Patents by Inventor Junzo Ishimaru

Junzo Ishimaru 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).

  • Patent number: 5085444
    Abstract: A dust seal for a sliding type bush is interposed between a stationary section and a movable section. The dust seal has a fitting portion fitted to the stationary section, a seal lip portion in sliding contact with the outer circumferential surface of the movable section and a flexible portion interconnecting the fitting portion and the seal lip portion. The dust seal is further provided with an annular projection held in contact with a flange and the outer circumferential surface of the movable section. The seal lip portion is held axially stationarily relative to the movable section.
    Type: Grant
    Filed: June 5, 1990
    Date of Patent: February 4, 1992
    Assignees: Nissan Motor Co., Ltd., Keeper Co., Ltd., Kinugawa Rubber Ind. Co., Ltd.
    Inventors: Takuya Murakami, Toshihiko Kakimoto, Shigeki Dake, Junzo Ishimaru, Yuji Kyoi, Masanao Kameda, Nobuyuki Tamura
  • Patent number: 4337953
    Abstract: A sealing device has a single rubber seal member provided with two oppositely directed seal lips which form a V-shaped cross-section and which are in contact with a spherical surface. Grease is filled in the V-shaped space. A portion of an outer fitting member protrudes inwardly to hold the seal member in place.
    Type: Grant
    Filed: March 7, 1980
    Date of Patent: July 6, 1982
    Assignees: Nissan Motor Co., Ltd., Keeper Co., Ltd.
    Inventors: Hideo Ikeda, Masao Teraoka, Junzo Ishimaru