Patents by Inventor Manabu Wakuta

Manabu Wakuta 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).

  • Traction drive rotary assembly and process for producing rolling element thereof
    Patent number: 6736036
    Abstract: A rotary assembly for traction drives, including a plurality of rolling elements having a rotation axis and traction contact surfaces around the rotation axis and associating with each other to transmit a motive power between the rolling elements via a traction oil film formed between the traction contact surfaces, in which at least one of the traction contact surfaces has a microstructure with irregularities which sizes are larger than a thickness of the traction oil film. The process for the traction contact surface is also disclosed.
    Type: Grant
    Filed: April 30, 2003
    Date of Patent: May 18, 2004
    Assignee: Nissan Motor Co., Ltd.
    Inventors: Nobutaka Chiba, Toshikazu Nanbu, Makoto Kano, Jun Watanabe, Kenshi Ushijima, Masahiro Omata, Minoru Oota, Hiroo Ueda, Manabu Wakuta
  • Traction drive rotary assembly and process for producing rolling element thereof
    Patent number: 6629906
    Abstract: A rotary assembly for traction drives, including a plurality of rolling elements having a rotation axis and traction contact surfaces around the rotation axis and associating with each other to transmit a motive power between the rolling elements via a traction oil film formed between the traction contact surfaces, in which at least one of the traction contact surfaces has a microstructure with irregularities which sizes are larger than a thickness of the traction oil film. The process for the traction contact surface is also disclosed.
    Type: Grant
    Filed: September 7, 2000
    Date of Patent: October 7, 2003
    Assignee: Nissan Motor Co., Ltd.
    Inventors: Nobutaka Chiba, Toshikazu Nanbu, Makoto Kano, Jun Watanabe, Kenshi Ushijima, Masahiro Omata, Minoru Oota, Hiroo Ueda, Manabu Wakuta