US3973156A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Anode disc for an X-ray tube comprising a rotary anode
Assignee: US Philips Corp
•
Filing: 1974-12-27
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Granted: 1976-08-03
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Expires: 1994-12-27
Abstract
Abstract A one-piece anode disc for a rotary anode X-ray tube is provided with a groove in the immediate vicinity of each side of the focal path to reduce thermal stresses in the path.
Inventors
- 👤 Peter Schreiber
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 08:33
CPC Classifications
H; H01; H01J; H01J35/00; H01J35/02; H01J35/04; H01J35/08; H01J35/10
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
43 words
An anode for a rotary anode x-ray tube, comprising a one-piece disc defining on a surface portion thereof an annular focal path, and a pair of annular grooves provided in said disc in proximity to and concentrically with respective sides of said path.
Claim 2
Dependent Claim
43 words
An anode for a rotary anode x-ray tube, comprising a one-piece disc defining on a surface portion thereof an annular focal path, and a pair of annular grooves provided in said disc in proximity to and concentrically with respective sides of said path.
Claim 3
Dependent Claim
22 words
An anode as claimed in claim 1, wherein the distance between the grooves is smaller than the width of the focal path.
References Cited (Backward Citations)
US2935633A
Cited
US3546511A
Cited
US3751702A
Cited
US3836803A
Cited
US3836804A
Cited
US3795832A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-08-03 | 1980-02-02 | 1980-08-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-08-03 | 1984-02-02 | 1984-08-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-08-03 | 1988-02-02 | 1988-08-03 | $7700.00 | Window Closed / Lapsed |