Class / Patent application number | Description | Number of patent applications / Date published |
378132000 | With specific bearing means | 26 |
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 |
20090129548 | BEARING UNIT FOR ROTARY ANODES OF X-RAY TUBES - The invention relates to a bearing unit ( | 05-21-2009 |
20110255668 | DEVICE FOR PROVIDING A HIGH ENERGY X-RAY BEAM - The invention relates to X-ray analytical instruments (RX), more precisely a device for providing a high energy X-ray beam, typically above 4 keV, for X-ray analysis applications. The device comprises an X-ray tube with a turning anode and an X-ray lens for shaping the beam. | 10-20-2011 |
20110280376 | BEARING WITHIN AN X-RAY TUBE - The invention describes an X-ray tube for generating X-radiation, wherein the tube comprises a rotary structure, which comprises a rotating anode, a stationary structure for rotatably supporting the rotary structure, a hydrodynamic bearing, which is arranged between the rotary structure and the stationary structure, wherein the bearing comprises a gap between the rotary structure and the stationary structure, means for stabilising the dimensions of the gap with respect to distortions because of thermo-mechanical causes. A further aspect, which is described, is a method for manufacturing the tube according to the invention, wherein means for stabilising the dimensions of the gap are arranged. It is also described an X-ray system for diagnostic use comprising the tube according to the invention, wherein the X-ray system is adapted to stabilise the dimensions of the gap. Another aspect of the specification is a method for manufacturing the X-ray system. | 11-17-2011 |
20120106710 | X-RAY TUBE THERMAL TRANSFER METHOD AND SYSTEM - The embodiments disclosed herein relate to the thermal regulation of components within an X-ray tube, and more specifically to heat transfer between the anode and the rotary mechanism to which the anode is attached. For example, in one embodiment, an X-ray tube is provided. The X-ray tube generally includes a fixed shaft, a rotating bearing sleeve disposed about the fixed shaft and configured to rotate with respect to the fixed shaft via a rotary bearing, an electron beam target disposed about the bearing sleeve and configured to rotate with the bearing sleeve, and a thermally conductive, deformable metallic gasket disposed between the target and the bearing sleeve and configured to conduct heat between the target and the bearing sleeve in operation. | 05-03-2012 |
20120106711 | X-RAY TUBE WITH BONDED TARGET AND BEARING SLEEVE - The embodiments disclosed herein relate to the thermal regulation of components within an X-ray tube by transferring heat between the anode and the rotary mechanism to which the anode is attached. For example, in one embodiment, an X-ray tube is provided. The X-ray tube generally includes a fixed shaft, a rotating bearing sleeve disposed about the fixed shaft and configured to rotate with respect to the fixed shaft via a rotary bearing, and an electron beam target disposed about the bearing sleeve and configured to rotate with the bearing sleeve. The electron beam target is permanently bonded to the bearing sleeve. | 05-03-2012 |
20120106712 | ENHANCED BARRIER FOR LIQUID METAL BEARINGS - The present disclosure is directed towards the prevention of high voltage instabilities within X-ray tubes. For example, in one embodiment, an X-ray tube is provided. The X-ray tube generally includes a stationary member, and a rotary member configured to rotate with respect to the stationary member during operation of the X-ray tube. The X-ray tube also includes a liquid metal bearing material disposed in a space between the shaft and the sleeve, a seal disposed adjacent to the space to seal the liquid metal bearing material in the space, and an enhanced surface area material disposed on a side of the seal axially opposite the space and configured to trap within the enhanced surface area material liquid metal bearing material that escapes the seal. | 05-03-2012 |
20130022174 | BEARING SYSTEM FOR A ROTARY ANODE OF AN X-RAY TUBE - The present invention relates to a bearing system ( | 01-24-2013 |
20130034214 | ROTARY-ANODE X-RAY TUBE WITH REDUCED RADIAL SEALING - The invention relates to a rotary- anode X-ray tube which includes a sleeve bearing having an axial bearing section and a radial bearing section. Furthermore, radial sealing sections ( | 02-07-2013 |
20130208869 | HYDRODYNAMIC TUMBLE DISC BEARING SYSTEM - The invention relates to a tumble disc bearing ( | 08-15-2013 |
