Patents by Inventor Noritoshi Oshima

Noritoshi Oshima 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).

  • Electromagnetic vibrating apparatus
    Patent number: 5239219
    Abstract: An electromagnetic feeder comprises a movable core secured to one mass of two masses connected by a resilient member, two fixed cores secured to the other mass so that said fixed cores are positioned on opposite sides of said movable core, two exciting coils wound about said two fixed cores, and a control circuit for alternately applying a phase-controlled current to said exciting coils, the mass to which said movable core is secured being connected to the object to be vibrated.
    Type: Grant
    Filed: January 23, 1991
    Date of Patent: August 24, 1993
    Assignee: Murakami Seiki Mfg., Co. Ltd.
    Inventors: Eiji Matsumoto, Noritoshi Oshima