GB1317782A - Push-button key apparatus and arrangement thereof - Google Patents

Push-button key apparatus and arrangement thereof

Info

Publication number
GB1317782A
GB1317782A GB3479170A GB3479170A GB1317782A GB 1317782 A GB1317782 A GB 1317782A GB 3479170 A GB3479170 A GB 3479170A GB 3479170 A GB3479170 A GB 3479170A GB 1317782 A GB1317782 A GB 1317782A
Authority
GB
United Kingdom
Prior art keywords
push
button
magnets
july
contact unit
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
GB3479170A
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.)
Canon Inc
Original Assignee
Canon 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 Canon Inc filed Critical Canon Inc
Publication of GB1317782A publication Critical patent/GB1317782A/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
    • 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

Landscapes

  • Push-Button Switches (AREA)

Abstract

1317782 Magnetic switches CANON K K 17 July 1970 [18 July 1969] 34791/70 Heading H1N A push-button switch forming part of a computer key-board has a magnet portion movable by the push-button key 19 and providing parallel magnetic fluxes M1, M2 opposite in sense and located so that in the unoperated position a sealed magnetic reed contact unit 15 is in the neutral zone between the two flexes and when the push-button is operated the magnets move to a position in which flux M1 predominates to operate the contact unit 15. Resilient pads (23, 30) may cushion the final push-button movement in both directions and a return spring (22) biases the push-button to the inoperative position. The magnet poles may be formed as areas on a single sheet 126, Fig. 6A or two magnets 127, 128 of different widths may be provided so as to reduce the push-button travel. Such switches can be arranged on a keyboard with their magnets facing the same way or alternately in rows and columns (Fig. 7, not shown).
GB3479170A 1969-07-18 1970-07-17 Push-button key apparatus and arrangement thereof Expired GB1317782A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5713369 1969-07-18

Publications (1)

Publication Number Publication Date
GB1317782A true GB1317782A (en) 1973-05-23

Family

ID=13047047

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3479170A Expired GB1317782A (en) 1969-07-18 1970-07-17 Push-button key apparatus and arrangement thereof

Country Status (2)

Country Link
US (1) US3728652A (en)
GB (1) GB1317782A (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4786766A (en) * 1985-08-26 1988-11-22 Canon Kabushiki Kaisha Keyboard apparatus
FR2638010B1 (en) * 1988-10-13 1991-01-18 Acroe MODULAR RETROACTIVE KEYBOARD AND FLAT MODULAR ACTUATOR
EP3183205A4 (en) * 2014-08-29 2018-03-21 Automatic Bar Controls, Inc. Beverage dispensing apparatus with sensor assembly for sensing dispensing of beverage

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3260819A (en) * 1964-07-21 1966-07-12 Wyle Laboratories Manually actuatable switch assembly
DE1590616B1 (en) * 1966-08-24 1971-04-29 Standard Elek K Lorenz Ag ELECTRICAL SWITCHING DEVICE OR KEYPAD WITH ROWS AND PIPE ANCHOR CONTACTS ARRANGED IN COLUMNS

Also Published As

Publication number Publication date
US3728652A (en) 1973-04-17
DE2035663B2 (en) 1972-07-27
DE2035663A1 (en) 1971-05-06

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PE20 Patent expired after termination of 20 years