GB1345209A - Keyboard having magnetic holding and improved operator touch - Google Patents

Keyboard having magnetic holding and improved operator touch

Info

Publication number
GB1345209A
GB1345209A GB4398571A GB4398571A GB1345209A GB 1345209 A GB1345209 A GB 1345209A GB 4398571 A GB4398571 A GB 4398571A GB 4398571 A GB4398571 A GB 4398571A GB 1345209 A GB1345209 A GB 1345209A
Authority
GB
United Kingdom
Prior art keywords
push
button
plate
key
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
GB4398571A
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.)
Singer Co
Original Assignee
Singer Co
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 Singer Co filed Critical Singer Co
Publication of GB1345209A publication Critical patent/GB1345209A/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
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06C—DIGITAL COMPUTERS IN WHICH ALL THE COMPUTATION IS EFFECTED MECHANICALLY
    • G06C7/00—Input mechanisms
    • G06C7/02—Keyboards
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06C—DIGITAL COMPUTERS IN WHICH ALL THE COMPUTATION IS EFFECTED MECHANICALLY
    • G06C7/00—Input mechanisms
    • G06C7/02—Keyboards
    • G06C7/04—Interlocking devices, e.g. between keys
    • 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

Abstract

1345209 Keyboards for printers SINGER CO 21 Sept 1971 [4 Nov 1970] 43985/71 Heading B6F [Also in Division H1] In a push-button keyboard each switch comprises a push-button key 12 carrying a permanent magnet 40 co-operating with a sealed magnetic reed contact device 32 in the depressed position and with a magnetic keeper plate 23 in the upper position, the plate 23 having a resilient foam cushioning layer 24 on its upper surface to cushion downward movement of the pushbutton and a sound damping layer 28 on its lower surface effective on upward movement. Sound damping layer 28 also limits the magnetic holding force exerted by the permanent magnet 40 on plate 23. Projections 19 on opposite sides of the push-button 12 prevent the formation of a vacuum, when the push-button engages the cushioning layer 24. In Fig. 4 (not shown) the formation of a vacuum is precluded by providing longitudinal grooves in the key stem 16 which extend below plate 23 when the pushbutton key 12 is depressed. The magnet 40 is resiliently retained in a slot 42 of the stem. The contact device 32 may be mounted on a printed circuit board 32.
GB4398571A 1970-11-04 1971-09-21 Keyboard having magnetic holding and improved operator touch Expired GB1345209A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US8667870A 1970-11-04 1970-11-04
US22005372A 1972-01-24 1972-01-24

Publications (1)

Publication Number Publication Date
GB1345209A true GB1345209A (en) 1974-01-30

Family

ID=26775023

Family Applications (2)

Application Number Title Priority Date Filing Date
GB4398571A Expired GB1345209A (en) 1970-11-04 1971-09-21 Keyboard having magnetic holding and improved operator touch
GB533773A Expired GB1345210A (en) 1970-11-04 1971-09-21 Keyboard device

Family Applications After (1)

Application Number Title Priority Date Filing Date
GB533773A Expired GB1345210A (en) 1970-11-04 1971-09-21 Keyboard device

Country Status (6)

Country Link
US (2) US3693123A (en)
CA (1) CA953757A (en)
DE (1) DE2154549A1 (en)
FR (1) FR2112960A5 (en)
GB (2) GB1345209A (en)
NL (1) NL7115205A (en)

