Patents by Inventor Ryuichirou Takamoto

Ryuichirou Takamoto 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).

  • Bicycle component control apparatus
    Patent number: 9284016
    Abstract: A bicycle component control apparatus is basically provided with a controller that is configured to operate a first electrical bicycle component in response to receiving a first signal from a first input member, and to operate a second electrical bicycle component in response to receiving a second signal from a second input member. The controller is configured to prohibit operation of the second electrical bicycle component upon starting operation of the first electrical bicycle component.
    Type: Grant
    Filed: March 5, 2012
    Date of Patent: March 15, 2016
    Assignee: Shimano Inc.
    Inventors: Ryuichirou Takamoto, Yoshiyuki Kasai, Mao Kuroda, Tadashi Ichida, Toyoto Shirai
  • Electrically operated derailleur that re-engages a disengaged derailleur force overload clutch
    Patent number: 7942768
    Abstract: A derailleur includes a motor that drives a drive member, a driven member driven by the drive member, and a clutch having a first element that disengages from a second element when substantial resistance exists in a power transmission path between the drive member and the driven member. An apparatus for controlling the derailleur comprises a re-engage command receiving circuit and a re-engagement circuit, wherein the re-engage command receiving circuit receives a re-engage command signal to re-engage the first element with the second element when the first element is disengaged from the second element, and the re-engagement circuit re-engages the first element with the second element in response to the re-engage command signal.
    Type: Grant
    Filed: January 28, 2008
    Date of Patent: May 17, 2011
    Assignee: Shimano, Inc.
    Inventors: Ryuichirou Takamoto, Kazuhiro Fujii, Masahiko Fukuda
  • Shift control apparatus for a bicycle transmission that operates when signals are detected
    Patent number: 6877755
    Abstract: A shift control apparatus for a bicycle transmission comprises a signal detector that detects signals corresponding to motion of the bicycle, a threshold setting unit that sets a shift threshold value, and a time interval calculating unit that calculates time intervals after signals are detected. A control unit provides a signal to change a gear in the bicycle transmission only after a time interval between successive first and second signals passes the shift threshold value and the second signal is detected by the signal detector.
    Type: Grant
    Filed: September 17, 2003
    Date of Patent: April 12, 2005
    Assignee: Shimano, Inc.
    Inventor: Ryuichirou Takamoto
  • SHIFT CONTROL APPARATUS FOR A BICYCLE TRANSMISSION THAT OPERATES WHEN SIGNALS ARE DETECTED
    Publication number: 20040112161
    Abstract: A shift control apparatus for a bicycle transmission comprises a signal detector that detects signals corresponding to motion of the bicycle, a threshold setting unit that sets a shift threshold value, and a time interval calculating unit that calculates time intervals after signals are detected. A control unit provides a signal to change a gear in the bicycle transmission only after a time interval between successive first and second signals passes the shift threshold value and the second signal is detected by the signal detector.
    Type: Application
    Filed: September 17, 2003
    Publication date: June 17, 2004
    Applicant: SHIMANO, INC.
    Inventor: Ryuichirou Takamoto