US3706898A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High pressure electric discharge lamp
Assignee: GTE Sylvania Inc
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Filing: 1971-01-22
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Granted: 1972-12-19
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Expires: 1991-01-22
Abstract
Abstract The arc tube of an arc discharge lamp has two main electrodes and a starter electrode adjacent to one of them, the starter electrode being electrically connected to the other main electrode through a ceramic capacitor. The capacitance and voltage rating of the capacitor are such as to provide sufficient capacitive reactance for limiting the current to the starter electrode and to function as a direct current blocking capacitor during normal operation of the lamp.
Inventors
- 👤 Carl L Peterson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 16:42
CPC Classifications
H; H01; H01J; H01J61/00; H01J61/02; H01J61/54; H01J61/545
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
56 words
An alternating current electric discharge device comprising: an arc tube containing an ionizable discharge-sustaining filling; first and second main electrodes disposed within said arc tube; a starter electrode disposed within said arc tube adjacent to and dielectrically isolated from said first main electrode; and a capaCitor connected between said starter electrode and said second main electrode.
Claim 2
Dependent Claim
56 words
An alternating current electric discharge device comprising: an arc tube containing an ionizable discharge-sustaining filling; first and second main electrodes disposed within said arc tube; a starter electrode disposed within said arc tube adjacent to and dielectrically isolated from said first main electrode; and a capaCitor connected between said starter electrode and said second main electrode.
Claim 3
Dependent Claim
49 words
The electric discharge device of claim 1 wherein said capacitor has a capacitance value and direct current voltage rating selected to provide sufficient capacitive reactance for limiting the current to said starter electrode and to function as a direct current blocking capacitor during normal operation of said discharge device.
Claim 4
Dependent Claim
19 words
The electric discharge device of claim 1 further including a light-transmitting jacket enveloping said arc tube but spaced therefrom.
Claim 5
Dependent Claim
19 words
The electric discharge device of claim 3 wherein said capacitor is disposed between said arc tube and said jacket.
Claim 6
Dependent Claim
14 words
The electric discharge device of claim 4 wherein said capacitor has a ceramic dielectric.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-12-19 | 1976-06-19 | 1976-12-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-12-19 | 1980-06-19 | 1980-12-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-12-19 | 1984-06-19 | 1984-12-19 | $7700.00 | Window Closed / Lapsed |