Patents by Inventor Satoru Mitsuda
Satoru Mitsuda 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: 11473585Abstract: A transmission includes a transmission housing member, a ring portion, a high speed shaft, a third roller, and a third plate bearing, which rotatably supports the third roller. The transmission housing member includes a first supporting surface, which restricts the third roller to a first position, and a second supporting surface, which restricts the third roller to a second position. The third roller is moved within a movement range from the first position to the second position. The movement range includes a specified range in which the third roller is not supported, in a radial direction of the high speed shaft, by the transmission housing member with the third plate bearing in between, but is supported by being held between the ring portion and the high speed shaft.Type: GrantFiled: December 2, 2021Date of Patent: October 18, 2022Assignee: KABUSHIKI KAISHA TOYOTA JIDOSHOKKIInventors: Ryosuke Fukuyama, Kaho Takeuchi, Yoshiyuki Nakane, Hiroaki Kato, Satoru Mitsuda, Shogo Ito, Yohei Takase, Daisuke Watanabe, Ryo Umeyama, Noriyuki Suzuki
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Patent number: 11448234Abstract: First and second pressure relief passages extend from an oil pan in a branching manner, and merge with each other to form a merging portion. A pressure relief hole is arranged above the merging portion, and a first pressure relief passage is arranged below the merging portion. The minimum cross-sectional area of the second pressure relief passage is smaller than the minimum cross-sectional area of the first pressure relief passage. The second pressure relief passage includes a bent portion formed by bending the second pressure relief passage. The bent portion is configured to perform gas/liquid separation by crushing bubbles. When reaching the merging portion from the bent portion, oil is returned to the oil pan via the first pressure relief passage. When reaching the merging portion from the bent portion, gas is discharged to the outside of the housing via the pressure relief hole.Type: GrantFiled: April 23, 2021Date of Patent: September 20, 2022Assignee: KABUSHIKI KAISHA TOYOTA JIDOSHOKKIInventors: Yohei Takase, Yoshiyuki Nakane, Satoru Mitsuda, Hiroaki Kato, Ryosuke Fukuyama, Daisuke Watanabe, Kaho Takeuchi
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Publication number: 20220178378Abstract: A transmission includes a transmission housing member, a ring portion, a high speed shaft, a third roller, and a third plate bearing, which rotatably supports the third roller. The transmission housing member includes a first supporting surface, which restricts the third roller to a first position, and a second supporting surface, which restricts the third roller to a second position. The third roller is moved within a movement range from the first position to the second position. The movement range includes a specified range in which the third roller is not supported, in a radial direction of the high speed shaft, by the transmission housing member with the third plate bearing in between, but is supported by being held between the ring portion and the high speed shaft.Type: ApplicationFiled: December 2, 2021Publication date: June 9, 2022Applicant: KABUSHIKI KAISHA TOYOTA JIDOSHOKKIInventors: Ryosuke FUKUYAMA, Kaho Takeuchi, Yoshiyuki Nakane, Hiroaki Kato, Satoru Mitsuda, Shogo Ito, Yohei Takase, Daisuke Watanabe, Ryo Umeyama, Noriyuki Suzuki
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Patent number: 11286944Abstract: An oil passage of a centrifugal compressor includes a first oil passage that communicates with an oil pan and a speed increaser chamber to supply oil to a speed increaser and the seal. A second oil passage communicates with the speed increaser chamber. A third oil passage extends upward in a gravitational direction from an end of the second oil passage. A fourth oil passage extends in a horizontal direction and causes the oil pan and an end of the third oil passage to communicate with each other. A pressure relief passage that communicates with an outside is arranged in at least one of a portion of the fourth oil passage through which a gas layer passes and a portion of the oil pan in which the gas layer is stored.Type: GrantFiled: February 27, 2019Date of Patent: March 29, 2022Assignee: KABUSHIKI KAISHA TOYOTA JIDOSHOKKIInventors: Ryosuke Fukuyama, Takahito Kunieda, Satoru Mitsuda, Masahiro Suzuki, Ryo Umeyama, Yoshiyuki Nakane
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Patent number: 11221013Abstract: A centrifugal compressor includes a low-speed shaft, an impeller, a speed increaser, a housing, a separation wall, a shaft insertion hole, a seal member, an oil pan, an oil supply passage, an oil return passage, and a pressure reduction passage. The impeller is integrally rotated with a high-speed shaft. The housing has therein an impeller chamber accommodating the impeller and a speed increaser chamber accommodating the speed increaser. The centrifugal compressor includes a bypass passage having a first end communicating with the speed increaser chamber and a second end communicating with the oil pan.Type: GrantFiled: September 24, 2019Date of Patent: January 11, 2022Assignee: KABUSHIKI KAISHA TOYOTA JIDOSHOKKIInventors: Yoshiyuki Nakane, Takahito Kunieda, Kaho Takeuchi, Ryo Umeyama, Satoru Mitsuda, Ryosuke Fukuyama
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Publication number: 20210340993Abstract: First and second pressure relief passages extend from an oil pan in a branching manner, and merge with each other to form a merging portion. A pressure relief hole is arranged above the merging portion, and a first pressure relief passage is arranged below the merging portion. The minimum cross-sectional area of the second pressure relief passage is smaller than the minimum cross-sectional area of the first pressure relief passage. The second pressure relief passage includes a bent portion formed by bending the second pressure relief passage. The bent portion is configured to perform gas/liquid separation by crushing bubbles. When reaching the merging portion from the bent portion, oil is returned to the oil pan via the first pressure relief passage. When reaching the merging portion from the bent portion, gas is discharged to the outside of the housing via the pressure relief hole.Type: ApplicationFiled: April 23, 2021Publication date: November 4, 2021Applicant: KABUSHIKI KAISHA TOYOTA JIDOSHOKKIInventors: Yohei TAKASE, Yoshiyuki NAKANE, Satoru MITSUDA, Hiroaki KATO, Ryosuke FUKUYAMA, Daisuke WATANABE, Kaho TAKEUCHI
