DE3012717C2 - - Google Patents

Info

Publication number
DE3012717C2
DE3012717C2 DE3012717A DE3012717A DE3012717C2 DE 3012717 C2 DE3012717 C2 DE 3012717C2 DE 3012717 A DE3012717 A DE 3012717A DE 3012717 A DE3012717 A DE 3012717A DE 3012717 C2 DE3012717 C2 DE 3012717C2
Authority
DE
Germany
Prior art keywords
insulating layer
electrically conductive
opening
keypad according
contact surface
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
DE3012717A
Other languages
German (de)
English (en)
Other versions
DE3012717A1 (de
Inventor
Horst 8011 Hoehenkirchen De Hoffmann
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.)
WILHELM RUF KG 8000 MUENCHEN DE
Original Assignee
WILHELM RUF KG 8000 MUENCHEN DE
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 WILHELM RUF KG 8000 MUENCHEN DE filed Critical WILHELM RUF KG 8000 MUENCHEN DE
Priority to DE19803012717 priority Critical patent/DE3012717A1/de
Priority to GB8108494A priority patent/GB2072950B/en
Priority to FR8105987A priority patent/FR2479551B1/fr
Priority to IT20845/81A priority patent/IT1194776B/it
Publication of DE3012717A1 publication Critical patent/DE3012717A1/de
Application granted granted Critical
Publication of DE3012717C2 publication Critical patent/DE3012717C2/de
Granted 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2203/00—Form of contacts
    • H01H2203/026—Form of contacts on different planes
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2207/00—Connections
    • H01H2207/012—Connections via underside of substrate
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2225/00—Switch site location
    • H01H2225/006—Switch site location more then one pole
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2229/00—Manufacturing
    • H01H2229/064—Eliminating tolerances

Landscapes

  • Push-Button Switches (AREA)
DE19803012717 1980-04-01 1980-04-01 Tastenfeld Granted DE3012717A1 (de)

Priority Applications (4)

Application Number Priority Date Filing Date Title
DE19803012717 DE3012717A1 (de) 1980-04-01 1980-04-01 Tastenfeld
GB8108494A GB2072950B (en) 1980-04-01 1981-03-18 Keyboard
FR8105987A FR2479551B1 (fr) 1980-04-01 1981-03-25 Platine de clavier
IT20845/81A IT1194776B (it) 1980-04-01 1981-03-31 Tastiera

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19803012717 DE3012717A1 (de) 1980-04-01 1980-04-01 Tastenfeld

Publications (2)

Publication Number Publication Date
DE3012717A1 DE3012717A1 (de) 1981-10-08
DE3012717C2 true DE3012717C2 (pt) 1987-11-12

Family

ID=6099028

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19803012717 Granted DE3012717A1 (de) 1980-04-01 1980-04-01 Tastenfeld

Country Status (4)

Country Link
DE (1) DE3012717A1 (pt)
FR (1) FR2479551B1 (pt)
GB (1) GB2072950B (pt)
IT (1) IT1194776B (pt)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3316616A1 (de) * 1983-05-06 1984-11-08 Ruf Kg Wilhelm Tastenfeld
DE3413408C2 (de) * 1984-04-10 1986-05-15 Wilde Membran Impuls Technik GmbH, 5828 Ennepetal Flachtastatur
US4551586A (en) * 1984-06-18 1985-11-05 Motorola, Inc. Multiple contact layer membrane switch
DE3429309A1 (de) * 1984-08-09 1986-02-20 Philips Patentverwaltung Gmbh, 2000 Hamburg Elektronische dateneingabe-tastatur mit galvanische kontakte aufweisenden tasten
US5438177A (en) * 1992-05-06 1995-08-01 Key Tronic Corporation Two-layer membrane switch

Family Cites Families (8)

* 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
US3584162A (en) * 1970-02-16 1971-06-08 Ibm Electrical keyboard switch mechanism with improved resilient diaphragm contact actuator
US3684842A (en) * 1970-07-01 1972-08-15 Texas Instruments Inc Pushbutton keyboard switch assembly with improved over center diaphragm contact
GB1484634A (en) * 1973-08-20 1977-09-01 Northern Telecom Ltd Pushbutton switch
US4074088A (en) * 1974-05-21 1978-02-14 Texas Instruments Incorporated Keyboard apparatus and method of making
US4046981A (en) * 1975-12-24 1977-09-06 Texas Instruments Incorporated Keyboard switch with printed wiring board structure and its method of manufacture
JPS54104580A (en) * 1978-02-03 1979-08-16 Canon Kk Thin electronic device
FR2468159B1 (fr) * 1979-10-19 1986-09-19 Sagem Perfectionnements apportes aux claviers d'introduction manuelle de donnees

Also Published As

Publication number Publication date
FR2479551B1 (fr) 1985-11-08
GB2072950A (en) 1981-10-07
IT1194776B (it) 1988-09-28
IT8120845A1 (it) 1982-10-01
DE3012717A1 (de) 1981-10-08
GB2072950B (en) 1984-02-15
FR2479551A1 (fr) 1981-10-02
IT8120845A0 (it) 1981-03-31

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Legal Events

Date Code Title Description
OP8 Request for examination as to paragraph 44 patent law
D2 Grant after examination
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee