Patents by Inventor Osamu Kazama
Osamu Kazama 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: 11063482Abstract: A stator and a motor include a plurality of split cores disposed in an annular shape and a connector configured to connect the plurality of split cores to allow a circumferential spacing distance between the split cores to be changed, wherein a diameter of the stator is changed by changing the spacing distance between the split cores in a state in which the plurality of split cores disposed in an annular shape by the connector.Type: GrantFiled: July 24, 2017Date of Patent: July 13, 2021Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: Osamu Kazama, Katsuhisa Mukai
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Patent number: 10027191Abstract: A compressor includes: a motor that includes a rotor including opposed magnets; a compression unit that compresses a refrigerant; and a crankshaft that is connected to the motor and the compression unit and is configured to transmit rotational driving of the motor to the compression unit, wherein the magnets are arranged such that the difference in magnetic force between the opposed magnets eliminates a force that deflects the crankshaft when the motor is rotationally driven.Type: GrantFiled: December 21, 2012Date of Patent: July 17, 2018Assignee: Mitsubishi Electric CorporationInventors: Kazuchika Tsuchida, Osamu Kazama
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Publication number: 20180076673Abstract: A stator and a motor include a plurality of split cores disposed in an annular shape and a connector configured to connect the plurality of split cores to allow a circumferential spacing distance between the split cores to be changed, wherein a diameter of the stator is changed by changing the spacing distance between the split cores in a state in which the plurality of split cores disposed in an annular shape by the connector.Type: ApplicationFiled: July 24, 2017Publication date: March 15, 2018Applicant: Samsung Electronics Co., Ltd.Inventors: Osamu KAZAMA, Katsuhisa MUKAI
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Patent number: 9828996Abstract: A rotor has at its two axis end portions an upper large-diameter inner circumferential portion and a lower large-diameter inner circumferential portion that have inner diameters larger than the inner diameter of the axially middle portion of the rotor and are offset in the radial direction. A crankshaft has a passageway, which is formed in the crankshaft and allows refrigerant to flow therethrough, and a gas venting hole, which provides communication between the passageway and at least one discharge opening formed in the outer circumferential surface of the crankshaft. The at least one discharge opening is formed at a position facing the inner circumferential surface of the lower large-diameter inner circumferential portion 5b on the compression unit side.Type: GrantFiled: December 20, 2012Date of Patent: November 28, 2017Assignee: Mitsubishi Electric CorporationInventors: Kazuchika Tsuchida, Osamu Kazama
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Publication number: 20150330382Abstract: A rotor has at its two axis end portions an upper large-diameter inner circumferential portion and a lower large-diameter inner circumferential portion that have inner diameters larger than the inner diameter of the axially middle portion of the rotor and are offset in the radial direction. A crankshaft has a passageway, which is formed in the crankshaft and allows refrigerant to flow therethrough, and a gas venting hole, which provides communication between the passageway and at least one discharge opening formed in the outer circumferential surface of the crankshaft. The at least one discharge opening is formed at a position facing the inner circumferential surface of the lower large-diameter inner circumferential portion 5b on the compression unit side.Type: ApplicationFiled: December 20, 2012Publication date: November 19, 2015Applicant: Mitsubishi Electric CorporationInventors: Kazuchika TSUCHIDA, Osamu KAZAMA
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Publication number: 20150333582Abstract: A compressor includes: a motor that includes a rotor including opposed magnets; a compression unit that compresses a refrigerant; and a crankshaft that is connected to the motor and the compression unit and is configured to transmit rotational driving of the motor to the compression unit, wherein the magnets are arranged such that the difference in magnetic force between the opposed magnets eliminates a force that deflects the crankshaft when the motor is rotationally driven.Type: ApplicationFiled: December 21, 2012Publication date: November 19, 2015Applicant: Mitsubishi Electric CorporationInventors: Kazuchika TSUCHIDA, Osamu KAZAMA
