WO2002063646A3 - Keyswitch - Google Patents

Keyswitch Download PDF

Info

Publication number
WO2002063646A3
WO2002063646A3 PCT/US2001/049492 US0149492W WO02063646A3 WO 2002063646 A3 WO2002063646 A3 WO 2002063646A3 US 0149492 W US0149492 W US 0149492W WO 02063646 A3 WO02063646 A3 WO 02063646A3
Authority
WO
WIPO (PCT)
Prior art keywords
legs
keyswitch
protrusions
lower protrusions
leg
Prior art date
Application number
PCT/US2001/049492
Other languages
French (fr)
Other versions
WO2002063646A2 (en
Inventor
Robert Olodort
John Tang
Peter M Cazalet
Russell C Mead Jr
Original Assignee
Think Outside 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 Think Outside Inc filed Critical Think Outside Inc
Publication of WO2002063646A2 publication Critical patent/WO2002063646A2/en
Publication of WO2002063646A3 publication Critical patent/WO2002063646A3/en

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/02—Operating parts, i.e. for operating driving mechanism by a mechanical force external to the switch
    • H01H3/12—Push-buttons
    • H01H3/122—Push-buttons with enlarged actuating area, e.g. of the elongated bar-type; Stabilising means therefor
    • H01H3/125—Push-buttons with enlarged actuating area, e.g. of the elongated bar-type; Stabilising means therefor using a scissor mechanism as stabiliser
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2215/00—Tactile feedback
    • H01H2215/034—Separate snap action
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2227/00—Dimensions; Characteristics
    • H01H2227/036—Minimise height

Abstract

A keyswitch is described that may include two legs interleaved together without a pivot point approximately central to the legs. The keyswitch may also include a spring to engage at least one of the bottom surfaces of the legs. In one configuration, the legs of the keyswitch may each have two lower protrusions on one of their ends and upper protrusions on their other ends with the lower protrusions of one leg disposed between the lower protrusions of the other leg. The keyswitch may also include a base having retaining clips with each of the lower protrusions of the legs pivotally engaged with a corresponding retaining clip. The keyswitch may also include a cap having tabs that may be pivotally coupled with corresponding slots in the upper protrusions of the legs.
PCT/US2001/049492 2000-12-14 2001-10-26 Keyswitch WO2002063646A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US09/738,000 2000-12-14
US09/738,000 US6781077B2 (en) 2000-12-14 2000-12-14 Keyswitch and actuator structure

Publications (2)

Publication Number Publication Date
WO2002063646A2 WO2002063646A2 (en) 2002-08-15
WO2002063646A3 true WO2002063646A3 (en) 2002-11-21

Family

ID=24966146

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2001/049492 WO2002063646A2 (en) 2000-12-14 2001-10-26 Keyswitch

Country Status (2)

Country Link
US (1) US6781077B2 (en)
WO (1) WO2002063646A2 (en)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7780368B2 (en) * 2008-05-15 2010-08-24 International Business Machines Corporation Method and apparatus for reconfigurable key positioning on a keyboard
TWI364689B (en) * 2008-06-02 2012-05-21 Darfon Electronics Corp Key structure
TWM387357U (en) * 2010-03-19 2010-08-21 Darfon Electronics Corp Keyswitch and keyboard
US20120298496A1 (en) * 2011-05-26 2012-11-29 Changshu Sunrex Technology Co., Ltd. Press key and keyboard
US20130257731A1 (en) * 2012-04-03 2013-10-03 Cheng Uei Precision Industry Co., Ltd. Mouse structure
US9218927B2 (en) * 2012-08-06 2015-12-22 Synaptics Incorporated Touchsurface assembly with level and planar translational responsiveness via a buckling elastic component
US9098250B2 (en) * 2013-07-17 2015-08-04 Lenovo (Singapore) Pte. Ltd. Computer assembly incorporating coupling within pantograph
US10090121B2 (en) 2016-09-20 2018-10-02 Microsoft Technology Licensing, Llc Thin keyboard device
TWI598916B (en) * 2016-12-14 2017-09-11 致伸科技股份有限公司 Keyboard
TWI623954B (en) * 2017-01-06 2018-05-11 致伸科技股份有限公司 Keyboard
TWI623955B (en) * 2017-02-17 2018-05-11 致伸科技股份有限公司 Keyboard
US10620715B2 (en) * 2017-03-20 2020-04-14 International Business Machines Corporation Programmatic, pluggable keyboard
TWI667677B (en) * 2018-08-20 2019-08-01 群光電子股份有限公司 keyboard
US10965287B2 (en) * 2018-12-20 2021-03-30 Dexin Electronic Ltd. Replaceable key structure
US10984968B2 (en) 2019-05-22 2021-04-20 Darfon Electronics Corp. Keyswitch structure
TWI760187B (en) * 2021-04-15 2022-04-01 達方電子股份有限公司 Lifting mechanism and key structure using the same

Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3969600A (en) * 1975-06-11 1976-07-13 Burroughs Corporation Tactile feedback keyboard switch assembly and actuator
JPS5596516A (en) * 1979-01-19 1980-07-22 Pioneer Communications Kk Switch
US4423294A (en) * 1982-06-17 1983-12-27 The Hall Company Laminate switch assembly having improved durability
US4793601A (en) * 1982-09-09 1988-12-27 Alcatel N.V. Key spring
JPH05109333A (en) * 1991-10-14 1993-04-30 Nec Tohoku Ltd Supporting device for key-top
JPH06103851A (en) * 1992-09-17 1994-04-15 Fujitsu Ltd Membrane switch for flat keyboard
EP0660355A1 (en) * 1993-12-22 1995-06-28 Fuji Electric Co., Ltd. Iron core retaining structure of electromagnetic contactor
GB2315162A (en) * 1996-07-08 1998-01-21 Behavior Tech Computer Corp Keyboard switch
US5779030A (en) * 1996-11-27 1998-07-14 Samsung Electro-Mechanics Co., Ltd. Key board
JPH11111101A (en) * 1997-10-08 1999-04-23 Smk Corp Guide mechanism for key top
US5986227A (en) * 1997-01-08 1999-11-16 Hon Hai Precision Ind. Co., Ltd. Keyswitch key apparatus
EP0966010A2 (en) * 1998-06-18 1999-12-22 Fujitsu Takamisawa Component Limited Key switch and keyboard
EP1049119A2 (en) * 1999-04-26 2000-11-02 Alps Electric Co., Ltd. Keyswitch used in a keyboard

