Patents by Inventor Haruo Ohashi

Haruo Ohashi 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).

  • Electromagnetically-operated fixed displacement pump
    Patent number: 4272225
    Abstract: In an electromagnetically-operated fixed displacement pump, a lubricating oil storage tank and a communicating hole with one end opening upon the bottom of the tank are formed in a pump body, the other end of the hole in the pump body communicating with one end of another communicating hole extending through a movable armature in the axial direction thereof, the other end of the communicating hole in the armature opening into an electromagnetic gap between a fixed armature and the movable armature.
    Type: Grant
    Filed: March 30, 1979
    Date of Patent: June 9, 1981
    Assignee: Iwaki Co., Ltd.
    Inventors: Yoshiaki Fujinaka, Haruo Ohashi, Masahito Miyazaki, Kenzi Mizuno, Fukuzi Kuwabara