20160086760 | Friction Welding Of X-Ray Tube Components Using Intermediate Filler Materials - A structure and associated process for joining dissimilar materials to form various components of an x-ray tube is illustrated that utilizes one or more intermediate or interfacial filler material members positioned between the primary welding or mating surfaces of the base material components to be joined. The use of the interfacial or intermediate filler material preserves the multiple benefits of friction welding, as well as enabling the joining of highly dissimilar material components, decreasing the required joining temperature, and providing increased microstructural control of the resulting well or joint. | 03-24-2016 |
20160133431 | Welded Spiral Groove Bearing Assembly - A structure and associated method for forming a liquid metal or spiral groove bearing assembly for an x-ray tube is illustrated that utilizes a unitary sleeve and a thrust ring or seal each formed of a weldable, non-refractory material. The sleeve and the thrust seal are welded to one another to provide an improved construction for minimizing leaks of the liquid metal bearing fluid. The structure of the sleeve and the thrust seal are formed with deformation restricting features that maintain the integrity of the bearing surfaces of the assembly when the thrust seal is secured within the sleeve and welded thereto to form the bearing assembly. | 05-12-2016 |
20180025883 | X-RAY EMITTER | 01-25-2018 |
378133000 | With lubrication | 13 |
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 |
20090080616 | ROTARY ANODE X-RAY TUBE - In a rotary anode X-ray tube, a disc portion is fitted into a rotary anode with a first gap therebetween and a fixed shaft is fitted into a rotary shaft to support the anode with a second gap therebetween. The disc portion and the fixed shaft are formed integral with each other to have a hollow portion therein. A cooling liquid is allowed to flow through the hollow portion. A liquid metal is filled in the first and second gaps. Dynamic pressure type bearings is formed in the second gap. A passage is formed to directly communicate the first gap to the second gap, whereby the liquid metal being directly supplied from the second gap to the first gap. Thus, the liquid metal can be fed rapidly and surely into the gap between the anode target and a cooling vessel. | 03-26-2009 |
20090245469 | ROTARY ANODE X-RAY TUBE - In an X-ray tube, a rotary anode formed into a hollow disk-like shape is fixedly supported by a rotating body formed into a hollow cylindrical shape. A fixed shaft has fixed ends, columnar bearing portions and a disk part, and a flow path of a cooling medium formed along a central axis thereof. The bearing portions are inserted into the rotating body with a first gap between the columnar bearing portion and the rotating body, so that the rotating body is rotatably supported. The disk part is arranged in the rotary anode with a second gap between the disk part and the rotary anode. The first and second gaps are filled with a lubricant, bearing grooves are formed in the bearing portion, thereby forming dynamic pressure bearings, and a center of gravity of the rotary anode is arranged between the first and second dynamic pressure bearings. | 10-01-2009 |
20100128848 | X-RAY TUBE HAVING LIQUID LUBRICATED BEARINGS AND LIQUID COOLED TARGET - An x-ray tube having a liquid lubricated bearing assembly and a liquid cooled anode target. The anode target and bearing assembly having increased lubrication and cooling to withstand higher power, higher temperature and higher load applications. | 05-27-2010 |
20100166149 | MECHANISM AND X-RAY TUBE APPARATUS - A mechanism to which a liquid-repellent structure hard to be exfoliated is applied. | 07-01-2010 |
20100246773 | INTERFACE FOR LIQUID METAL BEARING AND METHOD OF MAKING SAME - An x-ray tube includes a cathode and a target assembly positioned to receive electrons emitted from the cathode. The target assembly includes a target and a spiral groove bearing (SGB) configured to support the target. The SGB includes a rotatable component having a first surface and a first material attached to the first surface, a stationary component having a second surface and a second material attached to the second surface, the stationary component positioned such that a gap is formed between the first material and the second material, and a liquid metal positioned in the gap. At least one of the first and second materials has a thickness greater than 0.1 mm. | 09-30-2010 |
