Patents by Inventor Masashige Uematsu

Masashige Uematsu 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).

  • Solenoid valve
    Patent number: 5779219
    Abstract: The invention particularly relates to a solenoid valve used in a control fluid, and one end of a center pole on the side opposite from a plunger is covered with theend face of a housing, and a communication passage is formed in the housing to communicate a through hole of the center pole with an opening formed on the housing on the side of the plunger. The communication passage has an end face groove and at least one side face groove on the end face and the side face of the housing. A volume of the side face groove is larger than a variation in volume of a space between the plunger and the center pole due to the movement of the plunger, and it is 2.5 times or more of the variation in volume of the space between the plunger and the center pole due to the movement of the plunger.
    Type: Grant
    Filed: June 12, 1996
    Date of Patent: July 14, 1998
    Assignees: Kabushiki Kaisha Riken, Honda Giken Kogyo Kabushiki Kaisha
    Inventors: Hiroshi Miida, Yoshihito Ohya, Motoaki Hayashi, Hisanori Okamoto, Masashige Uematsu