Patents by Inventor Robert R. Strange

Robert R. Strange 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 of making briquettes and product
    Patent number: 4369062
    Abstract: The method of making briquettes having approximately 50% metallic fines, 41% mill scale, 2% bentonite, 3% pitch residue, 2% burnt lime fines, and 2% molasses; and briquettes having that composition.
    Type: Grant
    Filed: September 28, 1981
    Date of Patent: January 18, 1983
    Inventor: Robert R. Strange
  • Mold bottom and stool protector construction
    Patent number: 4333630
    Abstract: A laminated plate assembly (17) for protecting the mold stool (11) or bottom (125) of an ingot mold (10 or 100) during the pouring of molten metal therein, the assembly comprising spaced-apart plates (20, 21 and 22) secured together by embossments (24) or the like.
    Type: Grant
    Filed: November 14, 1980
    Date of Patent: June 8, 1982
    Inventor: Robert R. Strange
  • Method for ingot mold repair
    Patent number: 4120345
    Abstract: A method for ingot casting using a vertical, open-ended mold removably positioned on a mold stool, a closed-bottom mold or a plug-bottom mold wherein steel particles are used to fill a relieved portion of the bottom typically resulting from erosion thereof during casting; a metal plate is used to close this relieved portion, thereby preventing comingling of the steel particles and metal being cast; this practice prolongs the life of mold stools and mold bottoms without requiring expensive replacement.
    Type: Grant
    Filed: November 3, 1977
    Date of Patent: October 17, 1978
    Assignee: Crucible Inc
    Inventors: Robert R. Strange, James M. Zimmer