GB1352076A - Pushbutton keyboard system - Google Patents

Pushbutton keyboard system

Info

Publication number
GB1352076A
GB1352076A GB2965171A GB2965171A GB1352076A GB 1352076 A GB1352076 A GB 1352076A GB 2965171 A GB2965171 A GB 2965171A GB 2965171 A GB2965171 A GB 2965171A GB 1352076 A GB1352076 A GB 1352076A
Authority
GB
United Kingdom
Prior art keywords
discs
buttons
apertures
snap
insulating
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
GB2965171A
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.)
Texas Instruments Inc
Original Assignee
Texas Instruments 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 Texas Instruments Inc filed Critical Texas Instruments Inc
Publication of GB1352076A publication Critical patent/GB1352076A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G04—HOROLOGY
    • G04C—ELECTROMECHANICAL CLOCKS OR WATCHES
    • G04C3/00—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means
    • G04C3/001—Electromechanical switches for setting or display
    • G04C3/005—Multiple switches
    • 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
    • H01H13/7006—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 comprising a separate movable contact element for each switch site, all other elements being integrated in layers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/02—Constructional features of telephone sets
    • H04M1/23—Construction or mounting of dials or of equivalent devices; Means for facilitating the use thereof
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2203/00—Form of contacts
    • H01H2203/026—Form of contacts on different planes
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2205/00—Movable contacts
    • H01H2205/016—Separate bridge contact
    • H01H2205/024—Means to facilitate positioning
    • H01H2205/03—Apertured plate
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2215/00—Tactile feedback
    • H01H2215/034—Separate snap action
    • H01H2215/036—Metallic disc
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2227/00—Dimensions; Characteristics
    • H01H2227/026—Separate dome contact
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2233/00—Key modules
    • H01H2233/002—Key modules joined to form button rows
    • H01H2233/004—One molded part

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Push-Button Switches (AREA)

Abstract

1352076 Mechanical switches TEXAS INSTRUMENTS Inc 24 June 1971 [1 July 1970] 29651/71 Heading H1N In an electric switch keyboard, push-buttons 26a, Fig. 2, depress snap-over conductive discs 22 into engagement with a printed circuit board 10, the discs resting at their peripheries on a common conductive sheet 18. Projections 52 on the discs pass through apertures 21 in an insulating separator plate 20. The discs 22 are located by apertures 36 in an insulating board 34. The buttons 26a may be formed (as shown) from a single unitary body of resilient material or may comprise separate buttons (64), Fig. 7 (not shown), slidable in an apertured plate (68). The snap disc contacts 22 eliminate contact bounce and may be made of stainless steel plated with gold.
GB2965171A 1970-07-01 1971-06-24 Pushbutton keyboard system Expired GB1352076A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US5146470A 1970-07-01 1970-07-01

Publications (1)

Publication Number Publication Date
GB1352076A true GB1352076A (en) 1974-05-15

Family

ID=21971457

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2965171A Expired GB1352076A (en) 1970-07-01 1971-06-24 Pushbutton keyboard system

Country Status (6)

Country Link
US (1) US3684842A (en)
JP (1) JPS598266Y2 (en)
AR (1) AR203369Q (en)
DE (1) DE2132329A1 (en)
FR (1) FR2103009A5 (en)
GB (1) GB1352076A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USRE30923E (en) 1973-01-02 1982-05-04 Bowmar Instrument Corporation Calculator keyboard switch with disc spring contact and printed circuit board
GB2346739A (en) * 1999-02-12 2000-08-16 Nokia Mobile Phones Ltd Support structure for a keypad

