US3572875A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vacuum tube
Assignee: Varian Medical Systems Inc
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Filing: 1960-07-28
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Granted: 1971-03-30
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Expires: 1980-07-28
Abstract
Abstract 2. A process for making a pulsed-neutron tube containing an active metal having sorbed therein a gas chosen from the group consisting of deuterium and tritium, said process comprising the steps in sequence of heating said tube to an elevated temperature while maintaining a vacuum therein, introducing said gas into said tube, cooling said active metal, below said elevated temperature while forming an electrical discharge in said gas, and sealing said tube permanently closed.
Inventors
- 👤 Lowell A Noble
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 20:28
CPC Classifications
H; H05; H05H; H05H6/00
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
68 words
A process for sorbing gas into an active metal comprising the steps in sequence of heating said active metal to an elevated temperature in a vacuum chamber, connecting said chamber to a source of vacuum during said heating, exposing said active metal to an atmosphere of said gas, colling said active metal below said elevated temperature, and forming an electrical discharge in said gas during said cooling step.
Claim 2
Dependent Claim
68 words
A process for sorbing gas into an active metal comprising the steps in sequence of heating said active metal to an elevated temperature in a vacuum chamber, connecting said chamber to a source of vacuum during said heating, exposing said active metal to an atmosphere of said gas, colling said active metal below said elevated temperature, and forming an electrical discharge in said gas during said cooling step.
Claim 3
Dependent Claim
68 words
A process for sorbing gas into an active metal comprising the steps in sequence of heating said active metal to an elevated temperature in a vacuum chamber, connecting said chamber to a source of vacuum during said heating, exposing said active metal to an atmosphere of said gas, colling said active metal below said elevated temperature, and forming an electrical discharge in said gas during said cooling step.
Claim 4
Dependent Claim
68 words
A process for sorbing gas into an active metal comprising the steps in sequence of heating said active metal to an elevated temperature in a vacuum chamber, connecting said chamber to a source of vacuum during said heating, exposing said active metal to an atmosphere of said gas, colling said active metal below said elevated temperature, and forming an electrical discharge in said gas during said cooling step.
Claim 5
Dependent Claim
108 words
A process for making a pulsed-neutron tube containing an active metal having sorbed therein a gas chosen from the group consisting of deuterium and tritium, said process comprising the steps in sequence of heating said tube while maintaining a vacuum therein to clean the interior thereof, introducing one of said gases of said group into said tube, cooling said active metal while forming a glow discharge within said one gas to sorb a portion of said one gas in said active metal, terminating said glow discharge, removing from said tube the nonsorbed remainder of said one gas, and introducing the other gas of said group into said tube.
Claim 6
Dependent Claim
108 words
A process for making a pulsed-neutron tube containing an active metal having sorbed therein a gas chosen from the group consisting of deuterium and tritium, said process comprising the steps in sequence of heating said tube while maintaining a vacuum therein to clean the interior thereof, introducing one of said gases of said group into said tube, cooling said active metal while forming a glow discharge within said one gas to sorb a portion of said one gas in said active metal, terminating said glow discharge, removing from said tube the nonsorbed remainder of said one gas, and introducing the other gas of said group into said tube.
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) | 1974-03-29 | 1974-09-28 | 1975-03-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-03-29 | 1978-09-28 | 1979-03-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-03-29 | 1982-09-28 | 1983-03-30 | $7700.00 | Window Closed / Lapsed |