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| Number | Title | Issue Date |
| 7903786 | Apparatus for increasing radiative heat transfer in an X-ray tube and method of making same A target assembly for generating x-rays includes a target substrate, and an emissive coating attached to the target substrate, the emissive coating including a textured material including a plurality of granular protrusions arranged to increase gray body emissive ch... | 03/08/2011 |
| 7672433 | Apparatus for increasing radiative heat transfer in an x-ray tube and method of making same A target assembly for generating x-rays includes a target substrate, and an emissive coating applied to a portion of the target substrate, the emissive coating comprising one or more of a carbide and a carbonitride. ... | 03/02/2010 |
| 7643614 | Method and apparatus for increasing heat radiation from an x-ray tube target shaft A target for generating x-rays includes a target substrate, a target shaft attached to the target substrate, and a radiation emissive coating applied to at least one of the target substrate and the target shaft, wherein a center-of-gravity of the target is positione... | 01/05/2010 |
| 7356122 | X-ray anode focal track region A focal track region of an x-ray anode in an example is electrochemically etched. In a further example, an x-ray anode comprises a thermally-compliant focal track region for impingement of electrons from an x-ray cathode to create an x-ray source. The thermally-comp... | 04/08/2008 |
| 7197119 | High-performance anode plate for a directly cooled rotary piston x-ray tube A high-performance anode plate for a directly cooled rotary piston x-ray tube is formed of a high-temperature-resistant material such as tungsten, molybdenum or a combination of both materials. In the region of the focal spot path, the underside of the anode plate i... | 03/27/2007 |
| 7150562 | High voltage cable terminal and clamp system A cable terminal and clamp system particularly suited for use in an x-ray tube environment. The cable terminal and clamp system includes a cable socket having cable and terminal ports, each of which defines an axis. The cable terminal and clamp system includes a cab... | 12/19/2006 |
| 7095821 | Non-rusting and non-particulating imaging X-ray tube rotor assembly An rotor assembly (30) for an imaging X-ray tube (32) is provided. The imaging X-ray tube rotor assembly (30) includes at least partially a magnetic non-corrosive material. A method of producing the imaging tube X-ray rotor assembly (30) ... | 08/22/2006 |
| 7079624 | X-Ray tube and method of manufacture The present invention is directed to an air-cooled radiographic apparatus, and its method of manufacture, that utilizes a single integral housing for providing an evacuated envelope for an anode and cathode assembly. The integral housing is preferably formed from a ... | 07/18/2006 |
| 7062017 | Integral cathode An integral cathode for use with x-ray devices. The integral cathode includes an emitter made of a refractory metal such as tungsten, preferably doped with rhenium to afford malleability during construction and assembly. The integral cathode also includes a support ... | 06/13/2006 |
| 6487272 | Penetrating type X-ray tube and manufacturing method thereof The object of this invention is to provide a highly reliable penetrating type X-ray tube and a manufacturing method thereof, preventing interfacial exfoliation between a transmission window and a target film before it happens. This invention is characteri... | 11/26/2002 |
| 6477233 | Miniature x-ray source An X-ray source includes a first support member and a second support member joined together so as to form a cavity between them and such that they are electrically insulated from each other. A cathode and an anode are located inside the cavity and opposit... | 11/05/2002 |
| 6477222 | Getter for atmospheric gases in optical switch working fluid An optical switch includes a core and a fluid reservoir. The core includes a base, a matrix controller substrate, and a planar lightwave circuit. The planar lightwave circuit has a plurality of waveguides and a plurality of trenches. Each trench is locate... | 11/05/2002 |
| 6456692 | High emissive coatings on x-ray tube components An x-ray tube having one or more components, such as the rotor, that include a coating of relatively high emissivity. The coating, a metal oxide composition for example, is selectively applied to desired portions of the component by plasma spray or simila... | 09/24/2002 |
| 6390875 | Method for enhancing thermal radiation transfer in X-ray tube components A method is provided for enhancing heat transfer within an X-ray vacuum tube, from a hot component such as the rotating anode assembly to a cooler component such as the metal tube housing, by increasing surface emissivity of respective components. The met... | 05/21/2002 |
| 6144720 | Iron oxide coating for x-ray tube rotors A high energy x-ray tube includes an evacuated chamber (12) containing a rotor (34) which rotates an anode (10) in the path of a stream of electrons (A) to generate an x-ray beam (B) and heat. The rotor includes an armature (36) which rotates around a sta... | 11/07/2000 |
| 5553114 | Emissive coating for X-ray tube rotors An improved high performance x-ray system having a rotating anode therein which includes an improved coating for the x-ray tube rotor. The surface of the x-ray tube rotor is coated with a ductile, metal coating, preferably iron, having a thickness of abou... | 09/03/1996 |
| 5461659 | Emissive coating for x-ray tube rotors An improved high performance x-ray system having a rotating anode therein which includes an improved coating for the x-ray tube rotor. The surface of the x-ray tube rotor is coated with a ductile coating wherein at least about 40,000 x-ray scan-seconds ar... | 10/24/1995 |
| 5264801 | Active carbon barrier for x-ray tube targets A target track (20) of an anode (14) of an x-ray tube becomes heated adjacent a focal spot (18) to temperatures on the order of 1100°-1400° C. To protect the anode, a body portion (34) is coated (46) with a thermal energy emissive oxide layer (48). In o... | 11/23/1993 |
| 5159619 | High performance metal x-ray tube target having a reactive barrier layer A high performance x-ray tube rotating target having a reactive barier layer between the substrate and the emissive coating and, if desired, a protective layer of molybdenum between the reactive barrier and the emissive coating is disclosed.... | 10/27/1992 |
| 5157706 | X-ray tube anode with oxide coating An X-ray anode, in particular a rotary anode, having a parent body made of a carbon-containing refractory material. To improve the thermal radiation characteristics of the anode, the anode is provided with an oxidic top layer outside the focal spot or the... | 10/20/1992 |
| 5157705 | X-ray tube anode with oxide coating The invention relates to enhancing the thermal emissivity of metal X-ray tube anodes by means of applying an oxide coating to the anode. The oxide coating layer is formed of a mixture of zirconium oxide, titanium oxide, aluminum oxide and/or calcium oxide... | 10/20/1992 |
| 5150397 | Thermal emissive coating for x-ray targets A high thermal emittance coating for an x-ray tube anode target which permits broad application parameters and a stable and smooth coating. The coating is composed of ZrO2 present in an amount of 8% to 20% by weight and Al2 O3 | 09/22/1992 |
| 5056127 | Enhanced heat transfer rotating anode x-ray tubes Means for enhancing heat transfer from liquid cooled rotating anode x-ray tubes that provide for extended surfaces on the liquid cooled concave curved heat exchange surfaces opposing the electron beam focal track. The extended surfaces take the form of fi... | 10/08/1991 |
| 4975621 | Coated article with improved thermal emissivity A coated article suitable for use in a vacuum consisting essentially of a refractory metal substrate and a first coating of TiB2 and Mo. An overcoat of TiB2 may be applied to the first coating as a second layer upon which additional ... | 12/04/1990 |
| 4953190 | Thermal emissive coating for x-ray targets A high thermal emittance coating for an x-ray tube anode target which permits broader application parameters and a stable coating. The coating is composed of Al2 O3 present in an amount of 50% to 80% by weight and ZrO2 or ... | 08/28/1990 |
| 4901338 | Rotary anode for X-ray tubes and method of manufacture Rotary graphite anode for use in X-ray tubes comprising a basic body consisting of graphite and a high melting alloy and having a tungsten alloy focal track. The basic body is secured to a graphite substrate. The graphite substrate is coated by a layer of... | 02/13/1990 |
