Patents by Inventor Kazuhiro Ogawara

Kazuhiro Ogawara 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: 4664595
    Abstract: A novel combination of sliding members operable both under dry (without lubrication) and wet (with lubrication) states, which comprises a first member made of a ceramic and a second member made of hard metal containing at least 75% by weight cemented carbide. This combination is useful as a bearing means in a pump of a vertical or inclined shaft type so as to permit actuation of the motor in the dry state and thereafter to continue operation of the pump with lubrication being provided by part of the liquid being pumped. In certain aspects, the ceramic member may be divided into a plurality of segments.
    Type: Grant
    Filed: September 14, 1984
    Date of Patent: May 12, 1987
    Assignee: Ebara Corporation
    Inventors: Seiichi Tsuji, Kazuhiro Ogawara, Shikuo Koide, Shotaro Mizobuchi