Patents by Inventor Koichi Kitade
Koichi Kitade has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 7391852Abstract: An X-ray apparatus includes a rotation-anode type X-ray tube which is configured such that a rotatable anode target and a cathode that is disposed to be opposed to the anode target are accommodated within a vacuum envelope, a stator which generates an induction electromagnetic field for rotating the anode target, a housing which accommodates and holds at least the rotation-anode type X-ray tube, a circulation path which is provided near at least a part of the rotation-anode type X-ray tube, and through which a water-based coolant is circulated, and a cooling unit including a circulation pump, which is provided at a position along the circulation path and forcibly feeds the water-based coolant, and a radiator which radiates heat of the water-based coolant, wherein at least a part of a surface of a metallic component is coated with a coating member to prevent contacting with the water-based coolant.Type: GrantFiled: April 11, 2006Date of Patent: June 24, 2008Assignees: Kabushiki Kaisha Toshiba, Toshiba Electron Tubes & DevicesInventors: Hidero Anno, Koichi Kitade, Takayuki Kitami, Hironori Nakamuta, Manabu Sato
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Patent number: 7324629Abstract: In a rotary anode type X-ray tube, a rotary anode and a rotary structure supporting the anode are arranged within the vacuum envelope. A stationary shaft has a middle section which is fitted into a cylindrical portion of the rotary structure, and a dynamic pressure type radial bearing is arranged between the cylindrical portion and the middle section. The stationary shaft also has a first section between one end of the middle section and one end of the stationary shaft, and a second section between the other end of the middle section and the other end of the stationary shaft, which are fixed to the vacuum envelope. A transverse stiffness of the second section is set to be larger than a transverse stiffness of the first section, and a center of gravity is positioned in the middle section.Type: GrantFiled: November 28, 2006Date of Patent: January 29, 2008Assignee: Kabushiki Kaisha ToshibaInventors: Harunobu Fukushima, Yasuo Yoshii, Hitoshi Hattori, Koichi Kitade, Mitsuo Iwase, Hironori Nakamuta
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Patent number: 7215740Abstract: In a rotary anode type X-ray tube, a rotary anode and a rotary structure supporting the anode are arranged within the vacuum envelope. A stationary shaft has a middle section which is fitted into a cylindrical portion of the rotary structure, and a dynamic pressure type radial bearing is arranged between the cylindrical portion and the middle section. The stationary shaft also has a first section between one end of the middle section and one end of the stationary shaft, and a second section between the other end of the middle section and the other end of the stationary shaft, which are fixed to the vacuum envelope. A transverse stiffness of the second section is set to be larger than a transverse stiffness of the first section, and a center of gravity is positioned in the middle section.Type: GrantFiled: August 27, 2004Date of Patent: May 8, 2007Assignee: Kabushiki Kaisha ToshibaInventors: Harunobu Fukushima, Yasuo Yoshii, Hitoshi Hattori, Koichi Kitade, Mitsuo Iwase, Hironori Nakamuta
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Publication number: 20070092063Abstract: In a rotary anode type X-ray tube, a rotary anode and a rotary structure supporting the anode are arranged within the vacuum envelope. A stationary shaft has a middle section which is fitted into a cylindrical portion of the rotary structure, and a dynamic pressure type radial bearing is arranged between the cylindrical portion and the middle section. The stationary shaft also has a first section between one end of the middle section and one end of the stationary shaft, and a second section between the other end of the middle section and the other end of the stationary shaft, which are fixed to the vacuum envelope. A transverse stiffness of the second section is set to be larger than a transverse stiffness of the first section, and a center of gravity is positioned in the middle section.Type: ApplicationFiled: November 28, 2006Publication date: April 26, 2007Inventors: Harunobu Fukushima, Yasuo Yoshii, Hitoshi Hattori, Koichi Kitade, Mitsuo Iwase, Hironori Nakamuta
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Patent number: 7206380Abstract: An X-ray apparatus includes a rotation-anode type X-ray tube which is configured such that a rotatable anode target and a cathode that is disposed to be opposed to the anode target are accommodated within a vacuum envelope, a stator which generates an induction electromagnetic field for rotating the anode target, a housing which accommodates and holds at least the rotation-anode type X-ray tube, a circulation path which is provided near at least a part of the rotation-anode type X-ray tube, and through which a water-based coolant is circulated, and a cooling unit including a circulation pump, which is provided at a position along the circulation path and forcibly feeds the water-based coolant, and a radiator which radiates heat of the water-based coolant, wherein an amount of dissolved oxygen at 25° C. in the water-based coolant is 5 mg/liter or less.Type: GrantFiled: April 11, 2006Date of Patent: April 17, 2007Assignees: Kabushiki Kaisha Toshiba, Toshiba Electron Tubes & Devices, Co., Ltd.Inventors: Hidero Anno, Koichi Kitade, Takayuki Kitami, Hironori Nakamuta, Manabu Sato
