US3715613A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sealed high-pressure arc lamp and socket therefor
Assignee: Excelitas Technologies Illumination Inc
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Filing: 1971-05-13
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Granted: 1973-02-06
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Expires: 1991-05-13
Abstract
Abstract A sealed beam arc lamp is disclosed wherein the lamp exterior is at a single electrical potential. The non-window portion of the lamp exterior can be of high strength metal alloy. Electrical insulation is provided by a thermally conductive ceramic cylinder internal to the lamp and disposed so as to avoid tensile stresses, and by a sealed labyrinthine passage defined by a removable socket.
Inventors
- 👤 M Parkman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 14:31
CPC Classifications
H; H01; H01J; H01J61/00; H01J61/84; H01J61/86; H01J61/98
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
142 words
An arc lamp comprising: a sealed envelope including a base and an Optical window opposite said base, said envelope containing an ionizable gas at a pressure higher than atmospheric pressure, the exterior of said lamp comprising a metallic portion, a first electrode supported within said envelope opposite said base by conductive support means providing electrical contact between said first electrode and said metallic portion whereby the exterior of said lamp can be maintained at the same electrical potential as said first electrode, a second electrode supported in said base, means for connecting the second electrode to a source of power, a ceramic cylinder disposed between said second electrode and the exterior of said lamp so as to form at least part of the electrical insulation of said second electrode from the exterior of said lamp, and a reflector supported within said envelope.
Claim 2
Dependent Claim
142 words
An arc lamp comprising: a sealed envelope including a base and an Optical window opposite said base, said envelope containing an ionizable gas at a pressure higher than atmospheric pressure, the exterior of said lamp comprising a metallic portion, a first electrode supported within said envelope opposite said base by conductive support means providing electrical contact between said first electrode and said metallic portion whereby the exterior of said lamp can be maintained at the same electrical potential as said first electrode, a second electrode supported in said base, means for connecting the second electrode to a source of power, a ceramic cylinder disposed between said second electrode and the exterior of said lamp so as to form at least part of the electrical insulation of said second electrode from the exterior of said lamp, and a reflector supported within said envelope.
Claim 3
Dependent Claim
142 words
An arc lamp comprising: a sealed envelope including a base and an Optical window opposite said base, said envelope containing an ionizable gas at a pressure higher than atmospheric pressure, the exterior of said lamp comprising a metallic portion, a first electrode supported within said envelope opposite said base by conductive support means providing electrical contact between said first electrode and said metallic portion whereby the exterior of said lamp can be maintained at the same electrical potential as said first electrode, a second electrode supported in said base, means for connecting the second electrode to a source of power, a ceramic cylinder disposed between said second electrode and the exterior of said lamp so as to form at least part of the electrical insulation of said second electrode from the exterior of said lamp, and a reflector supported within said envelope.
Claim 4
Dependent Claim
142 words
An arc lamp comprising: a sealed envelope including a base and an Optical window opposite said base, said envelope containing an ionizable gas at a pressure higher than atmospheric pressure, the exterior of said lamp comprising a metallic portion, a first electrode supported within said envelope opposite said base by conductive support means providing electrical contact between said first electrode and said metallic portion whereby the exterior of said lamp can be maintained at the same electrical potential as said first electrode, a second electrode supported in said base, means for connecting the second electrode to a source of power, a ceramic cylinder disposed between said second electrode and the exterior of said lamp so as to form at least part of the electrical insulation of said second electrode from the exterior of said lamp, and a reflector supported within said envelope.
Claim 5
Dependent Claim
30 words
An arc lamp as claimed in claim 1 wherein said ceramic cylinder comprises a heat dissipating material to transfer at least part of the heat from said base second electrode.
Claim 6
Dependent Claim
24 words
An arc lamp as claimed in claim 1 wherein the stress caused by said high-pressure ionizable gas upon said ceramic cylinder is primarily compressive.
Claim 7
Dependent Claim
36 words
An arc lamp as claimed in claim 1 wherein the base of said lamp is insertable into an electric power providing socket which comprises said means for connecting the second electrode to a source of power.
Claim 8
Dependent Claim
65 words
An arc lamp as claimed in claim 4 wherein the ceramic cylinder of said lamp comprises one or more extenSions whereby when the base of said lamp is inserted into a socket which also comprises a ceramic cylinder having one or more extensions, the extensions of said socket cylinder being interspersed with respect to the extensions of said lamp cylinder, a labyrinthine passage is created.
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) | 1976-02-06 | 1976-08-07 | 1977-02-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-02-06 | 1980-08-07 | 1981-02-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-02-06 | 1984-08-07 | 1985-02-06 | $7700.00 | Window Closed / Lapsed |