Patent · US Expired

Rotary anode X-ray tube having a sliding bearing

US4677651A · kind A · utility

58Cited by

5References

10Claims

0Family size

Assignee

U.S. Philips Corporation · US

Inventors

Walter Hartl · Hamburg, DE
Diethard Peter · Hamburg, DE
Klaus H. Reiber · Hamburg, DE

Key dates

Filing date	Dec 5, 1984
Grant date	Jun 30, 1987
Priority date	—
Expiry date	Dec 5, 2004

Classification

Technology area (CPC H)Electricity
CPC primaryH01J2235/1266
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

The invention relates to a rotary anode X-ray tube having a sliding bearing and a further bearing system. The further bearing system, preferably a magnetic bearing, is constructed so that it can absorb substantially entirely the axial and radial bearing forces, while the sliding bearing, which is preferably constructed as a spiral groove bearing with liquid metal lubrication, is shaped so that it absorbs the bearing forces only for a small fraction. It therefore has only a low friction, but it permits the supply of the anode current and especially an effective cooling of the anode disk.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.