Patents by Inventor Takahiro Saruwatari

Takahiro Saruwatari 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).

  • Gear system for electric vehicle
    Patent number: 11031851
    Abstract: A power transmission device for a vehicle is comprised of a motor including a rotor shaft and a stator having an electromagnetic coil; an inverter configured to generate an alternating current, the inverter being connected with the coil to controllably rotate the rotor shaft relative to the stator; a gear set including an input shaft coupled with and rotated by the rotor shaft, an output shaft and gears so meshed as to transmit torque of the input shaft to the output shaft; and a grounding path electrically connecting a part of the gear set with a body of the vehicle, the part being so disposed as to have the input shaft electrically interposed between the part and the rotor shaft.
    Type: Grant
    Filed: December 8, 2016
    Date of Patent: June 8, 2021
    Assignee: NISSAN MOTOR CO., LTD.
    Inventors: Tomohiro Okada, Naoaki Oikawa, Takahiro Saruwatari, Tatsuhiko Ikeda, Ken Nakayama, Kazuhiko Soeda, Akinori Inada
  • Friction engagement element, dry clutch, and method of manufacturing friction engagement element
    Patent number: 10132374
    Abstract: A friction engagement element has a friction member including resin, and a metal member having a sliding surface slidable on the friction member. The friction member has an aged layer at an outermost layer of the friction member, and a hardened layer in abutment with an inner side of the aged layer in a thickness direction of the friction member. The sliding surface of the metal member has a plurality of recesses, and a transferred film of the aged layer of the friction member transferred and adhered to insides of the plurality of recesses through sliding between the friction member and the metal member.
    Type: Grant
    Filed: September 18, 2013
    Date of Patent: November 20, 2018
    Assignees: NISSAN MOTOR CO., LTD., EXEDY Corporation, EXEDY Friction Material Co., LTD
    Inventors: Seiji Terauchi, Kazushige Yoshida, Tatsuya Osone, Takahiro Saruwatari, Nobuyasu Watanabe, Takeshi Yamada, Hiroki Mori, Takashi Takehara, Shinya Unigame
  • GEAR SYSTEM FOR ELECTRIC VEHICLE
    Publication number: 20170126105
    Abstract: A power transmission device for a vehicle is comprised of a motor including a rotor shaft and a stator having an electromagnetic coil; an inverter configured to generate an alternating current, the inverter being connected with the coil to controllably rotate the rotor shaft relative to the stator; a gear set including an input shaft coupled with and rotated by the rotor shaft, an output shaft and gears so meshed as to transmit torque of the input shaft to the output shaft; and a grounding path electrically connecting a part of the gear set with a body of the vehicle, the part being so disposed as to have the input shaft electrically interposed between the part and the rotor shaft.
    Type: Application
    Filed: December 8, 2016
    Publication date: May 4, 2017
    Applicant: NISSAN MOTOR CO., LTD.
    Inventors: Tomohiro OKADA, Naoaki Oikawa, Takahiro Saruwatari, Tatsuhiko Ikeda, Ken Nakayama, Kazuhiko Soeda, Akinori Inada
  • FRICTION ENGAGEMENT ELEMENT, DRY CLUTCH, AND METHOD OF MANUFACTURING FRICTION ENGAGEMENT ELEMENT
    Publication number: 20160281810
    Abstract: A friction engagement element has a friction member including resin, and a metal member having a sliding surface slidable on the friction member. The friction member has an aged layer at an outermost layer of the friction member, and a hardened layer in abutment with an inner side of the aged layer in a thickness direction of the friction member. The sliding surface of the metal member has a plurality of recesses, and a transferred film of the aged layer of the friction member transferred and adhered to insides of the plurality of recesses through sliding between the friction member and the metal member.
    Type: Application
    Filed: September 18, 2013
    Publication date: September 29, 2016
    Applicant: Nissan Motor Co., Ltd.
    Inventors: Seiji Terauchi, Kazushige Yoshida, Tatsuya Osone, Takahiro Saruwatari
  • POWER TRANSMISSION DEVICE FOR ELECTRIC VEHICLE
    Publication number: 20130057096
    Abstract: A power transmission device for a vehicle is comprised of a motor including a rotor shaft and a stator having an electromagnetic coil; an inverter configured to generate an alternating current, the inverter being connected with the coil to controllably rotate the rotor shaft relative to the stator; a gear set including an input shaft coupled with and rotated by the rotor shaft, an output shaft and gears so meshed as to transmit torque of the input shaft to the output shaft; and a grounding path electrically connecting a part of the gear set with a body of the vehicle, the part being so disposed as to have the input shaft electrically interposed between the part and the rotor shaft.
    Type: Application
    Filed: May 26, 2011
    Publication date: March 7, 2013
    Inventors: Tomohiro Okada, Naoaki Oikawa, Takahiro Saruwatari, Tatsuhiko Ikeda, Ken Nakayama, Kazuhiko Soeda, Akinori Inada