Patents by Inventor Yukimasa Akashi

Yukimasa Akashi 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).

  • Tap holder
    Patent number: 4514115
    Abstract: A tap holder adapted for attachment to the main spindle of machine tool to cut internal threads in a workpiece, the tap holder including a floating mechanism by which the tap holding spindle is smoothly moved in the axial direction, the floating mechanism being featured by a single coil spring compressible in association with the axial movement of the tap holding spindle, and by its feasibility that a possible error occurring between the lead of the tap and the feed of the main spindle of the machine tool is automatically corrected.
    Type: Grant
    Filed: September 1, 1982
    Date of Patent: April 30, 1985
    Assignee: Showa Seiki Kabushiki Kaisha
    Inventor: Yukimasa Akashi