Patents by Inventor Hiroaki Asakura
Hiroaki Asakura 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).
-
Patent number: 10218243Abstract: A rolling bearing has an inner ring attached to a rotating shaft out of contact with a first end surface, and an outer ring is fitted onto an inner peripheral surface of a housing in contact with the first end surface. A sliding element is provided between a second end surface and the first end surface. A retaining portion is provided between the sliding element and the first end surface. A biasing portion is provided between the retaining portion and the first end surface to bias the retaining portion toward a second side in a lamination direction. The rotating shaft, the housing, the inner ring, the outer ring, a rolling element, the sliding element, the retaining portion, and the biasing portion are formed of a conductive material. The rotating shaft and the housing are electrically connected by the sliding element, the retaining portion, and the biasing portion.Type: GrantFiled: August 10, 2015Date of Patent: February 26, 2019Assignee: TOP CO., LTD.Inventors: Takayuki Kai, Kenji Sasaki, Hiroaki Asakura
-
Patent number: 10186916Abstract: The rotary machine includes a rotor rotatably provided and a resin-molded stator. The stator includes a stator core, a coil, and a mold portion. A tooth portion in the stator core includes first and second facing portions. The first facing portion includes a first facing surface where an air gap with the rotor becomes a first distance. The second facing portion is integrated with the first facing portion in the circumferential direction centered at the rotation axis of the rotor, and includes a second facing surface where the air gap becomes a second distance wider than the first distance. The second facing portion includes a groove portion on the second facing surface. The mold portion includes a first mold portion. The first mold portion covers the second facing portion, is provided at the groove portion, and includes a third facing surface where the air gap becomes the first distance.Type: GrantFiled: December 13, 2013Date of Patent: January 22, 2019Assignee: TOP CO., LTDInventors: Hiroaki Asakura, Nobuyuki Tanaka, Tadashi Uno, Shingo Yamada
-
Patent number: 10167652Abstract: A vertical seismic isolation device includes: a fixed frame; a movable frame arranged on the fixed frame; a support guide mechanism which allows only vertical movement of the movable frame; and a restoration member which maintains a constant distance between the movable frame and the fixed frame. The support guide mechanism includes: a track rail provided on the fixed frame; a moving block assembled to the track rail through rolling elements; a support leg, which has one end coupled to the moving block and another end coupled to the movable frame, and converts vertical movement of the movable frame into a motion of the moving block; and an auxiliary leg, which is half as long as the support leg, and has one end coupled to the support leg at an intermediate position in a longitudinal direction of the support leg and another end coupled to the fixed frame.Type: GrantFiled: August 5, 2016Date of Patent: January 1, 2019Assignee: THK CO., LTD.Inventors: Keisuke Nakakubo, Yoshihito Watanabe, Hiroaki Asakura, Tomokazu Oku, Tetsuya Fukumoto, Ryoji Tomono, Junichi Washida
-
Publication number: 20180216359Abstract: A vertical seismic isolation device includes: a fixed frame; a movable frame arranged on the fixed frame; a support guide mechanism which allows only vertical movement of the movable frame; and a restoration member which maintains a constant distance between the movable frame and the fixed frame. The support guide mechanism includes: a track rail provided on the fixed frame; a moving block assembled to the track rail through rolling elements; a support leg, which has one end coupled to the moving block and another end coupled to the movable frame, and converts vertical movement of the movable frame into a motion of the moving block; and an auxiliary leg, which is half as long as the support leg, and has one end coupled to the support leg at an intermediate position in a longitudinal direction of the support leg and another end coupled to the fixed frame.Type: ApplicationFiled: August 5, 2016Publication date: August 2, 2018Applicants: THK CO., LTD., THK CO., LTD.Inventors: Keisuke Nakakubo, Yoshihito Watanabe, Hiroaki Asakura, Tomokazu Oku, Tetsuya Fukumoto, Ryoji Tomono, Junichi Washida
-
Publication number: 20170201135Abstract: A core segment formed by laminating electrical steel sheets, a coupling hole having a lamination direction as its depth is formed in a portion of a yoke piece on a third side in a circumferential direction. An insulator includes a coupling pin protruding toward a second side in the lamination direction, at a portion of a first covering portion on a fourth side. A stator core formed by coupling core segments in a ring shape where the coupling pin of the insulator mounted on the core segment that is to the third side is inserted in the coupling hole of the core segment that is to the fourth side, and where a side surface on the fourth side of the yoke piece being to the third side and a side surface on the third side of the yoke piece being to the fourth side are in contact with each other.Type: ApplicationFiled: June 29, 2015Publication date: July 13, 2017Applicant: TOP CO., LTD.Inventors: Takayuki KAI, Kenji SASAKI, Hiroaki ASAKURA
