GB2091489B - Capacitive keyswitches with overtravel plunger mechanism - Google Patents

Capacitive keyswitches with overtravel plunger mechanism

Info

Publication number
GB2091489B
GB2091489B GB8201165A GB8201165A GB2091489B GB 2091489 B GB2091489 B GB 2091489B GB 8201165 A GB8201165 A GB 8201165A GB 8201165 A GB8201165 A GB 8201165A GB 2091489 B GB2091489 B GB 2091489B
Authority
GB
United Kingdom
Prior art keywords
plunger mechanism
keyswitches
capacitive
overtravel plunger
overtravel
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
GB8201165A
Other languages
English (en)
Other versions
GB2091489A (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.)
Illinois Tool Works Inc
Original Assignee
Illinois Tool Works Inc
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 Illinois Tool Works Inc filed Critical Illinois Tool Works Inc
Publication of GB2091489A publication Critical patent/GB2091489A/en
Application granted granted Critical
Publication of GB2091489B publication Critical patent/GB2091489B/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
    • H01H13/02—Details
    • H01H13/12—Movable parts; Contacts mounted thereon
    • H01H13/20—Driving mechanisms
    • 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
    • H03K17/965—Switches controlled by moving an element forming part of the switch
    • H03K17/975—Switches controlled by moving an element forming part of the switch using a capacitive movable element
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2239/00—Miscellaneous
    • H01H2239/006—Containing a capacitive switch or usable as such
GB8201165A 1981-01-21 1982-01-15 Capacitive keyswitches with overtravel plunger mechanism Expired GB2091489B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US06/226,583 US4352144A (en) 1981-01-21 1981-01-21 Capacitive keyswitch with overtravel plunger mechanism

Publications (2)

Publication Number Publication Date
GB2091489A GB2091489A (en) 1982-07-28
GB2091489B true GB2091489B (en) 1985-01-03

Family

ID=22849499

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8201165A Expired GB2091489B (en) 1981-01-21 1982-01-15 Capacitive keyswitches with overtravel plunger mechanism

Country Status (16)

Country Link
US (1) US4352144A (OSRAM)
JP (1) JPS57141818A (OSRAM)
AR (1) AR228173A1 (OSRAM)
AT (1) AT379261B (OSRAM)
BE (1) BE891832A (OSRAM)
BR (1) BR8200170A (OSRAM)
CA (1) CA1168730A (OSRAM)
CH (1) CH645487A5 (OSRAM)
DE (1) DE3200597A1 (OSRAM)
DK (1) DK23782A (OSRAM)
FR (1) FR2498394A1 (OSRAM)
GB (1) GB2091489B (OSRAM)
IT (1) IT1149454B (OSRAM)
NL (1) NL8105653A (OSRAM)
NO (1) NO820162L (OSRAM)
SE (1) SE8200292L (OSRAM)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7026362B2 (en) 2001-10-09 2006-04-11 Simax Technologies, Inc. Sol-gel process utilizing reduced mixing temperatures
US7001568B2 (en) 2002-02-01 2006-02-21 Simax Technologies, Inc. Method of removing liquid from pores of a sol-gel monolith
US6928220B2 (en) 2002-02-01 2005-08-09 Simax Technologies, Inc. Sol-gel-derived optical fiber preform and method of manufacture
US20090160672A1 (en) * 2005-11-11 2009-06-25 Linak A/S Electric Hand Control, Especially for Electrically Adjustable Hospital and Care Beds
DE102006035837A1 (de) * 2006-08-01 2008-02-07 Siemens Ag Bedienelement
DE102011121897A1 (de) 2011-12-22 2013-06-27 Diehl Ako Stiftung & Co. Kg Kapazitiver Berührungsschalter

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1729704A (en) * 1927-12-10 1929-10-01 Gen Electric Adjustable condenser
US3183912A (en) * 1962-05-31 1965-05-18 George S Mogilner Diathermy machine
US3671822A (en) * 1970-12-17 1972-06-20 Teletype Corp Variable capacitive apparatus
AU466541B2 (en) * 1972-08-10 1975-10-30 Oak Industries Inc Low profile keyboard switch
JPS5542759B2 (OSRAM) * 1973-11-02 1980-11-01
US4090229A (en) * 1976-09-30 1978-05-16 Becton, Dickinson Electronics Company Capacitive key for keyboard
GB1584345A (en) * 1977-05-11 1981-02-11 Alphameric Keyboards Ltd Keyboards

Also Published As

Publication number Publication date
GB2091489A (en) 1982-07-28
IT8219092A0 (it) 1982-01-13
FR2498394B1 (OSRAM) 1984-06-15
AT379261B (de) 1985-12-10
NO820162L (no) 1982-07-22
JPS57141818A (en) 1982-09-02
DE3200597A1 (de) 1982-08-26
SE8200292L (sv) 1982-07-22
BE891832A (nl) 1982-07-20
CA1168730A (en) 1984-06-05
ATA9682A (de) 1985-04-15
US4352144A (en) 1982-09-28
NL8105653A (nl) 1982-08-16
FR2498394A1 (fr) 1982-07-23
BR8200170A (pt) 1982-11-03
IT1149454B (it) 1986-12-03
DK23782A (da) 1982-07-22
AR228173A1 (es) 1983-01-31
CH645487A5 (fr) 1984-09-28

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee