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US 6,084,359 AGranted
Coil assembly for an electrodeless fluorescent lamp
AssigneeGeneral Electric Company
InventorsFrederick Hetzel, Robert S. McFeely, Vito Joseph Arsena, Joseph C. Oberle, David O. Wharmby, Steven John Everest, Mahomed Hanif Girach
Life of this patent
Estimating the term…
Abstract
A coil assembly for an electrodeless fluorescent lamp comprises a hollow ferrite core 30, and a coil 31. The core is retained on a base 32 by a coil former 34 surrounding the core. The core 30 is retained in the former 34 by a circlip 33 or projections. The coil 31 is wound on the former. Pins 36 to which the coil is soldered connect the coil to an energizing circuit.
Claims17
An electrodeless fluorescent lamp comprising:
- a discharge vessel containing a fill which when energized sustains a discharge and at least a phosphor coating on the inner surface of the vessel, the vessel having a re-entrant portion;
- and,
- a coil assembly comprising:
- a base, a core of magnetically permeable material supported on the base, a coil around the core, and
- a retaining clip arrangement for securing the coil relative to the base and retaining the core on the base;
- the coil and core of the coil assembly being housed in the re-entrant portion of the vessel.
3 more elements
An electrodeless fluorescent lamp comprising:
- a discharge vessel containing a fill which when energized sustains a discharge and at least a phosphor coating on the inner surface of the vessel, the vessel having a re-entrant portion;
- and,
- a coil assembly comprising:
- a base, a core of magnetically permeable material supported on the base, a coil around the cores, and
- at least a pair of fingers between which the core is located that retain the core on the base, the fingers having respective lateral projections engaging the end of the core remote from the base;
- the coil and core of the coil assembly being housed in the re-entrant portion of the vessel.
3 more elements
An electrodeless fluorescent lamp comprising:
- a discharge vessel containing a fill which when energized sustains a discharge and at least a phosphor coating on the inner surface of the vessel, the vessel having a re-entrant portion;
- and,
- a coil assembly comprising:
- a base, a core of magnetically permeable material supported on the base, a coil around the core, and
- a coil former for retaining the core on the base, the core being located in the coil former, the coil being wound on the coil former, and the core is retained in the former by a circlip within the former;
- the coil and core of the coil assembly being housed in the re-entrant portion of the vessel.
3 more elements
Dependencies are inferred from the claim text.