US4097760A
Expired / Lapsed
US
⏱️ 0.0 years remaining
X-ray tube having bearing lubrication
Assignee: Philips Nuclear Medicine Inc
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Filing: 1976-07-21
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Granted: 1978-06-27
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Expires: 1996-07-21
Abstract
Abstract An X-ray tube comprises a rotatable anode supported by a bearing structure having portions lubricated by lead. The bearing structure includes a grooved outer race which is coated with ion-implanted lead, an inner race comprising a grooved portion of a spindle, and a plurality of lead-burnished balls disposed between the races.
Inventors
- 👤 Gabriel Cinelli
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 10:42
CPC Classifications
H; H01; H01J; H01J35/00; H01J35/02; H01J35/04; H01J35/08; H01J35/10; H01J35/101; H01J35/1017; H01J35/1024; H01J2235/00; H01J2235/10; H01J2235/1046; H01J2235/1053; H01J2235/1066; Y; Y10; Y10S; Y10S384/00; Y10S384/90; Y10S384/912; Y10T; Y10T29/00; Y10T29/49; Y10T29/49636; Y10T29/49702
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
43 words
An X-ray tube, comprising: (a) an evacuated envelope; (b) a cathode and an anode disposed within said envelope; (c) means supporting said anode for rotation, said means including a bearing having portions lubricated by the ion implantation of a thin layer of metal.
Claim 2
Dependent Claim
43 words
An X-ray tube, comprising: (a) an evacuated envelope; (b) a cathode and an anode disposed within said envelope; (c) means supporting said anode for rotation, said means including a bearing having portions lubricated by the ion implantation of a thin layer of metal.
Claim 3
Dependent Claim
11 words
The X-ray tube of claim 1, wherein said metal is lead.
Claim 4
Dependent Claim
36 words
The X-ray tube of claim 1, wherein said bearing includes an outer race, an inner race, and a plurality of rolling members disposed therebetween, at least the coolest portion of said bearing having lead implanted thereon.
Claim 5
Dependent Claim
12 words
The X-ray tube of claim 3, wherein said outer race is lead-implanted.
Claim 6
Dependent Claim
17 words
The X-ray tube of claim 4, wherein said rolling members are balls and said balls are lead-burnished.
Claim 7
Dependent Claim
23 words
The X-ray tube of claim 5, wherein said inner race comprises a groove in said spindle, said groove not being coated with lead.
References Cited (Backward Citations)
US3720853A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-06-26 | 1981-12-26 | 1982-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-06-26 | 1985-12-26 | 1986-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-06-26 | 1989-12-26 | 1990-06-27 | $7700.00 | Window Closed / Lapsed |