| 4870672 | Thermal emittance coating for x-ray tube target A fused metal oxide ceramic coating is disclosed for application in a particular region of the target employed in an x-ray tube. The disclosed ceramic coating enhances the thermal emittance of a refractory metal target and comprises the fused product of a... | 09/26/1989 |
| 4731805 | Rotary anode for an x-ray tube and an x-ray tube having such anode A rotary anode for an X-ray tube is in the form of a disc (1) the surface of which has, at least partially, a blackening coating (2). The latter is in the form of a sintered porous composition of titanium grains, mainly of the dendritic structure, of a si... | 03/15/1988 |
| 4520496 | Rotary-anode X-ray tube The invention relates to an anode disc for a rotary-anode X-ray tube which consists of a rotationally-symmetrical body of molybdenum and a corresponding body of graphite. The connection zone between the two bodies is smaller than the inner diameter of the... | 05/28/1985 |
| 4335327 | X-Ray tube target having pyrolytic amorphous carbon coating An X-ray tube including a tubular envelope having therein an anode target provided with a surface portion made of X-ray emissive material and with another surface portion coated with amorphous carbon material, and an electron emitting cathode disposed to ... | 06/15/1982 |
| 4327305 | Rotatable X-ray target having off-focal track coating An X-ray tube including a tubular envelope having therein an anode target provided with a surface portion made of X-ray emissive material and with another surface portion made of heat emissive material comprising at least one of the members from the group... | 04/27/1982 |
| 4320323 | Method of improving the heat radiation properties of an X-ray tube rotary anode and a rotary anode thus obtained In an X-ray tube rotary anode having a supporting body (1) of molybdenum alloy, a target (2) of tungsten alloy, and a rough tungsten layer, applied by flame spraying to the whole surface of the anode except the focal path (4), for improving heat radiation... | 03/16/1982 |
| 4187442 | Rotating anode X-ray tube with improved thermal capacity A low thermally conductive columbium metal stem has a heavy refractory metal x-ray target disk fastened to one end. A high thermal conductivity rotor hub comprising a cup-shaped element is fastened to the other end of the stem and the rotor hub is fastene... | 02/05/1980 |
| 4144471 | Rotating anode X-ray tube The invention relates to a rotating-anode X-ray tube with increased continuous loadability. The anode comprises a plurality of concentrically disposed hollow cylindrical bodies, which are connected to each other at their end faces in such a way that a mea... | 03/13/1979 |
| 4132916 | High thermal emittance coating for X-ray targets A high thermal emittance coating for an X-ray tube anode target comprises a high melting point oxide or a mixture of such oxides added to titanium dioxide and another oxide selected from the group consisting of calcium oxide and yttrium oxide.... | 01/02/1979 |
| 4119879 | Graphite disc assembly for a rotating x-ray anode tube A graphite disc assembly for a rotating x-ray tube embodying a graphite substrate and an anode target of either tungsten or tungsten rhenium joined thereto by a layer of rhodium, osmium, ruthenium, platinum, platinum-chromium, or palladium.... | 10/10/1978 |
| 4097759 | X-ray tube An X-ray tube includes a rotor body having an outer sleeve of copper and an inner sleeve of steel, the two sleeves being joined by brazing. A black coating is applied to the outer surface of the copper sleeve and the inner surface of the steel sleeve, as ... | 06/27/1978 |
| 4090103 | X-ray target An X-ray target, preferably a rotating target is disclosed in which at least part of the target surface outside the focal area contains a coating layer of a mixture composed of molybdenum, tungsten, niobium or tantalum, and from 20-60 volume percent of a ... | 05/16/1978 |
| 4037127 | X-ray tube An X-ray tube comprises an anode including a target giving off X-rays when electrons emitted from the filament of the cathode impinge upon the target and being heated at this time, and a supporting structure for supporting the target and being subject to ... | 07/19/1977 |
| 3993923 | Coating for X-ray tube rotary anode surface remote from the electron target area A rotary anode for an X-ray tube in which the surface remote from the electron target area is covered with a metal oxide coating comprising at least 94 percent by weight Al2 O3 and at least 2 percent by weight TiO2.... | 11/23/1976 |
