Patents by Inventor Hideki OGURI

Hideki OGURI 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).

  • Drill and method of drilling a hole
    Patent number: 10065250
    Abstract: A drill includes a shank and a body having an outer peripheral surface with a certain outer diameter and a distal end tapered surface of a certain distal end angle. The drill includes a pilot shaft portion projecting from the distal end tapered surface of the body and having a diameter smaller than the body and having an outer peripheral surface of a certain outer diameter. The drill further includes an odd number of twisted grooves extending from the outer peripheral surface of the body to the outer peripheral surface of the pilot shaft portion at a certain twisted angle, an odd number of main cutting edges formed on the distal end tapered surface of the body by forming of the twisted grooves, and an odd number of auxiliary cutting edges formed on the distal end tapered surface of the pilot shaft portion by forming of the twisted grooves.
    Type: Grant
    Filed: February 10, 2014
    Date of Patent: September 4, 2018
    Assignees: Kuritakoki Co., Ltd., Utsunomiya Seisakusho Co., Ltd.
    Inventor: Hideki Oguri
  • DRILL AND METHOD OF DRILLING A HOLE
    Publication number: 20160346846
    Abstract: A drill includes a shank and a body having an outer peripheral surface with a certain outer diameter and a distal end tapered surface of a certain distal end angle. The drill includes a pilot shaft portion projecting from the distal end tapered surface of the body and having a diameter smaller than the body and having an outer peripheral surface of a certain outer diameter. The drill further includes an odd number of twisted grooves extending from the outer peripheral surface of the body to the outer peripheral surface of the pilot shaft portion at a certain twisted angle, an odd number of main cutting edges formed on the distal end tapered surface of the body by forming of the twisted grooves, and an odd number of auxiliary cutting edges formed on the distal end tapered surface of the pilot shaft portion by forming of the twisted grooves.
    Type: Application
    Filed: February 10, 2014
    Publication date: December 1, 2016
    Inventor: Hideki OGURI