Patent US3606137A successfully refreshed from Google Patents.
US3900751A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotating anode x-ray tube
Assignee: Varian Medical Systems Inc
•
Filing: 1974-04-08
•
Granted: 1975-08-19
•
Expires: 1994-04-08
Abstract
Abstract An x-ray tube having a rotatable electrode subject to deformation when heated, and subjected to centrifugal force and means located adjacent said electrode for restraining the electrode from such deformation, said electrode and means having interfitting portions which reduce the tendency of the electrode to alter its shape when so treated.
Inventors
- 👤 William P Holland
- 👤 Robert E Azud
- 👤 Thomas J Koller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 11:35
CPC Classifications
H; H01; H01J; H01J35/00; H01J35/02; H01J35/04; H01J35/08; H01J35/10
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
144 words
An x-ray tube comprising an evacuated envelope containing an anode including a target, means for rotating said target about a perpendicular axis, cathode means spaced from said anode for generating a beam of electrons and directing same onto one side of said target, and retainer means engaging said target and physically restraining it from deformation resulting from heat generated by impingement of electrons thereon, said retainer means comprising a member disposed adjacent the side of the target opposite the cathode means, the adjacent surfaces of said target and member having interfitting means for physically restraining the target from deformation when thermally stressed, said interfitting means comprising at least one ridge on one of said adjacent surfaces and at least one aligned groove in the other of said adjacent surfaces, said ridge residing within said groove, said ridge and groove being provided with interlocking means.
Claim 2
Dependent Claim
144 words
An x-ray tube comprising an evacuated envelope containing an anode including a target, means for rotating said target about a perpendicular axis, cathode means spaced from said anode for generating a beam of electrons and directing same onto one side of said target, and retainer means engaging said target and physically restraining it from deformation resulting from heat generated by impingement of electrons thereon, said retainer means comprising a member disposed adjacent the side of the target opposite the cathode means, the adjacent surfaces of said target and member having interfitting means for physically restraining the target from deformation when thermally stressed, said interfitting means comprising at least one ridge on one of said adjacent surfaces and at least one aligned groove in the other of said adjacent surfaces, said ridge residing within said groove, said ridge and groove being provided with interlocking means.
Claim 3
Dependent Claim
42 words
An x-ray tube as set forth in claim 1 wherein said interlocking means comprises a slot provided throughout the length of the groove in a side wall thereof, and an inwardly directed rim on said ridge shaped to interfit within said slot.
Claim 4
Dependent Claim
150 words
An x-ray tube comprising an evacuated envelope containing an anode including a target, means for rotating said anode about a perpendicular axis, cathode means spaced from said anode for generating a beam of electrons and directing same onto one side of the target, and supporting members disposed on opposite sides of said target, the member on the side of the target opposite the cathode means having restraining means engaging the target and physically restraining it from deformation resulting from heat generated by impingement of electrons thereon, said restraining means comprising interfitting means on the adjacent surfaces of the target and member for effecting said restraining of the target, said interfitting means comprising at least one ridge on one of said adjacent surfaces and at least one aligned groove in the other of said adjacent surfaces, said ridge residing within said groove, said ridge and groove being provided with interlocking means.
Claim 5
Dependent Claim
150 words
An x-ray tube comprising an evacuated envelope containing an anode including a target, means for rotating said anode about a perpendicular axis, cathode means spaced from said anode for generating a beam of electrons and directing same onto one side of the target, and supporting members disposed on opposite sides of said target, the member on the side of the target opposite the cathode means having restraining means engaging the target and physically restraining it from deformation resulting from heat generated by impingement of electrons thereon, said restraining means comprising interfitting means on the adjacent surfaces of the target and member for effecting said restraining of the target, said interfitting means comprising at least one ridge on one of said adjacent surfaces and at least one aligned groove in the other of said adjacent surfaces, said ridge residing within said groove, said ridge and groove being provided with interlocking means.
Claim 6
Dependent Claim
42 words
An x-ray tube as set forth in claim 3 wherein said interlocking means comprises a slot provided throughout the length of the groove in a side wall thereof, and an inwardly directed rim on said ridge shaped to interfit within said slot.
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) | 1978-08-18 | 1979-02-17 | 1979-08-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-08-18 | 1983-02-17 | 1983-08-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-08-18 | 1987-02-17 | 1987-08-19 | $7700.00 | Window Closed / Lapsed |