Patents by Inventor Kunio Morisawa
Kunio Morisawa 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: 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: 9991760Abstract: A vehicular drive system is provided with at least one electric motor and a helical gear portion which are accommodated within a casing formed by a plurality of casing members fixed to each other, wherein: said casing includes a first casing member to which a stator of each of said at least one electric motor is fixed, and a second casing member which is fixed to said first casing member so as to cooperate with said first casing member to form a space accommodating said at least one electric motor and which has a support portion supporting said helical gear portion; and a rotor of said each electric motor is rotatably supported at opposite ends thereof by said first casing member and said second casing member, respectively, while said helical gear portion is rotatably supported by said second casing member through said support portion.Type: GrantFiled: July 19, 2011Date of Patent: June 5, 2018Assignee: Toyota Jidosha Kabushiki KaishaInventors: Tatsuo Obata, Kunio Morisawa, Tsuyoshi Kitahata, Takeshi Kuwahara, Hiromichi Kimura, Masahiro Tanae, Toru Saitou
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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: 8881883Abstract: A park lock of a transmission, including a park gear; a park pawl rotating about a pawl shaft, the park pawl having a pawl portion locking the park gear, the park pawl including a cam contact portion; a park rod responsive to an operation of a controller, the park rod having a cam portion pressing the cam contact portion to have park pawl engage the park gear; a park sleeve receiving the cam portion and defining a first contact point providing a reactive force to the cam contact portion of the park pawl pressing against the cam portion at a second contact point; a pawl torsional spring biasing the park pawl towards disengagement; and a pawl stopper limiting the rotation of the park pawl wherein motions are constrained within a plane of the transmission and components are rotatingly disposed in parallel axis bores in one half of a transmission case.Type: GrantFiled: April 30, 2012Date of Patent: November 11, 2014Assignees: Tesla Motors, Inc., Toyota Motor Engineering & Manufacturing North America, Inc.Inventors: Augusto E. Barton, William Randall Fong, Gary Allen Pinkley, Edwin Marcum Pearce, Jr., Kunio Morisawa, Kazunori Kaneko, Koichi Tanaka
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Publication number: 20140285045Abstract: A vehicular drive system is provided with at least one electric motor and a bevel gear portion which are accommodated within a casing formed by a plurality of casing members fixed to each other, wherein: said casing includes a first casing member to which a stator of each of said at least one electric motor is fixed, and a second casing member which is fixed to said first casing member so as to cooperate with said first casing member to form a space accommodating said at least one electric motor and which has a support portion supporting said bevel gear portion; and a rotor of said each electric motor is rotatably supported at opposite ends thereof by said first casing member and said second casing member, respectively, while said bevel gear portion is rotatably supported by said second casing member through said support portion.Type: ApplicationFiled: July 19, 2011Publication date: September 25, 2014Inventors: Tatsuo Obata, Kunio Morisawa, Tsuyoshi Kitahata, Takeshi Kuwahara, Hiromichi Kimura, Masahiro Tanae, Toru Saitou
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Patent number: 8668067Abstract: A vehicle parking lock device having a parking rod; a tapered parking cam disposed at a leading end portion of the parking rod; and a cam guiding device that guides the parking cam moved together with the parking rod in association with a projection of the parking rod toward the leading end portion to move a parking lock pole with the parking cam to a position of engagement with a parking lock gear rotated together with a transmission output member, the cam guiding device including a first guiding member in a cylindrical shape and a second guiding member in a half cylindrical shape that is disposed subsequently to the first guiding member, the second guiding member having a tapered guiding concave surface that guides the parking cam toward the parking lock pole in association with the projection of the parking rod toward the leading end portion.Type: GrantFiled: August 27, 2009Date of Patent: March 11, 2014Assignee: Toyota Jidosha Kabushiki KaishaInventors: Kunio Morisawa, Shigetsugu Iwata, Takuya Kodama, Takafumi Koshida