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Patent number: 7203280Abstract: The present invention relates to an X-ray apparatus comprising an electron radiation source which generates an electron to an anode, a shaft which rotatably supports the anode, a stator which generates a force to rotate a rotor shaft, an enclosure which maintains at least the anode, electron radiation source and rotor shaft in vacuum, and a housing which contains a cooling medium around the enclosure. The X-ray apparatus is characterized in that an electric wire material to supply power to the electron radiation source and stator, or a connector used for connection with the electric wire material is molded by a material having an electrical insulating property.Type: GrantFiled: April 17, 2006Date of Patent: April 10, 2007Assignees: Kabushiki Kaisha Toshiba, Toshiba Electron Tubes & Devices Co, Ltd.Inventors: Hidero Anno, Koichi Kitade, Takayuki Kitami, Hironori Nakamuta, Manabu Sato
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Patent number: 7197118Abstract: The present invention is characterized by supporting a stator to generate a magnetic field and an anode target by a dynamic pressure plain bearing using a liquid metal, and cooling at least the inside of the dynamic pressure plain bearing and an enclosure containing an anode target by circulating one kind of cooling medium, in a rotary X-ray tube apparatus which obtains X-rays by impinging an electron on an anode by rotating an anode target.Type: GrantFiled: April 17, 2006Date of Patent: March 27, 2007Assignees: Kabushiki Kaisha Toshiba, Toshiba Electron Tubes & DevicesInventors: Hidero Anno, Koichi Kitade, Takayuki Kitami, Hironori Nakamuta, Manabu Sato
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Publication number: 20060193439Abstract: The present invention is characterized by supporting a stator to generate a magnetic field and an anode target by a dynamic pressure plain bearing using a liquid metal, and cooling at least the inside of the dynamic pressure plain bearing and an enclosure containing an anode target by circulating one kind of cooling medium, in a rotary X-ray tube apparatus which obtains X-rays by impinging an electron on an anode by rotating an anode target.Type: ApplicationFiled: April 17, 2006Publication date: August 31, 2006Applicants: KABUSHIKI KAISHA TOSHIBA, Toshiba Electron Tubes & Devices Co., Ltd.Inventors: Hidero Anno, Koichi Kitade, Takayuki Kitami, Hironori Nakamuta, Manabu Sato
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Publication number: 20060188068Abstract: An X-ray apparatus includes a rotation-anode type X-ray tube which is configured such that a rotatable anode target and a cathode that is disposed to be opposed to the anode target are accommodated within a vacuum envelope, a stator which generates an induction electromagnetic field for rotating the anode target, a housing which accommodates and holds at least the rotation-anode type X-ray tube, a circulation path which is provided near at least a part of the rotation-anode type X-ray tube, and through which a water-based coolant is circulated, and a cooling unit including a circulation pump, which is provided at a position along the circulation path and forcibly feeds the water-based coolant, and a radiator which radiates heat of the water-based coolant, wherein an amount of dissolved oxygen at 25° C. in the water-based coolant is 5 mg/liter or less.Type: ApplicationFiled: April 11, 2006Publication date: August 24, 2006Applicants: KABUSHIKI KAISHA TOSHIBA, Toshiba Electron Tubes & Devices Co., Ltd.Inventors: Hidero Anno, Koichi Kitade, Takayuki Kitami, Hironori Nakamuta, Manabu Sato
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Publication number: 20060188069Abstract: The present invention relates to an X-ray apparatus comprising an electron radiation source which generates an electron to an anode, a shaft which rotatably supports the anode, a stator which generates a force to rotate a rotor shaft, an enclosure which maintains at least the anode, electron radiation source and rotor shaft in vacuum, and a housing which contains a cooling medium around the enclosure. The X-ray apparatus is characterized in that an electric wire material to supply power to the electron radiation source and stator, or a connector used for connection with the electric wire material is molded by a material having an electrical insulating property.Type: ApplicationFiled: April 17, 2006Publication date: August 24, 2006Applicants: KABUSHIKI KAISHA TOSHIBA, Toshiba Electron Tubes & Devices Co., Ltd.Inventors: Hidero Anno, Koichi Kitade, Takayuki Kitami, Hironori Nakamuta, Manabu Sato
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Publication number: 20060182222Abstract: An X-ray apparatus includes a rotation-anode type X-ray tube which is configured such that a rotatable anode target and a cathode that is disposed to be opposed to the anode target are accommodated within a vacuum envelope, a stator which generates an induction electromagnetic field for rotating the anode target, a housing which accommodates and holds at least the rotation-anode type X-ray tube, a circulation path which is provided near at least a part of the rotation-anode type X-ray tube, and through which a water-based coolant is circulated, and a cooling unit including a circulation pump, which is provided at a position along the circulation path and forcibly feeds the water-based coolant, and a radiator which radiates heat of the water-based coolant, wherein at least a part of a surface of a metallic component is coated with a coating member to prevent contacting with the water-based coolant.Type: ApplicationFiled: April 11, 2006Publication date: August 17, 2006Applicants: KABUSHIKI KAISHA TOSHIBA, TOSHIBA ELECTRON TUBES & DEVICES CO., LTD.Inventors: Hidero Anno, Koichi Kitade, Takayuki Kitami, Hironori Nakamuta, Manabu Sato
