GB1239158A - - Google Patents

Info

Publication number
GB1239158A
GB1239158A GB1239158DA GB1239158A GB 1239158 A GB1239158 A GB 1239158A GB 1239158D A GB1239158D A GB 1239158DA GB 1239158 A GB1239158 A GB 1239158A
Authority
GB
United Kingdom
Prior art keywords
key
core
windings
april
bar
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
Other languages
English (en)
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 filed Critical
Publication of GB1239158A publication Critical patent/GB1239158A/en
Expired legal-status Critical Current

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
    • H03K17/965—Switches controlled by moving an element forming part of the switch
    • H03K17/97—Switches controlled by moving an element forming part of the switch using a magnetic movable element
    • H03K17/972—Switches controlled by moving an element forming part of the switch using a magnetic movable element having a plurality of control members, e.g. keyboard

Landscapes

  • Input From Keyboards Or The Like (AREA)
  • Printers Or Recording Devices Using Electromagnetic And Radiation Means (AREA)
  • Accessory Devices And Overall Control Thereof (AREA)
  • Electromagnets (AREA)
GB1239158D 1968-04-29 1969-04-29 Expired GB1239158A (https=)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US72476768A 1968-04-29 1968-04-29

Publications (1)

Publication Number Publication Date
GB1239158A true GB1239158A (https=) 1971-07-14

Family

ID=24911824

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1239158D Expired GB1239158A (https=) 1968-04-29 1969-04-29

Country Status (5)

Country Link
US (1) US3683110A (https=)
CA (1) CA926306A (https=)
DE (1) DE1921882A1 (https=)
FR (1) FR2007210A1 (https=)
GB (1) GB1239158A (https=)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3831730A (en) * 1973-01-31 1974-08-27 D Koeppe Keyboards
US4300127A (en) * 1978-09-27 1981-11-10 Bernin Victor M Solid state noncontacting keyboard employing a differential transformer element
US4494109A (en) * 1978-09-27 1985-01-15 Bernin Victor M Noncontacting keyboard employing a transformer element

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1030069B (de) * 1955-08-26 1958-05-14 IBM Deutschland Internationale Büro-Maschinen Gesellschaft m.b.H., Sindeliingen· (Württ.) Speichertastatur
US2997703A (en) * 1956-08-03 1961-08-22 Clary Corp Keyboard controlled circuitry
US3129418A (en) * 1960-08-04 1964-04-14 Teledyne Inc Electronic keyboard
US3119996A (en) * 1960-10-27 1964-01-28 Potter Instrument Co Inc Code generator with non-contacting coupling to character keys
US3160875A (en) * 1962-08-01 1964-12-08 Sperry Rand Corp Magnetic encoder
US3308236A (en) * 1963-05-22 1967-03-07 Navigation Computer Corp Binary coding-decoding circuits
GB1060878A (en) * 1965-06-18 1967-03-08 Creed & Co Ltd Code generating keyboards

Also Published As

Publication number Publication date
FR2007210A1 (https=) 1970-01-02
CA926306A (en) 1973-05-15
US3683110A (en) 1972-08-08
DE1921882A1 (de) 1969-11-20

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PLNP Patent lapsed through nonpayment of renewal fees