FR2479551B1 - KEYBOARD PLATE - Google Patents

KEYBOARD PLATE

Info

Publication number
FR2479551B1
FR2479551B1 FR8105987A FR8105987A FR2479551B1 FR 2479551 B1 FR2479551 B1 FR 2479551B1 FR 8105987 A FR8105987 A FR 8105987A FR 8105987 A FR8105987 A FR 8105987A FR 2479551 B1 FR2479551 B1 FR 2479551B1
Authority
FR
France
Prior art keywords
keyboard plate
keyboard
plate
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
FR8105987A
Other languages
French (fr)
Other versions
FR2479551A1 (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.)
Wilhelm Ruf KG
Original Assignee
Wilhelm Ruf KG
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 filed Critical Wilhelm Ruf KG
Publication of FR2479551A1 publication Critical patent/FR2479551A1/en
Application granted granted Critical
Publication of FR2479551B1 publication Critical patent/FR2479551B1/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
    • H01H13/702—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
FR8105987A 1980-04-01 1981-03-25 KEYBOARD PLATE Expired FR2479551B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19803012717 DE3012717A1 (en) 1980-04-01 1980-04-01 KEYPAD

Publications (2)

Publication Number Publication Date
FR2479551A1 FR2479551A1 (en) 1981-10-02
FR2479551B1 true FR2479551B1 (en) 1985-11-08

Family

ID=6099028

Family Applications (1)

Application Number Title Priority Date Filing Date
FR8105987A Expired FR2479551B1 (en) 1980-04-01 1981-03-25 KEYBOARD PLATE

Country Status (4)

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

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8313473U1 (en) * 1983-05-06 1986-10-02 Wilhelm Ruf Kg, 8000 Muenchen Keypad
DE3413408C2 (en) * 1984-04-10 1986-05-15 Wilde Membran Impuls Technik GmbH, 5828 Ennepetal Flat keyboard
US4551586A (en) * 1984-06-18 1985-11-05 Motorola, Inc. Multiple contact layer membrane switch
DE3429309A1 (en) * 1984-08-09 1986-02-20 Philips Patentverwaltung Gmbh, 2000 Hamburg ELECTRONIC DATA INPUT KEYBOARD WITH KEYS HAVING GALVANIC CONTACTS
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
JPS5072182A (en) * 1973-08-20 1975-06-14
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 (en) * 1979-10-19 1986-09-19 Sagem IMPROVEMENTS TO KEYBOARDS FOR MANUAL INPUT OF DATA

Also Published As

Publication number Publication date
IT8120845A1 (en) 1982-10-01
GB2072950A (en) 1981-10-07
DE3012717C2 (en) 1987-11-12
IT8120845A0 (en) 1981-03-31
DE3012717A1 (en) 1981-10-08
FR2479551A1 (en) 1981-10-02
GB2072950B (en) 1984-02-15
IT1194776B (en) 1988-09-28

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Legal Events

Date Code Title Description
ST Notification of lapse