GB1127840A - Keyboard for electronic accounting, invoicing, computing and calculating machines - Google Patents

Keyboard for electronic accounting, invoicing, computing and calculating machines

Info

Publication number
GB1127840A
GB1127840A GB5607566A GB5607566A GB1127840A GB 1127840 A GB1127840 A GB 1127840A GB 5607566 A GB5607566 A GB 5607566A GB 5607566 A GB5607566 A GB 5607566A GB 1127840 A GB1127840 A GB 1127840A
Authority
GB
United Kingdom
Prior art keywords
push
button
invoicing
keyboard
computing
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
GB5607566A
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.)
ELDATA GES fur ELEKTRONISCHE D
Original Assignee
ELDATA GES fur ELEKTRONISCHE D
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 ELDATA GES fur ELEKTRONISCHE D filed Critical ELDATA GES fur ELEKTRONISCHE D
Publication of GB1127840A publication Critical patent/GB1127840A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H36/00—Switches actuated by change of magnetic field or of electric field, e.g. by change of relative position of magnet and switch, by shielding
    • H01H36/0006—Permanent magnet actuating reed switches
    • H01H36/004—Permanent magnet actuating reed switches push-button-operated, e.g. for keyboards
    • 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

Landscapes

  • Push-Button Switches (AREA)

Abstract

1,127,840. Magnetic switches. ELDATA GESELLSCHAFT FUR ELECTRONISCHE DATENVERARBEITUNG m.b.H. 14 Dec., 1966 [16 May, 1966], No. 56075/66. Heading H1N. A plurality of push-button switches each have a switch tube 24 in which a magnetic contact bridge (not shown) is movable between pairs of fixed contacts 25, 26 by a permanent ring magnet 27 on a holder 28 biased by a compression spring 30 and secured to a shaft 21 of push-button 18. The switch tubes 24 are mounted by their connectors on printed circuit boards 6, 7 the latter having plug-in mounting connectors (not shown). Stops 22, 23 limit the push-button movement.
GB5607566A 1966-05-16 1966-12-14 Keyboard for electronic accounting, invoicing, computing and calculating machines Expired GB1127840A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEE0023450 1966-05-16

Publications (1)

Publication Number Publication Date
GB1127840A true GB1127840A (en) 1968-09-18

Family

ID=7071077

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5607566A Expired GB1127840A (en) 1966-05-16 1966-12-14 Keyboard for electronic accounting, invoicing, computing and calculating machines

Country Status (1)

Country Link
GB (1) GB1127840A (en)

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