Family Cites Families (273)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR373199A (en) 1906-12-20 1907-05-04 Frederick George Winkler Improvements to springs
US1982706A (en) 1932-10-21 1934-12-04 Perfect Circle Co Expanding means for pistons
US2604315A (en) 1948-06-12 1952-07-22 Herman W Patterson Spring device
US2550250A (en) 1949-05-06 1951-04-24 Ruth E W Huppert Electric pushbutton
NL109683C (en) 1958-11-21
US3174685A (en) 1962-10-17 1965-03-23 Automatic Voting Machine Corp Voting machine
US3499515A (en) 1967-12-11 1970-03-10 Synergistics Inc Modular electrical keyboard
US3576569A (en) 1968-10-02 1971-04-27 Hewlett Packard Co Plural matrix keyboard with electrical interlock circuit
US3574335A (en) 1969-11-26 1971-04-13 Olympia Werke Ag Keyboard with interconnected keys
US3703040A (en) 1970-07-06 1972-11-21 Raymond Roger Hill Keyboard teaching aid
US3693123A (en) 1970-11-04 1972-09-19 Singer Co Keyboard having magnetic latching and improved operator touch
US4390866A (en) 1971-05-19 1983-06-28 Illinois Tool Works Inc. Keyboard with electronic hysteresis
US3774309A (en) 1972-06-19 1973-11-27 N Leopoldi Steel measuring tape holder
USRE29440E (en) 1973-01-02 1977-10-11 Bowmar Instrument Corporation Calculator keyboard switch with disc spring contact and printed circuit board
USRE30923E (en) 1973-01-02 1982-05-04 Bowmar Instrument Corporation Calculator keyboard switch with disc spring contact and printed circuit board
JPS49111174A (en) 1973-02-23 1974-10-23
JPS572511B2 (en) 1973-05-08 1982-01-16
US3849611A (en) 1973-05-21 1974-11-19 Controls Res Corp Manually operable keyboard switch assembly
US3909564A (en) 1974-08-08 1975-09-30 Amp Inc Keyboard assembly with foldable printed circuit matrix switch array, and key actuator locking slide plate
US3940758A (en) 1974-09-20 1976-02-24 Margolin George D Expandable keyboard for electronic pocket calculators and the like
US3996427A (en) 1975-01-10 1976-12-07 Texas Instruments Incorporated Pushbutton keyboard system and method of making same
CH590415A5 (en) 1975-04-28 1977-08-15 Bbc Brown Boveri & Cie
US3999319A (en) 1976-02-17 1976-12-28 Musgrave Daniel D Dormant spring
US4066850A (en) 1976-06-04 1978-01-03 Ncr Corporation Keyboard switch assembly having interchangeable cover plate, indicating layer and actuator switch assembly in any operative combination
FR2371267A1 (en) 1976-11-19 1978-06-16 Charmilles Sa Ateliers PROCESS AND DEVICE FOR MACHINING BY EROSIVE SPARKLING
US4375017A (en) 1976-12-06 1983-02-22 Rca Corporation Calculator type keyboard including printed circuit board contacts and method of forming
US4070764A (en) 1976-12-10 1978-01-31 Rohlinger Daniel P Level and collapsible ruler
US4092527A (en) 1977-01-31 1978-05-30 Texas Instruments Incorporated Calculator with interchangeable keyset
USD254554S (en) 1978-03-23 1980-03-25 Bell Telephone Laboratories, Incorporated Folding keyboard pad
JPS583233Y2 (en) 1978-04-06 1983-01-20 シャープ株式会社 Thin key
JPS5912043B2 (en) 1979-07-14 1984-03-21 株式会社日立製作所 Channel selection device
JPS5932850B2 (en) 1979-12-10 1984-08-11 富士通株式会社 Manufacturing method of push button switch
US4314113A (en) 1980-01-21 1982-02-02 Burroughs Corporation Keyswitch having contacts mounted on cantilever beams
US4354068A (en) 1980-02-04 1982-10-12 Texas Instruments Incorporated Long travel elastomer keyboard
US4517660A (en) 1980-03-27 1985-05-14 Canon Kabushiki Kaisha Foldable electronic apparatus
GB2077195B (en) 1980-06-07 1984-05-16 Burroughs Corp Stabilised button for an electrical keyboard
US4362911A (en) 1980-09-17 1982-12-07 Ncr Corporation Membrane keyboard switch assembly having selectable tactile properties
US4360716A (en) 1980-10-01 1982-11-23 Texas Instruments Incorporated Area actuated switch array
US4368364A (en) 1980-12-03 1983-01-11 Load Cells Inc. Key mechanism
US4371760A (en) 1981-03-05 1983-02-01 Apple Computer, Inc. Keyboard switch having combined actuator and jumper contact structure
USRE32419E (en) 1981-03-16 1987-05-12 Engineering Research Applications, Inc. Molded keyboard and method of fabricating same
US4366463A (en) 1981-05-22 1982-12-28 Cooper Industries, Inc. Keyboard
US4440990A (en) 1982-05-19 1984-04-03 Smk Electronics Corporation, Usa Membrane keyboard assembly
US4433225A (en) 1983-02-22 1984-02-21 General Instrument Corporation Keytop levelling mechanism
US5289394A (en) 1983-05-11 1994-02-22 The Laitram Corporation Pocket computer for word processing
US4560844A (en) 1983-07-11 1985-12-24 Brother Kogyo Kabushiki Kaisha Key-holding structure of a keyboard with curved operating surface of keys
US4453063A (en) 1983-08-03 1984-06-05 Illinois Tool Works Inc. Keyswitch configuration with torque rod holder
DE3329698A1 (en) 1983-08-17 1985-03-07 Preh, Elektrofeinmechanische Werke Jakob Preh Nachf. Gmbh & Co, 8740 Bad Neustadt PRINT BUTTON
US4633227A (en) 1983-12-07 1986-12-30 Itt Corporation Programmable keyboard for a typewriter or similar article
US4597681A (en) 1983-12-15 1986-07-01 Hodges Anthony N Adjustable keyboard
NO157596C (en) 1983-12-16 1988-09-27 Alf Lange DEVICE FOR PRESENTATION OF INFORMATION.
US4661005A (en) 1984-01-16 1987-04-28 Creative Associates Spittable keyboard for word processing, typing and other information input systems
US4638151A (en) 1984-05-25 1987-01-20 Canon Kabushiki Kaisha Keyboard of an electronic apparatus
US4605828A (en) 1984-05-29 1986-08-12 International Business Machines Corporation Membrane keyboard switch mounting
JPS6162117A (en) 1984-09-03 1986-03-31 Brother Ind Ltd Keyboard
US4582967A (en) 1984-10-22 1986-04-15 Tec, Inc. Key switch assembly
