Patent US3731128A successfully refreshed from Google Patents.
US3731128A
Expired / Lapsed
US
⏱️ 0.0 years remaining
X-ray tube with rotary anodes
Assignee: Siemens AG
•
Filing: 1972-03-08
•
Granted: 1973-05-01
•
Expires: 1992-03-08
Abstract
Abstract An X-ray tube has a rotary anode which is a compound body of heavy metal and graphite parts, the focal spot path lying upon the heavy metal. The invention is particularly characterized by the provision of a layer of metal selected from the group consisting of tantalum and/or tungsten and located between the heavy metal part and the graphite part. The heavy metal part consists at least primarily of molybdenum, is shaped as a plate and is soldered to the graphite part outside of the focal spot path.
Inventors
- 👤 K Haberrecker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 21:57
CPC Classifications
H; H01; H01J; H01J35/00; H01J35/02; H01J35/04; H01J35/08; H01J35/10; H01J35/108
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
22 words
An X-ray tube in accordance with claim 1, wherein the graphite part is located upon the bottom surface of the metal part.
Claim 2
Dependent Claim
32 words
An X-ray tube in accordance with claim 2, wherein the entire bottom surface of the metal part is flat and wherein the graphite part consists of a plate covering said bottom surface.
Claim 3
Dependent Claim
21 words
An X-ray tube in accordance with claim 2, comprising additional graphite parts located upon the upper side of said metal part.
Claim 4
Dependent Claim
43 words
An X-ray tube in accordance with claim 1, comprising two layers located on opposite sides of the metal part and two graphite parts consisting of plates soldered to said layers, the focal point path being located upon the periphery of said metal part.
Claim 5
Dependent Claim
29 words
An X-ray tube in accordance with claim 5, comprising a rotor connected with the anode, the graphite part directEd toward the rotor being thinner than the other graphite part.
Claim 6
Dependent Claim
22 words
An X-ray tube in accordance with claim 5, wherein the soldering of said graphite parts consists of a high melting soldering layer.
Claim 7
Dependent Claim
25 words
An X-ray tube in accordance with claim 7, wherein the soldering layer consists of a metal selected from the group consisting of hafnium and zirconium.
References Cited (Backward Citations)
DE1913793A1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-04-30 | 1976-10-30 | 1977-05-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-04-30 | 1980-10-30 | 1981-05-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-04-30 | 1984-10-30 | 1985-05-01 | $7700.00 | Window Closed / Lapsed |