Patents by Inventor Tetsuya Yonezawa
Tetsuya Yonezawa 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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Publication number: 20240067906Abstract: One of the objects of the present invention is to enhance a fruit sensation which tends to be insufficient in sugar-free, fruit juice-containing alcoholic beverages containing no high intensity sweetener. In this invention, a specified amount of a polysaccharide or polysaccharides with a degree of polymerization of not less than 3 is used in the fruit juice-containing alcoholic beverage, and the acidity in terms of citric acid is adjusted to be within a specified range.Type: ApplicationFiled: January 20, 2022Publication date: February 29, 2024Applicant: SUNTORY HOLDINGS LIMITEDInventors: Shunya Fujita, Tetsuya Omoto, Chie Yonezawa, Hiroshi Seiki
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Patent number: 10814416Abstract: In a power steering device equipped with a rack shaft constructed by joining a first member having rack teeth and a second member serving as a ball screw shaft on which a ball screw groove is formed, a grinding process of the ball screw groove is performed on the second member by causing a grindstone to rotate and move along a rotation axis of the second member, while causing the second member to rotate about an axis of the second member as the rotation axis. The grinding process is performed so as to satisfy a specified machining condition “g/(5×p)<w<g/p”, where w is a rotational speed of the second member during grinding of the ball screw groove, g is a rotational speed of the grindstone during grinding of the ball screw groove, and p is a circumferential length of one circumference of the ball screw groove around the rotation axis.Type: GrantFiled: September 26, 2016Date of Patent: October 27, 2020Assignee: HITACHI AUTOMOTIVE SYSTEMS, LTD.Inventors: Atsushi Sato, Keisuke Kitamura, Mitsuaki Abe, Tetsuya Yonezawa, Tatsuyoshi Maruyama, Osamu Yoshida, Kenji Kagami
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Patent number: 10734185Abstract: In one embodiment, a rotating anode type X-ray tube comprises a fixed shaft having a first surface, a rotor, a cathode emitting electrons, and an anode target. The rotor comprises a first cylinder having a second surface, a second cylinder, and a third cylinder. A first threaded portion on an inner surface of the first cylinder and a second threaded portion on an outer peripheral surface of the third cylinder are tightened. A screw member is screwed in a third threaded portion on an inner peripheral surface of a hole which penetrates the third cylinder, and a tip portion of the screw member presses the second cylinder against the second surface.Type: GrantFiled: July 13, 2017Date of Patent: August 4, 2020Assignee: Canon Electron Tubes & Devices Co., Ltd.Inventor: Tetsuya Yonezawa
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Patent number: 10614996Abstract: According to one embodiment, an X-ray system includes an X-ray tube including a filament in which a filament current according to a tube current flows, a filament current monitoring unit monitoring the filament current, a tube current monitoring unit monitoring the tube current, and an inspection unit determining whether the tube current falls within a predetermined set range in X-ray emission.Type: GrantFiled: April 30, 2018Date of Patent: April 7, 2020Assignee: Canon Electron Tubes & Devices Co., Ltd.Inventor: Tetsuya Yonezawa
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Publication number: 20180315579Abstract: According to one embodiment, an X-ray system includes an X-ray tube including a filament in which a filament current according to a tube current flows, a filament current monitoring unit monitoring the filament current, a tube current monitoring unit monitoring the tube current, and an inspection unit determining whether the tube current falls within a predetermined set range in X-ray emission.Type: ApplicationFiled: April 30, 2018Publication date: November 1, 2018Applicant: Toshiba Electron Tubes & Devices Co., Ltd.Inventor: Tetsuya Yonezawa
