Patents by Inventor Hisashi Ikehara

Hisashi Ikehara 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).

  • Chuck assembly
    Patent number: 6264208
    Abstract: To provide a chuck assembly which is superior in practical usability and workability in clamping and fixing a tool to a spindle without fail and with ease by lever-operation of a specialized operational jig, a taper portion is provided on at least one of an inner circumferential wall of the sleeve portion and an outer circumferential wall of the tool clamping portion, the tool clamping portion and the sleeve portion are brought into contact with each other at the taper portion, a retainer portion for retaining the operational jig is provided on the sleeve portion, a support portion is provided in a predetermined position of the chuck assembly body for supporting the operational jig retained at the retainer portion, the sleeve portion retained by the operational jig is slidingly moved relative to the tool clamping portion when the operational jig is lever-operated in a taper direction of the taper portion by using the support portion as a fulcrum, and the opening portion of the tool clamping portion is widened
    Type: Grant
    Filed: October 7, 1999
    Date of Patent: July 24, 2001
    Assignee: Ukiwa Seiko Kabushiki Kaisha
    Inventors: Kazuo Sakamaki, Akira Sakamaki, Tetuo Seki, Hisashi Ikehara