Patents by Inventor Yoshimitsu Takahashi
Yoshimitsu Takahashi 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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Publication number: 20150266478Abstract: When a basic creep torque Tctmp is a positive value and a braking torque demand Trb* is a negative value, the control procedure sets a basic reflection rate Rctmp based on the braking torque demand Trb* (S240). In a state of non-activation of vehicle distance control (S250), the control procedure sets a target reflection rate Rc* using the basic reflection rate Rctmp directly (S230). In a state of activation of vehicle distance control (S250), the control procedure sets the target reflection rate Rc* using a guarded reflection rate Rcgd obtained by guarding the lower limit of the basic reflection rate Rctmp with a previous value of the target reflection rate (previous Rc*) in a previous cycle (S270 and S280).Type: ApplicationFiled: March 19, 2015Publication date: September 24, 2015Inventor: Yoshimitsu Takahashi
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Patent number: 9136738Abstract: An electric rotating machine includes a rotor and a stator. The rotor has a plurality of pairs of magnetic poles. The stator includes a stator core and a stator coil that is comprised of a plurality of phase windings wound on the stator core. The stator core has, for each of the phase windings of the stator coil, n circumferentially-consecutive single-phase slots, in which only the phase winding is received, per magnetic pole of the rotor, where n is a natural number not less than 2. Each of the phase windings of the stator coil has first to kth sections that are sequentially arranged from one end to the other end of the phase winding, where k is a natural number not less than 2. The first section is received in different ones of the single-phase slots for the phase winding from the kth section.Type: GrantFiled: September 24, 2012Date of Patent: September 15, 2015Assignees: DENSO CORPORATION, NIPPON SOKEN, INC.Inventors: Kazumasa Ikeda, Toru Wakimoto, Yoshimitsu Takahashi
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Publication number: 20150244227Abstract: A rotary electric machine includes a rotor and a stator. A stator core has n in-phase slots provided in the circumferential direction and correspond to magnetic poles, and into each of which phase windings of the same phase are installed. Each of the phase windings is divided into 2n portions in an extending direction so that each of the phase windings is configured by a first partial winding, a second partial winding, . . . , and a 2n-th partial winding arranged from one end positioned in the extending direction in sequence. The first partial winding and the 2n-th partial winding are inserted into different in-phase slots of the stator core. Counted from one end positioned in the extending direction, the 2m-th (1?m?n) partial winding at an even-numbered position and the (2m?1)-th partial winding are inserted into different in-phase slots of the stator core.Type: ApplicationFiled: February 20, 2015Publication date: August 27, 2015Inventors: Toru WAKIMOTO, Yoshimitsu TAKAHASHI, Shinichi NINO, Shinji KOUDA
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Publication number: 20150239461Abstract: A hybrid vehicle provided with an engine, a first motor generator, a planetary gear mechanism, a second motor generator, a battery, a battery state sensing unit which senses the voltage and the residual capacity of the battery, a steepness sensor which senses the uphill steepness, an accelerator pedal depression amount sensor, and a controller. The minimum rotation speed of the engine is set in accordance with the uphill steepness and the accelerator pedal depression amount, when the hybrid vehicle is travelling in reverse and the battery is charged with the voltage of the battery equal to or below a first threshold or the residual capacity of the battery equal to or below a second threshold.Type: ApplicationFiled: February 4, 2015Publication date: August 27, 2015Inventor: Yoshimitsu Takahashi
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Publication number: 20150217481Abstract: A mixer drum driving apparatus includes a liquid-pressure motor that drives the mixer drum to rotate, a liquid-pressure pump that is driven by a motive force of an engine and supplies working liquid to the liquid-pressure motor, an auxiliary liquid-pressure pump that is driven by an electric motor and supplies working liquid to the liquid-pressure motor, a pressure detector that detects a liquid pressure of working liquid discharged from the auxiliary liquid-pressure pump, and a switching valve that switches whether or not working liquid from the auxiliary liquid-pressure pump is supplied to the liquid-pressure motor. In a state in which the switching valve is closed and the mixer drum is being driven to rotate by the liquid-pressure motor that is driven by the liquid-pressure pump, the controller opens the switching valve if a liquid pressure detected by the pressure detector reaches or exceeds a preset liquid pressure.Type: ApplicationFiled: September 11, 2013Publication date: August 6, 2015Inventor: Yoshimitsu Takahashi
