SE8901833L - 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 gloedtraadarInfo
- Publication number
- SE8901833L SE8901833L SE8901833A SE8901833A SE8901833L SE 8901833 L SE8901833 L SE 8901833L SE 8901833 A SE8901833 A SE 8901833A SE 8901833 A SE8901833 A SE 8901833A SE 8901833 L SE8901833 L SE 8901833L
- Authority
- SE
- Sweden
- Prior art keywords
- pulses
- pct
- replacement
- circuit
- resetting
- Prior art date
Links
- 230000003213 activating effect Effects 0.000 abstract 1
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)
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 SE8901833D0 (sv) | 1989-05-23 |
SE8901833L true 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 (fi) |
DK (1) | DK249889D0 (fi) |
FI (1) | FI874165A (fi) |
IS (1) | IS3393A7 (fi) |
NL (1) | NL8820709A (fi) |
SE (1) | SE8901833L (fi) |
WO (1) | WO1989003119A1 (fi) |
Families Citing this family (3)
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)
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 |
-
1987
- 1987-09-23 FI FI874165A patent/FI874165A/fi not_active IP Right Cessation
-
1988
- 1988-09-20 IS IS3393A patent/IS3393A7/is unknown
- 1988-09-23 US US07/368,315 patent/US5003224A/en not_active Expired - Fee Related
- 1988-09-23 NL NL8820709A patent/NL8820709A/nl not_active Application Discontinuation
- 1988-09-23 WO PCT/FI1988/000153 patent/WO1989003119A1/en unknown
-
1989
- 1989-05-23 DK DK249889A patent/DK249889D0/da not_active Application Discontinuation
- 1989-05-23 SE SE8901833A patent/SE8901833L/xx not_active Application Discontinuation
Also Published As
Publication number | Publication date |
---|---|
SE8901833D0 (sv) | 1989-05-23 |
DK249889A (da) | 1989-05-23 |
FI874165A (fi) | 1989-03-24 |
FI874165A0 (fi) | 1987-09-23 |
DK249889D0 (da) | 1989-05-23 |
US5003224A (en) | 1991-03-26 |
IS3393A7 (is) | 1989-03-24 |
NL8820709A (nl) | 1989-08-01 |
WO1989003119A1 (en) | 1989-04-06 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
NAV | Patent application has lapsed |
Ref document number: 8901833-7 Effective date: 19910401 |