Patent US1514753A successfully refreshed from Google Patents.
US3869634A
Expired / Lapsed
US
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Rotating x-ray target with toothed interface
Assignee: General Electric Co
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Filing: 1973-05-11
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Granted: 1975-03-04
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Expires: 1993-05-11
Abstract
Abstract A rotating X-ray target with an improved interface of a toothed configuration including serrations in the form of hills and valleys and in a regular pattern between one or more layers of the materials forming the target. Use of the serrated configuration at the interface between the target layer and the body provides a stronger bond between the two, a more uniform layer and prolongs the useful life of the target by resisting cracking and deformation of the focal track as well as resisting weakening of or separation of the bond between the target layer and the body.
Inventors
- 👤 Ronald D Konieczynski
- 👤 Allan H Springmeyer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 10:13
CPC Classifications
H; H01; H01J; H01J35/00; H01J35/02; H01J35/04; H01J35/08; H01J35/10; H01J35/108; H01J2235/00; H01J2235/08; H01J2235/083; H01J2235/084; Y; Y10; Y10T; Y10T428/00; Y10T428/12; Y10T428/12451; Y10T428/12493; Y10T428/12771; Y10T428/12806; Y10T428/12826; Y10T428/12833; Y10T428/1284
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
56 words
An x-ray tube rotary target comprising, in combination, a refractory metal target face; and a refractory material body joined to the target face by powdered metallurgy technique along an interface to form a unitary structure; the interface including a multiplicity of mating hills and valleys in a predetermined pattern in the body and the target face.
Claim 2
Dependent Claim
56 words
An x-ray tube rotary target comprising, in combination, a refractory metal target face; and a refractory material body joined to the target face by powdered metallurgy technique along an interface to form a unitary structure; the interface including a multiplicity of mating hills and valleys in a predetermined pattern in the body and the target face.
Claim 3
Dependent Claim
30 words
An X-ray tube target according to claim 1 wherein the multiplicity of hills and valleys include continuous curved projections and grooves in the body and target face at the interface.
Claim 4
Dependent Claim
23 words
An X-ray tube target according to claim 2 wherein the projections are V-shaped; and the grooves are V-shaped and mate with the projections.
Claim 5
Dependent Claim
30 words
An X-ray tube target according to claim 2 wherein the projections include a plurality of concentric circular projections; and the grooves are concentric and circular and mate with the projections.
Claim 6
Dependent Claim
25 words
An X-ray tube target according to claim 1 wherein the multiplicity of hills and valleys include a multiplicity of distinct spaced apart depressions and projections.
Claim 7
Dependent Claim
23 words
An X-ray tube target according to claim 5 wherein the projections are conical, and the depressions are conical and mate with the projections.
Claim 8
Dependent Claim
34 words
An X-ray tube target according to claim 1 wherein the refractory metal target face is predominantly tungsten, the refractory material body is predominantly molybdenum, and the tungsten and molybdenum are alloyed at the interface.
Claim 9
Dependent Claim
42 words
An X-ray tube target according to claim 1 wherein the hills are each of the same height in the range of 0.005-0.10 inches, and each of the same width in the range of 0.010-0.20 inches; and the valleys mate with the hills.
Claim 10
Dependent Claim
51 words
An X-ray tube rotary target according to claim 1 wherein the target further includes a reinforcement layer of metal within the body and joined to the body along additional interfaces; the additional interfaces including a multiplicity of mating hills and valleys in a predetermined pattern in the reinforcement and the body.
Claim 11
Dependent Claim
30 words
An X-ray tube rotary target according to claim 9 wherein the refractory metal target face is predominantly tungsten; the refractory body is predominantly molybdenum; and the reinforcement is predominantly tungsten.
References Cited (Backward Citations)
US1132442A
Cited
US3710170A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-03-03 | 1978-09-02 | 1979-03-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-03-03 | 1982-09-02 | 1983-03-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-03-03 | 1986-09-02 | 1987-03-04 | $7700.00 | Window Closed / Lapsed |