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SE8901833D0 - Foerfarande och anordning foer att byta gloedtraad, samt lampa med flera gloedtraadar - Google Patents

Foerfarande och anordning foer att byta gloedtraad, samt lampa med flera gloedtraadar

Info

Publication number
SE8901833D0
SE8901833D0 SE8901833A SE8901833A SE8901833D0 SE 8901833 D0 SE8901833 D0 SE 8901833D0 SE 8901833 A SE8901833 A SE 8901833A SE 8901833 A SE8901833 A SE 8901833A SE 8901833 D0 SE8901833 D0 SE 8901833D0
Authority
SE
Sweden
Prior art keywords
pulses
pct
replacement
circuit
resetting
Prior art date
Application number
SE8901833A
Other languages
English (en)
Other versions
SE8901833L (sv
Inventor
Jorma Hiljanen
Original Assignee
Jorma Hiljanen
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 Jorma Hiljanen filed Critical Jorma Hiljanen
Publication of SE8901833D0 publication Critical patent/SE8901833D0/sv
Publication of SE8901833L publication Critical patent/SE8901833L/sv

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01K—ELECTRIC INCANDESCENT LAMPS
    • H01K9/00—Lamps having two or more incandescent bodies separately heated
    • H01K9/02—Lamps having two or more incandescent bodies separately heated to provide substitution in the event of failure of one of the bodies
    • H01K9/06—Lamps having two or more incandescent bodies separately heated to provide substitution in the event of failure of one of the bodies with built-in device, e.g. switch, for automatically completing circuit of reserve body

Landscapes

  • Circuit Arrangement For Electric Light Sources In General (AREA)
  • Ropes Or Cables (AREA)
SE8901833A 1987-09-23 1989-05-23 Foerfarande och anordning foer att byta gloedtraad, samt lampa med flera gloedtraadar SE8901833L (sv)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI874165A FI874165A (fi) 1987-09-23 1987-09-23 Foerfarande och anordning foer att byta gloedtraod, samt lampa med flere gloedtraodar.
PCT/FI1988/000153 WO1989003119A1 (en) 1987-09-23 1988-09-23 A method and a device for replacing incandescent filaments, and a lamp with several filaments

Publications (2)

Publication Number Publication Date
SE8901833D0 true SE8901833D0 (sv) 1989-05-23
SE8901833L SE8901833L (sv) 1989-05-23

Family

ID=8525116

Family Applications (1)

Application Number Title Priority Date Filing Date
SE8901833A SE8901833L (sv) 1987-09-23 1989-05-23 Foerfarande och anordning foer att byta gloedtraad, samt lampa med flera gloedtraadar

Country Status (7)

Country Link
US (1) US5003224A (sv)
DK (1) DK249889D0 (sv)
FI (1) FI874165A (sv)
IS (1) IS3393A7 (sv)
NL (1) NL8820709A (sv)
SE (1) SE8901833L (sv)
WO (1) WO1989003119A1 (sv)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5296783A (en) * 1991-06-04 1994-03-22 Rockwell International Corporation Dual filament lamp and drive apparatus for dimmable avionics displays
GB0321663D0 (en) * 2003-09-16 2003-10-15 Mcenteggart Liam Safety light bulb
ES1058803Y (es) * 2004-07-08 2005-06-01 Sendin Maximino Fernandez Bombilla o foco luminoso multifilamento de cambio automatico.

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1298179A (en) * 1918-10-05 1919-03-25 Jacob H Coggins Incandescent electric lamp.
US1802838A (en) * 1925-11-11 1931-04-28 Sakakura Yukitoshi Incandescent lamp
US2874331A (en) * 1958-04-14 1959-02-17 Sylvania Electric Prod Transistorized current transfer apparatus
US3471745A (en) * 1967-07-19 1969-10-07 Rca Corp Automatic lamp changing apparatus
US3457453A (en) * 1967-11-30 1969-07-22 Wallace & Tiernan Inc System for controllably energizing and monitoring the normalcy of successively selectable electrical load devices
US4080548A (en) * 1976-01-19 1978-03-21 Precision Controls, Inc. Lighting system having dimming capabilities
US4034259A (en) * 1976-04-14 1977-07-05 Audio Visual Innovators Corporation Spare lamp control circuit for a light projection system
US4382209A (en) * 1980-10-06 1983-05-03 General Electric Company Thermal switch and dual filament long life lamp
US4527095A (en) * 1982-07-28 1985-07-02 Herring Robert W Lamp circuit apparatus
US4767968A (en) * 1984-10-18 1988-08-30 American Sterilizer Company System for controlling the operation of electrically powered apparatus
US4862038A (en) * 1987-06-08 1989-08-29 Morten John F Automatic relamping system
US4841196A (en) * 1987-12-09 1989-06-20 Gte Products Corporation Two-filament lamp and operating circuit and method for designing same

Also Published As

Publication number Publication date
FI874165A0 (fi) 1987-09-23
IS3393A7 (is) 1989-03-24
NL8820709A (nl) 1989-08-01
US5003224A (en) 1991-03-26
SE8901833L (sv) 1989-05-23
WO1989003119A1 (en) 1989-04-06
DK249889A (da) 1989-05-23
DK249889D0 (da) 1989-05-23
FI874165A (fi) 1989-03-24

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Legal Events

Date Code Title Description
NAV Patent application has lapsed

Ref document number: 8901833-7

Effective date: 19910401