US4358701A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Discharge lamps having internal starting aid capacitively coupled to one of the electrodes
Assignee: Osram Sylvania Inc
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Filing: 1980-12-08
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Granted: 1982-11-09
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Expires: 2000-12-08
Abstract
Abstract A fluorescent lamp assembly is comprised of a lamp and a ballast therefor. The lamp includes an internal, solid wire starting aid connected to third lead-in wire sealed in an end of the lamp. A resistive ballast serially couples the lamp electrodes to a lamp starting means such as a glow-bottle. The starting aid is capacitively coupled to a lead-in wire of its adjacent electrode.
Inventors
- 👤 William J. Roche
- 👤 John W. Anderson, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 15:32
CPC Classifications
H; H05; H05B; H05B41/00; H05B41/02; H05B41/04; H01; H01J; H01J61/00; H01J61/02; H01J61/54; H01J61/545; Y; Y10; Y10S; Y10S315/00; Y10S315/01
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
127 words
A fluorescent lamp assembly comprising: a fluorescent lamp having a tubular glass body with electrodes at each end thereof, each electrode being supported by a pair of lead-in wires sealed in glass sealing means; a layer of phosphor on the interior surface of said body and an arc generating and sustaining medium therein; one of said ends being provided with a third lead-in wire adjacent to one of said electrodes; a wire starting aid connected to said third lead-in wire and extending the length of said body to a position adjacent said other electrode; a resistive ballast for said lamp serially coupling said electrodes and a lamp starting means; and means capacitively coupling said third lead-in wire to one of the lead-in wires of its adjacent electrode.
Claim 2
Dependent Claim
127 words
A fluorescent lamp assembly comprising: a fluorescent lamp having a tubular glass body with electrodes at each end thereof, each electrode being supported by a pair of lead-in wires sealed in glass sealing means; a layer of phosphor on the interior surface of said body and an arc generating and sustaining medium therein; one of said ends being provided with a third lead-in wire adjacent to one of said electrodes; a wire starting aid connected to said third lead-in wire and extending the length of said body to a position adjacent said other electrode; a resistive ballast for said lamp serially coupling said electrodes and a lamp starting means; and means capacitively coupling said third lead-in wire to one of the lead-in wires of its adjacent electrode.
Claim 3
Dependent Claim
13 words
The lamp assembly of claim 1 wherein said starting means is a glow-bottle.
Claim 4
Dependent Claim
33 words
The lamp of claim 1 wherein said means capacitively coupling said third lead-in wire to said lead-in wire of said adjacent electrode is a capacitor having a value of at least 0.1 μf.
References Cited (Backward Citations)
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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) | 1985-11-08 | 1986-05-10 | 1986-11-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-11-08 | 1990-05-10 | 1990-11-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-11-08 | 1994-05-10 | 1994-11-09 | $7700.00 | Window Closed / Lapsed |