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Patent number: 7868509Abstract: It is an object to obtain a highly efficient and low-cost single-phase motor and a hermetic compressor employing the motor by producing the motor in a form that allows a proper material layout, with securing a magnetic path of a coreback of a stator iron core. According to the present invention, in a single-phase motor having a stator including a stator iron core formed by laminating a plurality of electromagnetic steel sheets and provided with a slot and single-phase two-pole distributed windings composed of a main winding and an auxiliary winding contained in the slot, and a rotor placed through a gap on an inner circumference of the stator, at least five notches each having a roughly straight lined shape are provided on an outer circumference of the stator iron core, so that a quadrangle is formed by straight lines including four notches out of the at least five notches.Type: GrantFiled: December 9, 2005Date of Patent: January 11, 2011Assignee: Mitsubishi Electric CorporationInventors: Hayato Yoshino, Yoshio Takita, Koji Yabe, Osamu Kazama
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Publication number: 20070210668Abstract: It is an object to obtain a highly efficient and low-cost single-phase motor and a hermetic compressor employing the motor by producing the motor in a form that allows a proper material layout, with securing a magnetic path of a coreback of a stator iron core. According to the present invention, in a single-phase motor having a stator including a stator iron core formed by laminating a plurality of electromagnetic steel sheets and provided with a slot and single-phase two-pole distributed windings composed of a main winding and an auxiliary winding contained in the slot, and a rotor placed through a gap on an inner circumference of the stator, at least five notches each having a roughly straight lined shape are provided on an outer circumference of the stator iron core, so that a quadrangle is formed by straight lines including four notches out of the at least five notches.Type: ApplicationFiled: December 9, 2005Publication date: September 13, 2007Applicant: Mitsubishi Electric CorporationInventors: Hayato Yoshino, Yoshio Takita, Koji Yabe, Osamu Kazama
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Patent number: 6974905Abstract: In a coaxial cable, a first insulating sheath covers an outer periphery of a first conductive wire. The first insulating sheath includes at least three insulating layers. A plurality of second conductive wires are spirally side-wound on an outer periphery of the first insulating sheath. The coaxial cable is wound around a core forming a closed magnetic path. Both ends of the first conductive wire serve as one of input terminals and output terminals of the transmission transformer, and both ends of the second conductive wires serve as the other one of the input terminals and the output terminals.Type: GrantFiled: December 22, 2003Date of Patent: December 13, 2005Assignee: Nihon Kohden CorporationInventor: Osamu Kazama
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Patent number: 6858964Abstract: A stator iron core of an electric motor including plural magnetic pole segments. Each of the pole segments include a back yoke portion, a teeth portion projected from the back yoke portion, a connection portion provided to the back yoke portion for connecting adjacent magnetic pole segments, and a stepped-shaped notch on an outer circumference of the back yoke portion. Further, the stator iron core is circularly formed by bending the connection portions of the plural magnetic pole segments.Type: GrantFiled: September 20, 2002Date of Patent: February 22, 2005Assignee: Mitsubishi Denki Kabushiki KaishaInventors: Kouji Masumoto, Tomoaki Oikawa, Tsuneyoshi Tajima, Osamu Kazama, Masaki Kato, Toshio Arai, Takuhito Miyajima, Hiroyuki Akita
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Patent number: 6856064Abstract: A stator iron core of an electric motor including plural magnetic pole segments connected and confronted by plural confronting surfaces. Further, two of the confronting surfaces respectively include a V-shaped projection and a V-shaped recess.Type: GrantFiled: September 20, 2002Date of Patent: February 15, 2005Assignee: Mitsubishi Denki Kabushiki KaishaInventors: Kouji Masumoto, Tomoaki Oikawa, Tsuneyoshi Tajima, Osamu Kazama, Masaki Kato, Toshio Arai, Takuhito Miyajima, Hiroyuki Akita
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Publication number: 20040129446Abstract: In a coaxial cable, a first insulating sheath covers an outer periphery of a first conductive wire. The first insulting sheath includes at least three insulating layers. A plurality of second conductive wires are spirally side-wound on an outer periphery of the first insulating sheath. The coaxial cable is wound around a core forming a dosed magnetic path. Both ends of the first conductive wire serve as one of input terminals and output terminals of the transmission transformer, and both ends of the second conductive wires serve as the other one of the input terminals and the output terminals.Type: ApplicationFiled: December 22, 2003Publication date: July 8, 2004Applicant: NIHON KOHDEN CORPORATIONInventor: Osamu Kazama
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Patent number: 6717315Abstract: To provide a permanent-magnet motor having a permanent magnet which can reduce the vibration and the noise without lowering the efficiency of the motor, the permanent-magnet motor according to, the present invention has a stator 1 having stator winding of plural phases, a rotor 10 having a stator core 12 facing to inside of the stator across a gap part and a permanent magnet 14 provided to the rotor core. In the permanent-magnet motor, the permanent magnet 14 is made to have both a convex part to the inner diameter side and a convex part to the outer diameter side in the cross section taken vertically to the rotation axis, and a focus of magnetic orientation of each magnetic pole of the permanent magnet is located outside of the rotor 10.Type: GrantFiled: July 24, 2001Date of Patent: April 6, 2004Assignee: Mitsubishi Denki Kabushiki KaishaInventors: Tsuneyoshi Tajima, Tomoaki Oikawa, Osamu Kazama, Koji Masumoto, Masaki Katou, Kazuhiko Baba