NZ215956A (en) 1985-04-29 1988-07-28 Macfarlane A & K Pty Ltd Variable keystroke pressure keyboard: pressure regulated bag compressible between the keyboard base and keys
USD299030S (en) 1985-08-09 1988-12-20 Alcatel Usa, Corp. Voice and data communication terminal
US4771146A (en) 1985-08-19 1988-09-13 Alps Electric Co., Ltd. Keyboard key top mounting structure
US4885430A (en) 1986-05-29 1989-12-05 Hewlett-Packard Company Flexible printed circuit assembly with torsionly rotated conductors
US5167100A (en) 1986-06-12 1992-12-01 Anandasivam Krishnapillai Deployable structures
US5416498A (en) 1986-10-21 1995-05-16 Ergonomics, Inc. Prehensile positioning computer keyboard
US5339097A (en) 1986-10-21 1994-08-16 Grant Alan H Computer keyboard
US4739451A (en) 1986-12-31 1988-04-19 Wang Laboratories, Inc. Modularly expandable desktop keyboard
US4848828A (en) 1987-03-24 1989-07-18 Hunt-Davis, Inc. Expandable cover for an open enclosure
JP2501583B2 (en) 1987-06-05 1996-05-29 株式会社共立 Recoil device
DE8708373U1 (en) 1987-06-13 1987-08-13 Preh, Elektrofeinmechanische Werke Jakob Preh Nachf. Gmbh & Co, 8740 Bad Neustadt, De
US4914999A (en) 1987-09-04 1990-04-10 Yamaha Corporation Keyboard assembly for forming keyboard apparatus of electronic musical instrument
JPH01100227U (en) 1987-12-22 1989-07-05
US4815784A (en) 1988-02-05 1989-03-28 Yu Zheng Automobile sunshield
EP0328801B1 (en) 1988-02-16 1993-01-27 Lexmark International, Inc. Improvements relating to membrane keyboards
US4885891A (en) 1988-08-30 1989-12-12 Lynch James P Reinforcement member for an extendible scissors truss
JPH0521134Y2 (en) 1988-09-26 1993-05-31
US5047952A (en) 1988-10-14 1991-09-10 The Board Of Trustee Of The Leland Stanford Junior University Communication system for deaf, deaf-blind, or non-vocal individuals using instrumented glove
US4942700A (en) 1988-10-27 1990-07-24 Charles Hoberman Reversibly expandable doubly-curved truss structure
CA1334742C (en) 1988-12-27 1995-03-14 An Wang Keyboard with finger-actuable and stylus-actuable keys
US5070330A (en) 1989-01-12 1991-12-03 Acer Incorporated Keyboard scanning matrix
US5210846B1 (en) 1989-05-15 1999-06-29 Dallas Semiconductor One-wire bus architecture
JPH02304665A (en) 1989-05-19 1990-12-18 Casio Comput Co Ltd Miniature electronic equipment
USD324035S (en) 1989-06-06 1992-02-18 Kabushiki Kaisha Toshiba Electronic computer
USD322246S (en) 1989-06-06 1991-12-10 Kabushiki Kaisha Toshiba Electronic computer
US5003140A (en) 1989-06-26 1991-03-26 International Business Machines Corporation Long keybutton stabilizer
IT1232530B (en) 1989-06-29 1992-02-19 Olivetti & Co Spa CONTACT KEYBOARD
US5067834A (en) 1989-07-07 1991-11-26 Szmanda Jeffrey P Input keyboard apparatus for information processing device and other keyboard devices
IL91076A (en) 1989-07-23 1993-02-21 Israel D Nebenzahl Configurable keyboard
US5038812A (en) 1989-08-18 1991-08-13 Spring Form, Inc. Quickly erectable, quickly collapsible, self supporting portable structure
US5252971A (en) 1989-09-26 1993-10-12 Home Row, Inc. Data acquisition in a multi-function keyboard system which corrects for preloading of force sensors
US5049862A (en) 1989-10-06 1991-09-17 Communication Intelligence Corporation ("Cic") Keyless flat panel portable computer--computer aided notebook
US5283862A (en) 1989-10-11 1994-02-01 Lund Alan K Notebook computer with reversible cover for external use of membrane switch screen
US5035460A (en) 1989-10-13 1991-07-30 Huang En L Automobile window protector
US5024262B1 (en) 1989-10-13 1994-07-12 En L Huang Compactly foldable automobile sunshade
US5056172A (en) 1989-12-19 1991-10-15 Richard Kaiser Method of folding a beach blanket
US4951333A (en) 1989-12-19 1990-08-28 Richard Kaiser Beach blanket
US5141343A (en) 1990-01-18 1992-08-25 William H. Roylance Compressible/expandable keyboard with adjustable key spacing
US5044798A (en) 1990-01-18 1991-09-03 William H. Roylance Compressible/expandable keyboard with adjustable key spacing
US5115106A (en) 1990-04-20 1992-05-19 Honeywell Inc. Momentary "on" switch suitable for keyboards
US5268817A (en) 1990-04-27 1993-12-07 Kabushiki Kaisha Toshiba Portable computer with keyboard and having display with coordinate input tablet rotatably mounted to face either toward or away from keyboard when closed over keyboard
US5575576A (en) 1990-05-25 1996-11-19 Roysden, Jr.; Brunn W. Keyboard
US5122786A (en) 1990-06-27 1992-06-16 Freeman Rader Ergonomic keypads for desktop and armrest applications
US5269004A (en) 1990-06-28 1993-12-07 International Business Machines Corporation System for integrating pointing functions into computer keyboard with lateral movement of keyswitch mounting plate causing strain and control signal
JP3261421B2 (en) 1990-07-10 2002-03-04 ゴールドスタイン テクノロジー ピーティーワイ．リミテッド． keyboard
JPH0498351A (en) 1990-08-09 1992-03-31 Sharp Corp Portable terminal equipment
US5054849A (en) 1990-08-13 1991-10-08 Richard Hoff Ultra-portable collapsible chair
US5280283A (en) 1990-11-09 1994-01-18 Ast Research, Inc. Memory mapped keyboard controller
US5267127A (en) 1990-11-30 1993-11-30 International Business Machines Corp. Personal computer with folding and sliding keyboard
US5198991A (en) 1990-11-30 1993-03-30 International Business Machines Corp. Personal computer with dissociated keyboard
US5324958A (en) 1991-02-19 1994-06-28 Synaptics, Incorporated Integrating imaging systgem having wide dynamic range with sample/hold circuits
JP2768030B2 (en) 1991-02-21 1998-06-25 日本電気株式会社 Flat keyboard switch
US5212473A (en) 1991-02-21 1993-05-18 Typeright Keyboard Corp. Membrane keyboard and method of using same
