Patents by Inventor Yutaca Hagiwara

Yutaca Hagiwara 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).

  • Disc brake having oppositely swingable cylinder and caliper
    Patent number: 4591028
    Abstract: A single brake cylinder for directly loading an inner pad against a disc, and a yoke for indirectly loading an outer pad against the disc are both swingable, respectively, about a cylinder pivot axis and a yoke pivot axis which are both substantially parallel to the disc, and parallel or coincident with each other. When the brake is applied, the cylinder swings in one direction and the yoke swings in the opposite direction in such a manner that the trailing portion of each pad is loaded with a greater force to reduce brake noise.
    Type: Grant
    Filed: November 7, 1984
    Date of Patent: May 27, 1986
    Assignee: Nissan Motor Co., Ltd.
    Inventors: Yutaca Hagiwara, Terukiyo Kitamura, Hideto Murakami
  • Warning device for indicating wear of friction pads in disc brake
    Patent number: 4174024
    Abstract: A disc brake is provided with a warning device or sensor made of a springy material. The sensor is mounted within an space between a friction disc and pad assembly and a yoke, and has a tongue portion formed with a section adapted to rub on a rotating disc at an area disposed outside of the contact surface. When a friction pad is worn out to a predetermined thickness, the section rubs on the disc, emitting an audible warning sound to alert the driver that something is wrong and he should take appropriate action.
    Type: Grant
    Filed: January 26, 1978
    Date of Patent: November 13, 1979
    Assignee: Nissan Motor Company, Limited
    Inventor: Yutaca Hagiwara
  • Tandem master cylinder
    Patent number: 4161105
    Abstract: A tandem master cylinder comprises two pistons, one of which includes a cylindrical bore for receiving therein the other piston, and limiting means for limiting the axial movement of the other piston.
    Type: Grant
    Filed: August 4, 1977
    Date of Patent: July 17, 1979
    Assignee: Nissan Motor Company, Limited
    Inventor: Yutaca Hagiwara