Patents by Inventor Mutsumi Kawamoto
Mutsumi Kawamoto 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: 9948168Abstract: A manufacturing method of a stator for manufacturing a stator by mounting a concentrated winding coil wound with a square wire conductor on each of a plurality of teeth in a stator core and welding end of the concentrated winding coil to corresponding end of another concentrated winding coil, characterized in that a first set of concentrated winding coils and a second set of concentrated winding coils are mounted on the teeth, and the welding of each end in the first set of concentrated winding coils and corresponding end in the second set of concentrated winding coils is started while a third set of concentrated winding coils is mounted on the teeth.Type: GrantFiled: February 20, 2014Date of Patent: April 17, 2018Assignee: AISIN AW CO., LTD.Inventors: Mutsumi Kawamoto, Susumu Kato, Shingo Hashimoto, Takeshi Yokoyama, Hiroyuki Tanaka, Kazuya Iwatsuki, Shingo Sato
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Publication number: 20150381021Abstract: A manufacturing method of a stator for manufacturing a stator by mounting a concentrated winding coil wound with a square wire conductor on each of a plurality of teeth in a stator core and welding end of the concentrated winding coil to corresponding end of another concentrated winding coil, characterized in that a first set of concentrated winding coils and a second set of concentrated winding coils are mounted on the teeth, and the welding of each end in the first set of concentrated winding coils and corresponding end in the second set of concentrated winding coils is started while a third set of concentrated winding coils is mounted on the teeth.Type: ApplicationFiled: February 20, 2014Publication date: December 31, 2015Inventors: Mutsumi KAWAMOTO, Susumu KATO, Shingo HASHIMOTO, Takeshi YOKOYAMA, Hiroyuki TANAKA, Kazuya IWATSUKI, Shingo SATO
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Patent number: 6893373Abstract: A transmission for a vehicle includes a main transmission (M) and a differential gear mechanism (20). The main transmission has at least two rotating elements (11, 12; 13, 14) each set to a different gear ratio, and the differential gear mechanism has at least three elements (21, 22, 23). There are provided first input means (C-1, C-2) which selectively inputs an input rotation to two rotating elements of the main transmission, and second input means (1, 2, C-3; 1, 2, 4) which connects the two rotating elements to two elements (21, 22) of the differential gear mechanism and inputs the input rotation to the other at least one element (23). Since an intermediate gear ratio with respect to an individual gear ratio is generated by two rotating elements at a time of simultaneously transmitting power to two rotating elements, it is possible to increase the number of shift speeds.Type: GrantFiled: March 5, 2002Date of Patent: May 17, 2005Assignee: Aisin Aw Co., Ltd.Inventors: Mutsumi Kawamoto, Yoshimi Ishihara, Yoshinori Miyaishi, Mitsugi Yamashita, Nobuhiro Hosoi
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Publication number: 20030148847Abstract: A transmission for a vehicle mainly includes a main transmission (M) and a differential gear mechanism (20). The main transmission has at least two rotating elements (11, 12; 13, 14) each set to a different gear ratio, and the differential gear mechanism has at least three elements (21, 22, 23). There are provided first input means (C-1, C-2) which selectively inputs an input rotation to two rotating elements of the main transmission, and second input means (1, 2, C-3; 1, 2, 4) which connects the two rotating elements to two elements (21, 22) of the differential gear mechanism and inputs the input rotation to the other at least one element (23).Type: ApplicationFiled: December 30, 2002Publication date: August 7, 2003Inventors: Mutsumi Kawamoto, Yoshimi Ishihara, Yoshinori Miyaishi, Mitsugi Yamashita, Nobuhiro Hosoi
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Patent number: 5775294Abstract: A control system for control of a vehicle prime mover includes an operation mode selecting device for selecting an operation mode, an accelerator operator, an operation mode detector for detecting the selected operation mode, an accelerator sensor for detecting an accelerator operating amount, an accelerator instruction value calculator for setting an accelerator instruction value to 0 unconditionally when the non-travel mode is selected and determining the accelerator instruction value based on a difference between the accelerator operating amount and a zero point value when the travel mode is selected, and an instruction value output calculator for determining and outputting an instruction value to the prime mover. The accelerator instruction value calculator sets the zero point value corresponding to the accelerator operating amount when the operation mode is changed.Type: GrantFiled: December 29, 1996Date of Patent: July 7, 1998Assignee: Aisin AW Co., Ltd.Inventors: Hiroyuki Kojima, Mutsumi Kawamoto
