US4482837A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotary anode for an X-ray tube and a method for manufacturing the same
Assignee: Toshiba Corp
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Filing: 1983-07-15
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Granted: 1984-11-13
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Expires: 2003-07-15
Abstract
Abstract The present invention provides a rotary anode for an X-ray tube which comprises an anode body formed of graphite, a preformed sheet formed of rhenium and bonded to the top surface of the anode body, and a target layer formed of tungsten or an alloy thereof and bonded to the top surface of the preformed sheet. This rotary anode may further comprise a preformed plate formed of molybdenum and interposed between and bonded to the preformed sheet and the target layer. Also disclosed is a method for manufacturing the rotary anode.
Inventors
- 👤 Hideo Koizumi
- 👤 Isamu Koseki
- 👤 Tadashi Morita
- 👤 Shu Yamazaki
- 👤 Yoshio Fukuhara
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 18:22
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
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
66 words
A rotary anode for an X-ray tube comprising: an anode body formed of graphite; a preformed sheet formed of rhenium having a thickness of 15 to 200 μm and bonded to the top surface of said anode body; and a target layer formed of tungsten or an alloy thereof and bonded to the top surface of said preformed sheet by a bonding agent incorporating rhenium paste.
Claim 2
Dependent Claim
66 words
A rotary anode for an X-ray tube comprising: an anode body formed of graphite; a preformed sheet formed of rhenium having a thickness of 15 to 200 μm and bonded to the top surface of said anode body; and a target layer formed of tungsten or an alloy thereof and bonded to the top surface of said preformed sheet by a bonding agent incorporating rhenium paste.
Claim 3
Dependent Claim
28 words
A rotary anode according to claim 1 further comprising a preformed plate formed of molybdenum and interposed between and bonded to said preformed sheet and said target layer.
Claim 4
Dependent Claim
19 words
A rotary anode according to claim 1, wherein said target layer has a thickness of 0.5 to 2 mm.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-11-13 | 1988-05-14 | 1988-11-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-11-13 | 1992-05-14 | 1992-11-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-11-13 | 1996-05-14 | 1996-11-13 | $7700.00 | Window Closed / Lapsed |