Patents by Inventor Takashi Ohtsuji

Takashi Ohtsuji 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 hub
    Patent number: 6431658
    Abstract: A bicycle hub is provided for use with bicycle spokes with spoke nipples threadedly coupled to their inner ends. The bicycle hub includes a hub axle and a hub body. The hub axle has a center axis extending between a first end and a second end. The hub body has a tubular center portion defining an interior passageway and a first mounting portion coupled to a first end of the center portion. The center portion defines an interior passageway with the hub axle being rotatably supported in the interior passageway. The first mounting portion has a plurality of first spoke openings extending axially to a first free edge and a plurality of first protrusions extending radially inwardly from the first mounting portion. The plurality of first protrusions are fixedly coupled to the first mounting portion. The bicycle hub also includes a second mounting portion coupled to a second end of the central portion. The second mounting portion has a plurality of second spoke openings.
    Type: Grant
    Filed: March 17, 2000
    Date of Patent: August 13, 2002
    Assignee: Shimano Inc.
    Inventors: Masao Nakajima, Takashi Ohtsuji
  • Bicycle hub
    Patent number: 6409282
    Abstract: A bicycle hub is provided for use with bicycle spokes with spoke nipples threadedly coupled to their inner ends. The bicycle hub includes a hub axle and a hub body. The hub axle has a center axis extending between a first end and a second end. The hub body has a tubular center portion defining an interior passageway and a first mounting portion coupled to a first end of the center portion. The center portion defines an interior passageway with the hub axle being rotatably supported in the interior passageway. The first mounting portion has a plurality of first spoke openings extending axially to a first free edge and a plurality of first protrusions extending radially inwardly from the first mounting portion. The plurality of first protrusions are fixedly coupled to the first mounting portion. The bicycle hub also includes a second mounting portion coupled to a second end of the central portion. The second mounting portion has a plurality of second spoke openings.
    Type: Grant
    Filed: November 30, 2001
    Date of Patent: June 25, 2002
    Assignee: Shimano Inc.
    Inventors: Masao Nakajima, Takashi Ohtsuji
  • Bicycle hub
    Publication number: 20020038972
    Abstract: A bicycle hub is provided for use with bicycle spokes with spoke nipples threadedly coupled to their inner ends. The bicycle hub includes a hub axle and a hub body. The hub axle has a center axis extending between a first end and a second end. The hub body has a tubular center portion defining an interior passageway and a first mounting portion coupled to a first end of the center portion. The center portion defines an interior passageway with the hub axle being rotatably supported in the interior passageway. The first mounting portion has a plurality of first spoke openings extending axially to a first free edge and a plurality of first protrusions extending radially inwardly from the first mounting portion. The plurality of first protrusions are fixedly coupled to the first mounting portion. The bicycle hub also includes a second mounting portion coupled to a second end of the central portion. The second mounting portion has a plurality of second spoke openings.
    Type: Application
    Filed: November 30, 2001
    Publication date: April 4, 2002
    Inventors: Masao Nakajima, Takashi Ohtsuji