| Patent application number | Description | Published |
|---|
| 20080279335 | CAGE FOR X-RAY TUBE BEARINGS - A bearing assembly mounted in an x-ray tube includes a bearing race and a plurality of bearing balls positioned adjacent to the bearing race. The plurality of bearing balls are positioned within a bearing cage. The bearing cage is configured to evenly space the bearing balls within the bearing cage and prevent contact between adjacent bearing balls, thereby eliminating the problems of skidding wear and dynamic impact load between adjacent bearing balls in the bearing assembly. | 11-13-2008 |
| 20080279336 | METHOD FOR COATING A CARBON-CARBON COMPOSITE X-RAY TUBE BEARING CAGE - A method for manufacturing an x-ray tube bearing cage includes the step of forming a bearing cage from a carbon-carbon composite material. A coating is applied to the carbon-carbon composite bearing cage. The coating includes an outer layer formed of a dry film lubricant. The coated carbon-carbon composite bearing cage is included in a bearing assembly in the x-ray tube and forms a lubricious enclosure for bearing balls positioned therein to minimize wear and heat generation in the bearing assembly. | 11-13-2008 |
| 20090279667 | METHOD AND APPARATUS OF DIFFERENTIAL PUMPING IN AN X-RAY TUBE - An x-ray tube includes an anode, a first chamber enclosing the anode and having a first pressure therein, a cathode, and a second chamber enclosing the cathode and having a second pressure therein. A separator is positioned between the first and second chambers and has a conductance limiter therein. | 11-12-2009 |
| 20100067661 | APPARATUS FOR A SURFACE GRADED X-RAY TUBE INSULATOR AND METHOD OF ASSEMBLING SAME - An insulator for a vacuum tube is disclosed and includes an electrically insulative bulk material and a first antiferroelectric coating applied to a first portion of the bulk material. | 03-18-2010 |
| 20100080357 | WIDE COVERAGE X-RAY TUBE AND CT SYSTEM - An x-ray tube is disclosed herein. The x-ray tube includes an anode assembly adapted to rotate generally about a rotational axis. The anode assembly includes a first target surface at least partially disposed at a first angle greater than 70 degrees with respect to the rotational axis and a second target surface at least partially disposed at a second angle greater than 70 degrees with respect to the rotational axis. The first target surface is adapted to emit a first x-ray beam and the second target surface is adapted to emit a second x-ray beam. A CT system is also disclosed. | 04-01-2010 |
| 20110013750 | METHOD AND APPARATUS OF DIFFERENTIAL PUMPING IN AN X-RAY TUBE - An x-ray tube includes an anode, a first chamber enclosing the anode and having a first pressure therein, a cathode, and a second chamber enclosing the cathode and having a second pressure therein. A separator is positioned between the first and second chambers and has a conductance limiter therein. | 01-20-2011 |
| 20110026681 | METHOD OF FAST CURRENT MODULATION IN AN X-RAY TUBE AND APPARATUS FOR IMPLEMENTING SAME - An x-ray imaging system includes a detector positioned to receive x-rays, and an x-ray tube coupled to a mount structure. The x-ray tube is configured to generate x-rays toward the detector and includes a target, a cathode cup, an emitter attached to the cathode cup and configured to emit a beam of electrons toward the target, the emitter having a length and a width, and a one-dimensional grid positioned between the emitter and the target and attached to the cathode cup at one or more attachment points. The one-dimensional grid includes a plurality of rungs that each extend in a direction of the width of the emitter, and the plurality of rungs are configured to expand and contract relative to the one or more attachment points without substantial distortion with respect to the emitter. | 02-03-2011 |
| 20110142193 | X-RAY TUBE FOR MICROSECOND X-RAY INTENSITY SWITCHING - An injector for an X-ray tube is presented. The injector includes an emitter to emit an electron beam, at least one focusing electrode disposed around the emitter, wherein the at least one focusing electrode focuses the electron beam and at least one extraction electrode maintained at a positive bias voltage with respect to the emitter, wherein the at least one extraction electrode controls an intensity of the electron beam. | 06-16-2011 |
