GB1455521A - Pushbutton keyboard system - Google Patents

Pushbutton keyboard system

Info

Publication number
GB1455521A
GB1455521A GB765874A GB765874A GB1455521A GB 1455521 A GB1455521 A GB 1455521A GB 765874 A GB765874 A GB 765874A GB 765874 A GB765874 A GB 765874A GB 1455521 A GB1455521 A GB 1455521A
Authority
GB
United Kingdom
Prior art keywords
contact
feb
conductive
contacts
keyboard system
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
GB765874A
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 GB1455521A publication Critical patent/GB1455521A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • G06C7/08—Keyboards with one set of keys for all denominations, e.g. ten-key board
    • 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
    • H01H13/50—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a single operating member
    • H01H13/64—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a single operating member wherein the switch has more than two electrically distinguishable positions, e.g. multi-position push-button 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
    • 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
    • H01H13/702—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 with contacts carried by or formed from layers in a multilayer structure, e.g. membrane switches
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2203/00—Form of contacts
    • H01H2203/006—Staples

Abstract

1455521 Retractive switches TEXAS INSTRUMENTS Inc 20 Feb 1974 [21 Feb 1973] 7658/74 Addition to 1395647 Heading H1N A keyboard switching panel substantially as in Specification 1,395,647 has at least one set of conductive contact members with more than a single pole contact. A central fixed contact staple may be cut away to provide two contacts which are connected to different contact paths on the reverse of the insulating baseboard; alternatively at least two rivets may form the fixed contacts. The connection to the actuatable conductive elements may comprise annular shoulders formed by respective apertures in a sheet of conductive material overlying the insulating baseboard.
GB765874A 1971-06-01 1974-02-20 Pushbutton keyboard system Expired GB1455521A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US14850371A 1971-06-01 1971-06-01
US00334345A US3808384A (en) 1971-06-01 1973-02-21 Pushbutton keyboard system

Publications (1)

Publication Number Publication Date
GB1455521A true GB1455521A (en) 1976-11-10

Family

ID=26845926

Family Applications (1)

Application Number Title Priority Date Filing Date
GB765874A Expired GB1455521A (en) 1971-06-01 1974-02-20 Pushbutton keyboard system

Country Status (4)

Country Link
US (1) US3808384A (en)
FR (1) FR2236662A2 (en)
GB (1) GB1455521A (en)
NL (1) NL7402377A (en)

Families Citing this family (25)

* 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
US3920943A (en) * 1974-03-22 1975-11-18 Magsat Corp Electrical switch
US4074088A (en) * 1974-05-21 1978-02-14 Texas Instruments Incorporated Keyboard apparatus and method of making
US3908109A (en) * 1974-06-14 1975-09-23 Mohawk Data Sciences Corp Dome shaped switch member
US4033030A (en) * 1974-09-12 1977-07-05 Mohawk Data Sciences Corporation Method of manufacturing keyswitch assemblies
US4018999A (en) * 1974-09-12 1977-04-19 Mohawk Data Sciences Corporation Keyboard switch assembly having adhesive position retainer element
US3940758A (en) * 1974-09-20 1976-02-24 Margolin George D Expandable keyboard for electronic pocket calculators and the like
US4005296A (en) * 1974-10-29 1977-01-25 Medtronic, Inc. Disc switch
US3959611A (en) * 1975-01-10 1976-05-25 Texas Instruments Incorporated Pushbutton keyboard system having plural level wire-like contact
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
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
US4022993A (en) * 1975-06-09 1977-05-10 Litton Systems, Inc. Switch assembly having electrically illuminated character display devices between transparent actuators and switch arrays
FR2343323A1 (en) * 1976-03-05 1977-09-30 Schoeller & Co Elektrotech DECLICK SWITCH ESPECIALLY FOR TELEVISION AND RADIO RECEIVERS
JPS5824347Y2 (en) * 1976-09-10 1983-05-25 アルプス電気株式会社 push button switch
US4263485A (en) * 1979-10-15 1981-04-21 Beckman Instruments, Inc. Keyboard of membrane switches with tactile feedback
KR900006479Y1 (en) * 1983-04-20 1990-07-26 부라더 고오교 가부시기가이샤 Key board
FR2556512B1 (en) * 1983-12-13 1986-12-26 Itt Composants Instr ELECTRIC SWITCHING DEVICE
WO1986002196A1 (en) * 1984-09-29 1986-04-10 Matsushita Electric Industrial Co., Ltd. Push-type switch
JP4442963B2 (en) * 1999-10-26 2010-03-31 パナソニック株式会社 Button switch
US20080156657A1 (en) * 2000-02-17 2008-07-03 Butterfield Paul D Conductive polishing article for electrochemical mechanical polishing
US7303662B2 (en) * 2000-02-17 2007-12-04 Applied Materials, Inc. Contacts for electrochemical processing
US20040020789A1 (en) * 2000-02-17 2004-02-05 Applied Materials, Inc. Conductive polishing article for electrochemical mechanical polishing
US7374644B2 (en) * 2000-02-17 2008-05-20 Applied Materials, Inc. Conductive polishing article for electrochemical mechanical polishing
JP2005174788A (en) * 2003-12-12 2005-06-30 Matsushita Electric Ind Co Ltd Push-on switch
US7067757B1 (en) * 2004-12-17 2006-06-27 Siemens Communications Inc. Multi-tier keypad assembly

Family Cites Families (13)

* 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
US3311718A (en) * 1965-04-14 1967-03-28 Cts Corp Rotary electric switch with improved internal actuating and contact structure including tolerance compensator means
US3350673A (en) * 1966-06-10 1967-10-31 Allen Bradley Co Adjustable electronic component
US3600528A (en) * 1969-09-25 1971-08-17 Lematex Corp Multiple switch construction
US3603756A (en) * 1970-01-29 1971-09-07 Sperry Rand Corp Snap action switch
US3584162A (en) * 1970-02-16 1971-06-08 Ibm Electrical keyboard switch mechanism with improved resilient diaphragm contact actuator
US3684842A (en) * 1970-07-01 1972-08-15 Texas Instruments Inc Pushbutton keyboard switch assembly with improved over center diaphragm contact
US3696411A (en) * 1970-11-12 1972-10-03 Texas Instruments Inc Keyboard encoder
US3643041A (en) * 1970-12-30 1972-02-15 Unidynamics Phoenix Pushbutton diaphragm switch with improved dimple actuator and/or capacitance-type switch contact structure
US3699294A (en) * 1971-05-18 1972-10-17 Flex Key Corp Keyboard, digital coding, switch for digital logic, and low power detector switches
US3725907A (en) * 1971-06-01 1973-04-03 Texas Instruments Inc Pushbutton keyboard system
US3751612A (en) * 1971-08-30 1973-08-07 Colorado Instr Inc Snap action capacitive type switch
US3749859A (en) * 1972-04-19 1973-07-31 Colorado Instr Inc Keyboard switch assembly with improved hermetically sealed diaphragm contact structure

Also Published As

Publication number Publication date
FR2236662A2 (en) 1975-02-07
US3808384A (en) 1974-04-30
NL7402377A (en) 1974-08-23

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]