JP2990224B2 (en) 1991-02-27 1999-12-13 沖電気工業株式会社 Push button switch and method of manufacturing the same
DE4108096C2 (en) 1991-03-13 1995-02-16 Marquardt Gmbh Keyboard layout
JPH04315250A (en) 1991-04-12 1992-11-06 Matsushita Electric Ind Co Ltd Electronic equipment device
US5341133A (en) 1991-05-09 1994-08-23 The Rowland Institute For Science, Inc. Keyboard having touch sensor keys for conveying information electronically
US5321795A (en) 1991-05-24 1994-06-14 Alvarez De Toledo Santiago Pattern association central subsystem and a perception learning system
US5393150A (en) 1991-09-05 1995-02-28 Fort; Chris Bifurcated keyboard arrangement
US5212372A (en) 1991-09-09 1993-05-18 Psc, Inc. Portable transaction terminal for optical and key entry of data without keyboards and manually actuated scanners
US5310973A (en) 1991-10-08 1994-05-10 Silitek Corporation Structure of key switch
US5187644A (en) 1991-11-14 1993-02-16 Compaq Computer Corporation Compact portable computer having an expandable full size keyboard with extendable supports
US5280147A (en) 1991-11-19 1994-01-18 Brother Kogyo Kabushiki Kaisha Keyswitch assembly with a key support limiting transverse, longitudinal and rotational movement of the key
US5278372A (en) 1991-11-19 1994-01-11 Brother Kogyo Kabushiki Kaisha Keyboard having connecting parts with downward open recesses
US5440502A (en) 1991-12-26 1995-08-08 Dell Usa, L.P. Stylus operable computer with wireless keyboard in storage bay
US5398585A (en) 1991-12-27 1995-03-21 Starr; Harvey Fingerboard for musical instrument
US5341154A (en) 1991-12-27 1994-08-23 Bird Gregory F Portable personal computer
US5557057A (en) 1991-12-27 1996-09-17 Starr; Harvey W. Electronic keyboard instrument
US5220521A (en) 1992-01-02 1993-06-15 Cordata Incorporated Flexible keyboard for computers
US5137384A (en) 1992-01-27 1992-08-11 Spencer Jeffery B Ergonomic-interface keyboard system
US5215187A (en) 1992-01-31 1993-06-01 Acer Incorporated Keyboard membrane keyswitch assembly
JP2595132Y2 (en) 1992-02-14 1999-05-24 ブラザー工業株式会社 Key switch
US5278371A (en) 1992-02-14 1994-01-11 Brother Kogyo Kabushiki Kaisha Keyswitch assembly with support mechanism coupled to support plate beneath printed circuit board
US5163765A (en) 1992-03-04 1992-11-17 Apple Computer, Inc. Collapsible keyboard
US5410333A (en) 1992-03-18 1995-04-25 Conway; Kevin M. Computer keyboard
JP2590622Y2 (en) 1992-03-30 1999-02-17 ブラザー工業株式会社 Key switch device
US5351843A (en) 1992-04-27 1994-10-04 William J. Wichman Folding display frame for forming column-like structures
US5438177A (en) 1992-05-06 1995-08-01 Key Tronic Corporation Two-layer membrane switch
US5579033A (en) 1992-05-20 1996-11-26 International Business Machines Corporation Pointing device for retrofitting onto the keyboard of an existing computer system
US5355149A (en) 1992-05-27 1994-10-11 Spacelabs Medical, Inc. Scanning system for touch screen keyboards
US5295089A (en) 1992-05-28 1994-03-15 Emilio Ambasz Soft, foldable consumer electronic products
JP2577359Y2 (en) 1992-06-09 1998-07-23 ブラザー工業株式会社 Key switch device
TW367513B (en) 1992-06-11 1999-08-21 Alps Electric Co Ltd Key switch
US5306886A (en) 1992-06-15 1994-04-26 Smk Co., Ltd. Keyboard switch
US5457453A (en) 1992-06-15 1995-10-10 Chiu; Wilson L. Folding keyboard
US5278779A (en) 1992-06-26 1994-01-11 Conway Kevin M Laptop computer with hinged keyboard
JPH0635565A (en) 1992-07-13 1994-02-10 Fujitsu Ltd Portable information equipment
JP2950391B2 (en) 1992-07-17 1999-09-20 ブラザー工業株式会社 Key switch device assembling method
US5336001A (en) 1992-08-04 1994-08-09 Lichtenberg Allan C Maximum comfort keyboard
US5298706A (en) 1992-08-13 1994-03-29 Key Tronic Corporation Membrane computer keyboard and improved key structure
US5481074A (en) 1992-08-18 1996-01-02 Key Tronic Corporation Computer keyboard with cantilever switch and actuator design
US5360955A (en) 1992-08-18 1994-11-01 Key Tronic Corporation Computer keyboard with cantilever switch design and improved PCB/switch membrane interface
US5378069A (en) 1992-08-24 1995-01-03 Product Engineering & Mfg., Inc. Environmentally safe touch typing keyboard
US5422447A (en) 1992-09-01 1995-06-06 Key Tronic Corporation Keyboard with full-travel, self-leveling keyswitches and return mechanism keyswitch
JP2666030B2 (en) 1992-09-21 1997-10-22 昭和高分子株式会社 Method for producing aqueous silicone-based graft copolymer emulsion
US5504283A (en) 1992-10-28 1996-04-02 Brother Kogyo Kabushiki Kaisha Key switch device
US5287245A (en) 1992-11-13 1994-02-15 International Business Machines Corporation Computer having ejectable keyboard ejected by damping device
US5339213A (en) 1992-11-16 1994-08-16 Cirque Corporation Portable computer touch pad attachment
US5394959A (en) 1992-12-15 1995-03-07 Simon Aerials, Inc. Scissor lift apparatus for work platforms and the like
US5268545A (en) 1992-12-18 1993-12-07 Lexmark International, Inc. Low profile tactile keyswitch
JP2800617B2 (en) 1993-01-06 1998-09-21 ブラザー工業株式会社 Key switch
US5355148A (en) 1993-01-14 1994-10-11 Ast Research, Inc. Fingerpoint mouse
DE9303837U1 (en) 1993-03-16 1993-07-01 Preh-Werke Gmbh & Co Kg, 8740 Bad Neustadt, De
US5426449A (en) 1993-04-20 1995-06-20 Danziger; Paul Pyramid shaped ergonomic keyboard
US5345362A (en) 1993-04-29 1994-09-06 Medtronic, Inc. Portable computer apparatus with articulating display panel
GB9310045D0 (en) 1993-05-15 1993-06-30 Int Computers Ltd Portable computer
US5502460A (en) 1993-05-26 1996-03-26 Bowen; James H. Ergonomic laptop computer and ergonomic keyboard
