IT1091947B - ELASTOMERIC MATERIAL CONDUCTOR UNDER PRESSURE - Google Patents

ELASTOMERIC MATERIAL CONDUCTOR UNDER PRESSURE

Info

Publication number
IT1091947B
IT1091947B IT6948677A IT6948677A IT1091947B IT 1091947 B IT1091947 B IT 1091947B IT 6948677 A IT6948677 A IT 6948677A IT 6948677 A IT6948677 A IT 6948677A IT 1091947 B IT1091947 B IT 1091947B
Authority
IT
Italy
Prior art keywords
under pressure
elastomeric material
conductor under
material conductor
elastomeric
Prior art date
Application number
IT6948677A
Other languages
Italian (it)
Original Assignee
Olivetti C Ing E C Spa
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 Olivetti C Ing E C Spa filed Critical Olivetti C Ing E C Spa
Priority to IT6948677A priority Critical patent/IT1091947B/en
Priority to DE7878300393T priority patent/DE2861435D1/en
Priority to EP19780300393 priority patent/EP0001882B1/en
Application granted granted Critical
Publication of IT1091947B publication Critical patent/IT1091947B/en

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
    • H01C—RESISTORS
    • H01C10/00—Adjustable resistors
    • H01C10/10—Adjustable resistors adjustable by mechanical pressure or force
    • H01C10/106—Adjustable resistors adjustable by mechanical pressure or force on resistive material dispersed in an elastic 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
    • H01H2201/036—Variable resistance
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2207/00—Connections
    • H01H2207/008—Adhesive means; Conductive adhesive
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2227/00—Dimensions; Characteristics
    • H01H2227/002—Layer thickness
    • H01H2227/012—Conductive rubber
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2227/00—Dimensions; Characteristics
    • H01H2227/002—Layer thickness
    • H01H2227/012—Conductive rubber
    • H01H2227/014—Conductive particles

Landscapes

  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Push-Button Switches (AREA)
IT6948677A 1977-11-07 1977-11-07 ELASTOMERIC MATERIAL CONDUCTOR UNDER PRESSURE IT1091947B (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
IT6948677A IT1091947B (en) 1977-11-07 1977-11-07 ELASTOMERIC MATERIAL CONDUCTOR UNDER PRESSURE
DE7878300393T DE2861435D1 (en) 1977-11-07 1978-09-18 Depressible contactless key for generating electric signals in an electronic keyboard
EP19780300393 EP0001882B1 (en) 1977-11-07 1978-09-18 Depressible contactless key for generating electric signals in an electronic keyboard

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT6948677A IT1091947B (en) 1977-11-07 1977-11-07 ELASTOMERIC MATERIAL CONDUCTOR UNDER PRESSURE

Publications (1)

Publication Number Publication Date
IT1091947B true IT1091947B (en) 1985-07-06

Family

ID=11312229

Family Applications (1)

Application Number Title Priority Date Filing Date
IT6948677A IT1091947B (en) 1977-11-07 1977-11-07 ELASTOMERIC MATERIAL CONDUCTOR UNDER PRESSURE

Country Status (3)

Country Link
EP (1) EP0001882B1 (en)
DE (1) DE2861435D1 (en)
IT (1) IT1091947B (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5641618A (en) * 1979-09-14 1981-04-18 Nissan Motor Picture display switch
JPS5846532A (en) * 1981-09-16 1983-03-18 東レ株式会社 Transparent panel switch structure and switch unit
DE3543890C2 (en) * 1985-12-12 1994-11-17 Thomson Brandt Gmbh Keyboard
US5216316A (en) * 1989-12-18 1993-06-01 Ralph Ipcinski Piezo electric transducer
US5455556A (en) * 1991-08-20 1995-10-03 Key Tronic Corporation Single station cursor device suitable for keyboards

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1298089A (en) * 1969-02-24 1972-11-29 William Barber Sudduth Electric switch made of conducting elastomer
DE1939642B2 (en) * 1969-08-04 1975-01-09 Standard Elektrik Lorenz Ag, 7000 Stuttgart Switch based on linear pressure for bounce-free switching
CH547007A (en) * 1972-04-06 1974-03-15 Wifo Forschungsinst Ag PRESSURE-SENSITIVE ELECTRIC SWITCH, IN PARTICULAR FOR LOW CURRENT OR SIGNAL CURRENT.
CH553066A (en) * 1972-04-26 1974-08-30 Battelle Memorial Institute METHOD OF MANUFACTURING AN ANISOTROPIC ELECTRIC CONDUCTIVITY TAPE.
US4292261A (en) * 1976-06-30 1981-09-29 Japan Synthetic Rubber Company Limited Pressure sensitive conductor and method of manufacturing the same

Also Published As

Publication number Publication date
EP0001882A1 (en) 1979-05-16
EP0001882B1 (en) 1981-12-09
DE2861435D1 (en) 1982-02-04

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