Patents by Inventor Eizi Hiramatu

Eizi Hiramatu 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).

  • Device for controlling evaporative emission from an automobile
    Patent number: 4331120
    Abstract: A device for controlling evaporative emission from an automobile, which device comprises, a casing accommodating fuel gas absorbing agents, a tank port adapted to communicate with a fuel tank of the automobile and having a first check valve for permitting the flow of fuel gas from the fuel tank into the casing, and a purge port adapted to communicate with an internal combustion engine and having a second check valve for permitting the flow of fuel gas from the casing to the engine. Each of the check valves of the first and second check valves comprises a check ball of metal, and a valve seat engaging with the check ball and being made of thin metal plate formed in one body with a reinforcement of plastic.
    Type: Grant
    Filed: July 16, 1979
    Date of Patent: May 25, 1982
    Assignees: Toyota Jidosha Kogyo Kabushiki Kaisha, Nippon Denso Kabushiki Kaisha, Aisan Industry Co. Ltd.
    Inventors: Eizi Hiramatu, Yasushi Nakagawa, Hidenori Sato, Shigeru Yoshida