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Patent number: 6938284Abstract: A washstand unit 10, a waste storage compartment 11, a mirror 12, an upper cabinet 13 and a lighting equipment 14 are disposed on a side panel 5. Fitting concave portions 15 and 16 are formed on the washstand unit 10 for receiving portions of the waste storage compartment 11 and lighting equipment 14. Fitting portions 19, 20 and 21, 22 are formed on the mirror 12 for receiving portions of the upper cabinet 13 and lighting equipment 14. The washstand unit 10, the waste storage compartment 11, the mirror 12, the upper cabinet 13 and the lighting equipment 14 are mounted independently on the side panel 5 without assembling.Type: GrantFiled: December 4, 2003Date of Patent: September 6, 2005Assignee: Jamco CorporationInventors: Koichi Kitade, Ryoichi Itakura, Toshihisa Kasuya
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Publication number: 20050089144Abstract: In a rotary anode type X-ray tube, a rotary anode and a rotary structure supporting the anode are arranged within the vacuum envelope. A stationary shaft has a middle section which is fitted into a cylindrical portion of the rotary structure, and a dynamic pressure type radial bearing is arranged between the cylindrical portion and the middle section. The stationary shaft also has a first section between one end of the middle section and one end of the stationary shaft, and a second section between the other end of the middle section and the other end of the stationary shaft, which are fixed to the vacuum envelope. A transverse stiffness of the second section is set to be larger than a transverse stiffness of the first section, and a center of gravity is positioned in the middle section.Type: ApplicationFiled: August 27, 2004Publication date: April 28, 2005Inventors: Harunobu Fukushima, Yasuo Yoshii, Hitoshi Hattori, Koichi Kitade, Mitsuo Iwase, Hironori Nakamuta
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Publication number: 20040123381Abstract: A washstand unit 10, a waste storage compartment 11, a mirror 12, an upper cabinet 13 and a lighting equipment 14 are disposed on a side panel 5. Fitting concave portions 15 and 16 are formed on the washstand unit 10 for receiving portions of the waste storage compartment 11 and lighting equipment 14. Fitting portions 19, 20 and 21, 22 are formed on the mirror 12 for receiving portions of the upper cabinet 13 and lighting equipment 14. The washstand unit 10, the waste storage compartment 11, the mirror 12, the upper cabinet 13 and the lighting equipment 14 are mounted independently on the side panel 5 without assembling.Type: ApplicationFiled: December 4, 2003Publication date: July 1, 2004Applicant: JAMCO CORPORATIONInventors: Koichi Kitade, Ryoichi Itakura, Toshihisa Kasuya
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Patent number: 5809106Abstract: In an X-ray tube with a hydrodynamic slide bearing, an electron beam is caused to strike the focal point track area F on its rotary anode, which then emits X rays. An X-ray emission control device that sets the conditions for emitting the X rays stores as data the rises and drops in the temperature at the electron beam incident point and the other part on the focal point track surface of the anode. On the basis of the data, the input permission or inhibition conditions for the X-ray tube at every moment are calculated and the resulting conditions are displayed on a display unit. As a result, it is possible to perform a computing process in advance to determine whether or not X rays can be emitted under specific conditions without a permitting the rotary anode in the X-ray tube with a hydrodynamic slide bearing to melt and then display the results, thereby enabling a safe, efficient photographing control.Type: GrantFiled: February 28, 1997Date of Patent: September 15, 1998Assignee: Kabushiki Kaisha ToshibaInventors: Koichi Kitade, Katsuhiro Ono
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Patent number: 5696804Abstract: In an X-ray tomographic apparatus, while rotating a gantry rotary section around a region where an object to be photographed is placed, the anode target of an X-ray tube is rotated at a predetermined high rotation rate and X-rays are emitted from the anode target. In emitting the X-rays, the rotation torque is increased to be larger than that prior to rotation of the gantry rotary section in accordance with the rotation drive power supplied to a stator coil. A decrease in rotation rate of the anode target of the X-ray tube can be prevented even during rotation of the gantry rotary section, radiation at a necessary and sufficient X-ray dose can be assured, and an X-ray tomographic image can be properly obtained.Type: GrantFiled: January 30, 1997Date of Patent: December 9, 1997Assignee: Kabushiki Kaisha ToshibaInventors: Katsuhiro Ono, Koichi Kitade, Hidero Anno, Takayuki Kitami