Patent ID: 11920630
Assignee: KONINKLIJKE PHILIPS N.V.
Field: Mechanical elements (Mechanical engineering)
Classification: CPC F | IPC F

Claim 0:
1. A self-lubricated sliding bearing for a rotary X-ray tube, comprising:
a first bearing member;
a second bearing member configured to concentrically enclose a portion of the first bearing member; and
a lubricant comprised in a gap between cooperating surfaces of the first bearing member and the second bearing member;
wherein the cooperating surface of the second bearing member or the first bearing member comprises a first region comprising a pumping pattern configured to pump the lubricant;
wherein the cooperating surface of the second bearing member or the first bearing member comprises a second region having a modified pumping pattern or a smooth surface;
wherein the second region is disposed on the cooperating surface of the second bearing member or the first bearing member such that a bearing force generated by the pumping action of the lubricant opposes a radial load force exerted on the self-lubricated sliding bearing to reduce an eccentricity of a longitudinal axis of the first bearing member with respect to a longitudinal axis of second bearing member;
wherein the modified pumping pattern comprises a surface having a groove depth and/or width that becomes continuously shallower around a circumferential length compared to the groove depth and/or width of the pumping pattern of the first region.