CA966105A - Keyboard - Google Patents

Keyboard

Info

Publication number
CA966105A
CA966105A CA137,654A CA137654A CA966105A CA 966105 A CA966105 A CA 966105A CA 137654 A CA137654 A CA 137654A CA 966105 A CA966105 A CA 966105A
Authority
CA
Canada
Prior art keywords
keyboard
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
CA137,654A
Other versions
CA137654S (en
Inventor
Richard W. Pitman
Michel Bass
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.)
AB Dick Co
Original Assignee
Multigraphics 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 Multigraphics Inc filed Critical Multigraphics Inc
Application granted granted Critical
Publication of CA966105A publication Critical patent/CA966105A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J5/00—Devices or arrangements for controlling character selection
    • B41J5/08—Character or syllable selected by means of keys or keyboards of the typewriter type
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J5/00—Devices or arrangements for controlling character selection
    • B41J5/08—Character or syllable selected by means of keys or keyboards of the typewriter type
    • B41J5/14—Construction of key levers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J5/00—Devices or arrangements for controlling character selection
    • B41J5/08—Character or syllable selected by means of keys or keyboards of the typewriter type
    • B41J5/28—Multiple-action keys, e.g. keys depressed by two or more amounts or movable in two or more directions to effect different functions or selections
    • 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
    • H01H13/72—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 wherein the switch has means for limiting the number of operating members that can concurrently be in the actuated position
CA137,654A 1971-04-23 1972-03-21 Keyboard Expired CA966105A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US13693171A 1971-04-23 1971-04-23

Publications (1)

Publication Number Publication Date
CA966105A true CA966105A (en) 1975-04-15

Family

ID=22475066

Family Applications (1)

Application Number Title Priority Date Filing Date
CA137,654A Expired CA966105A (en) 1971-04-23 1972-03-21 Keyboard

Country Status (6)

Country Link
US (1) US3722651A (en)
JP (1) JPS5324845B1 (en)
CA (1) CA966105A (en)
DE (1) DE2219751A1 (en)
GB (1) GB1391197A (en)
IT (1) IT957562B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3863748A (en) * 1973-11-14 1975-02-04 Singer Co Shift lock mechanism

Also Published As

Publication number Publication date
DE2219751A1 (en) 1972-11-09
US3722651A (en) 1973-03-27
IT957562B (en) 1973-10-20
JPS5324845B1 (en) 1978-07-24
GB1391197A (en) 1975-04-16

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