US5644338A (en) 1993-05-26 1997-07-01 Bowen; James H. Ergonomic laptop computer and ergonomic keyboard
US5324902A (en) 1993-06-21 1994-06-28 Shen Chen T Mechanical key switch for a membrane keyboard
US5349303A (en) 1993-07-02 1994-09-20 Cirque Corporation Electrical charge transfer apparatus
US5388922A (en) 1993-07-23 1995-02-14 Smith Corona Corporation Miniature keyboard
US5459461A (en) 1993-07-29 1995-10-17 Crowley; Robert J. Inflatable keyboard
UA27075C2 (en) 1993-09-07 2000-02-28 Денніс У. Нассер Apparatus for data input
US5591927A (en) 1993-09-17 1997-01-07 Yamaha Corporation Keyboard musical instrument having key action mechanisms movable to and from strings
US5424516A (en) 1993-09-23 1995-06-13 Emmons; Charles E. Low profile pushbutton switch
JP3201102B2 (en) 1993-11-05 2001-08-20 ブラザー工業株式会社 Key switch device and method of assembling the same
US5454652A (en) 1993-11-12 1995-10-03 Lexmark International, Inc. Adjustable keyboard
US5439304A (en) 1993-11-22 1995-08-08 Michael Phillips Keyboard
DE4343500A1 (en) 1993-12-20 1995-06-22 Forschungszentrum Juelich Gmbh Device for avoiding overpressures in storage containers with hydrogen-developing content
GB2285770B (en) 1994-01-18 1997-05-21 Silitek Corp Keyboard
JP3396942B2 (en) 1994-02-21 2003-04-14 三菱化学株式会社 Method for producing aromatic polycarbonate
DE4408330A1 (en) 1994-03-11 1995-09-14 Cherry Mikroschalter Gmbh Ergonomic keyboard
US5659307A (en) 1994-03-23 1997-08-19 International Business Machines Corporation Keyboard with biased movable keyboard sections
US5543787A (en) 1994-03-23 1996-08-06 International Business Machines Corporation Keyboard with translating sections
US5596480A (en) 1994-03-28 1997-01-21 Zenith Data Systems Corporation Split rotatable keyboard
US5457297A (en) 1994-04-20 1995-10-10 Chen; Pao-Chin Computer keyboard key switch
US5476332A (en) 1994-05-31 1995-12-19 Cleveland, Jr.; Ralph H. Symmetrical keyboard apparatus
US5519569A (en) 1994-06-30 1996-05-21 Compaq Computer Corporation Compact notebook computer having a foldable and collapsible keyboard structure
US5677826A (en) 1994-06-30 1997-10-14 Compaq Computer Corporation Double spring collapsible keyboard structure for a notebook computer, responsive to opening and closing of the computer's lid via relatively shiftable key support structure and shift member
US5590020A (en) * 1994-06-30 1996-12-31 Compaq Computer Corporation Collapsible notebook computer keyboard structure with resiliently deflectable key cap skirts
US5532904A (en) 1994-06-30 1996-07-02 Compaq Computer Corporation Collapsible keyboard structure for a notebook computer, responsive to opening and closing of the computer's lid
US5621610A (en) 1994-06-30 1997-04-15 Compaq Computer Corporation Collapsible computer keyboard structure with associated collapsible pointing stick
US5587875A (en) 1994-06-30 1996-12-24 Compaq Computer Corporation Collapsible notebook computer keyboard structure with horizontally and downwardly shiftable key return domes
US5602715A (en) * 1994-06-30 1997-02-11 Compaq Computer Corporation Collapsible keyboard structure for a notebook computer, responsive to opening and closing of the computer's lid via relatively shiftable key support member and shift member
US5735390A (en) 1994-07-20 1998-04-07 Brother Kogyo Kabushiki Kaisha Keyswitch device
DE69504602T2 (en) 1994-07-20 1999-03-18 Brother Ind Ltd Push button
KR960014161B1 (en) 1994-07-23 1996-10-14 삼성전자 주식회사 Circuit for detecting input signal from keyboard
JP3540377B2 (en) 1994-08-03 2004-07-07 ミネベア株式会社 Push button switch
JP3201175B2 (en) 1994-10-20 2001-08-20 ブラザー工業株式会社 Key switch
US5499857A (en) 1994-11-18 1996-03-19 Lynch, Jr.; Robert W. Folding chair
JP2779604B2 (en) 1994-12-19 1998-07-23 エスエムケイ株式会社 Key switch
US5635928A (en) 1994-12-23 1997-06-03 Brother Kogyo Kabushiki Kaisha Data processing device with a keyboard having pop-up keys
EP0725330A3 (en) 1995-01-24 1997-03-12 Hewlett Packard Co Computer keyboard with power control key
DE19502704A1 (en) 1995-01-28 1996-08-01 Horst Tauber Expandable personal computer design
US5653543A (en) 1995-07-19 1997-08-05 Hosiden Corporation Folding keyboard
JPH0945181A (en) 1995-07-28 1997-02-14 Brother Ind Ltd Key switch device
DE19529492A1 (en) 1995-08-10 1997-02-13 Cherry Mikroschalter Gmbh Keyboard with simplified switch mat including fixation devices
TW281743B (en) 1995-08-11 1996-07-21 Fujitoru Takamisawa Parts Co Ltd Keyswitch having a reduced height and a keyboard using such a keyswitch
US5525979A (en) 1995-08-14 1996-06-11 Lexmark International, Inc. Low configuration keyboard
US5758763A (en) 1995-08-17 1998-06-02 Hosiden Corporation Pantograph type keyboard switch
US5684279A (en) 1995-09-12 1997-11-04 Key Tronic Corporation Computer keyboard with improved membrane keyswitch structure having deflection concentration feature
US5610601A (en) 1995-09-19 1997-03-11 Vlsi Technology, Inc. Multi-purposes keyboard interface
GB9519557D0 (en) 1995-09-26 1995-11-29 Psion Plc Key assembly
GB9519556D0 (en) 1995-09-26 1995-11-29 Psion Plc Casing for computing equipment
KR100204158B1 (en) 1995-10-06 1999-06-15 윤종용 Devidable keyboard
US5625532A (en) 1995-10-10 1997-04-29 Compaq Computer Corporation Reduced height keyboard structure for a notebook computer
US5687058A (en) 1995-10-11 1997-11-11 Mallinckrodt & Mallinckrodt Method and apparatus for reducing at least one dimension of a computer keyboard for transportation and storage
KR100204945B1 (en) 1995-10-12 1999-06-15 윤종용 Rotation control apparatus of keyboard of notebook computer
JP3461071B2 (en) 1995-11-09 2003-10-27 長野富士通コンポーネント株式会社 keyboard