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Publication number: 20130284559Abstract: A park lock of a transmission, including a park gear; a park pawl rotating about a pawl shaft, the park pawl having a pawl portion locking the park gear, the park pawl including a cam contact portion; a park rod responsive to an operation of a controller, the park rod having a cam portion pressing the cam contact portion to have park pawl engage the park gear; a park sleeve receiving the cam portion and defining a first contact point providing a reactive force to the cam contact portion of the park pawl pressing against the cam portion at a second contact point; a pawl torsional spring biasing the park pawl towards disengagement; and a pawl stopper limiting the rotation of the park pawl wherein motions are constrained within a plane of the transmission and components are rotatingly disposed in parallel axis bores in one half of a transmission case.Type: ApplicationFiled: April 30, 2012Publication date: October 31, 2013Applicants: Toyota Motor Engineering & Manufacturing North America, Inc., TESLA MOTORS, INC.Inventors: Augusto E. Barton, William Randall Fong, Gary Allen Pinkley, Edwin Marcum Pearce, JR., Kunio Morisawa, Kazunori Kaneko, Koichi Tanaka
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Patent number: 8267223Abstract: In a drive assembly of the invention, a first catch tank is provided above a casing that keeps lubricating oil accumulated in a bottom thereof for immersion of part of a rotor of a motor MG3 and of part of a differential ring gear of a differential gear. The first catch tank temporarily keeps the lubricating oil scooped up from the bottom of the casing by the rotation of the differential ring gear. The lubricating oil kept in the first catch tank is flowed down by the force of gravity and is fed to peripheral bearings. A second catch tank is arranged to temporarily keep the lubricating oil scooped up from the bottom of the casing by the rotation of the rotor of the motor MG3. The lubricating oil kept in the second catch tank is flowed down by the force of gravity and is fed to peripheral bearings.Type: GrantFiled: July 25, 2006Date of Patent: September 18, 2012Assignee: Toyota Jidosha Kabushiki KaishaInventors: Yukihiko Ideshio, Shuji Nagano, Kunio Morisawa, Hiroki Maki, Koichi Okuda
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Publication number: 20120168275Abstract: A vehicle parking lock device having a parking rod; a tapered parking cam disposed at a leading end portion of the parking rod; and a cam guiding device that guides the parking cam moved together with the parking rod in association with a projection of the parking rod toward the leading end portion to move a parking lock pole with the parking cam to a position of engagement with a parking lock gear rotated together with a transmission output member, the cam guiding device including a first guiding member in a cylindrical shape and a second guiding member in a half cylindrical shape that is disposed subsequently to the first guiding member, the second guiding member having a tapered guiding concave surface that guides the parking cam toward the parking lock pole in association with the projection of the parking rod toward the leading end portion.Type: ApplicationFiled: August 27, 2009Publication date: July 5, 2012Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Kunio Morisawa, Shigetsugu Iwata, Takuya Kodama, Takafumi Koshida
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Publication number: 20080128208Abstract: In a drive assembly of the invention, a first catch tank is provided above a casing that keeps lubricating oil accumulated in a bottom thereof for immersion of part of a rotor of a motor MG3 and of part of a differential ring gear of a differential gear. The first catch tank temporarily keeps the lubricating oil scooped up from the bottom of the casing by the rotation of the differential ring gear. The lubricating oil kept in the first catch tank is flowed down by the force of gravity and is fed to peripheral bearings. A second catch tank is arranged to temporarily keep the lubricating oil scooped up from the bottom of the casing by the rotation of the rotor of the motor MG3. The lubricating oil kept in the second catch tank is flowed down by the force of gravity and is fed to peripheral bearings.Type: ApplicationFiled: July 25, 2006Publication date: June 5, 2008Applicant: Toyota Jidosha Kabushiki KaishaInventors: Yukihiko Ideshio, Shuji Nagano, Kunio Morisawa, Hiroki Maki, Koichi Okuda
