Patents by Inventor Masanao Kagami
Masanao Kagami 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: 9765791Abstract: To provide a turbo compressor rotatable at high speed that is capable of being downsized, and of being suppressed in performance deterioration at low speed rotation. A turbo compressor includes a housing, a rotating shaft, a motor, a compressor mechanism, and a support section. The support section includes at least three rollers on the rotating shaft, roller shaft portions on the rollers, and a roller bearing portion for supporting the roller shaft portions. The rollers and the rotating shaft respectively have a drive transmission portion for drive transmission from the rotating shaft to each of the rollers, and the drive transmission portion of the rollers has a diameter larger than a diameter of the drive transmission portion of the rotating shaft.Type: GrantFiled: March 11, 2015Date of Patent: September 19, 2017Assignee: Kabushiki Kaisha Toyota JidoshokkiInventors: Masanao Kagami, Ryo Umeyama, Ryosuke Fukuyama
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Publication number: 20150260194Abstract: To provide a turbo compressor rotatable at high speed that is capable of being downsized, and of being suppressed in performance deterioration at low speed rotation. A turbo compressor includes a housing, a rotating shaft, a motor, a compressor mechanism, and a support section. The support section includes at least three rollers on the rotating shaft, roller shaft portions on the rollers, and a roller bearing portion for supporting the roller shaft portions. The rollers and the rotating shaft respectively have a drive transmission portion for drive transmission from the rotating shaft to each of the rollers, and the drive transmission portion of the rollers has a diameter larger than a diameter of the drive transmission portion of the rotating shaft.Type: ApplicationFiled: March 11, 2015Publication date: September 17, 2015Inventors: Masanao Kagami, Ryo Umeyama, Ryosuke Fukuyama
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Publication number: 20140287865Abstract: A rotating electric machine includes a rotor having a cylindrical peripheral wall having a permanent magnet arranged circumferentially therein, and a stator provided on an outer side of the peripheral wall of the rotor. Further, the rotating electric machine includes a planetary roller provided in a planetary roller mechanism chamber on an inner side of the peripheral wall of the rotor so as to be rotated by a rotation of the rotor transmitted from the peripheral wall to a planetary roller surface of the planetary roller, an output shaft provided on the inner side of the peripheral wall of the rotor so as to be rotated by a rotation of the planetary roller transmitted to the output shaft via the planetary roller surface, and magnetic lubricating oil included in the inner side of the peripheral wall of the rotor.Type: ApplicationFiled: March 21, 2014Publication date: September 25, 2014Applicant: KABUSHIKI KAISHA TOYOTA JIDOSHOKKIInventors: Ryosuke FUKUYAMA, Ryo UMEYAMA, Masanao KAGAMI, Kazuho YAMADA
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Publication number: 20140210293Abstract: A permanent magnet embedded type rotating electrical machine includes a rotor includes a rotor core formed by a plurality of laminated magnetic steel plates and a plurality of permanent magnets and a stator. Each magnetic steel plate has a plurality of pairs of magnet holes, pairs of joining portions and peninsula portions. The magnet holes of each pair are disposed at positions adjacent to an outer periphery of the magnetic steel plate so as to form a V-shape that is divergent toward the outer periphery. The joining portion is configured to connect the magnet hole with a circumference of the peninsula portion. A distance between a center of the rotor core and at least one of a pair of ends of the circumference of the peninsula portion is smaller than a distance between the center and an intersection of a d-axis of the rotor and the circumference.Type: ApplicationFiled: January 16, 2014Publication date: July 31, 2014Applicant: KABUSHIKI KAISHA TOYOTA JIDOSHOKKIInventors: Masanao Kagami, Yoshiyuki Nakane, Satoru Mitsuda, Noriyuki Suzuki
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Patent number: 8766503Abstract: An accommodating recess (21A, 21B) has a magnet accommodating portion (19A, 19B) for accommodating a permanent magnet (17A, 17B) and a cavity (20A, 20B), which is located at the q-axis side of the magnet accommodating portion. The cavity opens through a rotor outer circumferential surface (162). A starting point (Pa1, Pb1) of an outer cavity forming surface (201A, 201B) is located on the rotor outer circumferential surface. The outer cavity forming surface intersects either a magnetic pole surface or an imaginary extended plane (23A, 23B) of a magnetic pole facing surface (191A, 191B). The rotor outer circumferential surface (162) includes portions of an imaginary annular line (E). A starting point (Pa1, Pb1) of the outer cavity forming surface (201A, 201B) is located between the d-axis and an intersection point (Qa, Qb) between the imaginary annular line and the imaginary extended plan of the magnetic pole facing surface.Type: GrantFiled: March 26, 2012Date of Patent: July 1, 2014Assignee: Kabushiki Kaisha Toyota JidoshokkiInventors: Masanao Kagami, Ryo Umeyama, Yoshiyuki Nakane
