Patent ID: 6480571
Filing Date: 2002-11-12
Classification: H01J

Abstract:
An anode drive assembly for use in connection with an x-ray tube having a rotating anode target, the anode drive assembly comprising:a target rotor connected to the anode target via a shaft portion that is comprised of a material having a first predetermined coefficient of thermal expansion; a bearing shaft rotationally supported by a bearing surface, the bearing shaft being comprised of a material having a second predetermined coefficient of thermal expansion; and a bearing hub that interconnects the bearing shaft with the target rotor, wherein the bearing hub is comprised of a material having a coefficient of thermal expansion that is intermediate to the first and the second predetermined coefficient of thermal expansion, the bearing hub further comprising: a radially extending flange portion including at least one raised portion extending from the flange portion, wherein the target rotor and the bearing hub directly contact one another at the at least one raised portion.