US5774384A (en) 1995-12-13 1998-06-30 Dell, U.S.A., L.P. Keyboard with elevatable keys
US5595449A (en) 1995-12-21 1997-01-21 Delco Electronics Corporation Inflatable keyboard
US5933320A (en) 1995-12-22 1999-08-03 Texas Instruments Incorporated Computer having a collapsible keyboard structure
US5588759A (en) 1996-01-09 1996-12-31 Micron Technology, Inc. Wrist support for expandable keyboards
US5712760A (en) 1996-01-26 1998-01-27 Texas Instruments Incorporated Compact foldable keyboard
US5870034A (en) 1996-03-01 1999-02-09 Texas Instruments Incorporated Compact computing device having a compressible keyboard
US5769551A (en) 1996-04-09 1998-06-23 Acer Advanced Labs, Inc. Expandable keyboard for a portable computer
US5630501A (en) 1996-04-12 1997-05-20 Shin Jiuh Corp. Computer key
JPH1064362A (en) 1996-08-21 1998-03-06 Alps Electric Co Ltd Keyboard device
JPH1064361A (en) 1996-08-21 1998-03-06 Alps Electric Co Ltd Keyboard device
US5763842A (en) 1996-11-19 1998-06-09 Chicony Electronics Co., Ltd. Key switch arrangement for notebook computers
DE19648802A1 (en) 1996-11-26 1998-05-28 Frank Naegele Computer keyboard for on line services
US5733056A (en) 1996-12-05 1998-03-31 Meagher; Edward C. Portable keyboard
US5767464A (en) 1996-12-05 1998-06-16 Texas Instruments Incorporated Electronic device low profile keyboard switch assembly with deployed and stored actuating mechanism
US5971637A (en) 1996-12-10 1999-10-26 Texas Instruments Incorporated Low profile keyboard
JPH10188720A (en) 1996-12-26 1998-07-21 Smk Corp Keyboard switch
US5703578A (en) 1997-01-16 1997-12-30 International Business Machines Corporation Folding keyboard
US5874697A (en) 1997-02-14 1999-02-23 International Business Machines Corporation Thin keyboard switch assembly with hinged actuator mechanism
US5933133A (en) 1997-02-18 1999-08-03 Lohr; Daniel James Low-impact keyboard
US5828015A (en) 1997-03-27 1998-10-27 Texas Instruments Incorporated Low profile keyboard keyswitch using a double scissor movement
US5943041A (en) 1997-04-23 1999-08-24 International Business Machines Corporation Folding keyboard
US5898145A (en) 1997-05-07 1999-04-27 Shin Jiuh Corp. Computer key
JP3456111B2 (en) 1997-05-29 2003-10-14 松下電器産業株式会社 Push button switch and method of manufacturing the same
US5926364A (en) 1997-05-30 1999-07-20 International Business Machines Corporation Tri-fold personal computer with touchpad and keyboard
TW347121U (en) 1997-06-07 1998-12-01 Hon Hai Prec Ind Co Ltd Press button apparatus
US5847337A (en) 1997-07-09 1998-12-08 Chen; Pao-Chin Structure of computer keyboard key switch
US6028768A (en) 1997-07-30 2000-02-22 International Business Machines Corporation Mechanism for deploying a keyboard for a portable computer
US5829579A (en) 1997-08-11 1998-11-03 Tsai; Huo-Lu Key switch assembly for a computer keyboard
US5973281A (en) * 1997-08-25 1999-10-26 Tsai; Huo-Lu Key switch assembly for computer keyboard
US5823324A (en) 1997-08-25 1998-10-20 Tsai; Huo-Lu Key switch assembly for a computer keyboard
USD416003S (en) 1997-08-27 1999-11-02 Vadem Notebook computer housing
US6005767A (en) 1997-11-14 1999-12-21 Vadem Portable computer having articulated display
US5934454A (en) 1997-10-10 1999-08-10 International Business Machines Corporation Thin keyboard having multiple hinge members per keyswitch
WO1999024962A1 (en) * 1997-11-12 1999-05-20 Think Outside System and method for detecting key actuation in a keyboard
US6005209A (en) 1997-11-24 1999-12-21 International Business Machines Corporation Thin keyboard having torsion bar keyswitch hinge members
US5842798A (en) 1997-12-04 1998-12-01 Shin Jiuh Corp. Computer key
US5990433A (en) 1997-12-17 1999-11-23 Thomas & Betts International, Inc. Molded electrical switch
US5995025A (en) 1997-12-18 1999-11-30 Daniel I. Sternglass Folding keyboard with sliding segments for electronic products
US5850194A (en) 1997-12-22 1998-12-15 Peripheral Technology, Inc. Computer key
TW418412B (en) 1998-01-19 2001-01-11 Hosiden Corp Keyboard switch
JP3749371B2 (en) 1998-02-06 2006-02-22 ミネベア株式会社 Push button switch
US5964341A (en) 1998-02-26 1999-10-12 Tsai; Huo-Lu Key switch assembly for a computer keyboard
US5878872A (en) 1998-02-26 1999-03-09 Tsai; Huo-Lu Key switch assembly for a computer keyboard
US5994655A (en) 1998-02-26 1999-11-30 Tsai; Huo-Lu Key switch assembly for a computer keyboard
TW389372U (en) 1998-05-13 2000-05-01 Acer Peripherals Inc Push button switch device
TW378768U (en) 1998-05-22 2000-01-01 Hon Hai Prec Ind Co Ltd Push button apparatus
US6137676A (en) 1998-05-22 2000-10-24 Compaq Computer Corporation Collapsible keyboard mechanism with integrated LCD display
JP3692496B2 (en) 1998-05-25 2005-09-07 沖電気工業株式会社 Key switch structure
TW470191U (en) 1998-06-25 2001-12-21 Hon Hai Prec Ind Co Ltd Inlaying structure of keyboard
US5947616A (en) 1998-08-24 1999-09-07 Liang; Hui-Hu Key structure for computer keyboards
US5941648A (en) 1998-10-21 1999-08-24 Olivetti Office U.S.A., Inc. Personal digital assistant having a foldable keyboard component
JP3794843B2 (en) 1998-11-26 2006-07-12 アルプス電気株式会社 Keyboard device
US6004051A (en) 1998-12-18 1999-12-21 Silitek Corporation Key structure of computer keyboard
US5997196A (en) 1998-12-18 1999-12-07 Silitek Corporation Key structure of computer keyboard
TW385029U (en) 1998-12-31 2000-03-11 Hon Hai Prec Ind Co Ltd Combination device for key of keyboard
US6040540A (en) 1999-01-13 2000-03-21 Chicony Electronics Co., Ltd. Keyswitch structure
JP3689843B2 (en) * 1999-08-27 2005-08-31 ミネベア株式会社 Key switch
US6091036A (en) * 1999-10-18 2000-07-18 Silitek Corporation Keyswitch for computer keyboards

