Patents by Inventor Masamitsu Seno

Masamitsu Seno 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).

  • Patent number: 10876616
    Abstract: In a power transmission device for a vehicle, comprising: a transaxle casing in which a motor and a voltage power line are housed; and a cover attached so as to close an opening of the transaxle casing, the cover includes a flange portion provided at an outer edge portion of the cover and connected to the opening of the transaxle casing, a bearing support portion for a bearing that supports a rotary shaft rotatably, and a cover wall provided between the flange portion and the bearing support portion, and a valve body is attached to the cover wall so as to be positioned at a portion of the cover wall at which a direct distance between the bearing support portion and the flange portion surrounding the bearing support portion is longest.
    Type: Grant
    Filed: February 22, 2019
    Date of Patent: December 29, 2020
    Assignees: Toyota Jidosha Kabushiki Kaisha, Aisin AW Co., Ltd.
    Inventors: Masataka Sugiyama, Kenji Tanabe, Takeshi Kuwahara, Tomohisa Taga, Akihiko Ikeda, Fumiaki Shigematsu, Atomi Arakawa, Masamitsu Seno
  • Publication number: 20190264797
    Abstract: In a power transmission device for a vehicle, comprising: a transaxle casing in which a motor and a voltage power line are housed; and a cover attached so as to close an opening of the transaxle casing, the cover includes a flange portion provided at an outer edge portion of the cover and connected to the opening of the transaxle casing, a bearing support portion for a bearing that supports a rotary shaft rotatably, and a cover wall provided between the flange portion and the bearing support portion, and a valve body is attached to the cover wall so as to be positioned at a portion of the cover wall at which a direct distance between the bearing support portion and the flange portion surrounding the bearing support portion is longest.
    Type: Application
    Filed: February 22, 2019
    Publication date: August 29, 2019
    Applicants: Toyota Jidosha Kabushiki Kaisha, Aisin AW Co., Ltd.
    Inventors: Masataka SUGIYAMA, Kenji TANABE, Takeshi KUWAHARA, Tomohisa TAGA, Akihiko IKEDA, Fumiaki SHIGEMATSU, Atomi ARAKAWA, Masamitsu SENO
  • Patent number: 10094377
    Abstract: An oil pump for a vehicle includes a driven gear, a drive gear, a pump body, and a plate. The drive gear engages the driven gear. The pump body is secured to a rear cover of a transaxle case. The plate is interposed between the rear cover and the pump body. A pump chamber is formed between the rear cover and the pump body. The driven gear and the drive gear are housed in the pump chamber. The pump chamber is formed: between the plate and the pump body, or between the plate and the rear cover.
    Type: Grant
    Filed: November 29, 2012
    Date of Patent: October 9, 2018
    Assignees: TOYOTA JIDOSHA KABUSHIKI KAISHA, AISIN AW CO., LTD.
    Inventors: Tatsuo Obata, Hiromichi Kimura, Takeshi Kuwahara, Katsuhide Kitagawa, Kunio Morisawa, Masamitsu Seno, Hirotaka Yata, Tomoo Atarashi
  • Patent number: 8905885
    Abstract: A vehicle drive device configured with reduced axial dimensions, while still having appropriate lubrication. The vehicle drive device is configured with an input shaft coupled to an engine, a rotary electric machine, and an output shaft coupled to wheels. A power transfer mechanism couples input shaft, the rotary electric machine, and the output shaft. A case houses at least the rotary electric machine and the power transfer mechanism. An oil reserving portion capable of reserving oil supplied by rotation of the power transfer mechanism is provided above the rotor shaft inside the case. A communication oil passage is oriented between the oil reserving portion and an inner circumferential space formed inside the rotor shaft. The rotor shaft is disposed to be inserted into the inside housing space, and has a supply communication hole that communicates between the inner circumferential space and the inside housing space.
    Type: Grant
    Filed: January 30, 2012
    Date of Patent: December 9, 2014
    Assignees: Aisin Aw Co., Ltd., Toyota Jidosha Kabushiki Kaisha
    Inventors: Yoshihisa Yamamoto, Masamitsu Seno, Takuya Komatsu, Natsuki Sada, Hirotaka Yata, Tomoo Atarashi, Hiromichi Kimura, Takeshi Kuwahara, Tatsuo Obata, Michitaka Tsuchida, Yoshinori Morita, Shingo Kato
  • Publication number: 20140341757
    Abstract: A plate is interposed between a rear cover and a pump body. The pump chamber is formed between the plate and the pump body.
