Patents by Inventor Ryuma Mano

Ryuma Mano 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).

  • Constant velocity universal joint for propeller shaft
    Patent number: 6913540
    Abstract: A constant velocity universal joint for use with a propeller shaft which reduces its weight and size as well as facilitates assembling a stub shaft, thereby reducing the number of parts used and improving rotational balance. The universal joint, comprising: an outer ring with a cup-shaped enlarged diameter portion having track grooves formed on an inner peripheral surface and with a hollow reduced diameter portion integrated with the enlarged diameter portion; an inner ring having track grooves formed on an outer peripheral surface; balls, interposed between the track grooves of the inner and outer rings, for transmitting torque; a cage, accommodated in an annular space between the inner and outer rings, for holding the balls.
    Type: Grant
    Filed: May 3, 2002
    Date of Patent: July 5, 2005
    Assignee: NTN Corporation
    Inventors: Michio Iihara, Yoshihiro Sagisaka, Masazumi Kobayashi, Akio Sakaguchi, Ryuma Mano, Kikuo Maeda
  • Constant velocity universal joint for propeller shaft
    Publication number: 20020187841
    Abstract: A constant velocity universal joint for use with a propeller shaft which reduces its weight and size as well as facilitates assembling a stub shaft, thereby reducing the number of parts used and improving rotational balance. The universal joint, comprising: an outer ring with a cup-shaped enlarged diameter portion having track grooves formed on an inner peripheral surface and with a hollow reduced diameter portion integrated with the enlarged diameter portion; an inner ring having track grooves formed on an outer peripheral surface; balls, interposed between the track grooves of the inner and outer rings, for transmitting torque; a cage, accommodated in an annular space between the inner and outer rings, for holding the balls.
    Type: Application
    Filed: May 3, 2002
    Publication date: December 12, 2002
    Inventors: Michio Iihara, Yoshihiro Sagisaka, Masazumi Kobayashi, Akio Sakaguchi, Ryuma Mano, Kikuo Maeda