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Patent number: 5697466Abstract: A hybrid vehicle maintains its travel even if the motor driving system used therein suddenly encounters some problem in operation. The hybrid vehicle has an internal combustion engine and an electric motor with its output connected to an output axle. A clutch is provided to selectively connect the internal combustion engine to the output axle and a hydraulic power transmission is provided between the clutch and the internal combustion engine. A drive power share computer apportions the needed drive power between the engine and the motor. A detector is provided for detecting a malfunction of the motor. A first controller serves to release the clutch when the vehicle is running in a motor drive mode and a second controller effects engagement of the clutch and driving with the engine, even when the vehicle is a motor drive mode, when the detector detects a malfunction of the motor.Type: GrantFiled: November 10, 1993Date of Patent: December 16, 1997Assignee: Kabushikikaisha Equos ResearchInventors: Shuzo Moroto, Mutsumi Kawamoto, Kozo Yamaguchi, Shigeo Tuzuki, Yoshinori Miyaishi
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Patent number: 5598910Abstract: A clutch mechanism connecting and disconnecting an output shaft of an internal combustion engine and an input shaft of a transmission unit includes a first clutch assembly coupled to the input shaft of the transmission unit and a second clutch assembly coupled to an output shaft of the engine. A torque conduction member is provided between the first and second clutch assemblies for rotation relative to the two clutch assemblies. The torque conduction member has a first connecting surface for engaging the first clutch assembly and a second connecting surface for engaging the second clutch assembly. The contacting force at the first connecting surface is stronger than that at the second connecting surface, when a predetermined load is applied to the two connecting surfaces in succession.Type: GrantFiled: August 30, 1994Date of Patent: February 4, 1997Assignee: Kabushikikaisha Equos ResearchInventors: Shuzo Moroto, Koji Sumiya, Mutsumi Kawamoto, Masao Kawai, Hideki Aruga, Toshihiro Shiimado
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Patent number: 5562565Abstract: A power transmission system in a hybrid vehicle uses the power developed by an electric motor for directly rotating driving wheels, without power loss in a torque convertor connected to an engine. When the vehicle travels by the power of the engine, an input clutch 7 is engaged so that rotation of an engine output shaft 1a is transmitted to a two-gear shift device 9 via the torque convertor 6, the input clutch 7, and an intermediate shaft 21, whereby driving wheels 33a and 33b are driven by a differential unit 11. While powered by the electric motor, the input clutch 7 is released and the rotation of the electric motor 27 is preferably changed in the shift device 9 before being transmitted to the driving wheels 33a and 33b.Type: GrantFiled: October 14, 1993Date of Patent: October 8, 1996Assignee: Kabushikikaisha Equos ResearchInventors: Shuzo Moroto, Mutsumi Kawamoto, Kozo Yamaguchi, Shigeo Tuzuki, Yoshinori Miyaishi
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Patent number: 5433282Abstract: A hybrid vehicle has an internal combustion engine, an electric motor, a transmission unit and driving wheels. The transmission unit includes a planetary gear unit and a one-way clutch, so that each output rotary speed of the internal combustion engine and the electric motor is changed. The planetary gear unit includes three elements: a ring gear, a sun gear and a carrier having at least one pinion. When the vehicle is in an under-drive cruising state, the first element of the planetary gear unit, which does not rotate, is connected to the output shaft of the internal combustion engine, the second element of the planetary gear unit, which rotates at a relatively high, speed, is connected to the output shaft of the electric motor, and the third element of the planetary gear unit, which rotates at relatively lower speed, is connected to the output shaft of the transmission unit.Type: GrantFiled: May 12, 1993Date of Patent: July 18, 1995Assignee: Kabushikikaisha Equos ResearchInventors: Shuzo Moroto, Mutsumi Kawamoto, Kozo Yamaguchi, Shigeo Tuzuki, Yoshinori Miyaishi
