DUAL SUSPENSION BEARINGS FOR X-RAY TUBE

WIPO Patent Application WO2002025690

A3

A high energy x-ray tube includes an evacuated chamber (12) containing a rotor (34) which rotates an anode (10) through a stream of electrons (A) in order to generate an x-ray beam (B). The rotor includes an outer cylindrical armature (38) and a bearing assembly (C) having a bearing shaft (52) centrally aligned with a longitudinal axis (Z) of the rotor. An inner bearing member (42) is concentrically spaced from the bearing shaft and defines forward and rearward bearing grooves (46F, 46R). Forward and rearward bearing races (70F, 70R) are positioned between the inner bearing member and the bearing shaft. A plurality of forward and rearward bearings (48F, 48R) are dimensioned to be received between the forward and rearward bearing races and bearing grooves, respectively. Forward and rearward biasing spring washers (74F, 74R) apply a continuous, opposite biasing force to the forward and rearward bearing races, respectively, so that the bearing races urge their respective ball bearings into an optimal operating position.

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PANASIK CHERYL L
RANCHERO NICANOR C

PCT/US2001/029698

February 13, 2003

September 21, 2001

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KONINKL PHILIPS ELECTRONICS NV (NL)

F16C19/18; F16C25/08; F16C33/32; F16C33/58; F16C35/073; F16C37/00; F16C43/04; H01J35/10; (IPC1-7): H01J35/10; F16C25/08

GB824724A	1959-12-02
US4569070A	1986-02-04
GB779043A	1957-07-17
EP0351225A2	1990-01-17
US2625664A	1953-01-13
US2648025A	1953-08-04
EP0507549A1	1992-10-07
US4470645A	1984-09-11

PATENT ABSTRACTS OF JAPAN vol. 008, no. 029 (E - 226) 7 February 1984 (1984-02-07)

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