Patent US4146815A successfully refreshed from Google Patents.
US4146815A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Revolving anode for an x-ray tube filled with liquid metal
Assignee: Eurotungstene SA
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Filing: 1977-12-22
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Granted: 1979-03-27
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Expires: 1997-12-22
Abstract
Abstract A revolving anode for an X-ray tube comprising a hollow rotating shell including a support composed of molybdenum or molybdenum-based alloy and a thin layer of tungsten, the shell being filled with liquid metal or alloy such as sodium. The zone of impact of the electrons on the shell essentially comprises the layer of tungsten or tungsten alloy in direct contact with the liquid metal.
Inventors
- 👤 Bruno Childeric
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 14:33
CPC Classifications
H; H01; H01J; H01J35/00; H01J35/02; H01J35/04; H01J35/08; H01J35/10; H01J35/105; H01J35/106
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
69 words
A revolving anode for an X-ray tube comprising a hollow rotating shell including a support composed of molybdenum or molybdenum-based alloy and a thin layer of tungsten, the shell being filled with a metal or alloy which is liquid or liquefies at a relatively low temperature, the zone of impact of the electrons comprises essentially the layer of tungsten or tungsten alloy in direct contact with the liquid metal.
Claim 2
Dependent Claim
69 words
A revolving anode for an X-ray tube comprising a hollow rotating shell including a support composed of molybdenum or molybdenum-based alloy and a thin layer of tungsten, the shell being filled with a metal or alloy which is liquid or liquefies at a relatively low temperature, the zone of impact of the electrons comprises essentially the layer of tungsten or tungsten alloy in direct contact with the liquid metal.
Claim 3
Dependent Claim
11 words
The anode of claim 1 wherein the liquid metal is sodium.
Claim 4
Dependent Claim
52 words
The anode of claim 1 wherein the shell comprises opposed brackets of molybdenum or molybdenum-based alloy, one of said brackets constituting said support, said support having molybdenum areas thereon in direct contact with the second bracket, with the support and the second bracket being joined by welding in the areas of contact.
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) | 1982-03-26 | 1982-09-25 | 1983-03-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-03-26 | 1986-09-25 | 1987-03-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-03-26 | 1990-09-25 | 1991-03-27 | $7700.00 | Window Closed / Lapsed |