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Patent number: 7178617Abstract: A hybrid vehicle having an engine and a motor to be controlled independently of each other for running the vehicle. This hybrid vehicle is given a braking demand detecting function to detect a braking demand through an idle ON of the engine while the vehicle is running, and a first braking function to suppress the rise in the vehicle speed of the vehicle by a regenerative braking force of the motor if the braking demand is detected by the braking demand detecting function.Type: GrantFiled: October 26, 2001Date of Patent: February 20, 2007Assignee: Toyota Jidosha Kabushiki KaishaInventors: Kunio Morisawa, Tatsuya Ozeki
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Patent number: 7048671Abstract: The invention relates to a control device for an engine able to control at least one of an intake valve and an exhaust valve via a driving mechanism actuated without a torque from an output shaft of the engine, and a transmission connected to the engine. The control device includes a torque transmitting device for reducing the torque from the engine while that torque is being transmitted to an output shaft of the transmission, and control means for controlling the torque transmitting device so as to reduce the torque transmitted from the engine to the output shaft of the transmission during an upshift, controlling a engine speed to a target speed after shifting during the unshift, and controlling the torque transmitting device so as to increase the torque transmitted to the output shaft of the transmission after the engine speed is synchronized with the speed after shifting.Type: GrantFiled: September 19, 2002Date of Patent: May 23, 2006Assignee: Toyota Jidosha Kabushiki KaishaInventors: Kunio Morisawa, Toshinari Ogawa, Naoki Moriguchi, Tadashi Tamura, Tadayuki Nagai, Makoto Ogiso, Keiji Yoeda, Hideyuki Nishida
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Publication number: 20040214687Abstract: The invention relates to a control device for an engine able to control at least one of an intake valve and an exhaust valve via a driving mechanism actuated without a torque from an output shaft of the engine, and a transmission connected to the engine. The control device includes a torque transmitting device for reducing the torque from the engine while that torque is being transmitted to an output shaft of the transmission, and control means for controlling the torque transmitting device so as to reduce the torque transmitted from the engine to the output shaft of the transmission during an upshift, controlling a engine speed to a target speed after shifting during the unshift, and controlling the torque transmitting device so as to increase the torque transmitted to the output shaft of the transmission after the engine speed is synchronized with the speed after shifting.Type: ApplicationFiled: April 9, 2004Publication date: October 28, 2004Inventors: Kunio Morisawa, Toshinari Ogawa, Naoki Moriguchi, Tadashi Tamura, Tadayuki Nagai, Makoto Ogiso, Keiji Yoeda, Hideyuki Nishida
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Patent number: 6672981Abstract: A shift control apparatus for controlling a continuously variable transmission device including a continuously variable transmission mechanism having rotary elements and operable to transmit a rotary motion of a drive power source of an automotive vehicle to a drive wheel of the automotive vehicle, such that a speed ratio of said mechanism is continuously variable, the shift control apparatus includes a power-transmission-state determining device for determining whether the mechanism is placed in a non-power-transmitting state, a speed-ratio determining device for determining whether the mechanism is placed in a lowest-speed position, a rotation-stop detecting device for determining whether the rotary elements are at rest, and a compulsory-speed-ratio-change implementing device for effecting a compulsory shift-down action of the mechanism toward the lowest-speed position when the mechanism is placed in the non-power-transmitting state while the mechanism is not placed in the lowest-speed position and while thType: GrantFiled: November 19, 2001Date of Patent: January 6, 2004Assignee: Toyota Jidosha Kabushiki KaishaInventors: Daisuke Inoue, Masami Sugaya, Hideki Yasue, Kunio Morisawa, Katsumi Kono, Tadashi Tamura, Ryoji Habuchi, Hiroji Taniguchi, Kenji Matsuo
