GB2102626B - Contact dimple pad - Google Patents

Contact dimple pad

Info

Publication number
GB2102626B
GB2102626B GB08122393A GB8122393A GB2102626B GB 2102626 B GB2102626 B GB 2102626B GB 08122393 A GB08122393 A GB 08122393A GB 8122393 A GB8122393 A GB 8122393A GB 2102626 B GB2102626 B GB 2102626B
Authority
GB
United Kingdom
Prior art keywords
contact dimple
dimple pad
pad
contact
dimple
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
GB08122393A
Other versions
GB2102626A (en
Inventor
Frederick John Howett
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
Priority to GB08122393A priority Critical patent/GB2102626B/en
Priority to NZ20118682A priority patent/NZ201186A/en
Priority to AU86073/82A priority patent/AU553429B2/en
Publication of GB2102626A publication Critical patent/GB2102626A/en
Application granted granted Critical
Publication of GB2102626B publication Critical patent/GB2102626B/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
    • H01H13/702—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
    • 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
    • H01H2231/00—Applications
    • H01H2231/022—Telephone handset
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2239/00—Miscellaneous
    • H01H2239/008—Static electricity considerations

Landscapes

  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Composite Materials (AREA)
  • Materials Engineering (AREA)
  • Push-Button Switches (AREA)
GB08122393A 1981-07-21 1981-07-21 Contact dimple pad Expired GB2102626B (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
GB08122393A GB2102626B (en) 1981-07-21 1981-07-21 Contact dimple pad
NZ20118682A NZ201186A (en) 1981-07-21 1982-07-06 Membrane push button switch array:conductive elastomeric pad screens contacts from electrostatic discharges
AU86073/82A AU553429B2 (en) 1981-07-21 1982-07-16 Push-button switch

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB08122393A GB2102626B (en) 1981-07-21 1981-07-21 Contact dimple pad

Publications (2)

Publication Number Publication Date
GB2102626A GB2102626A (en) 1983-02-02
GB2102626B true GB2102626B (en) 1985-06-05

Family

ID=10523377

Family Applications (1)

Application Number Title Priority Date Filing Date
GB08122393A Expired GB2102626B (en) 1981-07-21 1981-07-21 Contact dimple pad

Country Status (3)

Country Link
AU (1) AU553429B2 (en)
GB (1) GB2102626B (en)
NZ (1) NZ201186A (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU601417B2 (en) * 1986-05-20 1990-09-13 Alcatel Australia Limited Improved keypad
AU7035596A (en) * 1995-11-13 1997-05-22 Motorola, Inc. Membrane shield
FI100142B (en) * 1995-12-14 1997-09-30 Nokia Display Products Oy Keyboard structure that reduces electromagnetic interference
FI102119B (en) * 1996-10-04 1998-10-15 Nokia Mobile Phones Ltd Keyboard arrangement and method for identifying printed pliers t
DE10034771A1 (en) * 2000-07-18 2002-01-31 Mannesmann Vdo Ag Switching device for an electrical device
ATE538428T1 (en) * 2005-10-05 2012-01-15 Imerj Ltd PORTABLE ELECTRONIC COMMUNICATION DEVICE WITH METAL KEYPAD

Also Published As

Publication number Publication date
NZ201186A (en) 1984-09-28
AU8607382A (en) 1983-01-27
AU553429B2 (en) 1986-07-17
GB2102626A (en) 1983-02-02

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Legal Events

Date Code Title Description
732 Registration of transactions, instruments or events in the register (sect. 32/1977)
732E Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977)
732E Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977)
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19940721