Patents by Inventor Bret A. Tarnowski

Bret A. Tarnowski 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).

  • Blast hole drill bit carousel and a blast hole drill including a blast hole drill bit carousel
    Patent number: 8342236
    Abstract: A drill bit carousel for use on a blast hole drill includes a base structure that movably supports a plurality of drill receptacles. The drill bit carousel is movable between a storage position and at least one exchange position. In the exchange position, one of the drill receptacles is aligned with a centerline of a drill pipe string. In the storage position, the drill bit carousel is clear of the centerline of the drill pipe string.
    Type: Grant
    Filed: September 15, 2009
    Date of Patent: January 1, 2013
    Assignee: Bucyrus International Inc.
    Inventors: David T. Bienfang, Bret A. Tarnowski, Nathaniel A. Falendysz
  • Tool wrench assembly
    Patent number: 7975760
    Abstract: A tool wrench assembly for a blasthole drill includes a fork pivotally fixed relative to at least one actuator that moves the fork between an engaged and a disengaged position.
    Type: Grant
    Filed: February 6, 2009
    Date of Patent: July 12, 2011
    Assignee: Bucyrus International, Inc.
    Inventors: Bret A. Tarnowski, David T. Bienfang
  • TOOL WRENCH ASSEMBLY
    Publication number: 20100200258
    Abstract: A tool wrench assembly for a blasthole drill includes a fork pivotally fixed relative to at least one actuator that moves the fork between an engaged and a disengaged position.
    Type: Application
    Filed: February 6, 2009
    Publication date: August 12, 2010
    Inventors: Bret A. Tarnowski, David T. Bienfang
  • Blast Hole Drill Bit Carousel And A Blast Hole Drill Including A Blast Hole Drill Bit Carousel
    Publication number: 20100071958
    Abstract: A drill bit carousel for use on a blast hole drill includes a base structure that movably supports a plurality of drill receptacles. The drill bit carousel is movable between a storage position and at least one exchange position. In the exchange position, one of the drill receptacles is aligned with a centerline of a drill pipe string. In the storage position, the drill bit carousel is clear of the centerline of the drill pipe string.
    Type: Application
    Filed: September 15, 2009
    Publication date: March 25, 2010
    Inventors: David T. Bienfang, Bret A. Tarnowski, Nathaniel A. Falendysz