Patents by Inventor Mark Kitapov

Mark Kitapov 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).

  • Indexable central drill insert and cutting tool therefor
    Patent number: 9421622
    Abstract: A central drill insert has a bottom surface, a top surface, and a peripheral surface extending therebetween. At least three lead drill portions protrude outwards from the peripheral surface, each having a drill axis and a plurality of drill cutting edges. A secondary cutting edge is adjacent each lead drill portion, extending along the intersection of the top surface and the peripheral surface, transversely to the respective drill axis. Each secondary cutting edge is spaced apart from the associated drill cutting edges along the drill axis. A dovetail abutment flank is formed on the peripheral surface along the intersection of the top surface and the peripheral surface, extending from each one of the lead drill portions towards the secondary cutting edge associated with another lead drill portion. A cutting tool has an insert pocket for retaining the central drill insert with the operative drill axis aligned with the tool axis.
    Type: Grant
    Filed: January 14, 2014
    Date of Patent: August 23, 2016
    Assignee: Iscar, Ltd.
    Inventors: Eden Segev, Mark Kitapov
  • INDEXABLE CENTRAL DRILL INSERT AND CUTTING TOOL THEREFOR
    Publication number: 20150196961
    Abstract: A central drill insert has a bottom surface, a top surface, and a peripheral surface extending therebetween. At least three lead drill portions protrude outwards from the peripheral surface, each having a drill axis and a plurality of drill cutting edges. A secondary cutting edge is adjacent each lead drill portion, extending along the intersection of the top surface and the peripheral surface, transversely to the respective drill axis. Each secondary cutting edge is spaced apart from the associated drill cutting edges along the drill axis. A dovetail abutment flank is formed on the peripheral surface along the intersection of the top surface and the peripheral surface, extending from each one of the lead drill portions towards the secondary cutting edge associated with another lead drill portion. A cutting tool has an insert pocket for retaining the central drill insert with the operative drill axis aligned with the tool axis.
    Type: Application
    Filed: January 14, 2014
    Publication date: July 16, 2015
    Applicant: Iscar, Ltd.
    Inventors: Eden SEGEV, Mark Kitapov