Patents by Inventor Yukihiko Kazao
Yukihiko Kazao 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).
-
Publication number: 20080042363Abstract: Hydrogen gas is circulated to cool an electric rotating machine main body, and brush seals are provided to contact a predetermined position on the outer circumferential surface of a rotating shaft. As a result, contact of a sealing oil and the hydrogen gas, contact of a lubricating oil and the sealing oil in the bearing, and leakage of the hydrogen gas outside the machine are prevented.Type: ApplicationFiled: October 19, 2007Publication date: February 21, 2008Inventors: Yutaka HASHIBA, Makoto Mikami, Takeshi Hayashi, Yukihiko Kazao, Ikuo Saito, Hidekazu Shiomi, Yoshihiro Taniyama, Yasuo Kabata
-
Patent number: 7291947Abstract: Hydrogen gas is circulated to cool an electric rotating machine main body, and brush seals are provided to contact a predetermined position on the outer circumferential surface of a rotating shaft. As a result, contact of a sealing oil and the hydrogen gas, contact of a lubricating oil and the sealing oil in the bearing, and leakage of the hydrogen gas outside the machine are prevented.Type: GrantFiled: May 13, 2005Date of Patent: November 6, 2007Assignee: Kabushiki Kaisha ToshibaInventors: Yutaka Hashiba, Makoto Mikami, Takeshi Hayashi, Yukihiko Kazao, Ikuo Saito, Hidekazu Shiomi, Yoshihiro Taniyama, Yasuo Kabata
-
Patent number: 7170209Abstract: A rotor for a reluctance type rotating machine includes a rotor core formed by stacking a number of annular core materials each of which includes magnetic concave and convex portions. The rotor core has two keys which are formed at two positions on an inner circumference of the rotor core. The positions are spaced 180 degrees apart from each other with respect to the rotor core. The rotor core is divided into a plurality of blocks and the core materials constituting at least one block have the magnetic concave and convex portions shifted by a predetermined angle relative to the core materials constituting the other or another block on the basis of a center line passing through the keys. A whole or part of the core materials of at least one block are located circumferentially 180 degrees apart form the core materials constituting the other or another block.Type: GrantFiled: April 28, 2004Date of Patent: January 30, 2007Assignees: Kabushiki Kaisha Toshiba, Toshiba Industrial Products Manufacturing CorporationInventors: Takashi Araki, Masakatsu Matsubara, Motoyasu Mochizuki, Yukihiko Kazao, Masanori Arata, Yasuo Hirano, Nobutake Aikura, Akito Kondou, Masahiko Yamashiki, Masanori Ohashi, Takashi Hanai
-
Patent number: 7057322Abstract: A rotor for a reluctance type rotating machine includes a rotor core formed by stacking a number of annular core materials each of which includes magnetic concave and convex portions alternately formed on an outer circumference thereof and a central through hole, the rotor core having a key axially extending on an outer circumference, the rotor core being divided into a plurality of blocks, the core materials constituting one of at least three blocks having the magnetic concave and convex portions shifted by a predetermined angle in one of a rotating direction of the rotor and a direction opposite the rotating direction of the rotor relative to a center line passing the key, the core materials constituting each one of the blocks located at both ends of the one block having the magnetic concave and convex portions shifted by a predetermined angle in the other of the rotating direction of the rotor and the direction opposite the rotating direction of the rotor relative to a center line passing the key, and a roType: GrantFiled: July 23, 2004Date of Patent: June 6, 2006Assignees: Kabushiki Kaisha Toshiba, Aishin AW Co., Ltd., Toshiba Industrial Products Manufacturing CorporationInventors: Takashi Araki, Masakatsu Matsubara, Motoyasu Mochizuki, Yukihiko Kazao, Masanori Arata, Yasuo Hirano, Nobutake Aikura, Akito Kondo, Masahiko Yamashiki, Masanori Ohashi, Takashi Hanai, Ken Takeda, Hiroshi Morohashi
-
Publication number: 20050206249Abstract: Hydrogen gas is circulated to cool an electric rotating machine main body, and brush seals are provided to contact a predetermined position on the outer circumferential surface of a rotating shaft. As a result, contact of a sealing oil and the hydrogen gas, contact of a lubricating oil and the sealing oil in the bearing, and leakage of the hydrogen gas outside the machine are prevented.Type: ApplicationFiled: May 13, 2005Publication date: September 22, 2005Inventors: Yutaka Hashiba, Makoto Mikami, Takeshi Hayashi, Yukihiko Kazao, Ikuo Saito, Hidekazu Shiomi, Yoshihiro Taniyama, Yasuo Kabata
-
