US3555340A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Button short-arc gas lamp
Assignee: United States Department of the Army
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Filing: 1969-01-07
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Granted: 1971-01-12
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Expires: 1989-01-07
Abstract
Abstract An arc lamp having short length. The lamp includes an anode extending into one end of the lamp envelope and a cathode extending into the other end of the envelope. Both electrodes include a shoulder portion outside of the envelope in abutting relation with the ends of the envelope. The ends of the envelope are metallized on the outer surface thereof and a sealing ring includes an annular portion enclosing the ends of the envelope for sealing relation with the metallized bands on the envelope. The ring further includes a radially inwardly extending seat portion disposed intermediate the ends of the envelope and the shoulder portion of the electrodes.
Inventors
- 👤 Teddy J Peacher
- 👤 Dorwin L Kilbourn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 10:18
CPC Classifications
H; H01; H01J; H01J61/00; H01J61/02; H01J61/36; H01J61/98
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
148 words
An arc lamp structure comprising: a. a tubular envelope disposed for containing a gas under pressure therein; b. a pair of electrodes each being secured to opposite ends of said envelope, each of said electrodes having a conical-shaped tip portion, a cylindrical intermediate portion carried in the interior of said envelope, and an annular end sealing member carried externally of said envelope, said end sealing member having a seat portion disposed adjacent to and in spaced relation with the ends of said envelope; c. a pair of metallized bands disposed circumferentially about the outer surface of said envelope adjacent the ends thereof; d. a sealing ring having an annular portion carried about the periphery of said envelope adjacent the ends thereof in sealed relation with said metallized band, and an inwardly extending seat portion disposed intermediate the ends of said envelope and said seat portion of said electrodes.
Claim 2
Dependent Claim
148 words
An arc lamp structure comprising: a. a tubular envelope disposed for containing a gas under pressure therein; b. a pair of electrodes each being secured to opposite ends of said envelope, each of said electrodes having a conical-shaped tip portion, a cylindrical intermediate portion carried in the interior of said envelope, and an annular end sealing member carried externally of said envelope, said end sealing member having a seat portion disposed adjacent to and in spaced relation with the ends of said envelope; c. a pair of metallized bands disposed circumferentially about the outer surface of said envelope adjacent the ends thereof; d. a sealing ring having an annular portion carried about the periphery of said envelope adjacent the ends thereof in sealed relation with said metallized band, and an inwardly extending seat portion disposed intermediate the ends of said envelope and said seat portion of said electrodes.
Claim 3
Dependent Claim
23 words
The device as set forth in claim 1 wherein said seal ring is of an alloy consisting essentially of nickel, iron and cobalt.
Claim 4
Dependent Claim
19 words
The device as set forth in claim 2 wherein said electrodes are comprised of copper having a tungsten tip.
Claim 5
Dependent Claim
43 words
The device as set forth in claim 3 wherein one of said electrodes is provided with a passage therethrough in communication with the interior of said envelope, for the pressurization of said envelope, and, means for plugging said passage responsive to the pressurization.
Claim 6
Dependent Claim
16 words
The device as set forth in claim 4 wherein said tubular envelope is of ceramic material.
Claim 7
Dependent Claim
15 words
The device as set forth in claim 4 wherein said tubular envelope is of sapphire.
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) | 1974-01-11 | 1974-07-13 | 1975-01-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-11 | 1978-07-13 | 1979-01-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-11 | 1982-07-13 | 1983-01-12 | $7700.00 | Window Closed / Lapsed |