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Patent number: 10746191Abstract: A centrifugal compressor includes a housing, a partition separating an empty space in a housing into a speed increaser chamber and an impeller chamber, an insertion hole provided in the partition to allow insertion of a high-speed shaft, a seal located in the insertion hole to seal a boundary between the partition and the high-speed shaft, and a bearing receptacle located in the partition. The partition includes a communication passage that allows communication between a portion of the insertion hole located closer to the speed increaser chamber than the seal and the bearing receptacle.Type: GrantFiled: March 19, 2018Date of Patent: August 18, 2020Assignee: KABUSHIKI KAISHA TOYOTA JIDOSHOKKIInventors: Ryosuke Fukuyama, Satoru Mitsuda, Hiroaki Kato
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Publication number: 20200102964Abstract: A centrifugal compressor includes a low-speed shaft, an impeller, a speed increaser, a housing, a separation wall, a shaft insertion hole, a seal member, an oil pan, an oil supply passage, an oil return passage, and a pressure reduction passage. The impeller is integrally rotated with a high-speed shaft. The housing has therein an impeller chamber accommodating the impeller and a speed increaser chamber accommodating the speed increaser. The centrifugal compressor includes a bypass passage having a first end communicating with the speed increaser chamber and a second end communicating with the oil pan.Type: ApplicationFiled: September 24, 2019Publication date: April 2, 2020Applicant: KABUSHIKI KAISHA TOYOTA JIDOSHOKKIInventors: Yoshiyuki NAKANE, Takahito KUNIEDA, Kaho TAKEUCHI, Ryo UMEYAMA, Satoru MITSUDA, Ryosuke FUKUYAMA
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Publication number: 20190277301Abstract: An oil passage of a centrifugal compressor includes a first oil passage that communicates with an oil pan and a speed increaser chamber to supply oil to a speed increaser and the seal. A second oil passage communicates with the speed increaser chamber. A third oil passage extends upward in a gravitational direction from an end of the second oil passage. A fourth oil passage extends in a horizontal direction and causes the oil pan and an end of the third oil passage to communicate with each other. A pressure relief passage that communicates with an outside is arranged in at least one of a portion of the fourth oil passage through which a gas layer passes and a portion of the oil pan in which the gas layer is stored.Type: ApplicationFiled: February 27, 2019Publication date: September 12, 2019Applicant: KABUSHIKI KAISHA TOYOTA JIDOSHOKKIInventors: Ryosuke FUKUYAMA, Takahito KUNIEDA, Satoru MITSUDA, Masahiro SUZUKI, Ryo UMEYAMA, Yoshiyuki NAKANE
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Publication number: 20180283393Abstract: A centrifugal compressor includes a housing, a partition separating an empty space in a housing into a speed increaser chamber and an impeller chamber, an insertion hole provided in the partition to allow insertion of a high-speed shaft, a seal located in the insertion hole to seal a boundary between the partition and the high-speed shaft, and a bearing receptacle located in the partition. The partition includes a communication passage that allows communication between a portion of the insertion hole located closer to the speed increaser chamber than the seal and the bearing receptacle.Type: ApplicationFiled: March 19, 2018Publication date: October 4, 2018Applicant: KABUSHIKI KAISHA TOYOTA JIDOSHOKKIInventors: Ryosuke FUKUYAMA, Satoru MITSUDA, Hiroaki KATO
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Patent number: 9982687Abstract: A compressor is provided that comprises; a compression mechanism compressing a fluid; a motor driving the compression mechanism; and a housing that houses the compression mechanism and the motor. The compressor includes a low-temperature fluid passage forming unit having a surface forming a low-temperature fluid passage in which a low-temperature fluid flows and provided in the housing so as to cool the motor, and an oil passage forming unit having a surface forming an oil passage through which oil supplied into the housing flows. At least a part of the oil passage forming unit is arranged so as to face the low-temperature fluid passage forming unit with an interposed portion interposed therebetween such that the oil is cooled by heat exchange with the low-temperature fluid.Type: GrantFiled: March 24, 2016Date of Patent: May 29, 2018Assignee: KABUSHIKI KAISHA TOYOTA JIDOSHOKKIInventors: Satoru Mitsuda, Ryo Umeyama
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Publication number: 20160281740Abstract: A compressor is provided that comprises; a compression mechanism compressing a fluid; a motor driving the compression mechanism; and a housing that houses the compression mechanism and the motor. The compressor includes a low-temperature fluid passage forming unit having a surface forming a low-temperature fluid passage in which a low-temperature fluid flows and provided in the housing so as to cool the motor, and an oil passage forming unit having a surface forming an oil passage through which oil supplied into the housing flows. At least a part of the oil passage forming unit is arranged so as to face the low-temperature fluid passage forming unit with an interposed portion interposed therebetween such that the oil is cooled by heat exchange with the low-temperature fluid.Type: ApplicationFiled: March 24, 2016Publication date: September 29, 2016Applicant: KABUSHIKI KAISHA TOYOTA JIDOSHOKKIInventors: Satoru MITSUDA, Ryo UMEYAMA
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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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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