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Patent number: 8491279Abstract: An electric pump for supplying a hydrogen gas to a fuel cell includes a rotary shaft rotatably inserted through an electric motor, a transmitting member provided on one of an outer peripheral surface of the rotary shaft and an inner peripheral surface of the electric motor so as to be rotatable therewith, and a groove formed in the other of the outer peripheral surface of the rotary shaft and the inner peripheral surface of the electric motor for the transmitting member to be inserted therein. The groove transmits a rotary torque of the electric motor to the rotary shaft by contacting an inner surface of the groove and the transmitting member and has an opening width along a rotary direction of the rotary shaft which is larger than the width of the transmitting member. The groove and the transmitting member produce an impact torque when the electric pump is started.Type: GrantFiled: January 18, 2007Date of Patent: July 23, 2013Assignee: Kabushiki Kaisha Toyota JidoshokkiInventors: Toshiro Fujii, Fumihiro Suzuki, Yoshiyuki Nakane, Masanao Kagami, Katsutoshi Shiromaru, Hiroaki Kato
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Publication number: 20130043757Abstract: An interior permanent magnet motor includes a rotor and a stator. The rotor includes a rotor core. The rotor core is formed by laminating steel plates each including pairs of magnet insertion holes and pairs of cutouts. Each pair of magnet insertion holes includes two magnet insertion holes that are arranged in a V-shape, the wide end of which is relatively closer to the outer edge with a support portion located in between. Each pair of cutouts is formed at q-axis ends of the corresponding magnet insertion holes, and includes two cutouts connected to the outer edge of the rotor core. In a state where the permanent magnets are inserted in the magnet insertion holes, a gap is formed at a d-axis end of each magnet insertion hole.Type: ApplicationFiled: August 8, 2012Publication date: February 21, 2013Applicant: KABUSHIKI KAISHA TOYOTA JIDOSHOKKIInventors: Masanao Kagami, Yoshiyuki Nakane, Ryo Umeyama, Satoru Mitsuda, Noriyuki Suzuki
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Publication number: 20120248915Abstract: An accommodating recess (21A, 21B) has a magnet accommodating portion (19A, 19B) for accommodating a permanent magnet (17A, 17B) and a cavity (20A, 20B), which is located at the q-axis side of the magnet accommodating portion. The cavity opens through a rotor outer circumferential surface (162). A starting point (Pa1, Pb1) of an outer cavity forming surface (201A, 201B) is located on the rotor outer circumferential surface. The outer cavity forming surface intersects either a magnetic pole surface or an imaginary extended plane (23A, 23B) of a magnetic pole facing surface (191A, 191B). The rotor outer circumferential surface (162) includes portions of an imaginary annular line (E). A starting point (Pa1, Pb1) of the outer cavity forming surface (201A, 201B) is located between the d-axis and an intersection point (Qa, Qb) between the imaginary annular line and the imaginary extended plan of the magnetic pole facing surface.Type: ApplicationFiled: March 26, 2012Publication date: October 4, 2012Applicant: KABUSHIKI KAISHA TOYOTA JIDOSHOKKIInventors: Masanao KAGAMI, Ryo UMEYAMA, Yoshiyuki NAKANE
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Publication number: 20070177999Abstract: An electric pump for supplying a hydrogen gas to a fuel cell includes a rotary shaft rotatably inserted through an electric motor, a transmitting member provided on one of an outer peripheral surface of the rotary shaft and an inner peripheral surface of the electric motor so as to be rotatable therewith, and a groove formed in the other of the outer peripheral surface of the rotary shaft and the inner peripheral surface of the electric motor for the transmitting member to be inserted therein. The groove transmits a rotary torque of the electric motor to the rotary shaft by contacting an inner surface of the groove and the transmitting member and has an opening width along a rotary direction of the rotary shaft which is larger than the width of the transmitting member. The groove and the transmitting member produce an impact torque when the electric pump is started.Type: ApplicationFiled: January 18, 2007Publication date: August 2, 2007Inventors: Toshiro Fujii, Fumihiro Suzuki, Yoshiyuki Nakane, Masanao Kagami, Katsutoshi Shiromaru, Hiroaki Kato
