Patents by Inventor Tsuwao Abe

Tsuwao Abe 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).

  • Patent number: 3944475
    Abstract: A method of electrolytically grinding a workpiece into a desired cylindrical shape by applying a voltage across a grinding wheel rotating at a high speed and a workpiece rotating at a low speed, and supplying an electrolyte between said grinding wheel and workpiece, wherein said workpiece is fed in a tangential direction of said grinding wheel and concurrently rotated at a low speed, and said grinding wheel and workpiece at the outset of the grinding operation are set in such a positional relation that the tangential lines of said grinding wheel and workpiece, extending parallel to the feeding direction of the workpiece and closer to said workpiece and grinding wheel respectively, are located beyond each other with respect to the centers of said grinding wheel and workpiece respectively and spaced from each other by a distance just equal to the desired depth to be cut off of the workpiece.
    Type: Grant
    Filed: January 26, 1973
    Date of Patent: March 16, 1976
    Assignee: Hitachi Seiko Ltd.
    Inventors: Yasushi Mizuhara, Tsuwao Abe, Hiroyuki Hitomi