US3597650A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Arc radiation sources
Assignee: Union Carbide Corp
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Filing: 1969-09-23
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Granted: 1971-08-03
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Expires: 1989-09-23
Abstract
Abstract A high pressure arc radiation torch provided with spaced tubular electrodes having axially aligned gas exit passages; an envelope of transparent material surrounding said electrodes in concentric relation and providing a pressurized gas chamber; one of said tubular electrodes extending into said chamber to form a relatively thin annular region substantially cylindrical in cross section between the outer surface of said tubular electrode and the inner surface of said chamber, and means for feeding gas into said annular region under conditions to provide strong swirl within the chamber resulting in a highly constricted arc column of substantial length.
Inventors
- 👤 John E Anderson
- 👤 Richard C Eschenbach
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 20:37
CPC Classifications
H; H01; H01J; H01J61/00; H01J61/02; H01J61/04; H01J61/06; H01J61/09; H01J61/24; H01J61/28
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
136 words
A high pressure arc radiation torch comprising: two spaced tubular electrodes having axially aligned central gas exit passages; an envelope of transparent material surrounding said electrodes in concentric relation and providing a pressurized gas chamber; at least one of said tubular electrodes extending into said chamber to form a relatively thin annular region substantially cylindrical in cross section between the outer surface of said extended tubular electrode and the inner surface of said envelope; inlet ports tangentially disposed in the outer surface of the extended portion of said tubular electrode for discharging arc gas into said annular region and representing the sole means for introducing gas into the chamber; gas supply inlet means; gas passage means connecting said gas supply inlet means to said inlet ports, and means for energizing an arc between said tubular electrodes.
Claim 2
Dependent Claim
136 words
A high pressure arc radiation torch comprising: two spaced tubular electrodes having axially aligned central gas exit passages; an envelope of transparent material surrounding said electrodes in concentric relation and providing a pressurized gas chamber; at least one of said tubular electrodes extending into said chamber to form a relatively thin annular region substantially cylindrical in cross section between the outer surface of said extended tubular electrode and the inner surface of said envelope; inlet ports tangentially disposed in the outer surface of the extended portion of said tubular electrode for discharging arc gas into said annular region and representing the sole means for introducing gas into the chamber; gas supply inlet means; gas passage means connecting said gas supply inlet means to said inlet ports, and means for energizing an arc between said tubular electrodes.
Claim 3
Dependent Claim
35 words
A high pressure arc radiation torch as defined in claim 1 wherein said transparent envelope is enclosed within another transparent envelope in concentric relation therewith forming an annular passage through which a coolant is passed.
Claim 4
Dependent Claim
22 words
A high pressure arc radiation torch as defined in claim 1 wherein at least said extended tubular electrode has a tungsten insert.
Claim 5
Dependent Claim
27 words
A high pressure arc radiation torch as defined in claim 3 wherein said gas passage means is concentric with the longitudinal axis of said extended tubular electrode.
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) | 1974-08-02 | 1975-02-01 | 1975-08-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-02 | 1979-02-01 | 1979-08-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-02 | 1983-02-01 | 1983-08-03 | $7700.00 | Window Closed / Lapsed |