US4914684A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Titanium carbide coating of bearing components
Assignee: General Electric Co
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Filing: 1989-03-31
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Granted: 1990-04-03
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Expires: 2009-03-31
Abstract
Abstract A bearing retainer for mounting for a bearing in an X-ray tube, the X-ray tube having a rotating anode supported on an anode shaft held within a hollow anode stem, the retainer being slidably fitted into a hollow anode stem to hold one bearing coaxially with the anode shaft and to permit axial motion of the bearing so held, where the sliding surface of the bearing retainer is coated with titanium carbide, and wherein the bearing retainer includes a bearing flange not coated with titanium carbide which may be swaged around the outer race of the bearing to hold the bearing.
Inventors
- 👤 Kamleshwar Upadhya
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 06:52
CPC Classifications
F; F16; F16C; F16C25/00; F16C25/06; F16C25/08; 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
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
93 words
In an X-ray tube having a hollow anode stem having an inner surface and containing an anode shaft supported by one or more bearings having inner and outer races, a bearing retainer comprising: a retainer substrate means for slidably fitting coaxially within the hollow anode stem; a bearing sleeve means coaxially affixed to the retainer substrate for holding an outer race of a bearing fixedly and coaxially with respect to the retainer substrate; a coating means applied to the outer circumference of the retainer substrate for lubricating the sliding of the retainer means.
Claim 2
Dependent Claim
93 words
In an X-ray tube having a hollow anode stem having an inner surface and containing an anode shaft supported by one or more bearings having inner and outer races, a bearing retainer comprising: a retainer substrate means for slidably fitting coaxially within the hollow anode stem; a bearing sleeve means coaxially affixed to the retainer substrate for holding an outer race of a bearing fixedly and coaxially with respect to the retainer substrate; a coating means applied to the outer circumference of the retainer substrate for lubricating the sliding of the retainer means.
Claim 3
Dependent Claim
65 words
The bearing retainer of claim 1 wherein the outer race includes a first and second opposing radial surface and the bearing sleeve includes: a first radial land engaging a first radial surface of the outer race; and, a flange means deformably engaging the second radial surface of the outer race whereby the outer race is captured between the first radial land and the flange means.
Claim 4
Dependent Claim
23 words
The bearing retainer of claim 1 wherein the coating material is selected from the group consisting of hafnium carbide, titanium carbide, zirconium carbide.
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) | 1993-04-02 | 1993-10-02 | 1994-04-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-04-02 | 1997-10-02 | 1998-04-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-04-02 | 2001-10-02 | 2002-04-03 | $7700.00 | Window Closed / Lapsed |