Patents by Inventor Tasuhiko Shibata

Tasuhiko Shibata 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).

  • Lubricating device for four stroke outboard motor
    Patent number: 5037340
    Abstract: A number of embodiments of outboard motors powered by four cycle internal combustion engines having a dry sump lubrication system wherein the external oil reservoir is positioned externally of the engine. In some embodiments, the reservoir is contained directly in the power head and in another embodiment, the reservoir is contained externally of the outboard motor. The use of such external positioning of the lubricant reservoirs from the drive shaft housing permits the use of a large expansion chamber for the exhaust system in the drive shaft housing. In one embodiment, a pair of expansion chambers are provided therein.
    Type: Grant
    Filed: March 29, 1990
    Date of Patent: August 6, 1991
    Assignee: Sanshi Kogyo Kabushiki Kaisha
    Inventor: Tasuhiko Shibata