Patents by Inventor Kenneth M. Donaldson

Kenneth M. Donaldson 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).

  • Patent number: 7134397
    Abstract: A binding system for applying a vertical compressive force to the refractory walls of a rectangular or circular furnace comprises a compressive member engaging a laterally extending surface of the furnace wall and a support member to which the compressive member is connected. The compressive member preferably comprises a coil spring which acts directly on the laterally extending surface or indirectly through a force-applying member. The force applied by the compressive member is sufficient to control vertical expansion and substantially prevent vertical expansion of the furnace walls due to infiltration of material into the joints between the refractory bricks during operation of the furnace.
    Type: Grant
    Filed: May 26, 2004
    Date of Patent: November 14, 2006
    Assignee: Hatch, Ltd.
    Inventors: Kenneth T. Hutchinson, Kenneth M. Donaldson, Keith E. Joiner, Clarence A. Nichols, Jimmy Sarvinis
  • Patent number: 6724802
    Abstract: A system for supporting and cooling a furnace roof comprised of refractory bricks comprises a plurality of roof support members extending across the furnace and being supported from above the furnace roof. The support members are provided with internal channels for circulation of a cooling fluid, and are provided with side surfaces adapted to support rows or refractory bricks between adjacent roof support members. The system eliminates the need to suspend individual bricks from above the roof, and provides simultaneous support and cooling of the roof structure.
    Type: Grant
    Filed: June 4, 2003
    Date of Patent: April 20, 2004
    Assignee: Hatch Ltd.
    Inventors: Kenneth M. Donaldson, Bert O. Wasmund, Ken T. Hutchinson, Nils W. Voermann, Brett T. Emery