Patent Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3969600A (en) * 1975-06-11 1976-07-13 Burroughs Corporation Tactile feedback keyboard switch assembly and actuator
JPS5596516A (en) * 1979-01-19 1980-07-22 Pioneer Communications Kk Switch
US4423294A (en) * 1982-06-17 1983-12-27 The Hall Company Laminate switch assembly having improved durability
US4793601A (en) * 1982-09-09 1988-12-27 Alcatel N.V. Key spring
JPH05109333A (en) * 1991-10-14 1993-04-30 Nec Tohoku Ltd Supporting device for key-top
JPH06103851A (en) * 1992-09-17 1994-04-15 Fujitsu Ltd Membrane switch for flat keyboard
EP0660355A1 (en) * 1993-12-22 1995-06-28 Fuji Electric Co., Ltd. Iron core retaining structure of electromagnetic contactor
GB2315162A (en) * 1996-07-08 1998-01-21 Behavior Tech Computer Corp Keyboard switch
US5779030A (en) * 1996-11-27 1998-07-14 Samsung Electro-Mechanics Co., Ltd. Key board
US5986227A (en) * 1997-01-08 1999-11-16 Hon Hai Precision Ind. Co., Ltd. Keyswitch key apparatus
JPH11111101A (en) * 1997-10-08 1999-04-23 Smk Corp Guide mechanism for key top
EP0966010A2 (en) * 1998-06-18 1999-12-22 Fujitsu Takamisawa Component Limited Key switch and keyboard
EP1049119A2 (en) * 1999-04-26 2000-11-02 Alps Electric Co., Ltd. Keyswitch used in a keyboard

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 017, no. 460 (E - 1419) 23 August 1993 (1993-08-23) *
PATENT ABSTRACTS OF JAPAN vol. 018, no. 369 (E - 1576) 12 July 1994 (1994-07-12) *
PATENT ABSTRACTS OF JAPAN vol. 1999, no. 09 30 July 1999 (1999-07-30) *

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