Patents by Inventor Haruyoshi Yoshida

Haruyoshi Yoshida 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).

  • Packing material fitting structure
    Patent number: 8113519
    Abstract: A packing material fitting structure that prevents the packing material from easily dropping out and facilitates mounting and fixing of the packing material in a packing material fitting place in a part such as a casing or a cover of an engine or a pump with sealing ability. The fitting structure is provided with a packing material having an annular main body portion and a plurality of projections each having a main protruding portion formed to protrude from the annular main body portion and an auxiliary protruding portion formed integrally in the vicinity of the main protruding portion, the projections being formed with an appropriate spacing in the longitudinal direction of the main annular main body portion. The fitting structure is also provided with a casing having formed therein an annular fitting groove for inserting the annular main body portion of the packing material.
    Type: Grant
    Filed: February 12, 2009
    Date of Patent: February 14, 2012
    Assignee: Yamada Manufacturing Co., Ltd.
    Inventor: Haruyoshi Yoshida
  • Packing material fitting structure
    Publication number: 20090243229
    Abstract: A packing material fitting structure that prevents the packing material from easily dropping out and facilitates mounting and fixing of the packing material in a packing material fitting place in a part such as a casing or a cover of an engine or a pump with sealing ability. The fitting structure is provided with a packing material having an annular main body portion and a plurality of projections each having a main protruding portion formed to protrude from the annular main body portion and an auxiliary protruding portion formed integrally in the vicinity of the main protruding portion, the projections being formed with an appropriate spacing in the longitudinal direction of the main annular main body portion. The fitting structure is also provided with a casing having formed therein an annular fitting groove for inserting the annular main body portion of the packing material.
    Type: Application
    Filed: February 12, 2009
    Publication date: October 1, 2009
    Applicant: YAMADA MANUFACTURING CO., LTD.
    Inventor: Haruyoshi Yoshida