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Publication number: 20030020359Abstract: The present invention aims to provide a stator iron core of an electric motor which can eliminate the reduction of efficiency, vibration or noise of the electric motor by decreasing stress generated at a bottom portion of a slot on manufacturing or integrating the electric motor. Plural magnetic pole segments, each having a back yoke portion and a teeth portion projected from the back yoke portion, are connected so as to be bendable via a connection portion provided to the back yoke portion. After winding the coil wire, a stator iron core of the electric motor is circularly formed by bending the connection portion of the plural magnetic pole segments. In the stator iron core, the bottom portion of the slot constituted by the back yoke portion and the teeth portion is made to have a curved line after the stator iron core is circularly formed.Type: ApplicationFiled: September 20, 2002Publication date: January 30, 2003Applicant: MITSUBISHI DENKI KABUSHIKI KAISHAInventors: Kouji Masumoto, Tomoaki Oikawa, Tsuneyoshi Tajima, Osamu Kazama, Masaki Kato, Toshio Arai, Takuhito Miyajima, Hiroyuki Akita
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Publication number: 20030020358Abstract: The present invention aims to provide a stator iron core of an electric motor which can eliminate the reduction of efficiency, vibration or noise of the electric motor by decreasing stress generated at a bottom portion of a slot on manufacturing or integrating the electric motor. Plural magnetic pole segments, each having a back yoke portion and a teeth portion projected from the back yoke portion, are connected so as to be bendable via a connection portion provided to the back yoke portion. After winding the coil wire, a stator iron core of the electric motor is circularly formed by bending the connection portion of the plural magnetic pole segments. In the stator iron core, the bottom portion of the slot constituted by the back yoke portion and the teeth portion is made to have a curved line after the stator iron core is circularly formed.Type: ApplicationFiled: September 20, 2002Publication date: January 30, 2003Applicant: MITSUBISHI DENKI KABUSHIKI KAISHAInventors: Kouji Masumoto, Tomoaki Oikawa, Tsuneyoshi Tajima, Osamu Kazama, Masaki Kato, Toshio Arai, Takuhito Miyajima, Hiroyuki Akita
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Publication number: 20010030483Abstract: The present invention aims to provide a stator iron core of an electric motor which can eliminate the reduction of efficiency, vibration or noise of the electric motor by decreasing stress generated at a bottom portion of a slot on manufacturing or integrating the electric motor. Plural magnetic pole segments, each having a back yoke portion and a teeth portion projected from the back yoke portion, are connected so as to be bendable via a connection portion provided to the back yoke portion. After winding the coil wire, a stator iron core of the electric motor is circularly formed by bending the connection portion of the plural magnetic pole segments. In the stator iron core, the bottom portion of the slot constituted by the back yoke portion and the teeth portion is made to have a curved line after the stator iron core is circularly formed.Type: ApplicationFiled: February 16, 2001Publication date: October 18, 2001Applicant: MITSUBISHI DENKI KABUSHIKI KAISHAInventors: Kouji Masumoto, Tomoaki Oikawa, Tsuneyoshi Tajima, Osamu Kazama, Masaki Kato, Toshio Arai, Takuhito Miyajima, Hiroyuki Akita
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Patent number: 3974888Abstract: A method of weighing and an apparatus therefor, wherein articles varying in unit weight are continuously weighed by a single weighing machine to classify them into three ranks, one for articles having error weights outside the allowable error limits, another for articles having error weights plus-oriented inside the allowable error limits and the other for articles having error weights minus-oriented inside the allowable error limits, said articles having error weights outside the allowable error limits being rejected, said articles having plus-oriented and minus-oriented error weights inside the allowable error limits being separately pooled and their weights or error weights being allotted to two shift registers and memorized therein in correspondence to the pooling order, and arithmetic operations for combinations of said memorized values are performed to provide a combination of weights equal or most approximate to a predetermined weight. Other merits and details of the construction will be made clear.Type: GrantFiled: August 30, 1974Date of Patent: August 17, 1976Assignee: Kabushiki Kaisha Ishida Koki SeisakusyoInventors: Katsuhiko Murakami, Tetsuo Ikeda, Masahiro Takeda, Osamu Kazama, Hidaka Nishinaka