
US8595514B2 (en) 2008-01-22 2013-11-26 Verifone, Inc. Secure point of sale terminal
DE102008058815B4 (en) * 2008-11-24 2016-06-09 Sasse Elektronik Gmbh keyboard
US8432300B2 (en) 2009-03-26 2013-04-30 Hypercom Corporation Keypad membrane security
US8358218B2 (en) 2010-03-02 2013-01-22 Verifone, Inc. Point of sale terminal having enhanced security
US8330606B2 (en) 2010-04-12 2012-12-11 Verifone, Inc. Secure data entry device
US8405506B2 (en) 2010-08-02 2013-03-26 Verifone, Inc. Secure data entry device
US8621235B2 (en) 2011-01-06 2013-12-31 Verifone, Inc. Secure pin entry device
US8884757B2 (en) 2011-07-11 2014-11-11 Verifone, Inc. Anti-tampering protection assembly
US9691066B2 (en) 2012-07-03 2017-06-27 Verifone, Inc. Location-based payment system and method
US20160026275A1 (en) 2014-07-23 2016-01-28 Verifone, Inc. Data device including ofn functionality
US9595174B2 (en) 2015-04-21 2017-03-14 Verifone, Inc. Point of sale terminal having enhanced security
US10544923B1 (en) 2018-11-06 2020-01-28 Verifone, Inc. Devices and methods for optical-based tamper detection using variable light characteristics
GB201904770D0 (en) * 2019-04-04 2019-05-22 Tech 21 Licensing Ltd A case for mobile device with a screen

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2526850A (en) * 1947-01-20 1950-10-24 Cutler Hammer Inc Snap switch
US3928741A (en) * 1974-09-16 1975-12-23 Texas Instruments Inc Momentary contact single pole switch
JPS5168726A (en) * 1974-12-12 1976-06-14 Hosiden Electronics Co
US4246452A (en) * 1979-01-05 1981-01-20 Mattel, Inc. Switch apparatus
GB2065978B (en) * 1979-12-19 1983-12-07 Express Lift Co Ltd Press button electrical switches
GB2144582B (en) * 1983-08-05 1987-06-10 Nintendo Co Ltd Multi-directional electrical switch

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9213869B2 (en) 2013-10-04 2015-12-15 Verifone, Inc. Magnetic stripe reading device

Also Published As

Publication number Publication date
GB8508808D0 (en) 1985-05-09
GB8608277D0 (en) 1986-05-08
GB2178235A (en) 1987-02-04

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Legal Events

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

Effective date: 19950404