Patents by Inventor Takuro IWASE

Takuro IWASE 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).

  • Publication number: 20200295696
    Abstract: A rotary electric machine control device that performs drive control on an AC rotary electric machine using an inverter that converts power between DC power and AC power through pulse width modulation based on a carrier frequency, the rotary electric machine control device including: an electronic control unit that is configured to vary the carrier frequency such that the carrier frequency becomes higher as a rotational speed of the rotary electric machine becomes higher so that carrier sideband frequencies, which are frequencies of sideband waves that appear on higher and lower sides of a center frequency that is set in accordance with the carrier frequency, are not included in a frequency band prescribed in advance.
    Type: Application
    Filed: March 27, 2018
    Publication date: September 17, 2020
    Applicant: AISIN AW CO., LTD.
    Inventors: Masayuki TAKENAKA, Takuro IWASE, Akiya KUME, Shoji NAGATA, Yasuyuki SATO
  • Publication number: 20200278011
    Abstract: A vehicle drive system including: a rotating electric machine; an output drivingly coupled to a wheel; a differential gear device provided in a power transmission path between the rotating electric machine and the output, the differential gear device including at least a first rotating element drivingly coupled to the rotating electric machine, a second rotating element drivingly coupled to the output, and a third rotating element that is selectively fixed by a one-way clutch to a non-rotating member and that is selectively fixed by a friction brake to the non-rotating member; and a clutch that selectively couples together two of the first rotating element, the second rotating element, and the third rotating element.
    Type: Application
    Filed: November 14, 2018
    Publication date: September 3, 2020
    Applicant: AISIN AW CO., LTD.
    Inventors: Takeshi TORII, Hiroshi KATO, Takuro IWASE, Keisuke NAKASHIMA, Daisuke YAMAOKA
  • Patent number: 8920148
    Abstract: An oil pump having an inner rotor with of external teeth; an outer rotor that is eccentrically provided and has internal teeth that mesh with the inner rotor external teeth, and an oil pump body that accommodates the outer and inner rotors. By rotationally driving the inner rotor to increase and decrease a space between the internal and the external teeth, an intake stroke suctions hydraulic oil from the oil pump body and a discharge stroke discharges the suctioned hydraulic oil to a discharge port formed in the oil pump body. Between the intake and discharge strokes, a confinement stroke cuts off the suctioned hydraulic oil and confines the suctioned hydraulic oil in the space, and a compression stroke reduces the space and compresses the confined hydraulic oil. Further, an interval is set between a finish end portion of the intake port of the oil pump body and a start end portion of the discharge port such that a rotation angle of the inner rotor during the compression stroke is 21 to 27 degrees.
    Type: Grant
    Filed: January 26, 2011
    Date of Patent: December 30, 2014
    Assignees: Aisin AW Co., Ltd., Toyooki Kogyo Co., Ltd.
    Inventors: Masateru Nakagawa, Nobukazu Ike, Takuro Iwase, Tomohiro Umemura, Noriyasu Ariga, Katsunori Ishikawa, Masashi Narita
  • Patent number: 8708120
    Abstract: A multi-plate clutch including a clutch hub having a cylindrical portion; a plurality of clutch plates splined to the outer periphery of the cylindrical portion of the clutch hub, and a plurality of spline teeth being formed on the outer periphery of the cylindrical portion of the clutch hub. A recessed portion is formed on the inner side of each spline tooth, and a weir portion is formed at one end of each recessed portion by depressing one portion of the spline tooth to the inner side on one end side of the cylindrical portion. Thus forming a depressed portion, and removing, with one portion of the depressed portion left behind, a portion of the cylindrical portion on the one end side of the one portion of the depressed portion.
    Type: Grant
    Filed: September 16, 2011
    Date of Patent: April 29, 2014
    Assignee: Aisin AW Co., Ltd.
    Inventors: Takeshi Torii, Takuro Iwase
  • Publication number: 20120080284
    Abstract: A multi-plate clutch including a clutch hub having a cylindrical portion; a plurality of clutch plates splined to the outer periphery of the cylindrical portion of the clutch hub, and a plurality of spline teeth being formed on the outer periphery of the cylindrical portion of the clutch hub. A recessed portion is formed on the inner side of each spline tooth, and a weir portion is formed at one end of each recessed portion by depressing one portion of the spline tooth to the inner side on one end side of the cylindrical portion. Thus forming a depressed portion, and removing, with one portion of the depressed portion left behind, a portion of the cylindrical portion on the one end side of the one portion of the depressed portion.
    Type: Application
    Filed: September 16, 2011
    Publication date: April 5, 2012
    Applicant: AISIN AW CO., LTD.
    Inventors: Takeshi TORII, Takuro IWASE
  • Publication number: 20110194968
    Abstract: An oil pump having an inner rotor with of external teeth; an outer rotor that is eccentrically provided and has internal teeth that mesh with the inner rotor external teeth, and an oil pump body that accommodates the outer and inner rotors. By rotationally driving the inner rotor to increase and decrease a space between the internal and the external teeth, an intake stroke suctions hydraulic oil from the oil pump body and a discharge stroke discharges the suctioned hydraulic oil to a discharge port formed in the oil pump body. Between the intake and discharge strokes, a confinement stroke cuts off the suctioned hydraulic oil and confines the suctioned hydraulic oil in the space, and a compression stroke reduces the space and compresses the confined hydraulic oil. Further, an interval is set between a finish end portion of the intake port of the oil pump body and a start end portion of the discharge port such that a rotation angle of the inner rotor during the compression stroke is 21 to 27 degrees.
    Type: Application
    Filed: January 26, 2011
    Publication date: August 11, 2011
    Applicants: AISIN AW CO., LTD., TOYOOKI KOGYO CO., LTD.
    Inventors: Masateru NAKAGAWA, Nobukazu IKE, Takuro IWASE, Tomohiro UMEMURA, Noriyasu ARIGA, Katsunori ISHIKAWA, Masashi NARITA