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Patent number: 6987373Abstract: A starting system for a pump includes a driving motor, an electric source, a selector switch, a starter sensor, a temperature sensor and a control unit. The selector switch is located between the driving motor and the electric source for reversing polarity of the electric power supplied from the electric source to the driving motor. The starter sensor senses whether or not the driving motor has been started. The temperature sensor senses a temperature. The control unit operates the selector switch so as to repeatedly give the driving motor indications of reverse rotation and normal rotation in a case where the starter sensor does not sense that the driving motor has been started even if the control unit operates the selector switch so as to give the driving motor the indication of normal rotation in a state where the temperature sensed by the temperature sensor is below a preset temperature.Type: GrantFiled: November 22, 2004Date of Patent: January 17, 2006Assignee: Kabushiki Kaisha Toyota JidishokkiInventors: Masanao Kagami, Toshiro Fujii, Kazuho Yamada, Tatsuyuki Hoshino, Takayuki Hirano
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Publication number: 20050110446Abstract: A starting system for a pump includes a driving motor, an electric source, a selector switch, a starter sensor, a temperature sensor and a control unit. The selector switch is located between the driving motor and the electric source for reversing polarity of the electric power supplied from the electric source to the driving motor. The starter sensor senses whether or not the driving motor has been started. The temperature sensor senses a temperature. The control unit operates the selector switch so as to repeatedly give the driving motor indications of reverse rotation and normal rotation in a case where the starter sensor does not sense that the driving motor has been started even if the control unit operates the selector switch so as to give the driving motor the indication of normal rotation in a state where the temperature sensed by the temperature sensor is below a preset temperature.Type: ApplicationFiled: November 22, 2004Publication date: May 26, 2005Inventors: Masanao Kagami, Toshiro Fujii, Kazuho Yamada, Tatsuyuki Hoshino, Takayuki Hirano
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Publication number: 20050112424Abstract: A fuel cell system includes a fuel cell stack, a hydrogen flowing passage, an air flowing passage and a control valve. At least one of the gas flowing passages includes a bypass, a selecting means, a gas flowing means and a control unit. The bypass allows a gas to flow therethrough so as to detour the fuel cell stack and the control valve. The selecting means selects one of a passage which passes through the fuel cell stack and the bypass. The gas flowing means flows the gas to the bypass. In the control unit, the through passage is selected by the selecting means when the system is operated, The bypass is selected by the selecting means when the operation of the system is stopped. The gas is flowed to the bypass by operating the gas flowing means when the control valve is frozen thereby heating the control valve.Type: ApplicationFiled: November 19, 2004Publication date: May 26, 2005Inventors: Takayuki Hirano, Kazuho Yamada, Masanao Kagami, Toshiro Fujii, Tatsuyuki Hoshino, Katsutoshi Shiromaru
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Publication number: 20040265146Abstract: A roots compressor module has a roots compressor accommodating drive and driven rotors in a rotor chamber of a compressor housing, an electric motor arranged coaxially with the drive rotor and having a motor housing fixedly connected to the compressor housing, a first device supported on one of the compressor and motor housings, a discharge passage formed in the compressor housing and extending from a discharge side of the rotor chamber in a direction perpendicular to an axis of the drive rotor, and a communication passage connecting the discharge passage with the first device. The first device is located by a side of the electric motor, while the communication passage extends from the discharge passage toward the first device along the axial direction of the drive rotor.Type: ApplicationFiled: June 4, 2004Publication date: December 30, 2004Inventors: Masanao Kagami, Takayuki Hirano, Kazuho Yamada
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Publication number: 20020025268Abstract: A scroll compressor for a fuel a cell which vibrates little and is compact in size. The scroll compressor includes a front housing formed integrally with a stationary scroll, a center housing molded as a unitary structure coupled to the front housing and covering at least a portion of a drive crank mechanism and a portion of a drive motor, and a rear housing coupled to the center housing and covering the rear side of the drive motor. The front housing, the center housing and the rear housing form an outer shell of the compressor. The center housing that is molded as a unitary structure helps markedly increase the rigidity as a whole, and suppresses the vibration of the scroll compressor for a fuel cell.Type: ApplicationFiled: August 16, 2001Publication date: February 28, 2002Applicant: Kabushiki Kaisha Toyota Jidoshkki.Inventors: Takahiro Moroi, Kiyoshi Uetsuji, Toshiro Fujii, Masanao Kagami, Tsutomu Nasuda