-
Publication number: 20170187262Abstract: A rolling bearing has an inner ring attached to a rotating shaft out of contact with a first end surface, and an outer ring is fitted onto an inner peripheral surface of a housing in contact with the first end surface. A sliding element is provided between a second end surface and the first end surface. A retaining portion is provided between the sliding element and the first end surface. A biasing portion is provided between the retaining portion and the first end surface to bias the retaining portion toward a second side in a lamination direction. The rotating shaft, the housing, the inner ring, the outer ring, a rolling element, the sliding element, the retaining portion, and the biasing portion are formed of a conductive material. The rotating shaft and the housing are electrically connected by the sliding element, the retaining portion, and the biasing portion.Type: ApplicationFiled: August 10, 2015Publication date: June 29, 2017Applicant: TOP CO., LTD.Inventors: Takayuki KAI, Kenji SASAKI, Hiroaki ASAKURA
-
Patent number: 9666312Abstract: A chimney arranged inside of a reactor pressure vessel of a natural-circulation boiling water reactor is provided. The chimney includes plural flow channels which guide a steam-water two-phase flow generated in a reactor core to the upper part of the reactor pressure vessel. Each of the flow channels is formed by plural flow channel separation walls whose lower-most part is supported by a chimney lattice plate. Chimney spacers that support a horizontal load are arranged between the flow channel separation walls of the adjacent flow channels. Chimney support rings that support the horizontal load are arranged at the outermost periphery of the plural flow channels that are supported by the chimney lattice plate.Type: GrantFiled: November 16, 2012Date of Patent: May 30, 2017Assignee: Hitachi-GE Nuclear Energy, Ltd.Inventors: Sho Kuroita, Sadakatsu Sawahata, Yasuhiro Mabuchi, Hiroaki Asakura, Fumihito Hirokawa
-
Publication number: 20150340914Abstract: The rotary machine includes a rotor rotatably provided and a resin-molded stator. The stator includes a stator core, a coil, and a mold portion. A tooth portion in the stator core includes first and second facing portions. The first facing portion includes a first facing surface where an air gap with the rotor becomes a first distance. The second facing portion is integrated with the first facing portion in the circumferential direction centered at the rotation axis of the rotor, and includes a second facing surface where the air gap becomes a second distance wider than the first distance. The second facing portion includes a groove portion on the second facing surface. The mold portion includes a first mold portion. The first mold portion covers the second facing portion, is provided at the groove portion, and includes a third facing surface where the air gap becomes the first distance.Type: ApplicationFiled: December 13, 2013Publication date: November 26, 2015Applicant: TOP CO., LTD.Inventors: Hiroaki ASAKURA, Nobuyuki TANAKA, Tadashi UNO, Shingo YAMADA
-
Publication number: 20150332793Abstract: The present invention provides a chimney for a natural-circulation boiling water reactor having structural soundness capable of standing a horizontal load generated by a flow-induced vibration, an earthquake and the like.Type: ApplicationFiled: November 16, 2012Publication date: November 19, 2015Inventors: Sho KUROITA, Sadakatsu SAWAHATA, Yasuhiro MABUCHI, Hiroaki ASAKURA, Fumihito HIROKAWA
-
Patent number: 8514998Abstract: In implementing an induction heating stress improvement (IHSI) method in a nuclear plant, cooling characteristic with respect to the inner surface of piping is improved by appropriate structure/layout of nozzles, and further, the cooling effect when applying IHSI to a real machine is verified by installing a thermometer, as well as air in the portion subjected to IHSI is removed by heating the piping prior to the execution of IHSI.Type: GrantFiled: December 30, 2005Date of Patent: August 20, 2013Assignee: Hitachi-Ge Nuclear Energy, Ltd.Inventors: Shiro Takahashi, Kouji Shiina, Shoji Hayashi, Hideyo Saito, Minoru Masuda, Satoshi Kanno, Kenichi Nihei, Hiroaki Asakura
-
Patent number: 8348217Abstract: Provided are a vibration isolating table (1) with damping mechanism having initial rigidity so that a vibration isolation subject is not swayed under a state in which no vibrations act, and configured to function in a case where vibrations act so that the vibration isolation subject can be protected, and a vibration isolating table unit (15) using the vibration isolating table (1).Type: GrantFiled: August 10, 2010Date of Patent: January 8, 2013Assignee: THK Co., Ltd.Inventors: Keisuke Nakakubo, Hiroaki Asakura, Takashi Ogata
