Patents by Inventor Teruo Tamura
Teruo Tamura 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: 7372183Abstract: A synchronous motor includes a stator, a rotor and permanent magnets. The rotor includes a rotor iron core that is rotatable relative to the stator, and conductor bars accommodated within corresponding slots in the rotor iron core. The conductor bars have their opposite ends short-circuited by respective shortcircuit rings to form a starter cage conductor. The rotor also has a plurality of magnet retaining holes defined therein, in which permanent magnets are embedded. The conductor bar holes are positioned in an axial direction and inwardly from the magnet retaining holes. The conductor bars within the holes protrude outwardly from an axial end of the rotor iron core to form projections for securing an end plate to the end of the rotor iron core, the end plate comprising a non-magnetizable material.Type: GrantFiled: January 12, 2007Date of Patent: May 13, 2008Assignees: Matsushita Electric Industrial Co., Ltd., Matsushita Refrigeration CompanyInventors: Kenji Sasaki, Teruo Tamura, Michihiro Yoshida, Toru Takimoto, Hideyuki Taniguchi, Hiroyuki Uesaka
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Publication number: 20070108862Abstract: A synchronous motor includes a stator, a rotor and permanent magnets. The rotor includes a rotor iron core that is rotatable relative to the stator, and conductor bars accommodated within corresponding slots in the rotor iron core. The conductor bars have their opposite ends shortcircuited by respective shortcircuit rings to form a starter cage conductor. The rotor also has a plurality of magnet retaining holes defined therein, in which permanent magnets are embedded. The conductor bar holes are positioned in an axial direction and inwardly from the magnet retaining holes. The conductor bars within the holes protrude outwardly from an axial end of the rotor iron core to form projections for securing an end plate to the end of the rotor iron core, the end plate comprising a non-magnetizable material.Type: ApplicationFiled: January 12, 2007Publication date: May 17, 2007Applicants: MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD., MATSUSHITA REFRIGERATION COMPANYInventors: Kenji SASAKI, Teruo TAMURA, Michihiro YOSHIDA, Toru TAKIMOTO, Hideyuki TANIGUCHI, Hiroyuki UESAKA
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Patent number: 7183686Abstract: A synchronous motor includes a stator, a rotor and permanent magnets. The rotor includes a rotor iron core that is rotatable relative to the stator, and a plurality of conductor bars accommodated within corresponding slots in the rotor iron core. The conductor bars have their opposite ends shortcircuited by respective shortcircuit rings to form a starter cage conductor. The rotor also has a plurality of magnet retaining slots defined therein at a location on an inner side of the conductor bars, in which hole permanent magnets are embedded.Type: GrantFiled: November 29, 2005Date of Patent: February 27, 2007Assignees: Matsushita Electric Industrial Co., Ltd., Matsushita Refrigeration CompanyInventors: Kenji Sasaki, Teruo Tamura, Michihiro Yoshida, Toru Takimoto, Hideyuki Taniguchi, Hiroyuki Uesaka
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Publication number: 20060119205Abstract: A synchronous motor includes a stator, a rotor and permanent magnets. The rotor includes a rotor iron core that is rotatable relative to the stator, and a plurality of conductor bars accommodated within corresponding slots in the rotor iron core. The conductor bars have their opposite ends shortcircuited by respective shortcircuit rings to form a starter cage conductor. The rotor also has a plurality of magnet retaining slots defined therein at a location on an inner side of the conductor bars, in which hole permanent magnets are embedded.Type: ApplicationFiled: November 29, 2005Publication date: June 8, 2006Applicants: MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD., MATSUSHITA REFRIGERATION COMPANYInventors: Kenji Sasaki, Teruo Tamura, Michihiro Yoshida, Toru Takimoto, Hideyuki Taniguchi, Hiroyuki Uesaka
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Patent number: 7019427Abstract: A synchronous motor includes a stator, a rotor and permanent magnets. The rotor includes a rotor iron core rotatable relative to the stator, and a plurality of conductor bars accommodated within corresponding slots in the rotor iron core. The conductor bars have their opposite ends shortcircuited by respective shortcircuit rings to form a starter cage conductor. The rotor also has a plurality of magnet retaining slots defined therein at a location on an inner side of the conductor bars, in which hole permanent magnets are embedded.Type: GrantFiled: January 14, 2005Date of Patent: March 28, 2006Assignees: Matsushita Electric Industrial Co., Ltd., Matsushita Refrigeration CompanyInventors: Kenji Sasaki, Teruo Tamura, Michihiro Yoshida, Toru Takimoto, Hideyuki Taniguchi, Hiroyuki Uesaka