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Publication number: 20150047335Abstract: A mixer drum driving apparatus includes an auxiliary fluid pressure pump that is provided independently of a fluid pressure pump and is capable of supplying a working fluid to a fluid pressure motor so as to cause a mixer drum to perform agitation rotation, a plurality of motors configured to drive the auxiliary fluid pressure pump to rotate, and a control unit that controls rotation of the mixer drum. When an engine is stopped during the agitation rotation of the mixer drum, the control unit drives the auxiliary fluid pressure pump to rotate by operating the plurality of motors selectively in accordance with a load of the mixer drum.Type: ApplicationFiled: February 26, 2013Publication date: February 19, 2015Applicant: KAYABA INDUSTRY CO., LTD.Inventor: Yoshimitsu Takahashi
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Publication number: 20140296027Abstract: A control apparatus for a vehicle shifts a lock-up clutch to a slipping or released state when braking. The control apparatus causes an electric motor to output assist torque in a direction increasing a rotational speed of an engine, during control for shifting the lock-up clutch to a released state, when prescribed sudden braking is required during engine-powered travel in a locked-up state. Therefore, even if there is a time delay in actual implementation of shift from the locked-up state to the released state by the lock-up clutch, the rotational speed of the engine is increased (or maintained), or decrease in the rotational speed of the engine is suppressed, by the assist torque from the electric motor.Type: ApplicationFiled: March 31, 2014Publication date: October 2, 2014Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventor: Yoshimitsu TAKAHASHI
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Publication number: 20140107878Abstract: An ECU is mounted on a vehicle including an engine and a motor that can generate cranking torque applied to a rotation shaft of the engine. Where a request for starting the engine is not issued, the ECU determines whether the engine is during coasting or not. The ECU changes cranking target torque in accordance with engine rotation speed. In this way, engine rotation speed during cranking can be reduced to and remain in the optimum region where misfire and resonance can be avoided.Type: ApplicationFiled: October 12, 2012Publication date: April 17, 2014Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Yoshimitsu Takahashi, Keisuke Morisaki, Daisuke Itoyama, Hideaki Yaguchi, Shinichi Sugai
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Publication number: 20140013736Abstract: A mixer drum driving device includes a mixer drum, a hydraulic motor, a hydraulic pump, an auxiliary hydraulic pump for rotating the mixer drum for mixing by supplying pressure oil to the hydraulic motor independently of the hydraulic pump, and a direct-current brush motor for driving and rotating the auxiliary hydraulic pump. The auxiliary hydraulic pump is driven and rotated by the direct-current brush motor when the engine stops during the rotation of the mixer drum for mixing.Type: ApplicationFiled: March 21, 2012Publication date: January 16, 2014Applicant: KAYABA INDUSTRY CO., LTDInventors: Yoshimitsu Takahashi, Tetsuo Kasahara, Kazunori Tanaka
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Publication number: 20140015315Abstract: A mixer drum driving apparatus having a mixer drum carried on a frame of a mixer truck to be free to rotate and a drive source configured to drive the mixer drum to rotate includes a rotary motor configured to drive the mixer drum to rotate as the drive source, a power supply configured to supply power to the rotary motor, and a power generator configured to generate power as the mixer drum rotates and charge the generated power to the power supply.Type: ApplicationFiled: March 12, 2012Publication date: January 16, 2014Applicant: KAYABA INDUSTRY CO., LTDInventors: Yoshimitsu Takahashi, Kazunori Tanaka
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Publication number: 20140010035Abstract: A mixer drum driving apparatus includes a mixer drum carried on a frame of a mixer truck in a frontward tilted condition to be free to rotate, and a drive source configured to drive the mixer drum to rotate. The drive source includes a motor which is disposed in a space between a rear portion of the mixer drum and a rear portion of the frame in order to drive the mixer drum to rotate.Type: ApplicationFiled: March 15, 2012Publication date: January 9, 2014Applicant: KAYABA INDUSTRY CO., LTD.Inventor: Yoshimitsu Takahashi
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Publication number: 20140010036Abstract: A mixer drum driving device includes a mixer drum, a hydraulic motor, a hydraulic pump, an auxiliary hydraulic pump for rotating the mixer drum for mixing by supplying pressure oil to the hydraulic motor independently of the hydraulic pump, and a direct-current brush motor for driving and rotating the auxiliary hydraulic pump. In the case of rotating the mixer drum for mixing, the mixer drum is driven and rotated by driving only the auxiliary hydraulic pump by the direct-current brush motor.Type: ApplicationFiled: March 15, 2012Publication date: January 9, 2014Applicant: KAYABA INDUSTRY CO., LTD.Inventors: Yoshimitsu Takahashi, Kazunori Tanaka
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Patent number: 8616758Abstract: A mixer drum driving device includes a hydraulic motor that rotates a mixer drum, a first hydraulic pump that is driven by an engine to be capable of supplying working oil to the hydraulic motor, an electric motor, a power supply connected to the electric motor, a second hydraulic pump capable of supplying the working oil to the hydraulic motor on the basis of a driving force of the motor, and a flow dividing valve that divides the working oil discharged from the first hydraulic pump and supplies the working oil to the hydraulic motor and the second hydraulic pump. The second hydraulic pump is configured to rotate the electric motor using the working oil. The electric motor is configured to generate electric power so as to charge the power supply when driven to rotate by the second hydraulic pump.Type: GrantFiled: March 12, 2012Date of Patent: December 31, 2013Assignee: Kayaba Industry Co., Ltd.Inventor: Yoshimitsu Takahashi
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Publication number: 20130111892Abstract: A mixer drum driving device includes a hydraulic motor that rotates a mixer drum, a first hydraulic pump that is driven by an engine to be capable of supplying working oil to the hydraulic motor, an electric motor, a power supply connected to the electric motor, a second hydraulic pump capable of supplying the working oil to the hydraulic motor on the basis of a driving force of the motor, and a flow dividing valve that divides the working oil discharged from the first hydraulic pump and supplies the working oil to the hydraulic motor and the second hydraulic pump. The second hydraulic pump is configured to rotate the electric motor using the working oil. The electric motor is configured to generate electric power so as to charge the power supply when driven to rotate by the second hydraulic pump.Type: ApplicationFiled: March 12, 2012Publication date: May 9, 2013Applicant: KAYABA INDUSTRY CO., LTD.Inventor: Yoshimitsu Takahashi
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Patent number: 8368404Abstract: A discharge amount measuring device includes a power source, first and second sensors, a calibration wire, and a measuring portion. The power source applies a voltage to a coil of a rotational electric machine. The first sensor detects a current flowing through the coil. The calibration wire has an end connected to the coil. The second sensor detects a current flowing through the calibration wire. The measuring portion forms a calibration line based on a first waveform detected by the first sensor and a second waveform detected by the second sensor. The measuring portion calculates a discharge amount based on the calibration line.Type: GrantFiled: April 27, 2010Date of Patent: February 5, 2013Assignees: Nippon Soken, Inc., DENSO CORPORATIONInventors: Toru Wakimoto, Yoshimitsu Takahashi, Shinji Kouda
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Publication number: 20100271002Abstract: A discharge amount measuring device includes a power source, first and second sensors, a calibration wire, and a measuring portion. The power source applies a voltage to a coil of a rotational electric machine. The first sensor detects a current flowing through the coil. The calibration wire has an end connected to the coil. The second sensor detects a current flowing through the calibration wire. The measuring portion forms a calibration line based on a first waveform detected by the first sensor and a second waveform detected by the second sensor. The measuring portion calculates a discharge amount based on the calibration line.Type: ApplicationFiled: April 27, 2010Publication date: October 28, 2010Applicants: NIPPON SOKEN, INC., DENSO CORPORATIONInventors: Toru Wakimoto, Yoshimitsu Takahashi, Shinji Kouda