Low thermal resistance bearing assembly for x-ray device
US6693990B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | May 14, 2001 |
| Grant date | Feb 17, 2004 |
| Priority date | — |
| Expiry date | May 28, 2021 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J2235/1208
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A bearing assembly for a rotating anode x-ray device. The bearing assembly includes a shaft having a flange at one end for attachment of the anode thereto. The shaft defines front and rear inner races and includes a plurality of extended surfaces. Front and rear outer race elements define front and rear outer races, respectively, corresponding to the front and rear inner races, respectively, defined by the shaft. The front and rear outer race elements cooperate with the shaft to confine front and rear ball sets which facilitate rotary motion of the shaft. A spacer including extended surfaces assists in the positioning of the front and rear outer race elements in a bearing housing. The extended surfaces of the shaft and spacer, in conjunction with emissive coatings provided on various portions of selected components of the bearing assembly, facilitate a relative improvement in heat transfer out of the bearing assembly.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.