20100246774 | INTERFACE FOR LIQUID METAL BEARING AND METHOD OF MAKING SAME - An x-ray tube includes a cathode and a target assembly positioned to receive electrons emitted from the cathode. The target assembly includes a target, and a spiral groove bearing (SGB) configured to support the target. The SGB includes a rotatable component having a first surface and a first material attached to the first surface, a stationary component having a second surface and a second material attached to the second surface, the stationary component positioned such that a gap is formed between the first material and the second material, and a liquid metal positioned in the gap, wherein at least one of the first and second materials comprises tantalum. | 09-30-2010 |
20130070902 | INTERFACE FOR LIQUID METAL BEARING AND METHOD OF MAKING SAME - An x-ray tube includes a cathode and a target assembly positioned to receive electrons emitted from the cathode. The target assembly includes a target, and a spiral groove bearing (SGB) configured to support the target. The SGB includes a rotatable component having a first surface and a first material attached to the first surface, a stationary component having a second surface and a second material attached to the second surface, the stationary component positioned such that a gap is formed between the first material and the second material, and a liquid metal positioned in the gap, wherein at least one of the first and second materials comprises tantalum. | 03-21-2013 |
20130235978 | ANTIWETTING COATING FOR LIQUID METAL BEARING AND METHOD OF MAKING SAME - An x-ray tube includes a frame enclosing a high vacuum, a cathode positioned within the enclosure, a bearing assembly a stationary component comprised of a first base substrate, the first base substrate having a first surface, a rotatable component comprised of a second base substrate, the second base substrate having a second surface, wherein the rotatable component is positioned proximate the stationary component such that a gap is formed between the first surface and the second surface, a liquid metal positioned within the gap, and an antiwetting coating attached to at least one of the first surface and the second surface, the coating includes titanium nitride attached to the at least one of the first surface and the second surface, and an oxide of titanium attached to the titanium nitride. | 09-12-2013 |
20140355743 | LIQUID BEARING ASSEMBLY AND METHOD OF CONSTRUCTING SAME - A bearing assembly is disclosed that includes a sleeve having an opening formed therein and a shaft positioned within the opening of the sleeve such that a gap is formed between an inner surface of the sleeve and an outer surface of the shaft. A lubricant is disposed in the gap and a plurality of grooves are formed on at least one of the outer surface of the shaft and the inner surface of the sleeve. An anti-wetting coating is disposed on the at least one of the outer surface of the shaft and the inner surface of the sleeve between adjacent grooves of the plurality of grooves. | 12-04-2014 |
20140369475 | ENHANCED BARRIER FOR LIQUID METAL BEARINGS - The present disclosure is directed towards the prevention of high voltage instabilities within X-ray tubes. For example, in one embodiment, an X-ray tube is provided. The X-ray tube generally includes a stationary member, and a rotary member configured to rotate with respect to the stationary member during operation of the X-ray tube. The X-ray tube also includes a liquid metal bearing material disposed in a space between the shaft and the sleeve, a seal disposed adjacent to the space to seal the liquid metal bearing material in the space, and an enhanced surface area material disposed on a side of the seal axially opposite the space and configured to trap within the enhanced surface area material liquid metal bearing material that escapes the seal. | 12-18-2014 |
20150049861 | Liquid Metal Bearing - A liquid metal bearing includes at least one first bearing part and at least one second bearing part that have a non-positive fit connection to one another. At least one first ductile sealing layer is disposed at least partly between at least a first bearing part of the at least one bearing and a second bearing part of the at least one second bearing part. | 02-19-2015 |
20160047415 | METHOD AND SYSTEMS FOR TEXTURING LIQUID BEARING SURFACES IN X-RAY TUBES - Various methods and systems are provided for providing coatings and textures to surfaces of a bearing assembly in an x-ray system to control the wettability of the surfaces when components of the bearing assembly rotate during operation of the x-ray system. A lubricant is disposed in a gap formed between a shaft and a sleeve of the bearing assembly such that textured and coated surfaces of the shaft and sleeve alter wetting properties between the lubricant and surfaces. The coatings and textures can be wetting or anti-wetting to further enhance control over the behavior of the lubricant. | 02-18-2016 |