    Type: Application
    Filed: November 29, 2012
    Publication date: November 20, 2014
    Applicants: AISIN AW CO., LTD., TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Tatsuo Obata, Hiromichi Kimura, Takeshi Kuwahara, Katsuhide Kitagawa, Kunio Morisawa, Masamitsu Seno, Hirotaka Yata, Tomoo Atarashi
  • Patent number: 8840511
    Abstract: A vehicle drive device configured with an input member coupled to an internal combustion engine, a rotary electric machine, an output member coupled to wheels, and a power transfer mechanism that drivably couples the input member, the rotary electric machine, and the output member. An oil collecting portion is configured to collect oil supplied by rotation of the power transfer mechanism, The collected oil falling passage is configured to cause the oil collected by the oil collecting portion to flow downward to be supplied to a portion of a facing wall surface located above a cylindrical member. A communication oil passage communicates between the gap and the inside housing space is formed at a portion of abutment between the subject support bearing and the support projecting portion.
    Type: Grant
    Filed: January 16, 2012
    Date of Patent: September 23, 2014
    Assignees: Aisin AW Co., Ltd., Toyota Jiddosha Kabushiki Kaisha
    Inventors: Masamitsu Seno, Hirotaka Yata, Natsuki Sada, Takuya Komatsu, Tomoo Atarashi, Michinobu Suzuki, Hiromichi Kimura, Michitaka Tsuchida
  • Publication number: 20130305878
    Abstract: A vehicle drive device configured with an input member coupled to an internal combustion engine, a rotary electric machine, an output member coupled to wheels, and a power transfer mechanism that drivably couples the input member, the rotary electric machine, and the output member. An oil collecting portion is configured to collect oil supplied by rotation of the power transfer mechanism, The collected oil falling passage is configured to cause the oil collected by the oil collecting portion to flow downward to be supplied to a portion of a facing wall surface located above a cylindrical member. A communication oil passage communicates between the gap and the inside housing space is formed at a portion of abutment between the subject support bearing and the support projecting portion.
    Type: Application
    Filed: January 16, 2012
    Publication date: November 21, 2013
    Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, AISIN AW CO., LTD.
    Inventors: Masamitsu Seno, Hirotaka Yata, Natsuki Sada, Takuya Komatsu, Tomoo Atarashi, Michinobu Suzuki, Hiromichi Kimura, Michitaka Tsuchida
  • Publication number: 20130283972
    Abstract: A vehicle drive device configured with reduced axial dimensions, while still having appropriate lubrication. The vehicle drive device is configured with an input shaft coupled to an engine, a rotary electric machine, and an output shaft coupled to wheels. A power transfer mechanism couples input shaft, the rotary electric machine, and the output shaft. A case houses at least the rotary electric machine and the power transfer mechanism. An oil reserving portion capable of reserving oil supplied by rotation of the power transfer mechanism is provided above the rotor shaft inside the case. A communication oil passage is oriented between the oil reserving portion and an inner circumferential space formed inside the rotor shaft. The rotor shaft is disposed to be inserted into the inside housing space, and has a supply communication hole that communicates between the inner circumferential space and the inside housing space.
    Type: Application
    Filed: January 30, 2012
    Publication date: October 31, 2013
    Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, AISIN AW CO., LTD.
    Inventors: Yoshihisa Yamamoto, Masamitsu Seno, Takuya Komatsu, Natsuki Sada, Hirotaka Yata, Tomoo Atarashi, Hiromichi Kimura, Takeshi Kuwahara, Tatsuo Obata, Michitaka Tsuchida, Yoshinori Morita, Shingo Kato
  • Publication number: 20100123292
    Abstract: A gasket has an annular metallic frame, and a seal portion made of an elastic material which extends annularly along an inner peripheral portion of the metallic frame, and which is connected to the metallic frame. The metallic frame has a penetration hole through which a shaft portion of a bolt that fastens two surfaces of an appliance that faces each other penetrates, and a seat surface-corresponding portion that is formed around the penetration hole, and that corresponds to a seat surface of the bolt.
    Type: Application
    Filed: November 20, 2009
    Publication date: May 20, 2010
    Applicants: Toyota Jidosha Kabushiki Kaisha, Aisin AW Co., Ltd., Nok Corporation
    Inventors: Masamitsu Seno, Yutaka Hotta, Shuji Yoshitsune