Patents by Inventor Conny KRAFT

Conny KRAFT 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 bit for improved transport of cuttings
    Patent number: 10344536
    Abstract: A rock drill bit includes a head provided at one end of an elongate shank. A plurality of fluid flushing passageways extend axially from an internal bore extending through the shank with at least one fluid flushing passageway having an exit end at the front face formed as an elongate slot having a length greater than a width to facilitate the rearward transport of cut rock fragment.
    Type: Grant
    Filed: February 3, 2016
    Date of Patent: July 9, 2019
    Assignee: SANDVIK INTELLECTUAL PROPERTY AB
    Inventors: Rasmus Hemph, Conny Kraft
  • DRILL BIT FOR IMPROVED TRANSPORT OF CUTTINGS
    Publication number: 20180066477
    Abstract: A rock drill bit includes a head provided at one end of an elongate shank. A plurality of fluid flushing passageways extend axially from an internal bore extending through the shank with at least one fluid flushing passageway having an exit end at the front face formed as an elongate slot having a length greater than a width to facilitate the rearward transport of cut rock fragment.
    Type: Application
    Filed: February 3, 2016
    Publication date: March 8, 2018
    Inventors: Rasmus HEMPH, Conny KRAFT
  • Down-the-hole hammer drill bit assembly
    Patent number: 9534444
    Abstract: A down-the-hole hammer drill bit assembly includes a foot valve and a drill component having respective abutment regions in the form of cooperating lugs and shoulders that may be engaged by rotation of the valve relative to the drill bit component to allow the lugs and shoulders to overlap radially to lock the valve at the drill component. The assembly is advantageous to allow coupling and decoupling on-site without the need for specific swaging or hydraulic/pneumatic assembly tools.
    Type: Grant
    Filed: November 10, 2014
    Date of Patent: January 3, 2017
    Assignee: SANDVIK INTELLECTUAL PROPERTY AB
    Inventors: Conny Kraft, Anna Nordstrand
  • DOWN-THE-HOLE HAMMER DRILL BIT ASSEMBLY
    Publication number: 20160298390
    Abstract: A down-the-hole hammer drill bit assembly includes a foot valve and a drill component having respective abutment regions in the form of cooperating lugs and shoulders that may be engaged by rotation of the valve relative to the drill bit component to allow the lugs and shoulders to overlap radially to lock the valve at the drill component. The assembly is advantageous to allow coupling and decoupling on-site without the need for specific swaging or hydraulic/pneumatic assembly tools.
    Type: Application
    Filed: November 10, 2014
    Publication date: October 13, 2016
    Applicant: SANDVIK INTELLECTUAL PROPERTY AB
    Inventors: Conny KRAFT, Anna NORDSTRAND