US4268780A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Integrated fluorescent-incandescent lamp assembly
Assignee: Osram Sylvania Inc
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Filing: 1980-03-28
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Granted: 1981-05-19
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Expires: 2000-03-28
Abstract
Abstract A lamp assembly (10) comprises a base plate (12) having both an incandescent bulb (18) and a fluorescent bulb (16) affixed thereto. The incandescent bulb (18) acts as ballast and light source. A glow switch (26) and capacitor (27) act as starter and are contained within the base plate (12) or socket means (14). A starting aid (24) is impedance coupled into the series filament network.
Inventors
- 👤 William J. Roche
- 👤 Tadius T. Sadoski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 03:52
CPC Classifications
H; H05; H05B; H05B35/00; Y; Y10; Y10S; Y10S315/00; Y10S315/05
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
110 words
A lamp assembly comprising: a base plate having thereon socket means for connection to a source of power; a "U" shaped fluorescent bulb affixed to said base plate; an incandescent bulb affixed to said base plate between the legs of said fluorescent bulb; a glow switch and associated RFI suppressor contained within said socket means, said glow switch being serially connected in a filament loop comprising: the first and second filaments of said fluorescent bulb and the filament of said incandescent bulb; and a starting aid positioned externally of said bulbs and attached to said fluorescent bulb, said starting aid being impedance coupled to one side of said filament loop.
Claim 2
Dependent Claim
110 words
A lamp assembly comprising: a base plate having thereon socket means for connection to a source of power; a "U" shaped fluorescent bulb affixed to said base plate; an incandescent bulb affixed to said base plate between the legs of said fluorescent bulb; a glow switch and associated RFI suppressor contained within said socket means, said glow switch being serially connected in a filament loop comprising: the first and second filaments of said fluorescent bulb and the filament of said incandescent bulb; and a starting aid positioned externally of said bulbs and attached to said fluorescent bulb, said starting aid being impedance coupled to one side of said filament loop.
Claim 3
Dependent Claim
42 words
The lamp assembly of claim 1 wherein said starting aid comprises a tripartite strip having, in order, an adhesive layer which is electrically insulating, a metal layer, and a non-adhesive, electrically insulating layer, said adhesive layer being affixed to said fluorescent bulb.
Claim 4
Dependent Claim
23 words
The lamp assembly of claim 2 wherein said starting aid is affixed to the surface of said fluorescent bulb facing said incandescent bulb.
References Cited (Backward Citations)
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US2344122A
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US2372857A
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US2491881A
Cited
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-05-18 | 1984-11-17 | 1985-05-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-05-18 | 1988-11-17 | 1989-05-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-05-18 | 1992-11-17 | 1993-05-19 | $7700.00 | Window Closed / Lapsed |