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| Number | Title | Issue Date |
| 7974384 | X-ray tube having a ferrofluid seal and method of assembling same An x-ray tube includes a vacuum enclosure, a shaft having a first end and a second end, a flange attached to the first end of the shaft, the flange having an outer perimeter, and a ferrofluid seal assembly having an inner bore, the inner bore having an outer perimet... | 07/05/2011 |
| 7801278 | 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 ... | 09/21/2010 |
| 7746982 | 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 wit... | 06/29/2010 |
| 7397897 | Composite coating for improved wear resistance for x-ray tube bearings A bearing assembly mounted in an x-ray tube includes a bearing race and a bearing ball positioned adjacent to the bearing race. A coating is deposited on one of the bearing race and the bearing ball includes a lubricant and a hard material having a hardness greater ... | 07/08/2008 |
| 7386094 | Radiation emission device having a bearing and method of manufacture A valve is provided to fill a chamber for holding a rotation shaft of a rotating anode in an X-ray tube. The valve has a needle supported on a seat. The needle maintains the vacuum in the tube. A sleeve can engage in the valve. The sleeve is hollow and has a cavity.... | 06/10/2008 |
| 7245700 | System and method for providing sealing arrangement in X-ray tube A system and method for providing a sealing arrangement in an X-ray tube are provided. The X-ray tube includes a rotating portion having a plurality of ball bearings and a liquid metal within a housing having the ball bearings therein. The rotating portion is config... | 07/17/2007 |
| 7189437 | Mobile plating system and method An exemplary method for using a mobile plating system is provided that includes locating the mobile plating system at a desired location for plating, positioning an external vacuum pump from an interior position of a mobile storage volume of the mobile plasma platin... | 03/13/2007 |
| 7187757 | Cooled radiation emission device A cooled radiation emission device has an enclosure in which X-rays are produced. In the enclosure, there is a cathode, an anode situated facing the cathode and rotating on a shaft, and a fixed anode shaft support. The support includes a holding chamber, the shaft o... | 03/06/2007 |
| 7174267 | Computer-assisted method for calculating the temperature of a solid body In a method for the calculation of a temperature T of a solid body of a liquid cooling medium, or the time t needed for a temperature change of the solid body or the liquid cooling medium, the differential equation dT/dt=b−cT is converted into a dimensionless diff... | 02/06/2007 |
| 7127035 | Rotary anode type X-ray tube An anode target is roratably supported by a rotating mechanism having a rotary body and a staionary body. A fitted portion between the rotary body and the stationary body is formed of bearing areas having dynamic pressure type sliding bearings and a non-bearing area... | 10/24/2006 |
| 7113568 | Liquid cooled bearing housing with greased lubricated rotating anode bearings for an x-ray tube A rotating anode bearing housing includes an x-ray tube frame (106) that has a vacuum chamber (108). An anode (110) resides within the vacuum chamber (108) and rotates on a shaft (114) via a bearing (117). The bearing (11... | 09/26/2006 |
| 7106829 | X-ray tube, x-ray generator, and inspection system An x-ray emitting window is formed at a front end face, and a taper surface tilted with respect to the x-ray emitting direction is formed near the emitting window, whereby an object to be inspected can be prevented from abutting against the front end face even if th... | 09/12/2006 |
| 7046766 | Device for generating X-rays having an integrated anode and bearing member A device for generating X-rays includes source for emitting electrons; a carrier having a material that generates X-rays in response to the electrons; and dynamic groove bearing configured to rotate the carrier. The dynamic groove bearing has a portion with grooves.... | 05/16/2006 |
| 7036475 | Lash adjuster for valve gear In a lash adjuster of a valve gear which employs a serration-shaped thread mechanism, the formation of a tribochemical reactive film is suppressed by using as the materials for its adjuster screw and nut member (or the materials for their thread surfaces) materials ... | 05/02/2006 |