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Publication number: 20050121991Abstract: A synchronous motor includes a stator, a rotor and permanent magnets. The rotor includes a rotor iron core rotatable relative to the stator, and a plurality of conductor bars accommodated within corresponding slots in the rotor iron core. The conductor bars have their opposite ends shortcircuited by respective shortcircuit rings to form a starter cage conductor. The rotor also has a plurality of magnet retaining slots defined therein at a location on an inner side of the conductor bars, in which hole permanent magnets are embedded.Type: ApplicationFiled: January 14, 2005Publication date: June 9, 2005Applicants: Matsushita Electric Industrial Co., Ltd., Matsushita Refrigeration CompanyInventors: Kenji Sasaki, Teruo Tamura, Michihiro Yoshida, Toru Takimoto, Hideyuki Taniguchi, Hiroyuki Uesaka
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Patent number: 6876119Abstract: A synchronous motor includes a stator, a rotor and permanent magnets. The rotor includes a rotor iron core and rotatable relative to the stator, a plurality of conductor bars accommodated within corresponding slots in the rotor iron core. The conductor bars have their opposite ends shortcircuited by respective shortcircuit rings to form a starter cage conductor. The rotor also has a plurality of magnet retaining slots defined therein at a location on an inner side of the conductor bars, in which hole permanent magnets are embedded.Type: GrantFiled: March 5, 2004Date of Patent: April 5, 2005Assignees: Matsushita Electric Industral Co., Ltd., Matsushita Refrigeration CompanyInventors: Kenji Sasaki, Teruo Tamura, Michihiro Yoshida, Toru Takimoto, Hideyuki Taniguchi, Hiroyuki Uesaka
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Publication number: 20040169431Abstract: A synchronous motor includes a stator, a rotor and permanent magnets. The rotor includes a rotor iron core and rotatable relative to the stator, a plurality of conductor bars accommodated within corresponding slots in the rotor iron core. The conductor bars have their opposite ends shortcircuited by respective shortcircuit rings to form a starter cage conductor. The rotor also has a plurality of magnet retaining slots defined therein at a location on an inner side of the conductor bars, in which hole permanent magnets are embedded.Type: ApplicationFiled: March 5, 2004Publication date: September 2, 2004Applicants: Matsushita Electric Industrial Co., Ltd., Matsushita Refrigeration CompanyInventors: Kenji Sasaki, Teruo Tamura, Michihiro Yoshida, Toru Takimoto, Hideyuki Taniguchi, Hiroyuki Uesaka
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Patent number: 6727627Abstract: A synchronous motor includes a stator, a rotor and permanent magnets. The rotor includes a rotor iron core and rotatable relative to the stator, a plurality of conductor bars accommodated within corresponding slots in the rotor iron core. The conductor bars have their opposite ends shortcircuited by respective shortcircuit rings to form a starter squirrel cage conductor. The rotor also have a plurality of magnet retaining slots defined therein at a location on an inner side of the conductor bars, in which hole permanent magnets are embedded.Type: GrantFiled: January 2, 2002Date of Patent: April 27, 2004Assignees: Matsushita Electric Industrial Co., Ltd., Matsushita Refrigeration CompanyInventors: Kenji Sasaki, Teruo Tamura, Michihiro Yoshida, Toru Takimoto, Hideyuki Taniguchi, Hiroyuki Uesaka
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Patent number: 6547538Abstract: A compressor includes a compressing section accommodated in a hermetic container and a motor section, coupled to the compressing section, for driving the compressing section. The motor section has a bored section on an end of the compressing section side and a motor having two rotor poles and including a rotor core in which permanent magnets are buried. The compressing section includes a bearing made of non-magnetic material and extending inside the bored section. This structure reduces both of loss torque due to magnetic attraction between an inner wall of the bored section and the bearing, and eddy-current-loss in the bearing, so that a highly efficient compressor is obtainable.Type: GrantFiled: June 15, 2001Date of Patent: April 15, 2003Assignees: Matsushita Electric Industrial Co., Ltd., Matsushita Refrigeration CompanyInventors: Teruo Tamura, Tatsuyuki Iizuka, Kenji Sasaki, Fumitoshi Saito
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Patent number: 6181078Abstract: The present invention provides a discharge lamp lighting system in which a discharge lamp is lighted by a commercial power source without using a choke transformer, electric power can be saved, and, in order to prevent a bad influence of high harmonic waves generated from the discharge lamp upon other electronic equipment, the impedance ratio resonating with the third high harmonic wave component of the power source is established between a capacitor and a choke coil provided between the discharge lamp and an alternate current power source to facilitate resonance of the third high harmonic wave component, and, when a starting lighting circuit is temporarily turned ON, the discharge lamp is lighted.Type: GrantFiled: August 20, 1999Date of Patent: January 30, 2001Assignee: Kabushiki Kaisha TamurarikenInventors: Masao Sekiguchi, Teruo Tamura
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Patent number: D441715Type: GrantFiled: January 28, 2000Date of Patent: May 8, 2001Assignees: Matsushita Electric Industrial Co., Ltd., Matsushita Refrigeration Co.Inventors: Kenji Sasaki, Teruo Tamura