Patents by Inventor Takumi Maeda

Takumi Maeda 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: 20220234011
    Abstract: Provided is an intensifier capable of cleaning a portion where pressurized raw material adheres without disassembling the inside. The intensifier for pressurizing raw material using medium supplied from a driving pump including: a low-pressure cylinder to which the medium is supplied; a high-pressure cylinder fixed to the low-pressure cylinder; a piston that slides inside the low-pressure cylinder and the high-pressure cylinder by the medium supplied to the low-pressure cylinder; a bottom adapter that pivotally supports the piston; and a resin portion disposed on an inner periphery of the bottom adapter.
    Type: Application
    Filed: December 28, 2021
    Publication date: July 28, 2022
    Inventor: Takumi MAEDA
  • Publication number: 20220235771
    Abstract: A scroll compressor includes: a housing; a rotary shaft; a fixed scroll including a fixed base plate, a fixed spiral wall, and an outer peripheral wall; an orbiting scroll including an orbiting base plate and an orbiting spiral wall; a compression chamber; a suction port; a suction chamber; a discharge chamber; an oil storage chamber; and an oil supply hole. The fixed scroll includes a groove disposed at the same position as the oil supply hole or on an outer side with respect to the oil supply hole in a radial direction of the rotary shaft. At least part of the groove is configured to be closed by the orbiting base plate according to a revolution of the orbiting scroll. The oil supply hole and the groove form part of an oil supply passage that supplies oil in the oil storage chamber to the suction chamber.
    Type: Application
    Filed: January 7, 2022
    Publication date: July 28, 2022
    Applicant: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
    Inventors: Shiori YAMAMOTO, Takuro YAMASHITA, Keita JINNO, Yuya HATTORI, Takumi MAEDA
  • Patent number: 11326600
    Abstract: A scroll type compressor includes a housing, a fixed scroll cooperating with the housing to define a discharge chamber, a movable scroll cooperating with the fixed scroll to define a compression chamber, and a shaft support member cooperating with the movable scroll to define a back pressure chamber. Fluid in the compression chamber is supplied to the back pressure chamber. The back pressure chamber and the discharge chamber communicate with each chamber through a relief passage. A check valve is disposed in the relief passage, and the check valve allows the fluid to flow from the back pressure chamber to the discharge chamber, when back pressure of the back pressure chamber is higher than discharge pressure of the discharge chamber.
    Type: Grant
    Filed: March 12, 2020
    Date of Patent: May 10, 2022
    Assignee: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
    Inventors: Yuya Hattori, Takuro Yamashita, Takumi Maeda, Shinji Koike
  • Patent number: 11221008
    Abstract: A scroll compressor is provided. An orbiting angle of the orbiting scroll when the compression chamber is formed and compression of fluid is initiated is referred to as an orbiting initiation angle. An orbiting angle of the orbiting scroll when the compression of the fluid is completed is referred to as an orbiting termination angle. An orbiting angle of the orbiting scroll when an end of the orbiting spiral wall initiates contact with the arcuate portion of the fixed spiral wall before compression is completed is referred to as a distal end contact initiation angle. The formation point distance reaches a minimum value at least at one of a first orbiting angle or a second orbiting angle.
    Type: Grant
    Filed: March 25, 2020
    Date of Patent: January 11, 2022
    Assignee: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
    Inventors: Takumi Maeda, Takayuki Ota, Takuro Yamashita, Yuya Hattori, Tatsunori Tomota, Yasuhiro Kondoh, Ryou Masuda, Etsuko Hori, Yu Nozawa
  • Patent number: 11201522
    Abstract: A compressor includes a housing, a stationary block, a drive shaft, a motor mechanism, a stationary scroll, and a movable scroll. The stationary block is fixed to the housing and is arranged between the motor mechanism and the movable scroll. The motor mechanism includes a stator and a rotor. The drive shaft is provided with a balance weight. The balance weight extends in the radial direction of the drive shaft and is arranged between the stationary block and the stator. The stator includes a stator core and a coil end. The balance weight covers a part of the coil end in the radial direction and the axial direction of the drive shaft.