| 7004635 | Lubricated ball bearings A lubricated ball bearing for use in ball bearing sets is disclosed. The lubricated ball bearing features a lubricating coating applied to its outer surface. The lubricating coating preferably comprises silver, and enables the ball bearing to be utilized in bearing ... | 02/28/2006 |
| 6940947 | Integrated bearing assembly An integrated bearing assembly is provided, comprising a bearing housing defining an axial cavity in which a shaft is disposed. The shaft is rotatably supported by at least two bearing sets. The axial cavity defines three regions, each having distinct diameters. A p... | 09/06/2005 |
| 6905582 | Configurable vacuum system and method An exemplary configurable vacuum system is provided for use in coating or plating that provides the capability and versatility to handle substrates of significantly different shapes and sizes. The configurable vacuum system includes a vacuum table assembly, a mechan... | 06/14/2005 |
| 6891928 | Liquid metal gasket in x-ray tubes Liquid metal gaskets for use in vacuum tubes are provided. Such liquid metal gaskets are ideal for use in x-ray tubes in x-ray imaging systems. These liquid metal gaskets comprise an internal plug incorporating a liquid metal filling, a first seal connected to a fir... | 05/10/2005 |
| 6751291 | Rotary anode type X-ray tube Disclosed is a rotary anode type X-ray tube comprising an anode target emitting an X-ray, a rotating mechanism for rotatably supporting the anode target, the rotating mechanism including an inside rotor and a stator, bearings being arranged between the inside rotor ... | 06/15/2004 |
| 6693990 | Low thermal resistance bearing assembly for x-ray device A bearing assembly for a rotating anode x-ray device. The bearing assembly includes a shaft having a flange at one end for attachment of the anode thereto. The shaft defines front and rear inner races and includes a plurality of extended surfaces. Front a... | 02/17/2004 |
| 6636583 | Grease bearing with gallium shunt An x-ray tube 10 is provided including an anode mounted to a rotatable shaft positioned within a center bore of a stem element, a bearing assembly positioned between the rotatable shaft and the stem element, and at least one liquid metal shunt in thermal ... | 10/21/2003 |
| 6546078 | Rotary anode type X-ray tube An X-ray tube includes a substantially cylindrical rotor having an anode target fixed thereto, a substantially columnar stationary shaft coaxially arranged inside the rotor with a bearing gap, a dynamic slide bearing having helical grooves and formed betw... | 04/08/2003 |
| 6456693 | Multiple row spiral groove bearing for X-ray tube A multiple row spiral grooved bearing assembly 26 for use in a rotating anode X ray tube device 10 has an intermediate race 32 having a spiral grooved inner 34 and outer 36 surface placed between an outer housing 28 and an inner bearing shaft 30. A layer ... | 09/24/2002 |
| 6275567 | Rotary-anode X-ray tube provided with a hydrodynamic sleeve bearing The invention relates to a rotary-anode X-ray tube which includes a sleeve bearing which is composed of an inner and an outer bearing segment, the outer bearing segment including intermediate pieces and a holder on which the intermediate pieces bear so as... | 08/14/2001 |
| 6269146 | Rotating anode x-ray tube capable of efficiently discharging intense heat There is provided a rotating anode X-ray tube capable of efficiently discharging intense heat generated when X-rays are generated and achieving a high output power, a long-time continuous operation and a long operating life of the bearings. A rotating ano... | 07/31/2001 |
| 6125168 | X-ray tube rotor and stator assembly An X-ray tube assembly having bearings rotatably connecting a rotor shaft and a stator. A pair of circumferential protrusions each radially extend from the shaft and are spaced apart a first radial distance from the stator. In a first example, the protrus... | 09/26/2000 |
| 5875227 | X-ray tube rotor and stator assembly An X-ray tube assembly having bearings rotatably connecting a rotor shaft and a stator. A pair of circumferential protrusions each radially extend from the shaft and are spaced apart a first radial distance from the stator. A substance, which includes met... | 02/23/1999 |