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Patent number: 6615940Abstract: A control system of a vehicle including a fuel cell and an electric motor that drives drive wheels of the vehicle with electric energy generated by the fuel cell is provided wherein a traction controller controls the output of the drive wheels so as to secure tractive force of the vehicle when a certain traction control start condition is satisfied.Type: GrantFiled: December 15, 2000Date of Patent: September 9, 2003Assignee: Toyota Jidosha Kabushiki KaishaInventor: Kunio Morisawa
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Patent number: 6540035Abstract: A hybrid vehicle including: an engine and a motor-generator for outputting drive forces to run a vehicle; and a brake pedal for applying a braking force to the running vehicle. While an engine braking force is being established, it is detected that the brake pedal is depressed. After this depression of the brake pedal, the vehicle speed is detected so that the regenerative braking is effected by the motor generator on the basis of the detected vehicle speed.Type: GrantFiled: March 9, 2000Date of Patent: April 1, 2003Assignee: Toyota Jidosha Kabushiki KaishaInventors: Shuji Nagano, Kunio Morisawa
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Patent number: 6484832Abstract: An apparatus for controlling an automotive vehicle having a primary drive power source and an auxiliary drive power source. The apparatus includes a controller adapted to control the auxiliary drive power source such that an assisting drive torque which is generated by the auxiliary drive power source and applied to the vehicle in addition to a primary drive torque generated by the primary drive power source increases with an increase of a required output of the vehicle desired by the vehicle operator, and such that the auxiliary drive power source is operated for a length of time which decreases with the increase of the required output of the vehicle.Type: GrantFiled: August 7, 2000Date of Patent: November 26, 2002Assignee: Toyota Jidosha Kabushiki KaishaInventors: Kunio Morisawa, Eiji Ichioka
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Publication number: 20020072441Abstract: A shift control apparatus for controlling a continuously variable transmission device including a continuously variable transmission mechanism having rotary elements and operable to transmit a rotary motion of a drive power source of an automotive vehicle to a drive wheel of the automotive vehicle, such that a speed ratio of said mechanism is continuously variable, the shift control apparatus includes a power-transmission-state determining device for determining whether the mechanism is placed in a non-power-transmitting state, a speed-ratio determining device for determining whether the mechanism is placed in a lowest-speed position, a rotation-stop detecting device for determining whether the rotary elements are at rest, and a compulsory-speed-ratio-change implementing device for effecting a compulsory shift-down action of the mechanism toward the lowest-speed position when the mechanism is placed in the non-power-transmitting state while the mechanism is not placed in the lowest-speed position and while thType: ApplicationFiled: November 19, 2001Publication date: June 13, 2002Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Daisuke Inoue, Masami Sugaya, Hideki Yasue, Kunio Morisawa, Katsumi Kono, Tadashi Tamura, Ryoji Habuchi, Hiroji Taniguchi, Kenji Matsuo
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Publication number: 20020023789Abstract: A hybrid vehicle having an engine and a motor to be controlled independently of each other for running the vehicle. This hybrid vehicle is given a braking demand detecting function to detect a braking demand through an idle ON of the engine while the vehicle is running, and a first braking function to suppress the rise in the vehicle speed of the vehicle by a regenerative braking force of the motor if the braking demand is detected by the braking demand detecting function.Type: ApplicationFiled: October 26, 2001Publication date: February 28, 2002Applicant: Toyota Jidosha Kabushiki KaishaInventors: Kunio Morisawa, Tatsuya Ozeki
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Publication number: 20020007974Abstract: A hybrid vehicle including: an engine and a motor-generator for outputting drive forces to run a vehicle; and a brake pedal for applying a braking force to the running vehicle. While an engine braking force is being established, it is detected that the brake pedal is depressed. After this depression of the brake pedal, the vehicle speed is detected so that the regenerative braking is effected by the motor generator on the basis of the detected vehicle speed.Type: ApplicationFiled: March 9, 2000Publication date: January 24, 2002Applicant: Shuji NaganoInventors: Shuji Nagano, Kunio Morisawa