Families Citing this family (50)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3858202A (en) * 1971-06-01 1974-12-31 Texas Instruments Inc Pushbutton keyboard system
US3839785A (en) * 1971-06-01 1974-10-08 Texas Instruments Inc Pushbutton keyboard system
US3808384A (en) * 1971-06-01 1974-04-30 Texas Instruments Inc Pushbutton keyboard system
US4314112A (en) * 1971-08-23 1982-02-02 Hewlett-Packard Company Keyboard having switches with tactile feedback
US3743798A (en) * 1971-09-13 1973-07-03 North American Rockwell Elongated spring coil conductors applying tension force to pushbutton actuators in keyboard matrix switch assembly
US3783205A (en) * 1971-10-27 1974-01-01 Texas Instruments Inc Keyboard switch matrix assembly with improved guide means for reducing transfer of bounding motion to movable conductor
US3749859A (en) * 1972-04-19 1973-07-31 Colorado Instr Inc Keyboard switch assembly with improved hermetically sealed diaphragm contact structure
US3767875A (en) * 1972-06-19 1973-10-23 Texas Instruments Inc Diaphragm type pushbutton setting switch with fixed contact semiconductor substrate support
DE2341521C3 (en) * 1972-08-18 1978-05-18 Matsushita Electric Industrial Co., Ltd., Kadoma, Osaka (Japan) Push button switch
BE795425A (en) * 1972-11-20 1973-05-29 Texas Instruments Inc ADVANCED PUSH-BUTTON KEYPAD SYSTEM
IT975915B (en) * 1972-12-01 1974-08-10 Olivetti & Co Spa KEYBOARD IN ELASTIC MATERIAL FOR OFFICE MACHINES
US4039068A (en) * 1972-12-14 1977-08-02 Ing. C. Olivetti & C., S.P.A. Keyboard of elastic material for office machines
USRE29440E (en) * 1973-01-02 1977-10-11 Bowmar Instrument Corporation Calculator keyboard switch with disc spring contact and printed circuit board
JPS49109160U (en) * 1973-01-11 1974-09-18
DE2507581C2 (en) * 1974-02-22 1981-09-17 Canon K.K., Tokyo Input device for an electronic device
US4005299A (en) * 1974-04-29 1977-01-25 Texas Instruments Incorporated Electrical contact member having low electrical resistance
US4074088A (en) * 1974-05-21 1978-02-14 Texas Instruments Incorporated Keyboard apparatus and method of making
DD118195A5 (en) * 1974-05-22 1976-02-12
US3908109A (en) * 1974-06-14 1975-09-23 Mohawk Data Sciences Corp Dome shaped switch member
US3916135A (en) * 1974-07-03 1975-10-28 Hewlett Packard Co Keyboard type switch with rocker type key actuator
US3947390A (en) * 1974-09-23 1976-03-30 Xerox Corporation Arch shaped snap-type switch contact
US3952174A (en) * 1974-11-29 1976-04-20 Texas Instruments Incorporated Pushbutton keyboard system
US4005293A (en) * 1974-11-29 1977-01-25 Texas Instruments Incorporated Pushbutton keyboard switch assembly having individual concave-convex contacts integrally attached to conductor strips
US3995128A (en) * 1975-01-10 1976-11-30 Texas Instruments Incorporated Pushbutton keyboard system having preformed recessed support with contacts mounted on face and in recesses
US3996427A (en) * 1975-01-10 1976-12-07 Texas Instruments Incorporated Pushbutton keyboard system and method of making same
US3973091A (en) * 1975-02-03 1976-08-03 Texas Instruments Incorporated Pushbutton keyboard assembly having pole and inner contacts simultaneously engaged by a bridging contact
US3996428A (en) * 1975-03-17 1976-12-07 Litronix, Inc. Pushbutton keyboard assembly with over center diaphragm contact
US3971902A (en) * 1975-03-21 1976-07-27 Amp Incorporated Keyboard switch assembly having one piece plural pushbutton actuator and resilient mounting structure for plural cantilever beam contacts
US3995126A (en) * 1975-04-03 1976-11-30 Magic Dot, Inc. Membrane keyboard apparatus
US4021630A (en) * 1975-04-25 1977-05-03 Neomed Incorporated Hermetically sealed resilient contact switch having surgical applications
DE2528502C3 (en) 1975-06-26 1978-09-07 Braun Ag, 6000 Frankfurt Electric switch with a rocker switch that can be tilted around an axis
US4046981A (en) * 1975-12-24 1977-09-06 Texas Instruments Incorporated Keyboard switch with printed wiring board structure and its method of manufacture
JPS5650647Y2 (en) * 1976-02-20 1981-11-27
US4065650A (en) * 1976-09-21 1977-12-27 Lou Kwong Li Electronic calculator with switches in solid V- and U-shaped groups
US4086451A (en) * 1976-12-06 1978-04-25 Texas Instruments Incorporated Keyboard apparatus
DE2743360C2 (en) * 1977-09-27 1985-07-18 Robert Bosch Gmbh, 7000 Stuttgart Push button switch for establishing or interrupting an electrical connection
US4237351A (en) * 1978-10-02 1980-12-02 Texas Instruments Incorporated Keyboard apparatus
DE3011674C2 (en) * 1980-03-26 1984-07-26 Preh, Elektrofeinmechanische Werke Jakob Preh Nachf. Gmbh & Co, 8740 Bad Neustadt keyboard
DE3012717A1 (en) * 1980-04-01 1981-10-08 Wilhelm Ruf KG, 8000 München KEYPAD
US4681987A (en) * 1983-01-11 1987-07-21 Canon Kabushiki Kaisha Electronic equipment having a key input function
KR900003546B1 (en) * 1984-09-29 1990-05-21 마쯔시다덴기산교 가부시기가이샤 Push switch
US4720610A (en) * 1986-12-19 1988-01-19 Amp Incorporated Membrane key switch with anti-inversion feature
US6222525B1 (en) * 1992-03-05 2001-04-24 Brad A. Armstrong Image controllers with sheet connected sensors
US5438177A (en) * 1992-05-06 1995-08-01 Key Tronic Corporation Two-layer membrane switch
US8674932B2 (en) * 1996-07-05 2014-03-18 Anascape, Ltd. Image controller
EP1528582A1 (en) * 2003-10-30 2005-05-04 Siemens Aktiengesellschaft Keypad
US7832628B2 (en) * 2005-10-21 2010-11-16 Verifone, Inc. Protective cover for terminal keypad security switches
DE202009000260U1 (en) 2009-01-07 2009-05-28 Cerbe, Michael, Dipl.-Ing. input device
US8072764B2 (en) 2009-03-09 2011-12-06 Apple Inc. Multi-part substrate assemblies for low profile portable electronic devices
US8339798B2 (en) 2010-07-08 2012-12-25 Apple Inc. Printed circuit boards with embedded components