| 5838763 | X-ray tube with a plain bearing An X-ray tube has a rotating anode and a plain bearing for mounting the rotating anode in a vacuum housing. The plain bearing has an inner bearing part that is stationary in relation to the vacuum housing, and a rotating outer bearing part that is connect... | 11/17/1998 |
| 5701336 | Rotary-anode x-ray tube The invention relates to a rotary-anode X-ray tube comprising a plain bearing, notably a spiral groove bearing, which comprises a bearing shaft and a bearing shell which encloses the bearing shaft, contains essentially molybdenum and/or tungsten or alloys... | 12/23/1997 |
| 5668849 | Method of manufacturing a rotating anode X-ray tube In a rotating anode X-ray tube of this invention, a liquid metal lubricant supplied to bearing portions between a rotary member and a stationary member for instructing rotation of the rotary member is to be filled to a volume having a range of lower limit... | 09/16/1997 |
| 5654999 | Liquid metal plain bearing A liquid metal plain bearing has a rotating and a stationary bearing part between which a bearing gap filled with liquid metal is located. The rotating bearing part has in relation at least one ring groove arranged to the bearing gap so that liquid metal ... | 08/05/1997 |
| 5624191 | Metal lubricated plain bearing having a bearing part adjoining a bearing surface wetted with liquid metal during operation The invention is directed to a plain bearing part for a liquid metal lubricated plain bearing, the plain bearing part having a bearing surface that is in contact with a liquid metal during operation. This bearing surface is provided with a layer of a meta... | 04/29/1997 |
| 5622435 | Plain bearing having a bearing gap filled with liquid metal A plain bearing having a bearing gap filled with liquid metal has two plain bearing parts each having a surface contiguous to the liquid metal, these surfaces delimiting a gap connecting the bearing gap with the surrounding space. At least one of the surf... | 04/22/1997 |
| 5619549 | Rotary-anode X-ray tube comprising a sleeve bearing A rotary-anode X-ray tube including a sleeve bearing with a stationary and a rotatable bearing portion having facing bearing faces, at least one of which is provided with a groove pattern, has a lubricant which is liquid at least in the operating conditio... | 04/08/1997 |
| 5602898 | Rotary-anode X-ray tube comprising a sleeve bearing A rotary-anode X-ray tube, include a sleeve bearing which serves to journal the rotary anode which sleeve bearing has a stationary bearing portion and a bearing portion which is rotatable about an axis of rotation. The two bearing portions cooperate with ... | 02/11/1997 |
| 5583907 | Rotary anode type x-ray tube and method of manufacturing the same A rotary anode type X-ray tube comprises a thin gas passageway extending from a lubricant chamber formed along the axis of a stationary structure and open at a fine gap G effective for preventing a lubricant leakage. In manufacturing the tube, a liquid me... | 12/10/1996 |
| 5559852 | Rotary-anode X-ray tube comprising a sleeve bearing A rotary-anode X-ray tube, having a sleeve beating with a stationary bearing portion and a rotatable bearing portion, one of the facing surfaces of which is provided with a groove pattern, in which a bearing gap formed between the two bearing portions is ... | 09/24/1996 |
| 5541975 | X-ray tube having rotary anode cooled with high thermal conductivity fluid An X-ray tube rotating anode is cooled with a liquid metal functioning as a recirculated heat exchange fluid and/or a metal film in a gap between the anode and a stationary structure. The liquid metal is confined to the gap by (a) a labyrinth having a coa... | 07/30/1996 |
| 5504797 | Rotary-anode X-ray tube comprising a sleeve bearing A rotary-anode X-ray tube includes a sleeve bearing, notably a helical groove bearing, for journalling the rotary anode. The bearing comprises a stationary and a rotatable bearing portion, a liquid lubricant being present between the two bearing portions ... | 04/02/1996 |
| 5483570 | Bearings for x-ray tubes An improved x-ray system/tube comprising an enclosure having oil contained therein, an oil pump, for circulating oil within the system, at least one cooling structure operatively connected to the enclosure and the oil pump, for cooling the oil, an x-ray t... | 01/09/1996 |
