US 2004/0062343 A1 · Tapered roller bearing

Abstract

In a diagnostic system, having a rotating gantry (24) and a stationary gantry (22), a bearing race (50) rotates with surface portions having varying linear velocities in accordance with distance from an axis (A) of rotation. Tapered roller bearings (46) interface the bearing race (50) and are conically shaped to velocity match the variable linear surface velocity race (50). The race (50) preferably includes two faces, which provide both axial and radial supporting surfaces for the bearings (46) to interface. The bearings (46) are disposed about the race (50) in pairs. A drive motor (52) is connected to one of the bearings (46) to rotate the gantry (24).

Claims20

Dependent claims

A diagnostic imaging device comprising:

a first, stationary gantry;
a second, rotating gantry having at least two bearing races, the second gantry rotating around a subject receiving region;
a plurality of tapered roller bearings for providing support to the rotating gantry to rotate around an axis of rotation.

Dependencies are inferred from the claim text.

Facts

Application

10/255,927Filed 26 Sep 2002

Published

1 Apr 2004

Term ends

Not estimatedThe source records don’t support an estimate.

Classification9 codes

F16C 19/50
Bearings with rolling contact, for exclusively rotary movement: other types of ball or roller bearings
A61B 6/035
Transmission computed tomography [CT]: mechanical aspects of CT
F16C 13/04
Bearings: bearings with only partial enclosure of the member to be borne; Bearings with local support at two or more points
F16C 19/507
Other types of ball or roller bearings: with rolling elements journaled in one of the moving parts, e.g. stationary rollers to support a rotating part

Tapered roller bearing

Life of this patent

Tapered roller bearing

Life of this patent

Abstract

Claims20