[go: up one dir, main page]

SE8000792L - telephone apparatus - Google Patents

telephone apparatus

Info

Publication number
SE8000792L
SE8000792L SE8000792A SE8000792A SE8000792L SE 8000792 L SE8000792 L SE 8000792L SE 8000792 A SE8000792 A SE 8000792A SE 8000792 A SE8000792 A SE 8000792A SE 8000792 L SE8000792 L SE 8000792L
Authority
SE
Sweden
Prior art keywords
steel plate
pcb
circuit
telephone apparatus
pushbutton
Prior art date
Application number
SE8000792A
Other languages
Unknown language ( )
Swedish (sv)
Other versions
SE440567B (en
Inventor
G V Lenaerts
R Perks
P J Dudley
Original Assignee
Northern Telecom Ltd
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 Northern Telecom Ltd filed Critical Northern Telecom Ltd
Publication of SE8000792L publication Critical patent/SE8000792L/en
Publication of SE440567B publication Critical patent/SE440567B/en

Links

Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K1/00—Printed circuits
    • H05K1/02—Details
    • H05K1/14—Structural association of two or more printed circuits
    • H05K1/144—Stacked arrangements of planar printed circuit boards
    • 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
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K1/00—Printed circuits
    • H05K1/02—Details
    • H05K1/03—Use of materials for the substrate
    • H05K1/05—Insulated conductive substrates, e.g. insulated metal substrate
    • H05K1/053—Insulated conductive substrates, e.g. insulated metal substrate the metal substrate being covered by an inorganic insulating layer

Landscapes

  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Push-Button Switches (AREA)
  • Telephone Set Structure (AREA)
  • Telephonic Communication Services (AREA)
  • Input From Keyboards Or The Like (AREA)

Abstract

A pushbutton switch assembly has at least one of the conventional PCB's replaced by a porcelain coated steel plate 30. The contact circuit 31 for the pushbutton switches 13, 19 is formed on the top surface of the steel plate 30. It is also possible to replace both PCB's of a conventional switch by forming a second circuit on the under surface of the steel plate, with the electrical devices mounted thereon. Use of the steel plate enables the normal metal mounting plate to be omitted. <IMAGE>
SE8000792A 1979-02-02 1980-01-31 Pushbutton stellare SE440567B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA320,732A CA1100165A (en) 1979-02-02 1979-02-02 Pushbutton switch assembly for telecommunications and other input apparatus

Publications (2)

Publication Number Publication Date
SE8000792L true SE8000792L (en) 1980-08-03
SE440567B SE440567B (en) 1985-08-05

Family

ID=4113441

Family Applications (1)

Application Number Title Priority Date Filing Date
SE8000792A SE440567B (en) 1979-02-02 1980-01-31 Pushbutton stellare

Country Status (9)

Country Link
JP (1) JPS55124914A (en)
BE (1) BE881507A (en)
CA (1) CA1100165A (en)
DE (1) DE3003715A1 (en)
FR (1) FR2448218A1 (en)
GB (1) GB2043352B (en)
IT (1) IT1193911B (en)
NO (1) NO153197C (en)
SE (1) SE440567B (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3130159C2 (en) * 1981-07-30 1987-02-05 Preh, Elektrofeinmechanische Werke Jakob Preh Nachf. Gmbh & Co, 8740 Bad Neustadt Process for manufacturing printed circuit boards
JPH049706Y2 (en) * 1984-09-13 1992-03-11
GB2250380B (en) * 1990-11-27 1995-01-04 Ist Lab Ltd Switch apparatus
GB2308499B (en) * 1995-12-22 2000-03-15 Nokia Mobile Phones Ltd A contact membrane for a keypad assembly

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB990023A (en) * 1961-03-13 1965-04-22 Ass Elect Ind Improvements relating to printed electrical circults
US3843851A (en) * 1971-09-17 1974-10-22 Canon Kk A rigid compact electronic computer
FR2196515B1 (en) * 1972-08-18 1977-09-16 Matsushita Electric Industrial Co Ltd
AR204336A1 (en) * 1973-12-17 1975-12-22 Texas Instruments Inc KEYBOARD PIECE
CA1019374A (en) * 1975-04-16 1977-10-18 Cornelis W. Reedyk Multi-contact push-button switch
CA1034175A (en) * 1975-04-16 1978-07-04 Pak-Jong Chu Multi-contact push-button switch
US3969600A (en) * 1975-06-11 1976-07-13 Burroughs Corporation Tactile feedback keyboard switch assembly and actuator

Also Published As

Publication number Publication date
IT8019650A0 (en) 1980-02-01
BE881507A (en) 1980-08-01
NO800228L (en) 1980-08-04
NO153197B (en) 1985-10-21
CA1100165A (en) 1981-04-28
GB2043352A (en) 1980-10-01
NO153197C (en) 1986-01-29
FR2448218A1 (en) 1980-08-29
JPS55124914A (en) 1980-09-26
FR2448218B1 (en) 1984-02-24
DE3003715A1 (en) 1980-08-14
IT1193911B (en) 1988-08-31
GB2043352B (en) 1983-04-13
SE440567B (en) 1985-08-05

Similar Documents

Publication Publication Date Title
DE58907894D1 (en) Disconnect contact arrangement for the main current paths of a circuit breaker.
RO80667A2 (en) LINE TELEPHONE CIRCUIT WITH CAPACITIVE COVER SWITCH
BE851123A (en) CONTACT COATING FOR ELECTRICAL CONTACTS FOR LOW CURRENTS
GB2029127B (en) Mounting electrical contacts
BE855839A (en) ELECTRICAL CONTACT FOR FLAT CABLE
GB1446460A (en) Electric changeover switch device
SE8000792L (en) telephone apparatus
FR2315780A1 (en) ELASTIC CONTACT ELECTRICAL CONNECTION BOX, ESPECIALLY FOR PRINTED CIRCUIT BOARDS
CH644990GA3 (en)
DE3175072D1 (en) Contact piece for an electric switch apparatus, in particular for a protrective switch
JPS53879A (en) Switch for electrical circuit printed substrate
JPS5551630A (en) Illuminator
BE879790A (en) TELESCOPIC DISCONNECTOR WITH CONTACTS FOR HIGH INTENSITY CURRENTS
NO780894L (en) ELECTRICAL CIRCUIT PLATE.
SE8501516D0 (en) MEMBRANE SWITCH
BE883707A (en) DOUBLE ANTI-ARC CONTACT FOR CIRCUIT BREAKER
DK182977A (en) CONTACT MECHANISM FOR AN ELECTRICAL SWITCH
ZA784103B (en) Gas-blast electrical circuit breakers
JPS5235281A (en) Peparation of flexible base for printed circuit
GB1538194A (en) High-current electrical switches employing liquid metal
BE878792A (en) ILLUMINATED SWITCH FOR ELECTRICAL INSTALLATION
SE8103146L (en) LOAD-BREAKING ELECTRIC ELECTRICAL
GB2074382B (en) Contact assembly for an electrical switch
AU521177B2 (en) Circuit breaker contact structure
JPS5696436A (en) Switching contact mechanism for circuit breaker

Legal Events

Date Code Title Description
NUG Patent has lapsed

Ref document number: 8000792-5

Effective date: 19880125

Format of ref document f/p: F