Patents by Inventor Tomoyuki KOTAKE

Tomoyuki KOTAKE 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).

  • Brake system
    Patent number: 9457783
    Abstract: A disk brake is configured as a brake apparatus provided with an electric parking brake function capable of holding braking of a vehicle by driving an electric actuator. A parking brake control apparatus, which controls the electric actuator, actuates the electric actuator so as to release holding of the braking upon determining that the vehicle is in a running state. More specifically, if a speed of the vehicle is maintained at a speed higher than 0 km/h for a predetermined time period, the parking brake control apparatus actuates a rotation/linear motion conversion mechanism by the electric actuator so as to release the holding of the piston of the disk brake.
    Type: Grant
    Filed: December 20, 2013
    Date of Patent: October 4, 2016
    Assignee: HITACHI AUTOMOTIVE SYSTEMS, LTD.
    Inventors: Tomoyuki Kotake, Wataru Yokoyama, Kenichiro Matsubara
  • Disc brake apparatus
    Patent number: 8972140
    Abstract: A disc brake apparatus, in which, at the time of a parking brake release operation, a control unit configured to control driving of an electric motor drives the electric motor so as to cause a piston holding mechanism to stop holding a piston, detects separation of a brake pad from a disk, and then stops driving the electric motor after driving the electric motor by a predetermined amount based on a current value of the electric motor.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: March 3, 2015
    Assignee: Hitachi Automotive Systems, Ltd.
    Inventors: Tomoyuki Kotake, Hirotaka Oikawa
  • BRAKE SYSTEM
    Publication number: 20140188362
    Abstract: A disk brake is configured as a brake apparatus provided with an electric parking brake function capable of holding braking of a vehicle by driving an electric actuator. A parking brake control apparatus, which controls the electric actuator, actuates the electric actuator so as to release holding of the braking upon determining that the vehicle is in a running state. More specifically, if a speed of the vehicle is maintained at a speed higher than 0 km/h for a predetermined time period, the parking brake control apparatus actuates a rotation/linear motion conversion mechanism by the electric actuator so as to release the holding of the piston of the disk brake.
    Type: Application
    Filed: December 20, 2013
    Publication date: July 3, 2014
    Applicant: HITACHI AUTOMOTIVE SYSTEMS, LTD.
    Inventors: Tomoyuki KOTAKE, Wataru YOKOYAMA, Kenichiro MATSUBARA
  • DISC BRAKE APPARATUS
    Publication number: 20130261917
    Abstract: The present invention provides a disc brake apparatus, in which, at the time of a parking brake release operation, a control unit configured to control driving of an electric motor drives the electric motor so as to cause a piston holding mechanism to stop holding a piston, detects separation of a brake pad from a disk, and then stops driving the electric motor after driving the electric motor by a predetermined amount based on a current value of the electric motor.
    Type: Application
    Filed: March 15, 2013
    Publication date: October 3, 2013
    Applicant: HITACHI AUTOMOTIVE SYSTEMS, LTD.
    Inventors: Tomoyuki KOTAKE, Hirotaka OIKAWA