Families Citing this family (37)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5443327Y2 (en) * 1972-12-30 1979-12-14
US3940578A (en) * 1973-04-09 1976-02-24 Alphameric Keyboards Limited Keyboard structure having panel mounted key actuators with electrical component operating element
US3879602A (en) * 1973-06-11 1975-04-22 N Dimensions Keyboard
US3916360A (en) * 1974-08-09 1975-10-28 Singer Co Magnetic keyboard
JPS5155378U (en) * 1974-10-25 1976-04-28
DE2536736C2 (en) * 1975-08-18 1983-05-26 Siemens AG, 1000 Berlin und 8000 München Keyboard for data transmission
US4154997A (en) * 1976-06-25 1979-05-15 Cutler-Hammer, Inc. Miniature multi-contact pushbutton switch
US4203013A (en) * 1976-10-26 1980-05-13 Serras Paulet Edouard Alphanumeric control keyboard with depressible keys for electric or electronic machines
US4130744A (en) * 1977-04-25 1978-12-19 Bell Telephone Laboratories, Incorporated Cam actuated multiple contact spring switch
FR2443130A1 (en) * 1978-11-29 1980-06-27 Serras Paulet Edouard CONTROL KEYBOARD FOR ELECTRIC OR ELECTRONIC DEVICES
JPS594512Y2 (en) * 1979-04-19 1984-02-09 アルプス電気株式会社 push button mechanism
US4331945A (en) * 1980-09-23 1982-05-25 Cattani Ii Cyrus J Magnetically actuatable tamper switch assembly
US4513271A (en) * 1982-07-16 1985-04-23 Minnesota Mining And Manufacturing Company Momentary contact magnetic switch
FR2562320B1 (en) * 1984-03-28 1988-03-25 Telemecanique Electrique MODULAR CONSTRUCTIVE ELEMENT FOR THE PRODUCTION OF DIALOGUE APPARATUS BETWEEN AN OPERATOR AND AN INFORMATION PROCESSING SYSTEM
US5220318A (en) * 1988-12-22 1993-06-15 Ampex Corporation Apparatus for selectively varying keyboard switching force
US5057807A (en) * 1990-03-19 1991-10-15 Veetronix, Inc. Keyboard switch
DE4392581D2 (en) * 1992-06-09 1995-04-27 Bistekos Michael Georg Device for the programmable control of electrical or electronic devices
JP3939366B2 (en) * 1992-12-09 2007-07-04 松下電器産業株式会社 Keyboard input device
US5424725A (en) * 1993-02-25 1995-06-13 Motorola, Inc. Battery retainer with integral mechanical shock isolation
US5514866A (en) * 1993-10-04 1996-05-07 Industrial Innovations, Inc. Switch assembly
DE19514708C1 (en) * 1995-04-21 1996-08-08 Kostal Leopold Gmbh & Co Kg Rotationally symmetric electric switch influenced by permanent magnets
GB2323331B (en) 1997-03-21 2000-11-22 Simon Richard Daniel Collapsible keyboard
US6563434B1 (en) 1997-11-12 2003-05-13 Think Outside, Inc. System and method for detecting key actuation in a keyboard
US6791480B1 (en) 1998-12-04 2004-09-14 Alan K. Uke Method of preventing and/or alleviating repetitive use injury to electronic computer keyboard operator
US6734809B1 (en) * 1999-04-02 2004-05-11 Think Outside, Inc. Foldable keyboard
US6497521B1 (en) * 1999-12-17 2002-12-24 Daniel James Lohr No-impact keyboard
US6781077B2 (en) 2000-12-14 2004-08-24 Think Outside, Inc. Keyswitch and actuator structure
JP2003085721A (en) * 2001-09-14 2003-03-20 Mitsumi Electric Co Ltd Head feeding mechanism
US7038598B2 (en) * 2002-05-29 2006-05-02 Alan K. Uke Keyboard assemblies
US20040085716A1 (en) * 2002-11-05 2004-05-06 Uke Alan K. Modular keyboard system
US8279029B2 (en) * 2008-07-10 2012-10-02 Flextronics Automotive, Inc. Weatherproof switch for indoor and outdoor information clusters and function switches
US20100224473A1 (en) * 2009-03-03 2010-09-09 Coactive Technologies, Inc. Multi-function switch structure
DE102010047261B4 (en) * 2010-10-01 2013-04-25 Trw Automotive Electronics & Components Gmbh switching device
TW201501155A (en) * 2013-06-28 2015-01-01 Giga Byte Tech Co Ltd Keycap, key structure and keyboard having the same
US20160042897A1 (en) * 2014-08-11 2016-02-11 Apple Inc. Mechanisms having a magnetic latch and tactile feedback
US10965287B2 (en) * 2018-12-20 2021-03-30 Dexin Electronic Ltd. Replaceable key structure
US11631558B2 (en) * 2021-07-07 2023-04-18 Giuseppe Petix Container including illuminator with zipper-actuated switch having magnetic latch

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3657492A (en) * 1970-09-25 1972-04-18 Sperry Rand Corp Keyboard apparatus with moisture proof membrane

Also Published As

Publication number Publication date
GB1345210A (en) 1974-01-30
NL7115205A (en) 1972-05-08
FR2112960A5 (en) 1972-06-23
CA953757A (en) 1974-08-27
DE2154549A1 (en) 1972-05-10
US3693123A (en) 1972-09-19
US3736397A (en) 1973-05-29

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
732 Registration of transactions, instruments or events in the register (sect. 32/1977)
PCNP Patent ceased through non-payment of renewal fee