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2262777A (en) * 1940-09-21 1941-11-18 John M Roper Quick acting positive contact switch
US3290439A (en) * 1963-04-29 1966-12-06 Willcox Data encoding keyboard
US3308253A (en) * 1965-03-25 1967-03-07 Ibm Diaphragm switch having a diaphragm supported on an incompressible layer and an elastomer overlaying the diaphragm
US3472974A (en) * 1967-09-25 1969-10-14 Automatic Elect Lab Pushbutton switch activated by a slide with a plurality of toggle joints and cams
CS41879A (en) * 1967-11-02
US3541515A (en) * 1968-04-01 1970-11-17 Rca Corp Single wire crosspoint switching circuit with external signaling
US3551616A (en) * 1969-01-15 1970-12-29 Ibm Multiple switch encoding device
US3600528A (en) * 1969-09-25 1971-08-17 Lematex Corp Multiple switch construction

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USRE30923E (en) 1973-01-02 1982-05-04 Bowmar Instrument Corporation Calculator keyboard switch with disc spring contact and printed circuit board
GB2346739A (en) * 1999-02-12 2000-08-16 Nokia Mobile Phones Ltd Support structure for a keypad
GB2346739B (en) * 1999-02-12 2002-12-18 Nokia Mobile Phones Ltd Keypad structure
US6614905B1 (en) 1999-02-12 2003-09-02 Nokia Mobile Phones Limited Support structure for a keypad

Also Published As

Publication number Publication date
AR203369Q (en) 1975-09-08
DE2132329B2 (en) 1973-12-06
JPS5612230U (en) 1981-02-02
FR2103009A5 (en) 1972-04-07
DE2132329A1 (en) 1972-01-05
JPS598266Y2 (en) 1984-03-14
US3684842A (en) 1972-08-15

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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