IT1016303B - Perfezionamento nei dispositivi di commutazione elettrica in partico lare per tastiere per calcolatri ci e simili - Google Patents

Perfezionamento nei dispositivi di commutazione elettrica in partico lare per tastiere per calcolatri ci e simili

Info

Publication number
IT1016303B
IT1016303B IT51918/74A IT5191874A IT1016303B IT 1016303 B IT1016303 B IT 1016303B IT 51918/74 A IT51918/74 A IT 51918/74A IT 5191874 A IT5191874 A IT 5191874A IT 1016303 B IT1016303 B IT 1016303B
Authority
IT
Italy
Prior art keywords
calculators
keyboards
improvement
similar
switching devices
Prior art date
Application number
IT51918/74A
Other languages
English (en)
Italian (it)
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
Application granted granted Critical
Publication of IT1016303B publication Critical patent/IT1016303B/it

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
    • H01H13/02—Details
    • H01H13/12—Movable parts; Contacts mounted thereon
    • 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
IT51918/74A 1973-07-05 1974-07-04 Perfezionamento nei dispositivi di commutazione elettrica in partico lare per tastiere per calcolatri ci e simili IT1016303B (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US00376779A US3842229A (en) 1973-07-05 1973-07-05 Keyboard pushbutton switch

Publications (1)

Publication Number Publication Date
IT1016303B true IT1016303B (it) 1977-05-30

Family

ID=23486452

Family Applications (1)

Application Number Title Priority Date Filing Date
IT51918/74A IT1016303B (it) 1973-07-05 1974-07-04 Perfezionamento nei dispositivi di commutazione elettrica in partico lare per tastiere per calcolatri ci e simili

Country Status (14)

Country Link
US (1) US3842229A (ro)
JP (1) JPS5039418A (ro)
AU (1) AU7027474A (ro)
BR (1) BR7405523D0 (ro)
CA (1) CA1010096A (ro)
CS (1) CS178173B2 (ro)
DD (1) DD113973A5 (ro)
DK (1) DK360174A (ro)
ES (1) ES427962A1 (ro)
FR (1) FR2236263A1 (ro)
IT (1) IT1016303B (ro)
NL (1) NL7408664A (ro)
RO (1) RO70422A (ro)
SU (1) SU620228A3 (ro)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3962556A (en) * 1975-01-10 1976-06-08 Texas Instruments Incorporated Keyboard with versatile switch support structures
US4118611A (en) * 1977-08-30 1978-10-03 International Business Machines Corporation Buckling spring torsional snap actuator
DE2854096C2 (de) * 1978-12-14 1982-04-08 Siemens AG, 1000 Berlin und 8000 München Tastenschalter, insbesondere für Tastaturen in Schreibmaschinen und ähnlichen Einrichtungen
JPS58147615U (ja) * 1982-03-29 1983-10-04 日鐵溶接工業株式会社 横置ル−プ状線材の石灰コ−テイング装置
DE8411745U1 (de) * 1984-04-13 1986-02-06 Siemens AG, 1000 Berlin und 8000 München Drucktaste
JPS61151214U (ro) * 1985-03-09 1986-09-18
US6965789B2 (en) * 2000-12-29 2005-11-15 Vertu Limited Portable communication device
GB2371022B (en) * 2000-12-29 2005-01-12 Nokia Mobile Phones Ltd A portable communication device
USD873271S1 (en) * 2019-08-07 2020-01-21 Shenzhen Qianhai Patuoxun Network And Technology Co., Ltd. Keyboard

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2910551A (en) * 1957-04-22 1959-10-27 Generald Motors Corp Switch assembly
US3223794A (en) * 1963-11-13 1965-12-14 Indak Mfg Corp Multiple position electrical switch with contact rails and dummy contact pressure stabilizers
US3259721A (en) * 1964-03-19 1966-07-05 Therm O Disc Inc Thermostatic switch with rocking bridging contact
US3244847A (en) * 1964-05-22 1966-04-05 Navigation Computer Corp Manually operated keyboard switch in a stationary mount with guided shaftway
GB1140521A (en) * 1965-01-08 1969-01-22 Plessey Uk Ltd Improvements relating to electric ignition devices
US3707609A (en) * 1971-10-27 1972-12-26 Texas Instruments Inc Diaphragm pushbutton switch array for keyboards
US3731032A (en) * 1971-10-28 1973-05-01 Us Controls Corp Electrical switch with contact wiping
US3786205A (en) * 1972-05-11 1974-01-15 Becton Dickinson Co Keyboard switch assembly with movable, multi-contact means and associated swinger portions

Also Published As

Publication number Publication date
DE2432316A1 (de) 1975-01-23
CS178173B2 (ro) 1977-08-31
RO70422A (ro) 1982-05-10
BR7405523D0 (pt) 1975-05-13
ES427962A1 (es) 1976-08-16
US3842229A (en) 1974-10-15
DD113973A5 (ro) 1975-07-05
DK360174A (ro) 1975-02-24
FR2236263A1 (ro) 1975-01-31
AU7027474A (en) 1976-01-08
CA1010096A (en) 1977-05-10
SU620228A3 (ru) 1978-08-15
DE2432316B2 (de) 1977-06-30
JPS5039418A (ro) 1975-04-11
NL7408664A (nl) 1975-01-07

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