-
Publication number: 20120097825Abstract: Provided are a vibration isolating table (1) with damping mechanism having initial rigidity so that a vibration isolation subject is not swayed under a state in which no vibrations act, and configured to function in a case where vibrations act so that the vibration isolation subject can be protected, and a vibration isolating table unit (15) using the vibration isolating table (1).Type: ApplicationFiled: August 10, 2010Publication date: April 26, 2012Applicant: THK CO., LTD.Inventors: Keisuke Nakakubo, Hiroaki Asakura, Takashi Ogata
-
Publication number: 20060197638Abstract: In implementing an induction heating stress improvement (IHSI) method in a nuclear plant, cooling characteristic with respect to the inner surface of piping is improved by appropriate structure/layout of nozzles, and further, the cooling effect when applying IHSI to a real machine is verified by installing a thermometer, as well as air in the portion subjected to IHSI is removed by heating the piping prior to the execution of IHSI.Type: ApplicationFiled: December 30, 2005Publication date: September 7, 2006Inventors: Shiro Takahashi, Kouji Shiina, Shoji Hayashi, Hideyo Saito, Minoru Masuda, Satoshi Kanno, Kenichi Nihei, Hiroaki Asakura
-
Patent number: 6993369Abstract: Portable electronic equipment and a charger for portable electronic equipment allowing portable electronic equipment placed in the charger to be compact as small as possible and easy removal of the portable electronic equipment from the charger. The portable electronic equipment has engagement recesses formed on side portions of the equipment housing at positions separated from other end of the equipment housing in such a way that, when the other end of the equipment housing is pushed down in a state, it is placed in and held by the charger, one end of the equipment housing is pivoted about the engagement projections, moving upward and producing a moment sufficient to disengage the engagement of the engagement latch from the engagement hole. The charger has engagement projections formed at positions where they engage with the engagement recesses which are formed on of the portable electronic equipment.Type: GrantFiled: January 17, 2003Date of Patent: January 31, 2006Assignee: Kabushiki Kaisha ToshibaInventor: Hiroaki Asakura
-
Publication number: 20030148798Abstract: To provide portable electronic equipment and a charger for the portable electronic equipment which allows achievement of a system as a whole with the portable electronic equipment placed in the charger to be compact as small as possible and easy removal of the portable electronic equipment from the charger.Type: ApplicationFiled: January 17, 2003Publication date: August 7, 2003Applicant: Kabushiki Kaisha ToshibaInventor: Hiroaki Asakura
-
Patent number: 5512345Abstract: A vacuum insulator casing for thermal insulating between inside and outside of the casing. The vacuum insulator casing has an inner casing constructed at least two planer sections and a corner section located between the planer sections and an outer casing having a similar shape to the inner casing, which covers the inner casing having a space between them. The space the inner and outer casings is filled with a plurality of vacuum insulator panels and other insulator material. Each vacuum insulator panel has a gas tight outer package from which air has been evacuated and a low thermal conductivity material filled in the package. The vacuum insulator panels are sandwiched between the inner and outer casings so as to touch both casings.Type: GrantFiled: March 28, 1995Date of Patent: April 30, 1996Assignee: Kabushiki Kaisha ToshibaInventors: Masato Tsutsumi, Haruhisa Yamasita, Hideo Sampei, Kanako Fujii, Hiroaki Asakura
-
Patent number: 4937030Abstract: A method of forming a slush mold and a synthetic resin skin utilizing the slush mold. The method includes the steps of roughing a foamed synthetic resin surface to define a prototype having a plurality of irregularly spaced and irregularly sized recesses, forming a metal mold to have a molding surface accurately complementary to the prototype surface and molding a skin of synthetic resin against the molding surface of the metal mold. The recesses preferably have a cross section dimension in the range of approximately 170 to 500 microns and a depth in the range of approximately 8 to 133 microns. Narrower preferred ranges are disclosed. The surface preferably has a regular unbiased variance of less than approximately 300 microns and preferably less than 200 microns.Type: GrantFiled: August 2, 1989Date of Patent: June 26, 1990Assignee: Mitusboshi Belting Ltd.Inventors: Takashi Nishiyama, Shuichi Yokota, Masaru Takino, Hiroaki Asakura, Junichiro Iseki