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Patent number: 5419406Abstract: A drive system for an electric vehicle includes a plurality of motors and reduction gearing, including planetary gearing, for power transmission from the motors to the wheels of the electric vehicle. The motors and the reduction gearing are coaxially arranged so that they can be mounted in axial alignment with and between the right-hand and left-hand wheels of the electric vehicle.Type: GrantFiled: October 23, 1992Date of Patent: May 30, 1995Assignee: Aisin AW Co., Ltd.Inventors: Mutsumi Kawamoto, Masahiro Hasebe, Yoshinori Miyaishi
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Patent number: 5382854Abstract: A motor drive apparatus for an electric vehicle has a case attached to a vehicle body; an output axle which rotates relative to the case; an electric motor having a magneto stator secured to an inside wall of the case and a rotor which faces the magneto stator with a predetermined clearance and rotates relative to the case; and a planetary gear unit provided inside of the rotor and consisting of three components of a sun gear, a ring gear and a carrier. The electric motor speed is output from the output axle through the planetary gear unit.Type: GrantFiled: July 22, 1993Date of Patent: January 17, 1995Assignee: Kabushikikaisha Equos ResearchInventors: Mutsumi Kawamoto, Satoru Tanaka, Mitsugi Yamashita
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Patent number: 5376868Abstract: A driving force controller for an electric motor vehicle which suppresses changes in behavior of a vehicle when a right or left driving wheel experiences trouble and detects vehicle conditions to independently control the driving force of each wheel so as not to deviate from a predetermined range. The driving force controller computes a driving force for each wheel in accordance to a demand value for driving force and a detected vehicle traveling condition to drive each wheel independently by electric motors. Motor drivers control the motors so that each motor generates power corresponding to the value of driving force computed therefor. A driving demand detector detects the value of driving force demanded for the vehicle and a vehicle condition detector detects a traveling condition of the vehicle. Wheel driving condition detectors detect conditions at the wheels.Type: GrantFiled: April 1, 1992Date of Patent: December 27, 1994Assignee: Aisin Aw Co., Ltd.Inventors: Minoru Toyoda, Shuzo Moroto, Mutsumi Kawamoto, Mitsugi Yamashita
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Patent number: 5365431Abstract: An electric motor vehicle having a plurality of motors mounted thereon as a driving force source includes a detector for detecting the vehicle speed; a detector for detecting the load applied to the wheels; a calculating device for selecting a detected value of either one of these detectors and for determining driving force command values for respective motors corresponding to the wheels on the basis of the detected value selected and driving force values required of the electric motor vehicle; and a controller for controlling the driving forces of the motors on the basis of the driving force command values of the calculating device.Type: GrantFiled: April 24, 1991Date of Patent: November 15, 1994Assignee: Aisin Aw Co., Ltd.Inventors: Yukihiro Minezawa, Mutsumi Kawamoto, Hidemitsu Inagaki, Yutaka Hotta
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Patent number: 5289890Abstract: A drive unit for an electric motor vehicle includes first and second electric motors having characteristics which achieve high efficiencies in different operational regions. A common motor shaft receives output torques from both of the first and second motors, which output torque are then transmitted to a drive wheel. Sensors are provided for sensing a travelling condition of the vehicle and the rotational speeds of the first and second motors. Request torque, i.e. that torque required for the travel of the vehicle, is determined in accordance with the detected travelling condition of the vehicle. The determined request torque is distributed to the first and second motors in accordance with the detected rotational speeds to govern the output torques of the first and second motors.Type: GrantFiled: November 25, 1992Date of Patent: March 1, 1994Assignee: Aisin Aw Co., Ltd.Inventors: Minoru Toyoda, Shuzo Moroto, Mutsumi Kawamoto
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Patent number: 5251680Abstract: A collision-preventing apparatus for an electric motor vehicle in which wheels are driven by electric motors and the electric motors are subjected to braking such as regenerative braking or dynamic braking. The apparatus includes an obstacle sensor and a control unit for processing detected information supplied from the obstacle sensor and for outputting a brake actuation signal when the result of processing indicates a set of conditions predetermined to be dangerous, so as to apply brakes to the electric motors.Type: GrantFiled: August 8, 1991Date of Patent: October 12, 1993Assignee: Aisin AW Co., Ltd.Inventors: Yukihiro Minezawa, Mutsumi Kawamoto, Hidemitsu Inagaki