    Type: Grant
    Filed: December 23, 2019
    Date of Patent: December 14, 2021
    Assignee: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
    Inventors: Yuya Hattori, Takumi Maeda, Takuro Yamashita, Shinji Koike
  • Patent number: 11168688
    Abstract: A scroll compressor includes a housing, a rotary shaft, a movable scroll, an eccentric shaft, an opposed wall, a looped elastic plate, a looped support portion, an annular protrusion, a back pressure chamber, and a back pressure supplying groove. The distance in the radial direction of the rotary shaft from the rotation axis of the rotary shaft to then outer end of the back pressure supplying groove in the radial direction of the rotary shaft is shorter than or equal to the distance obtained by subtracting the distance in the radial direction of the rotary shaft between the rotation axis of the rotary shaft and the axis of the eccentric shaft from the distance in the radial direction of the rotary shaft from the axis of the eccentric shaft to the part of the protrusion that contacts the elastic plate.
    Type: Grant
    Filed: March 24, 2020
    Date of Patent: November 9, 2021
    Assignee: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
    Inventors: Shinji Koike, Takuro Yamashita, Yuya Hattori, Takumi Maeda
  • Patent number: 11078909
    Abstract: A scroll compressor includes a fixed scroll and an orbiting scroll. An orbiting angle of the orbiting scroll when a compression chamber is formed and compression of fluid is initiated is referred to as an orbiting initiation angle. An orbiting angle of the orbiting scroll when the compression of the fluid is terminated is referred to as an orbiting termination angle. An orbiting angle of the orbiting scroll when an end of the orbiting spiral wall initiates contact with an arcuate portion of the fixed spiral wall is referred to as a distal end contact initiation angle. The formation point distance is a peak in at least one of orbiting angles obtained by subtracting integer multiples of 360° from an orbiting angle in a range from the distal end contact initiation angle to the orbiting termination angle.
    Type: Grant
    Filed: March 26, 2019
    Date of Patent: August 3, 2021
    Assignee: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
    Inventors: Takumi Maeda, Takayuki Ota, Kosaku Tozawa, Takuro Yamashita, Yuya Hattori, Tatsunori Tomota, Yasuhiro Kondoh, Kazuki Shibata, Etsuko Hori, Hideyuki Suzuki, Kimihiro Fukawa
  • Patent number: 11047385
    Abstract: An electric compressor includes a housing including a motor housing, a compressor housing, and a shaft support member, which are fastened with a fastening member, and a fluid passage. The shaft support member has a fitted surface fitted onto an opening of the motor housing and a flange portion extending from the fitted surface and interposed between a first end face of the motor housing and a second end face of the compressor housing. The flange portion has a through hole through which the fastening member is inserted and a passage-forming hole through which a first recessed portion and a second recessed portion are in communication with each other. The through hole and the passage-forming hole are arranged in a circumferential direction of the flange portion. The fluid passage is formed at least by the first recessed portion, the second recessed portion, and the passage-forming hole.
    Type: Grant
    Filed: March 26, 2019
    Date of Patent: June 29, 2021
    Assignee: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
    Inventors: Takumi Maeda, Takuro Yamashita
  • Publication number: 20210062808
    Abstract: An electric compressor includes a housing, a drive shaft, a motor, a fixed scroll, a movable scroll, and a fixed block. The fixed block is fixed to the housing and disposed between the motor and the movable scroll. The motor includes a stator and a rotor. The rotor has an introduction passage that is formed through the rotor in an axial direction of the drive shaft. The drive shaft includes a balance weight that is disposed between the fixed block and the motor. The balance weight extends to a position where the balance weight covers at least a part of the introduction passage in a radial direction of the drive shaft in a view in the axial direction of the drive shaft. The balance weight is located away from the rotor by a predetermined distance in the axial direction of the drive shaft.
