US3753021A
Expired / Lapsed
US
⏱️ 0.0 years remaining
X-ray tube anode target
Assignee: Varian Medical Systems Inc
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Filing: 1972-04-03
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Granted: 1973-08-14
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Expires: 1992-04-03
Abstract
Abstract An X-ray tube having a rotating anode comprising a target which is provided with improved heat dissipation characteristics by means of an X-ray generating member and an associated heat sink of high thermal storage capacity material which during operation of the tube more closely engages the X-ray generating member for providing efficient thermal conductivity therebetween.
Inventors
- 👤 M Braun
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 23:18
CPC Classifications
H; H01; H01J; H01J35/00; H01J35/02; H01J35/04; H01J35/08; H01J35/10
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
96 words
A rotating target assembly for an X-ray tube, comprising a rotatable shaft, a target member and adjacent heat sink means carried by said shaft for rotation therewith, said heat sink means being disposed adjacent said member, first supporting means rigidly mounting said target member on the shaft, and second supporting means yieldably mounting said heat sink member on the shaft independently of said target member, said heat sink means during rotation of the sahft being responsive to centrifugal force and consequently movable into close heat conductive physical contact with the target member to remove heat therefrom.
Claim 2
Dependent Claim
96 words
A rotating target assembly for an X-ray tube, comprising a rotatable shaft, a target member and adjacent heat sink means carried by said shaft for rotation therewith, said heat sink means being disposed adjacent said member, first supporting means rigidly mounting said target member on the shaft, and second supporting means yieldably mounting said heat sink member on the shaft independently of said target member, said heat sink means during rotation of the sahft being responsive to centrifugal force and consequently movable into close heat conductive physical contact with the target member to remove heat therefrom.
Claim 3
Dependent Claim
65 words
A target assembly as set forth in claim 1 wherein said target member is annular in shape, and said heat sink means comprises an annular arrangement of individual heat sink members disposed adjacent the inner periphery of the annular target member, and wherein said heat sink members are individually movable in response to centrifugal force into contact with the adjacent portion of the target member.
Claim 4
Dependent Claim
36 words
A target assembly as set forth in claim 2 wherein said second supporting means includes resilient means for normally urging said heat sink members into contact with said target member in the absence of centrifugal force.
Claim 5
Dependent Claim
23 words
A rotating target assembly as set forth in claim 1 wherein said target member is molybdenum and said heat sink means is beryllia.
Claim 6
Dependent Claim
148 words
A rotating anode X-ray tube comprising an evacuated envelope, a cathode within the envelope for generating a beam of electrons, an anode in the envelope in spaced relation to the cathode for generating X-radiation in response to impingement by said electrons said anode comprising a shaft, means for rotating said shaft, and a target assembly mounted on said shaft for rotation therewith, said target assembly comprising a target member carried by said shaft for rotation through said beam of electrons, first supporting means rigidly mounting said target member on the shaft, heat sink means disposed adjacent said target member, and second supporting means yieldably mounting said heat sink means on the shaft independently of said target member, said heat sink means during rotation of said shaft being responsive to centrifugal force and consequently movable into close heat conductive physical contact with the target member to remove heat therefrom.
Claim 7
Dependent Claim
148 words
A rotating anode X-ray tube comprising an evacuated envelope, a cathode within the envelope for generating a beam of electrons, an anode in the envelope in spaced relation to the cathode for generating X-radiation in response to impingement by said electrons said anode comprising a shaft, means for rotating said shaft, and a target assembly mounted on said shaft for rotation therewith, said target assembly comprising a target member carried by said shaft for rotation through said beam of electrons, first supporting means rigidly mounting said target member on the shaft, heat sink means disposed adjacent said target member, and second supporting means yieldably mounting said heat sink means on the shaft independently of said target member, said heat sink means during rotation of said shaft being responsive to centrifugal force and consequently movable into close heat conductive physical contact with the target member to remove heat therefrom.
Claim 8
Dependent Claim
65 words
An X-ray tube as set forth in claim 5 wherein said target member is annular in shape, and said heat sink means comprises an annular arrangement of individual heat sink members disposed adjacent the inner periphery of the annular target member, and wherein said heat sink members are individually movable in response to centrifugal force into contact with the adjacent portion of the target member.
Claim 9
Dependent Claim
36 words
An X-ray tube as set forth in claim 6 wherein said second supporting means includes resilient means for normally urging said heat sink members into contact with said target member in the absence of centrifugal force.
References Cited (Backward Citations)
DE1099095B
Cited
GB1219042A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-08-13 | 1977-02-12 | 1977-08-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-08-13 | 1981-02-12 | 1981-08-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-08-13 | 1985-02-12 | 1985-08-14 | $7700.00 | Window Closed / Lapsed |