Publication number: 20050104468Abstract: A rotor for a reluctance type rotating machine includes a rotor core formed by stacking a number of annular core materials each of which includes magnetic concave and convex portions alternately formed on an outer circumference thereof and a central through hole, the rotor core having a key axially extending on an outer circumference, the rotor core being divided into a plurality of blocks, the core materials constituting one of at least three blocks having the magnetic concave and convex portions shifted by a predetermined angle in one of a rotating direction of the rotor and a direction opposite the rotating direction of the rotor relative to a center line passing the key, the core materials constituting each one of the blocks located at both ends of the one block having the magnetic concave and convex portions shifted by a predetermined angle in the other of the rotating direction of the rotor and the direction opposite the rotating direction of the rotor relative to a center line passing the key, and a roType: ApplicationFiled: July 23, 2004Publication date: May 19, 2005Applicants: KABUSHIKI KAISHA TOSHIBA, AISIN AW CO., LTD., TOSHIBA INDUSTRIAL PRODUCTS MANUFACTURING CORP.Inventors: Takashi Araki, Masakatsu Matsubara, Motoyasu Mochizuki, Yukihiko Kazao, Masanori Arata, Yasuo Hirano, Nobutake Aikura, Akito Kondou, Masahiko Yamashiki, Masanori Ohashi, Takashi Hanai, Ken Takeda, Hiroshi Morohashi
-
Publication number: 20050023922Abstract: A rotor for a reluctance type rotating machine includes a rotor core formed by stacking a number of annular core materials each of which includes magnetic concave and convex portions alternately formed on an outer circumference thereof and a central through hole, the rotor core having a key axially extending on an outer circumference thereof, the rotor core being divided into a plurality of blocks, the core materials constituting at least one block having the magnetic concave and convex portions shifted by a predetermined angle relative to the core materials constituting the other or another block on the basis of a center line passing the key, and a rotational shaft inserted through the central hole of the rotor core, the shaft having a key groove engaging the key of the rotor core.Type: ApplicationFiled: April 28, 2004Publication date: February 3, 2005Applicants: KABUSHIKI KAISHA TOSHIBA, TOSHIBA INDUSTRIAL PRODUCTS MANUFACTURING CORP.Inventors: Takashi Araki, Masakatsu Matsubara, Motoyasu Mochizuki, Yukihiko Kazao, Masanori Arata, Yasuo Hirano, Nobutake Aikura, Akito Kondou, Masahiko Yamashiki, Masanori Ohashi, Takashi Hanai
-
Patent number: 6794784Abstract: Permanent magnets are arranged to be supported by the provision of permanent magnet position-locating projections (12) in permanent magnet embedding holes (5). By optimizing the shape of thin-wall regions (18) and (19) within rotor core (4), leakage of flux generated from the permanent magnets is reduced and the strength of the thin-wall regions where stress is concentrated is ensured.Type: GrantFiled: May 24, 2001Date of Patent: September 21, 2004Assignees: Kabushiki Kaisha Toshiba, Toshiba Industrial Products Manufacturing CorporationInventors: Norio Takahashi, Yutaka Hashiba, Kazuto Sakai, Masanori Arata, Yukihiko Kazao, Takashi Araki, Masakatsu Matsubara, Yasuo Hirano
-
Publication number: 20020047435Abstract: Permanent magnets are arranged to be supported by the provision of permanent magnet position-locating projections (12) in permanent magnet embedding holes (5). By optimizing the shape of thin-wall regions (18) and (19) within rotor core (4), leakage of flux generated from the permanent magnets is reduced and the strength of the thin-wall regions where stress is concentrated is ensured.Type: ApplicationFiled: May 24, 2001Publication date: April 25, 2002Inventors: Norio Takahashi, Yutaka Hashiba, Kazuto Sakai, Masanori Arata, Yukihiko Kazao, Takashi Araki, Masakatsu Matsubara, Yasuo Hirano
-
Patent number: 5811743Abstract: A passenger car of an elevator is transversely vibrated when it is hoisted up or down due to curves in guide rails and level differences at joints of the guide rails. An elevator vibration control apparatus of this invention employs a vibration or displacement sensor attached to a passenger car chamber to detect such transverse vibration of the passenger car. A controller calculates an operation quantity of an actuator to cancel the detected vibration of the passenger car. According to the calculated operation quantity, a servomotor is driven to displace the passenger car in a direction to cancel the transverse vibration and suppress force applied to the passenger car. As a result, the transverse vibration of the passenger car is reduced, and comfortableness of riding in the passenger car is improved.Type: GrantFiled: August 3, 1995Date of Patent: September 22, 1998Assignee: Kabushiki Kaisha ToshibaInventors: Hideya Kohara, Shigeo Nakagaki, Tadashi Shudo, Yukihiko Kazao