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Publication number: 20180272448Abstract: In a power steering device equipped with a rack shaft constructed by joining a first member having rack teeth and a second member serving as a ball screw shaft on which a ball screw groove is formed, a grinding process of the ball screw groove is performed on the second member by causing a grindstone to rotate and move along a rotation axis of the second member, while causing the second member to rotate about an axis of the second member as the rotation axis. The grinding process is performed so as to satisfy a specified machining condition “g/(5×p)<w<g/p”, where w is a rotational speed of the second member during grinding of the ball screw groove, g is a rotational speed of the grindstone during grinding of the ball screw groove, and p is a circumferential length of one circumference of the ball screw groove around the rotation axis.Type: ApplicationFiled: September 26, 2016Publication date: September 27, 2018Applicant: HITACHI AUTOMOTIVE SYSTEMS, LTD.Inventors: Atsushi SATO, Keisuke KITAMURA, Mitsuaki ABE, Tetsuya YONEZAWA, Tatsuyoshi MARUYAMA, Osamu YOSHIDA, Kenji KAGAMI
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Publication number: 20170309435Abstract: In one embodiment, a rotating anode type X-ray tube comprises a fixed shaft having a first surface, a rotor, a cathode emitting electrons, and an anode target. The rotor comprises a first cylinder having a second surface, a second cylinder, and a third cylinder. A first threaded portion on an inner surface of the first cylinder and a second threaded portion on an outer peripheral surface of the third cylinder are tightened. A screw member is screwed in a third threaded portion on an inner peripheral surface of a hole which penetrates the third cylinder, and a tip portion of the screw member presses the second cylinder against the second surface.Type: ApplicationFiled: July 13, 2017Publication date: October 26, 2017Applicant: Toshiba Electron Tubes & Devices Co., Ltd.Inventor: Tetsuya YONEZAWA
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Publication number: 20170084420Abstract: In a rotary-anode type X-ray tube, an annular groove is annularly formed on a first surface of a rotary-anode. The annular groove is so extended as to be surrounded by an anode target and is arranged around a rotation axis of the rotary-anode is in rotation symmetry with respect to an axis of rotation. Slits are so formed in the rotary-anode as to be arranged around the rotation axis in rotation symmetry with respect to the rotation axis, each of the slits is cut in the rotary-anode and extended in the in communication with the annular groove, and through holes are communicated with the respective slits, and each of the through holes is opened in the annular groove, and is extended from the annular groove to the opposite surface.Type: ApplicationFiled: December 5, 2016Publication date: March 23, 2017Applicant: Toshiba Electron Tubes & Devices Co.,Ltd.Inventors: Harunobu FUKUSHIMA, Tetsuya Yonezawa, Hitoshi Hattori
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Patent number: 9351694Abstract: According to one embodiment, a cooler includes a casing, a radiator unit which is installed in a circulation path, where a coolant is circulated, and is configured to externally discharge heat of the coolant, and a fan unit housed in the casing to generate an air flow passing through the radiator unit. A windward side of the radiator unit is exposed to an outer side of the casing.Type: GrantFiled: February 5, 2014Date of Patent: May 31, 2016Assignee: Toshiba Electron Tubes & Devices Co., Ltd.Inventors: Hidero Anno, Tomonari Ishihara, Tetsuya Yonezawa, Harunobu Fukushima, Chiharu Tadokoro, Hitoshi Hattori
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Patent number: 9251993Abstract: According to one embodiment, an X-ray tube including an electron emission source which emits an electron, an anode target which comprises a target layer emitting an X-ray by the electron from the electron emission source, and a substrate supporting the target layer and composed from a carbide-strengthened molybdenum alloy, an evacuated outer surrounding envelope which contains the electron emission source and the anode target, a diffusion barrier layer which is integrally formed with the substrate by a powder metallurgy method on a part of a top surface of the substrate and is composed of a high-melting-point metal lacking of carbon-element content compared with carbon-element content in the substrate, and a thermal radiation film which is formed on at least a part of a top surface of the diffusion barrier layer and composed of metallic oxide.Type: GrantFiled: April 25, 2014Date of Patent: February 2, 2016Assignees: KABUSHIKI KAISHA TOSHIBA, Toshiba Electron Tubes & Devices Co., Ltd.Inventors: Hidero Anno, Tetsuya Yonezawa
