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GB1412808A - Key switches - Google Patents

Key switches

Info

Publication number
GB1412808A
GB1412808A GB3658373A GB3658373A GB1412808A GB 1412808 A GB1412808 A GB 1412808A GB 3658373 A GB3658373 A GB 3658373A GB 3658373 A GB3658373 A GB 3658373A GB 1412808 A GB1412808 A GB 1412808A
Authority
GB
United Kingdom
Prior art keywords
contact
shaft
aug
push
fixed
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
GB3658373A
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.)
Siemens Corp
Original Assignee
Siemens Corp
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 DE2241346A external-priority patent/DE2241346C3/en
Application filed by Siemens Corp filed Critical Siemens Corp
Publication of GB1412808A publication Critical patent/GB1412808A/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
    • H01H13/50—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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J5/00—Devices or arrangements for controlling character selection
    • B41J5/08—Character or syllable selected by means of keys or keyboards of the typewriter type
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L13/00—Details of the apparatus or circuits covered by groups H04L15/00 or H04L17/00
    • H04L13/16—Details of the apparatus or circuits covered by groups H04L15/00 or H04L17/00 of transmitters, e.g. code-bars, code-discs

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Push-Button Switches (AREA)
  • Input From Keyboards Or The Like (AREA)

Abstract

1412808 Push button switch SIEMENS AG 1 Aug 1973 [29 Aug 1972 24 Aug 1972] 36583/73 Heading H1N In a push-button switch the key shaft 2 Fig. 1 has wedge-shaped surfaces 4, 5 whereby on initial movement of the shaft 2, surface 4 moves the movable spring contact 6 away from the fixed contact 7 against the force of the contact spring 6 and subsequent movement releases the contact spring to move towards the fixed contact while exerting a force on the actuation surface 5. The contact spring may be U-shaped wire 6, Fig. 2, fixed at its ends and engageable with a sloping surface 8 on the fixed contact 7 to reduce the contact bounce. An electromagnetically operated latch 11 is mounted below the shaft 2 and prevents movement of the shaft 2 when the electromagnet 14 is energized as by a prior operation of another push-button on the same keyboard.
GB3658373A 1972-08-23 1973-08-01 Key switches Expired GB1412808A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE7231118 1972-08-23
DE2241346A DE2241346C3 (en) 1972-08-23 1972-08-23 Key switches, in particular for keyboards in typewriters and similar machines

Publications (1)

Publication Number Publication Date
GB1412808A true GB1412808A (en) 1975-11-05

Family

ID=25763736

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3658373A Expired GB1412808A (en) 1972-08-23 1973-08-01 Key switches

Country Status (9)

Country Link
JP (1) JPS5423291B2 (en)
AR (1) AR200879A1 (en)
CH (1) CH561955A5 (en)
CS (1) CS186253B2 (en)
FR (1) FR2197218B1 (en)
GB (1) GB1412808A (en)
IT (1) IT992970B (en)
NL (1) NL174890C (en)
SE (1) SE382774B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006050703A1 (en) * 2004-11-11 2006-05-18 Zf Friedrichshafen Ag Actuating device comprising keys

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51412A (en) * 1974-06-19 1976-01-06 Hitachi Ltd
DE3312217A1 (en) * 1983-04-05 1984-10-11 Dr. Eugen Sasse GmbH Bauelemente für die Elektronik, 8540 Schwabach KEYBOARD KEY, ESPECIALLY FOR TELEPHONE KEYBOARDS
EP0261702A1 (en) * 1986-08-27 1988-03-30 Koninklijke Philips Electronics N.V. Switch provided with wire-shaped contact members

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3274355A (en) * 1965-02-08 1966-09-20 Scantlin Electronics Inc Cam operated snap switch having wire contacts
US3715545A (en) * 1971-06-18 1973-02-06 Cherry Electrical Prod Momentary push button switch with improved non-conductive cam for normally retaining movable leaf spring contacts in a non-operative position

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006050703A1 (en) * 2004-11-11 2006-05-18 Zf Friedrichshafen Ag Actuating device comprising keys
US7541553B2 (en) 2004-11-11 2009-06-02 Zf Friedrichshafen Ag Actuating device with push buttons

Also Published As

Publication number Publication date
SE382774B (en) 1976-02-16
NL174890B (en) 1984-03-16
CH561955A5 (en) 1975-05-15
IT992970B (en) 1975-09-30
AU5912673A (en) 1975-02-13
CS186253B2 (en) 1978-11-30
FR2197218A1 (en) 1974-03-22
JPS4957918A (en) 1974-06-05
NL174890C (en) 1984-08-16
AR200879A1 (en) 1974-12-27
NL7311315A (en) 1974-02-26
JPS5423291B2 (en) 1979-08-13
FR2197218B1 (en) 1977-09-09

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee