Patents by Inventor Albert J. Kristoff

Albert J. Kristoff 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).

  • Method and apparatus for installing or replacing a furnace tap hole insert
    Patent number: 6663825
    Abstract: An apparatus for replacing a tap hole insert in a furnace includes a drill detachably mounted to a drive shaft in a boom arm of a utility machine with the drill adapted to remove the existing tap hole inserts to be replaced from outside of the furnace interior, and a tap hole insert tool detachably mounted to the boom arm of the utility machine with the tap hole insert tool adapted to hold and insert tap hole inserts into the furnace tap hole from outside the furnace interior. The drill is provided with a locking pattern having alternating inserts.
    Type: Grant
    Filed: September 30, 2002
    Date of Patent: December 16, 2003
    Assignee: Louis A. Grant, Inc.
    Inventors: Louis A. Grant, Jr., Albert J. Kristoff
  • Method and apparatus for installing or replacing a furnace tap hole insert
    Publication number: 20030123942
    Abstract: An apparatus for replacing a tap hole insert in a furnace includes a drill detachably mounted to a drive shaft in a boom arm of a utility machine with the drill adapted to remove the existing tap hole inserts to be replaced from outside of the furnace interior, and a tap hole insert tool detachably mounted to the boom arm of the utility machine with the tap hole insert tool adapted to hold and insert tap hole inserts into the furnace tap hole from outside the furnace interior. The drill is provided with a locking pattern having alternating inserts.
    Type: Application
    Filed: September 30, 2002
    Publication date: July 3, 2003
    Inventors: Louis A. Grant, Albert J. Kristoff
  • Method and apparatus for replacing a tap hole liner in a basic oxygen furnace/QBOP/AOD and all other types of converter vessels
    Publication number: 20010045691
    Abstract: An apparatus and method for replacing the tap hole liner of a Basic Oxygen Furnace (BOF/QBOP/AOD and all other types of converter vessels) includes a multi-purpose movable utility vehicle, a water-cooled self-centering drill removably attached to the multi-purpose utility vehicle, and a tap hole liner installation guide removably attached to the multi-purpose utility vehicle in place of the water-cooled self-centering drill attachment.
    Type: Application
    Filed: March 30, 2001
    Publication date: November 29, 2001
    Applicant: Louis A. Grant, Inc.
    Inventors: Louis A. Grant, Albert J. Kristoff
  • Crustbreaking assembly for aluminum electrolysis cells
    Patent number: 5294318
    Abstract: A crustbreaking assembly comprising elongated rails supported on a frame and a carriage moveable along the length of the rails. A slide assembly pivotally mounted on the carriage for rotation about an axis which is substantially parallel to the rails. A hammer assembly mounted on the slide assembly with a longitudinal axis substantially perpendicular to the rails and including a reciprocable cutting bit which reciprocates along the longitudinal axis of the hammer assembly.
    Type: Grant
    Filed: July 15, 1992
    Date of Patent: March 15, 1994
    Assignee: Louis A. Grant, Inc.
    Inventors: Louis A. Grant, Jr., Albert J. Kristoff