Patents by Inventor Takao Takemura

Takao Takemura 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).

  • Horizontal cylinder arrangement for an internal combustion engine
    Patent number: 5203294
    Abstract: A four-cycle internal combustion engine which has one or more horizontally disposed cylinder bores and a piston supported for horizontal reciprocation in each cylinder bore. Each piston includes a ring structure wherein a plurality of compression rings are fitted in corresponding parallel grooves formed on the outer periphery of each piston. A positioning pin for each compression ring is press fitted into the groove of the associated ring in its end gap for positioning and holding the end gap of each compression ring at a point along the outer periphery of the piston outside of the area under the piston axis.
    Type: Grant
    Filed: March 25, 1992
    Date of Patent: April 20, 1993
    Assignee: Sanshin Kogyo Kabushiki Kaisha
    Inventors: Takao Takemura, Yoshikazu Yamaoka, Takahide Watanabe