GB1395647A - Pushbutton keyboard systems - Google Patents

Pushbutton keyboard systems

Info

Publication number
GB1395647A
GB1395647A GB2337572A GB2337572A GB1395647A GB 1395647 A GB1395647 A GB 1395647A GB 2337572 A GB2337572 A GB 2337572A GB 2337572 A GB2337572 A GB 2337572A GB 1395647 A GB1395647 A GB 1395647A
Authority
GB
United Kingdom
Prior art keywords
board
elements
staples
conductive
conductive paths
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
GB2337572A
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 GB1395647A publication Critical patent/GB1395647A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • H01H13/7013—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 in which the movable contacts of each switch site or of a row of switch sites are formed in a single plate
    • 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
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/02—Input arrangements using manually operated switches, e.g. using keyboards or dials
    • G06F3/0202—Constructional details or processes of manufacture of the input device
    • 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
    • H01H13/02—Details
    • H01H13/12—Movable parts; Contacts mounted thereon
    • H01H13/14—Operating parts, e.g. push-button
    • 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

1395647 Retractive switches TEXAS INSTRUMENTS Inc 18 May 1972 [1 June 1971] 23375/72 Heading H1N A keyboard switching panel, suitable for miniature electronic calculators, for example, comprises an insulating plate 12 having conductive paths on its lower surface; a plurality of spaced apart sets of conductive support members 20 on its opposite surface in electrical connection with first preselected portions of said conductive paths; conductive contact members 22 associated respectively with each of said sets of support members 20 and in electrical connection with second preselected portions of said conductive paths; a plurality of selectively actuable conductive elements 24 each supported by and in continuous electrical contact with respective sets of support members 20, and in selective disengagement with the associated contact member 22, said elements 24 being resiliently deflectable into engagement with said contact members 22 to establish electrical connection between said first and second portions of said conductive paths. As shown, the members 20 aud 22 are staples of gold-plated nickel wire, or gold and nickel plating on stainless steel, or of copper beryllium. The elements 24 comprise snap-acting discs of gold-plated stainless steel, for example, and are located in apertures 46 in an insulating board 44, the apertures being shaped at 46a to accommodate the tops of staples 20, and at 46b to locate the elements 24. A thin flexible insulating sheet or film 48 overlies the assembly, and a top cover or casing 28 carries push-buttons 26 having protrusions 50 for actuation of respective elements 24. The board 44 is preferably sealed to board 12 around its edges, the film 48 is bonded to the top surface of board 44, and the edges 56 of casing 28 are sealed to edges 12a, 12b of board 12. A semiconductor device such as an integrated circuit 30 may be mounted on board 12. In an alternative embodiment (Figs. 4 to 6, not shown) collared rivets (66) replace the staples 20 and somewhat shorter headed rivets (70) replace staples 22. The snap-acting discs are supported on the collars of, for example, four rivets (66) and the locating board 44 is dispensed with.
GB2337572A 1971-06-01 1972-05-18 Pushbutton keyboard systems Expired GB1395647A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US14850371A 1971-06-01 1971-06-01

Publications (1)

Publication Number Publication Date
GB1395647A true GB1395647A (en) 1975-05-29

Family

ID=22526059

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2337572A Expired GB1395647A (en) 1971-06-01 1972-05-18 Pushbutton keyboard systems

Country Status (13)

Country Link
US (1) US3725907A (en)
JP (1) JPS5616446B1 (en)
KR (1) KR780000592B1 (en)
AR (1) AR202520A1 (en)
BR (1) BR7203542D0 (en)
CA (1) CA966181A (en)
DE (2) DE7220498U (en)
ES (1) ES403288A1 (en)
FR (1) FR2141133A5 (en)
GB (1) GB1395647A (en)
IT (1) IT958121B (en)
NL (1) NL167527C (en)
SU (1) SU704477A3 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2122421A (en) * 1982-06-07 1984-01-11 Methode Electronics Inc Switch assemblies

