IE40116B1 - Key actuated electric switches and keyboards for use in communication devices - Google Patents

Key actuated electric switches and keyboards for use in communication devices

Info

Publication number
IE40116B1
IE40116B1 IE233474A IE233474A IE40116B1 IE 40116 B1 IE40116 B1 IE 40116B1 IE 233474 A IE233474 A IE 233474A IE 233474 A IE233474 A IE 233474A IE 40116 B1 IE40116 B1 IE 40116B1
Authority
IE
Ireland
Prior art keywords
keyboards
communication devices
electric switches
key actuated
actuated electric
Prior art date
Application number
IE233474A
Other versions
IE40116L (en
Original Assignee
Deutsche Telephonwerk Kabel
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
Priority claimed from DE19732357887 external-priority patent/DE2357887C3/en
Application filed by Deutsche Telephonwerk Kabel filed Critical Deutsche Telephonwerk Kabel
Publication of IE40116L publication Critical patent/IE40116L/en
Publication of IE40116B1 publication Critical patent/IE40116B1/en

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
    • H01H1/00—Contacts
    • H01H1/12—Contacts characterised by the manner in which co-operating contacts engage
    • H01H1/14—Contacts characterised by the manner in which co-operating contacts engage by abutting
    • H01H1/20—Bridging contacts
IE233474A 1973-11-17 1974-11-13 Key actuated electric switches and keyboards for use in communication devices IE40116B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19732357887 DE2357887C3 (en) 1973-11-17 Keys and keypad for telecommunications, in particular telephone systems

Publications (2)

Publication Number Publication Date
IE40116L IE40116L (en) 1975-05-17
IE40116B1 true IE40116B1 (en) 1979-03-14

Family

ID=5898601

Family Applications (1)

Application Number Title Priority Date Filing Date
IE233474A IE40116B1 (en) 1973-11-17 1974-11-13 Key actuated electric switches and keyboards for use in communication devices

Country Status (7)

Country Link
BE (1) BE818661A (en)
FR (1) FR2251901A1 (en)
GB (1) GB1462447A (en)
IE (1) IE40116B1 (en)
IT (1) IT1025577B (en)
LU (1) LU70751A1 (en)
NL (1) NL7411257A (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3135655A1 (en) * 1981-09-09 1983-03-24 Rafi Gmbh & Co Elektrotechnische Spezialfabrik, 7981 Berg "PUSH BUTTON FOR ELECTRICAL DEVICES"
GB2120853A (en) * 1982-05-24 1983-12-07 Illinois Tool Works Liquid contaminant resistant electric switches
DE19954098C1 (en) * 1999-11-10 2001-02-01 Siemens Ag Pushbutton with changeover contact function

Also Published As

Publication number Publication date
FR2251901A1 (en) 1975-06-13
NL7411257A (en) 1975-05-21
IT1025577B (en) 1978-08-30
DE2357887A1 (en) 1975-05-28
GB1462447A (en) 1977-01-26
IE40116L (en) 1975-05-17
DE2357887B2 (en) 1976-12-09
LU70751A1 (en) 1975-01-02
BE818661A (en) 1974-12-02

Similar Documents

Publication Publication Date Title
CA1026237A (en) Key board switch
CA940179A (en) Pushbutton electrical switch unit
AU7027374A (en) Key switch apparatus
CA980389A (en) Key operated electric circuit breaker
AU7060874A (en) Keyboard switch
HK18579A (en) Electric switch
CA936206A (en) Key operated electrical switch
CA984168A (en) Key cylinder and electrical switch
AU7027474A (en) Key switch apparatus
IE40116B1 (en) Key actuated electric switches and keyboards for use in communication devices
SG28981G (en) Improvements in electric switches
ZA765042B (en) Improvements in or relating to gas-blast switches
ZA73960B (en) Improvements in pressure operated switches
JPS52110478A (en) Key switch
AU6889374A (en) Electric switch
JPS5241882A (en) Key switch
JPS5239187A (en) Key switch
JPS5281574A (en) Key switch
CA917572A (en) Coding keyboard and electrical switch therefor
JPS52154081A (en) Key switch
JPS52154082A (en) Key switch
JPS5324579A (en) Key switch
CA812312A (en) Electric key switches
JPS51144972A (en) Capacitance type key switch and keyboard matrix
JPS51119978A (en) Nonnarcing key switch