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Publication number: 20140321620Abstract: According to one embodiment, an X-ray tube including an electron emission source which emits an electron, an anode target which comprises a target layer emitting an X-ray by the electron from the electron emission source, and a substrate supporting the target layer and composed from a carbide-strengthened molybdenum alloy, an evacuated outer surrounding envelope which contains the electron emission source and the anode target, a diffusion barrier layer which is integrally formed with the substrate by a powder metallurgy method on a part of a top surface of the substrate and is composed of a high-melting-point metal lacking of carbon-element content compared with carbon-element content in the substrate, and a thermal radiation film which is formed on at least a part of a top surface of the diffusion barrier layer and composed of metallic oxide.Type: ApplicationFiled: April 25, 2014Publication date: October 30, 2014Applicants: KABUSHIKI KAISHA TOSHIBA, TOSHIBA ELECTRON TUBES & DEVICES CO., LTD.Inventors: Hidero ANNO, TETSUYA YONEZAWA
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Publication number: 20140153689Abstract: According to one embodiment, a cooler includes a casing, a radiator unit which is installed in a circulation path, where a coolant is circulated, and is configured to externally discharge heat of the coolant, and a fan unit housed in the casing to generate an air flow passing through the radiator unit. A windward side of the radiator unit is exposed to an outer side of the casing.Type: ApplicationFiled: February 5, 2014Publication date: June 5, 2014Applicants: Kabushiki Kaisha Toshiba, Toshiba Elctron Tubes & Devices Co., Ltd.Inventors: Hidero Anno, Tomonari Ishihara, Tetsuya Yonezawa, Harunobu Fukushima, Chiharu Todokoro, Hitoshi Hattori
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Patent number: 8582722Abstract: A rotary anode X-ray tube apparatus according to an embodiment of the present invention includes a stationary shaft, a cooling bath that is provided in the stationary shaft, a rotary cylinder that is rotatably supported to the stationary shaft, a target that is provided in the rotary cylinder, a cathode that is disposed to face the target, and a vacuum enclosure that stores these components. The stationary shaft has a large-diameter portion provided in a portion thereof and is provided with a flow passage through which a cooling fluid flows. The cooling bath is provided by thinning the wall thickness of the large-diameter portion to increase the flow passage diameter of a portion of the flow passage. The rotary cylinder covers an area of the stationary shaft including the large-diameter portion through a liquid metal and is rotatably supported to the stationary shaft. The target has a hollow circular plate shape that is provided on an outer circumferential surface of the rotary cylinder.Type: GrantFiled: September 3, 2010Date of Patent: November 12, 2013Assignees: Kabushiki Kaisha Toshiba, Toshiba Electron Tubes & Devices Co., LtdInventors: Chiharu Tadokoro, Yasutaka Ito, Hitoshi Hattori, Ryoichi Takahashi, Tetsuya Yonezawa, Hironori Nakamuta
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Publication number: 20110058654Abstract: A rotary anode X-ray tube apparatus according to an embodiment of the present invention includes a stationary shaft, a cooling bath that is provided in the stationary shaft, a rotary cylinder that is rotatably supported to the stationary shaft, a target that is provided in the rotary cylinder, a cathode that is disposed to face the target, and a vacuum enclosure that stores these components. The stationary shaft has a large-diameter portion provided in a portion thereof and is provided with a flow passage through which a cooling fluid flows. The cooling bath is provided by thinning the wall thickness of the large-diameter portion to increase the flow passage diameter of a portion of the flow passage. The rotary cylinder covers an area of the stationary shaft including the large-diameter portion through a liquid metal and is rotatably supported to the stationary shaft. The target has a hollow circular plate shape that is provided on an outer circumferential surface of the rotary cylinder.Type: ApplicationFiled: September 3, 2010Publication date: March 10, 2011Applicants: KABUSHIKI KAISHA TOSHIBA, TOSHIBA ELECTRON TUBES & DEVICES CO., LTD.Inventors: Chiharu Tadokoro, Yasutaka Ito, Hitoshi Hattori, Ryoichi Takahashi, Tetsuya Yonezawa, Hironori Nakamuta
