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).
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Patent number: 10876616Abstract: 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: GrantFiled: February 22, 2019Date of Patent: December 29, 2020Assignees: 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
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Publication number: 20190264797Abstract: 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: ApplicationFiled: February 22, 2019Publication date: August 29, 2019Applicants: 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
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Patent number: 10094377Abstract: 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: GrantFiled: November 29, 2012Date of Patent: October 9, 2018Assignees: 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
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Patent number: 8905885Abstract: 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: GrantFiled: January 30, 2012Date of Patent: December 9, 2014Assignees: Aisin Aw Co., Ltd., Toyota Jidosha Kabushiki KaishaInventors: Yoshihisa Yamamoto, Masamitsu Seno, Takuya Komatsu, Natsuki Sada, Hirotaka Yata, Tomoo Atarashi, Hiromichi Kimura, Takeshi Kuwahara, Tatsuo Obata, Michitaka Tsuchida, Yoshinori Morita, Shingo Kato
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Publication number: 20140341757Abstract: 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: ApplicationFiled: November 29, 2012Publication date: November 20, 2014Applicants: AISIN AW CO., LTD., TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Tatsuo Obata, Hiromichi Kimura, Takeshi Kuwahara, Katsuhide Kitagawa, Kunio Morisawa, Masamitsu Seno, Hirotaka Yata, Tomoo Atarashi
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Patent number: 8840511Abstract: 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: GrantFiled: January 16, 2012Date of Patent: September 23, 2014Assignees: Aisin AW Co., Ltd., Toyota Jiddosha Kabushiki KaishaInventors: Masamitsu Seno, Hirotaka Yata, Natsuki Sada, Takuya Komatsu, Tomoo Atarashi, Michinobu Suzuki, Hiromichi Kimura, Michitaka Tsuchida
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Publication number: 20130305878Abstract: 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: ApplicationFiled: January 16, 2012Publication date: November 21, 2013Applicants: 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
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Publication number: 20130283972Abstract: 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: ApplicationFiled: January 30, 2012Publication date: October 31, 2013Applicants: 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
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Publication number: 20100123292Abstract: 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: ApplicationFiled: November 20, 2009Publication date: May 20, 2010Applicants: Toyota Jidosha Kabushiki Kaisha, Aisin AW Co., Ltd., Nok CorporationInventors: Masamitsu Seno, Yutaka Hotta, Shuji Yoshitsune