US4521903A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High power x-ray source with improved anode cooling
Assignee: MICRONIX PARTNERS A PARTNERSHIP CORP
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Filing: 1983-03-09
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Granted: 1985-06-04
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Expires: 2003-03-09
Abstract
Abstract In an x-ray source having a cathode emitting electron beams (15, 16) bombarding inner surfaces of an inverted conical anode target cooled by flowing water on its exterior, providing in place of the apex (14b) of the conical anode (34) a rearwardly facing upstream cylindrical extension (34b) which insures against apex tip burn-out by extending the cooling structure, area and mass to an upstream position to further dissipate heat energy flux generated by impingement of the electron beam. Portions functioning to effectively cool the anode target extend into non-beam illuminating regions of the target anode.
Inventors
- 👤 Martin Braun
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:24
CPC Classifications
H; H01; H01J; H01J35/00; H01J35/02; H01J35/04; H01J35/08; H01J35/10; H01J35/105; H01J35/106
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
118 words
In an X-ray generator having a target anode with a hollow substantially converging cross-sectional inside surface forming the principal region of bombardment by a beam of charged particles entering the hollow target anode from an open base end, to cause the emission of x-rays therefrom and having means for dissipating and removing generated heat in direction away from said region of bombardment, the improvement comprising: (a) said surface being truncated at its smaller diameter end opposite its larger diameter open base end; and (b) a hollow extension connected to said truncated end and extending in a direction away from said base end and for a distance greater than the top of a hypothetical apex of said converging surface.
Claim 2
Dependent Claim
118 words
In an X-ray generator having a target anode with a hollow substantially converging cross-sectional inside surface forming the principal region of bombardment by a beam of charged particles entering the hollow target anode from an open base end, to cause the emission of x-rays therefrom and having means for dissipating and removing generated heat in direction away from said region of bombardment, the improvement comprising: (a) said surface being truncated at its smaller diameter end opposite its larger diameter open base end; and (b) a hollow extension connected to said truncated end and extending in a direction away from said base end and for a distance greater than the top of a hypothetical apex of said converging surface.
Claim 3
Dependent Claim
47 words
The invention of claim 1 in which said hollow extension comprises an elongated section attached to said truncated end and a coalent diverter connected to said section extending in a rearward direction, said section and said diverter forming said means to remove heat generated by said bombardment.
Claim 4
Dependent Claim
27 words
The invention of claim 1 in which said extension is a solid material of sufficient mass to dissipate heat generated in said target anode by said bombardment.
Claim 5
Dependent Claim
50 words
The invention of claim 1 wherein said cooling means includes a cylindrical conduit extending contiguously with said converging surface and said extension, said conduit forming a cylindrical annulus between a portion of in inner peripherl surface and an outer peripheral surface of said extension shaped to direct liquid coolant flow.
Claim 6
Dependent Claim
28 words
The invention of claim 4 in which said conduit includes a rounded entrance section to introduce coolant onto the exterior peripheral surfaces of said extension and converging surface.
Claim 7
Dependent Claim
51 words
The invention of claim 4 in which said cylindrical conduit has a sloped inner peripheral surface and said converging surface has an outer periphery extending toward its base of greater slope, such that the annulus between said surfaces becomes narrower along a direction from said truncated end to said base end.
Claim 8
Dependent Claim
16 words
The invention of claim 2 in which said diverter extends into a source of coolant fluid.
Claim 9
Dependent Claim
28 words
The invention of claim 2 further including a diverter attached to said extension, said diverter being juxtaposed at and centrally deposed in an entrance section of said conduit.
Claim 10
Dependent Claim
16 words
The invention of claim 2 in which said elongated section directly extends from said truncated end.
Claim 11
Dependent Claim
16 words
The invention of claim 2 in which said elongated section is integral with said truncated end.
Claim 12
Dependent Claim
21 words
The invention of claim 2 including a hollow reverse conical bridging member extending between said elongated section and said converging surface.
Claim 13
Dependent Claim
35 words
The invention of claim 2 in which said elongated section extends inwardly upstream of coolent flow a sufficient distance so that a charge particle beam may not penetrate beyond the hollow interior of said extension.
Claim 14
Dependent Claim
21 words
The invention of claim 2 in which said elongated section is in a normally non-beam bombarded region of said target anode.
Claim 15
Dependent Claim
28 words
The invention of claim 2 in which a portion of said elongated section is sufficiently cooled to permit illumination of said portion by said charged particle beam bombardment.
Claim 16
Dependent Claim
25 words
The invention of claim 1 wherein said hollow extension has an angularly truncated flat wall section extending across the longitudinal axis of said hollow extension.
Claim 17
Dependent Claim
29 words
The invention of claim 15 wherein said truncated flat wall section intercepts x-rays entering said hollow extension in substantial parallelism to the longitudinal axis of said surface of revolution.
Claim 18
Dependent Claim
46 words
The invention of claim 4 wherein said hollow extension has an angularly truncated flat wall section extending across the longitudinal axis of said hollow extension and said cylindrical conduit has an inwardly facing flat portion spaced from and generlly coincident to said truncated flat wall section.
Claim 19
Dependent Claim
42 words
The invention of claim 1 wherein said target anode comprises a rotating cylinder including a V-groove kerf having converging sides extending inwardly from a peripheral outside edge of sid cylinder and wherein said hollow extension extends radially inwardly from said converging sides.
Claim 20
Dependent Claim
16 words
The invention of claim 1 in which said converging surface is a conical surface of revolution.
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) | 1988-06-03 | 1988-12-03 | 1989-06-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-06-03 | 1992-12-03 | 1993-06-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-06-03 | 1996-12-03 | 1997-06-04 | $7700.00 | Window Closed / Lapsed |