Families Citing this family (35)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
US3858202A (en) * 1971-06-01 1974-12-31 Texas Instruments Inc Pushbutton keyboard system
US4314112A (en) * 1971-08-23 1982-02-02 Hewlett-Packard Company Keyboard having switches with tactile feedback
CH560426A5 (en) * 1971-09-06 1975-03-27 Olivetti & Co Spa
US3846791A (en) * 1972-10-02 1974-11-05 R Foster Solid state keyboard
USRE30923E (en) * 1973-01-02 1982-05-04 Bowmar Instrument Corporation Calculator keyboard switch with disc spring contact and printed circuit board
USRE29440E (en) * 1973-01-02 1977-10-11 Bowmar Instrument Corporation Calculator keyboard switch with disc spring contact and printed circuit board
GB1460021A (en) * 1973-01-24 1976-12-31 Gen Electric Co Ltd Electric switches
US3886341A (en) * 1973-05-02 1975-05-27 Bowman Ali Inc Switch operating device for use with an over center diaphragm switch contact assembly with contact ramp camming surface
GB1435171A (en) * 1973-05-11 1976-05-12 Sumlock Anita Electronics Ltd Keyboards
US3858020A (en) * 1973-07-30 1974-12-31 Staco Switch Inc Pushbutton with spring contactor
US3867594A (en) * 1973-11-29 1975-02-18 Texas Instruments Inc Pressure sensitive switch with diaphragm and dish contact means
AR204336A1 (en) * 1973-12-17 1975-12-22 Texas Instruments Inc KEYBOARD PIECE
US3995123A (en) * 1974-01-09 1976-11-30 Wilson Charles H Telephone calculator
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
US4018999A (en) * 1974-09-12 1977-04-19 Mohawk Data Sciences Corporation Keyboard switch assembly having adhesive position retainer element
US4033030A (en) * 1974-09-12 1977-07-05 Mohawk Data Sciences Corporation Method of manufacturing keyswitch assemblies
FR2285764A1 (en) * 1974-09-17 1976-04-16 Picart Lebas Telephones Pushbutton dialling key board with signal generators - has resilient foil contacts on electronic assembly aligned with pushbutton assembly
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
US3955498A (en) * 1975-03-27 1976-05-11 Scott Thaddeus Leroy Electromagnetically actuated printer
US4032738A (en) * 1975-05-15 1977-06-28 Neomed Incorporated Electro-surgical instrument
US4071718A (en) * 1976-10-22 1978-01-31 Bowmar Instrument Corporation Flat keyboard assembly having cover type membrane with protrusions to align switch components
US4768284A (en) * 1979-02-06 1988-09-06 Texas Instruments Incorporated A method for making low profile microswitches, particularly useful for keyboards
US4349708A (en) * 1979-08-22 1982-09-14 Atari, Inc. Joystick control
US4271333A (en) * 1979-09-25 1981-06-02 Northern Telecom, Inc. Pushbutton dial assembly
US4343973A (en) * 1980-08-13 1982-08-10 Cherry Electrical Products Corp. Low cost electrical switch
US4734679A (en) * 1986-06-12 1988-03-29 Northern Telecom Limited Pushbutton keyboard assembly
GB9004532D0 (en) * 1990-02-28 1990-04-25 Lucas Ind Plc Switch assembly
US5184971A (en) * 1991-03-08 1993-02-09 Williams Susan A Toy telephone recorder with picture actuated recording and playback
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
US20120048703A1 (en) * 2010-09-01 2012-03-01 Michael Kotson Printed circuit board and method for avoiding electromagnetic interference

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3600528A (en) * 1969-09-25 1971-08-17 Lematex Corp Multiple switch construction
US3592979A (en) * 1969-11-05 1971-07-13 Ncr Co Elastomeric keyboard with improved printed circuit contact means
BE758202A (en) * 1969-11-24 1971-04-01 Sanders Associates Inc MONOLITHIC KEYBOARD AND METHOD FOR MANUFACTURING SUCH A KEYBOARD
US3617660A (en) * 1970-01-23 1971-11-02 Ibm Keyboard actuating mechanism for diaphragm electric switch contact array

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2122421A (en) * 1982-06-07 1984-01-11 Methode Electronics Inc Switch assemblies

Also Published As

Publication number Publication date
NL167527B (en) 1981-07-16
BR7203542D0 (en) 1973-06-14
DE2226607A1 (en) 1972-12-14
CA966181A (en) 1975-04-15
DE2226607B2 (en) 1977-07-28
NL7207456A (en) 1972-12-05
JPS5616446B1 (en) 1981-04-16
IT958121B (en) 1973-10-20
KR780000592B1 (en) 1978-11-23
DE7220498U (en) 1983-06-23
ES403288A1 (en) 1976-01-16
AU6580374A (en) 1975-08-21
AR202520A1 (en) 1975-06-24
NL167527C (en) 1981-12-16
FR2141133A5 (en) 1973-01-19
US3725907A (en) 1973-04-03
SU704477A3 (en) 1979-12-15

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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