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Patent number: 5180180Abstract: In a wheel supporting apparatus, a strut type suspension has an upper end supported by a vehicle frame and a lower end supported by the vehicle frame through a lower arm. The wheel supporting apparatus comprises a wheel supporting part provided at the lower end of the strut type suspension, and supporting the wheel to allow relative rotation to the strut type suspension. A center axis of the strut type suspension is disposed parallel to a rotation axis of the relative rotation of the wheel.Type: GrantFiled: April 24, 1991Date of Patent: January 19, 1993Assignee: Aisin AW Co., Ltd.Inventors: Mitugu Yamashita, Mutsumi Kawamoto, Hidemitsu Inagaki
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Patent number: 5163528Abstract: A wheel motor provided with a reduction gear includes a stator fixed to a casing, a hollow cylindrical rotor supported by the casing through a bearing, an output flange supported by the casing through a double row angular ball bearing and attached to a wheel, and reduction gearing having an input gear wheel supported by the rotor and an output gear wheel supported by the output flange and disposed in a hollow in the rotor. The rotor has a thin-wall edge portion and a second, opposing edge portion. The thin edge portion and the opposing edge portion form two axially spaced points at which the rotor is rotatably supported by ball bearings.Type: GrantFiled: June 19, 1991Date of Patent: November 17, 1992Assignee: Aisun AW Co., Ltd.Inventors: Mutsumi Kawamoto, Satoru Tanaka
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Patent number: 5161813Abstract: A vehicle steering apparatus includes a steering mechanism adapted to transmit a steering angle of a steering wheel through a link mechanism to a wheel. The vehicle steering apparatus includes an angle increasing gear set disposed between the link mechanism and the wheel for increasing the steering angle of the steering wheel to be transmitted to the wheel. The angle increasing gear set and the wheels are supported by a vehicle frame through a suspension. The angle increasing gear is formed of an internal gear wheel connected to the link mechanism and an external gear wheel connected to the wheel and meshing with the internal gear wheel.Type: GrantFiled: April 24, 1991Date of Patent: November 10, 1992Assignee: Aisin AW Co., Ltd.Inventors: Mitugu Yamashita, Mutsumi Kawamoto, Hidemitsu Inagaki
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Patent number: 5156579Abstract: A wheel motor is provided with a stator which includes a coil wound therearound and which is fixed to a casing, a hollow cylindrical rotor which is supported by the casing through a bearing and is disposed inside the stator, an output flange which is supported by the casing through a bearing and which is fixed to a wheel, a reduction mechanism which includes an input gear supported by the rotor and an output gear supported by the output flange and which is disposed in the hollow in the rotor, an oil pump motor disposed in a lower portion of the casing, an oil passage extending upward through a side wall of the casing, and an oil passage which is formed in an upper portion of the casing and which feeds a discharge port through which oil is ejected for cooling the stator coil. The lubricating system for the wheel motor includes a lubricating oil passage extending from the oil passage in the upper portion of the casing to the reduction mechanism for supplying the cooled oil to the reduction mechanism.Type: GrantFiled: June 19, 1991Date of Patent: October 20, 1992Assignee: Aisin Aw Co., Ltd.Inventors: Satoru Wakuta, Mutsumi Kawamoto
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Patent number: 5150763Abstract: A wiring and piping arrangement for a vehicle motor comprises a wheel motor connected to a wheel, a wheel support member connected to a vehicle frame through a damper, an internal gear rotatably supported on the wheel support member, and a pivot fixed to a casing of the wheel motor. The pivot is provided with an external gear meshing with said internal gear. The arrangement further comprises a wiring and/or piping for the wheel motor extended through an interior or said pivot. Since the wirings and pipings are extended through the pivot for a steering operation of the wheel motor, the wiring and/or piping are required to have slacks or extra lengths which allow only the vertical movement of the wheel, and are not required to have the slacks for allowing the lateral movement of the wheel.Type: GrantFiled: April 24, 1991Date of Patent: September 29, 1992Assignee: Aisin AW Co., Ltd.Inventors: Mitugu Yamashita, Mutsumi Kawamoto, Hidemitsu Inagaki