    Type: Application
    Filed: August 19, 2020
    Publication date: March 4, 2021
    Applicant: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
    Inventors: Yuya HATTORI, Takuro YAMASHITA, Takumi MAEDA
  • Publication number: 20210062811
    Abstract: An electric compressor includes a housing, a drive shaft, a motor, a movable scroll, and a fixed block. The fixed block is fixed to the housing and disposed between the motor and the movable scroll. The motor includes a stator and a rotor. The rotor has an introduction passage that is formed through the rotor in an axial direction of the drive shaft. The drive shaft includes a balance weight that is disposed between the fixed block and the motor and extends to a position where the balance weight covers at least a part of the introduction passage in a radial direction of the drive shaft in a view in the axial direction. The introduction passage includes a first passage located outward of the balance weight in a circumferential direction of the rotor and the drive shaft, and a second passage facing the balance weight in the axial direction.
    Type: Application
    Filed: August 19, 2020
    Publication date: March 4, 2021
    Applicant: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
    Inventors: Takuro YAMASHITA, Yuya HATTORI, Takumi MAEDA
  • Publication number: 20200309127
    Abstract: A scroll compressor includes a housing, a rotary shaft, a movable scroll, an eccentric shaft, an opposed wall, a looped elastic plate, a looped support portion, an annular protrusion, a back pressure chamber, and a back pressure supplying groove. The distance in the radial direction of the rotary shaft from the rotation axis of the rotary shaft to then outer end of the back pressure supplying groove in the radial direction of the rotary shaft is shorter than or equal to the distance obtained by subtracting the distance in the radial direction of the rotary shaft between the rotation axis of the rotary shaft and the axis of the eccentric shaft from the distance in the radial direction of the rotary shaft from the axis of the eccentric shaft to the part of the protrusion that contacts the elastic plate.
    Type: Application
    Filed: March 24, 2020
    Publication date: October 1, 2020
    Applicant: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
    Inventors: Shinji KOIKE, Takuro YAMASHITA, Yuya HATTORI, Takumi MAEDA
  • Publication number: 20200309128
    Abstract: A scroll compressor is provided. An orbiting angle of the orbiting scroll when the compression chamber is formed and compression of fluid is initiated is referred to as an orbiting initiation angle. An orbiting angle of the orbiting scroll when the compression of the fluid is completed is referred to as an orbiting termination angle. An orbiting angle of the orbiting scroll when an end of the orbiting spiral wall initiates contact with the arcuate portion of the fixed spiral wall before compression is completed is referred to as a distal end contact initiation angle. The formation point distance reaches a minimum value at least at one of a first orbiting angle or a second orbiting angle.
    Type: Application
    Filed: March 25, 2020
    Publication date: October 1, 2020
    Applicant: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
    Inventors: Takumi MAEDA, Takayuki OTA, Takuro YAMASHITA, Yuya HATTORI, Tatsunori TOMOTA, Yasuhiro KONDOH, Ryou MASUDA, Etsuko HORI, Yu NOZAWA
  • Publication number: 20200309126
    Abstract: A scroll type compressor includes a housing, a fixed scroll cooperating with the housing to define a discharge chamber, a movable scroll cooperating with the fixed scroll to define a compression chamber, and a shaft support member cooperating with the movable scroll to define a back pressure chamber. Fluid in the compression chamber is supplied to the back pressure chamber. The back pressure chamber and the discharge chamber communicate with each chamber through a relief passage. A check valve is disposed in the relief passage, and the check valve allows the fluid to flow from the back pressure chamber to the discharge chamber, when back pressure of the back pressure chamber is higher than discharge pressure of the discharge chamber.
