FI914006A0 - PLANKLAVIATUR. - Google Patents

PLANKLAVIATUR.

Info

Publication number
FI914006A0
FI914006A0 FI914006A FI914006A FI914006A0 FI 914006 A0 FI914006 A0 FI 914006A0 FI 914006 A FI914006 A FI 914006A FI 914006 A FI914006 A FI 914006A FI 914006 A0 FI914006 A0 FI 914006A0
Authority
FI
Finland
Prior art keywords
keyboard
membrane
bubble
membranes
chambers
Prior art date
Application number
FI914006A
Other languages
Finnish (fi)
Other versions
FI914006A (en
FI106229B (en
Inventor
Thomas Iten
Original Assignee
Dynalab Ag
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 Dynalab Ag filed Critical Dynalab Ag
Publication of FI914006A0 publication Critical patent/FI914006A0/en
Publication of FI914006A publication Critical patent/FI914006A/en
Application granted granted Critical
Publication of FI106229B publication Critical patent/FI106229B/en

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
    • H03K17/94—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the way in which the control signals are generated
    • H03K17/96—Touch switches
    • H03K17/964—Piezoelectric touch switches
    • H03K17/9643—Piezoelectric touch switches using a plurality of detectors, e.g. keyboard
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2239/00—Miscellaneous
    • H01H2239/038—Anti-vandalism

Landscapes

  • Push-Button Switches (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
  • Micro-Organisms Or Cultivation Processes Thereof (AREA)
  • Medicines Containing Plant Substances (AREA)
  • Input From Keyboards Or The Like (AREA)

Abstract

The keyboard has a basic membrane (3) and a cover membrane (4) which are connected to one another. Between these membranes, bubble-like chambers (6) are formed at the individual keys (1, 2). Each chamber (6) contains a piezoelectric element (5) which generates an electrical signal when a virtually zero-travel mechanical load is applied. The flat keyboard is simple to produce and has a reduced thickness. It is largely insensitive to the effect of moisture and mechanical fatigue. <IMAGE>
FI914006A 1990-08-29 1991-08-23 level Keyboard FI106229B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH280690 1990-08-29
CH2806/90A CH680890A5 (en) 1990-08-29 1990-08-29

Publications (3)

Publication Number Publication Date
FI914006A0 true FI914006A0 (en) 1991-08-23
FI914006A FI914006A (en) 1992-03-01
FI106229B FI106229B (en) 2000-12-15

Family

ID=4242012

Family Applications (1)

Application Number Title Priority Date Filing Date
FI914006A FI106229B (en) 1990-08-29 1991-08-23 level Keyboard

Country Status (10)

Country Link
EP (1) EP0472888B1 (en)
JP (1) JPH04256008A (en)
AT (1) ATE167767T1 (en)
BR (1) BR9103703A (en)
CA (1) CA2049150A1 (en)
CH (1) CH680890A5 (en)
DE (1) DE59109015D1 (en)
FI (1) FI106229B (en)
NO (1) NO305498B1 (en)
RU (1) RU2025771C1 (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT399406B (en) * 1992-06-03 1995-05-26 Frequentis Nachrichtentechnik Gmbh TOUCH-SENSITIVE INPUT UNIT
JPH0653151A (en) * 1992-06-03 1994-02-25 Showa Shell Sekiyu Kk Amorphous silicon thin film and solar cell applying the same
EP0576400B1 (en) * 1992-06-24 1996-09-04 Algra Holding Ag Method of making piezoelectric pressure-sensitive key or keyboard and product of the method
FI91686C (en) * 1992-08-31 1994-07-25 Kai Markus Martesuo Instrument
FI97577C (en) * 1994-12-28 1997-01-10 Screentec Ky Keyboard
DE19712137A1 (en) * 1997-03-22 1998-09-24 Aeg Hausgeraete Gmbh Control of operation of household equipment
DE102008011860B4 (en) 2008-02-29 2013-01-10 Seuffer Gmbh & Co.Kg Flat keyboard with piezoelectric detection
JP2010146482A (en) * 2008-12-22 2010-07-01 Sony Corp Electronic apparatus and method for manufacturing same
EP3282587A1 (en) 2016-08-12 2018-02-14 Big Kaiser Präzisionswerkzeuge Ag Electronic appliance with a button device
FI20205029A1 (en) 2020-01-14 2021-07-15 Aito Bv A haptic effect device

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4458173A (en) * 1983-02-04 1984-07-03 Essex-Tec Corporation Pressure sensitive electric signal generator
US4618797A (en) * 1984-12-24 1986-10-21 Cline David J Environmentally sealed piezoelectric sensing assembly for electrical switch
FR2576726B1 (en) * 1985-01-29 1993-02-19 Samokine Georges TOUCH CONTROL KEYBOARD
CH667763A5 (en) * 1985-07-23 1988-10-31 Schenk & Co FILM KEYBOARD.

Also Published As

Publication number Publication date
DE59109015D1 (en) 1998-07-30
JPH04256008A (en) 1992-09-10
EP0472888B1 (en) 1998-06-24
RU2025771C1 (en) 1994-12-30
NO305498B1 (en) 1999-06-07
BR9103703A (en) 1992-05-19
NO913156D0 (en) 1991-08-13
CA2049150A1 (en) 1992-03-01
FI914006A (en) 1992-03-01
ATE167767T1 (en) 1998-07-15
EP0472888A1 (en) 1992-03-04
FI106229B (en) 2000-12-15
CH680890A5 (en) 1992-11-30
NO913156L (en) 1992-03-02

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