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Patent number: 7801278Abstract: 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.Type: GrantFiled: March 20, 2009Date of Patent: September 21, 2010Assignee: Kabushiki Kaisha ToshibaInventors: Yasutaka Ito, Hitoshi Hattori, Yasuo Yoshii, Chiharu Tadokoro, Hironori Nakamuta, Tetsuya Yonezawa
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Patent number: 7746982Abstract: 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.Type: GrantFiled: September 16, 2008Date of Patent: June 29, 2010Assignee: Kabushiki Kaisha ToshibaInventors: Yasuo Yoshii, Chiharu Tadokoro, Yasutaka Ito, Hitoshi Hattori, Hironori Nakamuta, Tetsuya Yonezawa
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Patent number: 7697665Abstract: A rotating anode X-ray tube includes a fixed body having a radial sliding bearing surface and a channel therein through which a coolant flows, a rotor including a discoid large-diameter portion, which has a recess fitted with one end portion of the fixed body with a clearance therebetween and constitutes an anode target, and a small-diameter portion, which has on an inner surface thereof a radial sliding bearing surface which faces the aforesaid radial sliding bearing surface with a clearance, and is united with the large-diameter portion at one end portion thereof, a lubricant filling the clearances, a cathode arranged opposite to the anode target, and a vacuum envelope which contains the fixed body, the rotor, the lubricant and the cathode, and fixes the fixed body at another end portion of the fixed body situated opposite the one end portion of the fixed body fitted in the recess.Type: GrantFiled: May 20, 2009Date of Patent: April 13, 2010Assignees: Kabushiki Kaisha Toshiba, Toshiba Electron Tubes & Devices Co., Ltd.Inventors: Tetsuya Yonezawa, Hironori Nakamuta, Ryoichi Takahashi, Yasuo Yoshii, Hitoshi Hattori, Yasutaka Ito
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Publication number: 20090245469Abstract: 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.Type: ApplicationFiled: March 20, 2009Publication date: October 1, 2009Inventors: Yasutaka Ito, Hitoshi Hattori, Yasuo Yoshii, Chiharu Todokoro, Hironori Nakamuta, Tetsuya Yonezawa
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Publication number: 20090225950Abstract: A rotating anode X-ray tube includes a fixed body having a radial sliding bearing surface and a channel therein through which a coolant flows, a rotor including a discoid large-diameter portion, which has a recess fitted with one end portion of the fixed body with a clearance therebetween and constitutes an anode target, and a small-diameter portion, which has on an inner surface thereof a radial sliding bearing surface which faces the aforesaid radial sliding bearing surface with a clearance, and is united with the large-diameter portion at one end portion thereof, a lubricant filling the clearances, a cathode arranged opposite to the anode target, and a vacuum envelope which contains the fixed body, the rotor, the lubricant and the cathode, and fixes the fixed body at another end portion of the fixed body situated opposite the one end portion of the fixed body fitted in the recess.Type: ApplicationFiled: May 20, 2009Publication date: September 10, 2009Applicants: KABUSHIKI KAISHA TOSHIBA, Toshiba Electron Tubes & Device Co., Ltd.Inventors: Tetsuya Yonezawa, Hironori Nakamuta, Ryoichi Takahashi, Yasuo Yoshii, Hitoshi Hattori, Yasutaka Ito
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Publication number: 20090080616Abstract: 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.Type: ApplicationFiled: September 16, 2008Publication date: March 26, 2009Inventors: YASUO YOSHII, Chiharu Tadokoro, Yasutaka Ito, Hitoshi Hattori, Hironori Nakamuta, Tetsuya Yonezawa