Patents by Inventor Koichi Ohsawa

Koichi Ohsawa 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 coil apparatus
    Patent number: 5059935
    Abstract: A solenoid apparatus having a bobbin, a core and a coil wound on a cylindrical body of the bobbin. A post of the bobbin has a slit elongated along the post and a groove. The end portion of coil is wound around the outer surface of the post by a predetermined space, and is welded to the core, so that the length of the end portion between the post and a welded portion becomes longer. The central line l.sub.1 of the groove is eccentric to the axis l.sub.2 of the post in such a manner that a radius of curvature in the end portion of the coil becomes larger.
    Type: Grant
    Filed: August 8, 1990
    Date of Patent: October 22, 1991
    Assignee: Nippondenso Co., Ltd.
    Inventors: Koichi Ohsawa, Masanori Ohmi