Patents by Inventor Toru Nakahora

Toru Nakahora 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).

  • Bearing member of an internal combustion engine, having a flame sprayed surface
    Patent number: 4420543
    Abstract: In a bearing member of an internal combustion engine, having a flame sprayed surface, molybdenum or tungsten carbide is known as the material of the flame spray. The present invention aims to provide, for example a flame-sprayed piston ring with good heat-and-wear-resistance as well as a property of not seriously wearing the engine cylinder or cylinder liner. The flame sprayed layer of the present invention is composed of mainly ferrochrome powder and plus a powder of a self fluxing alloy, and additionally molybdenum. The piston ring of the present invention is suitable for heavy duty internal combustion engines, in which wear of the piston ring and cylinder are severe.
    Type: Grant
    Filed: November 3, 1980
    Date of Patent: December 13, 1983
    Assignees: Toyota Jidosha Kogyo Kabushiki Kaisha, Teikoku Piston Ring Co., Ltd.
    Inventors: Katsumi Kondo, Yoshio Fuwa, Akira Harayama, Toru Nakahora