Patents by Inventor Kitamura Takayoshi

Kitamura Takayoshi 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).

  • Tool holder coupling apparatus
    Patent number: 5407308
    Abstract: A tool holder coupling apparatus for attaching a tool holder to a machine spindle, has a tool holder which includes a support portion and a pull stud bolt. The support portion has a tapered surface portion of relatively large diameters, a straight portion of a relatively small diameter near the pull stud bolt, and a relief portion between the taper portion and the straight portion. The machine spindle of the coupling apparatus has a hollow interior defined by a tapered reception interior surface portion corresponding to the tapered surface portion of the tool holder, a straight interior surface portion corresponding to the straight surface portion of the tool holder, and a middle interior surface portion between the tapered surface portion and the straight surface portion. The tool holder attaches to the machine spindle in such a manner that the relief surface portion of the tool holder is spaced from the middle surface portion of the machine spindle.
    Type: Grant
    Filed: July 8, 1993
    Date of Patent: April 18, 1995
    Assignee: Kitamura Machinery Co., Ltd.
    Inventor: Kitamura Takayoshi