    Type: Application
    Filed: March 12, 2020
    Publication date: October 1, 2020
    Applicant: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
    Inventors: Yuya HATTORI, Takuro Yamashita, Takumi Maeda, Shinji Koike
  • Publication number: 20200212760
    Abstract: A compressor includes a housing, a stationary block, a drive shaft, a motor mechanism, a stationary scroll, and a movable scroll. The stationary block is fixed to the housing and is arranged between the motor mechanism and the movable scroll. The motor mechanism includes a stator and a rotor. The drive shaft is provided with a balance weight. The balance weight extends in the radial direction of the drive shaft and is arranged between the stationary block and the stator. The stator includes a stator core and a coil end. The balance weight covers a part of the coil end in the radial direction and the axial direction of the drive shaft.
    Type: Application
    Filed: December 23, 2019
    Publication date: July 2, 2020
    Applicant: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
    Inventors: Yuya HATTORI, Takumi MAEDA, Takuro YAMASHITA, Shinji KOIKE
  • Publication number: 20190301459
    Abstract: An electric compressor includes a housing including a motor housing, a compressor housing, and a shaft support member, which are fastened with a fastening member, and a fluid passage. The shaft support member has a fitted surface fitted onto an opening of the motor housing and a flange portion extending from the fitted surface and interposed between a first end face of the motor housing and a second end face of the compressor housing. The flange portion has a through hole through which the fastening member is inserted and a passage-forming hole through which a first recessed portion and a second recessed portion are in communication with each other. The through hole and the passage-forming hole are arranged in a circumferential direction of the flange portion. The fluid passage is formed at least by the first recessed portion, the second recessed portion, and the passage-forming hole.
    Type: Application
    Filed: March 26, 2019
    Publication date: October 3, 2019
    Applicant: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
    Inventors: Takumi MAEDA, Takuro YAMASHITA
  • Publication number: 20190301460
    Abstract: A scroll compressor includes a fixed scroll and an orbiting scroll. An orbiting angle of the orbiting scroll when a compression chamber is formed and compression of fluid is initiated is referred to as an orbiting initiation angle. An orbiting angle of the orbiting scroll when the compression of the fluid is terminated is referred to as an orbiting termination angle. An orbiting angle of the orbiting scroll when an end of the orbiting spiral wall initiates contact with an arcuate portion of the fixed spiral wall is referred to as a distal end contact initiation angle. The formation point distance is a peak in at least one of orbiting angles obtained by subtracting integer multiples of 360° from an orbiting angle in a range from the distal end contact initiation angle to the orbiting termination angle.
    Type: Application
    Filed: March 26, 2019
    Publication date: October 3, 2019
    Applicant: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
    Inventors: Takumi MAEDA, Takayuki OTA, Kosaku TOZAWA, Takuro YAMASHITA, Yuya HATTORI, Tatsunori TOMOTA, Yasuhiro KONDOH, Kazuki SHIBATA, Etsuko HORI, Hideyuki SUZUKI, Kimihiro FUKAWA
  • Patent number: 4554362
    Abstract: Bis-crown-ether derivatives having such configuration that the two crown rings may easily overlap spatially, holding a potassium or the like ion between them, and ion-selective membranes used for said bis-crown-ether derivatives as neutral carrier, which are useful as an ion sensor and are superior to the ion-selective membrane containing valinomycin.
    Type: Grant
    Filed: March 4, 1985
    Date of Patent: November 19, 1985
    Assignee: Shimadzu Corporation
    Inventors: Toshiyuki Shono, Keiichi Kimura, Takumi Maeda
  • Patent number: 4523994
    Abstract: Bis-crown-ether derivatives having such configuration that the two crown rings may easily overlap spatially, holding a potassium or the like ion between them, and ion-selective membranes used for said bis-crown-ether derivatives as neutral carrier, which are useful as an ion sensor and are superior to the ion-selective membrane containing valinomycin.
    Type: Grant
    Filed: June 28, 1983
    Date of Patent: June 18, 1985
    Assignee: Shimadzu Corporation
    Inventors: Toshiyuki Shono, Keiichi Kimura, Takumi Maeda