Patents by Inventor John P. Lacy

John P. Lacy 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).

  • Bending of continuously cast steel with corrugated rolls to impart compressive stresses
    Patent number: 4844145
    Abstract: An improved process for continuously casting a strand of steel comprising the bending of the steel with at least one corrugated roll. The strand is preferably pushed between a corrugated roll and a smooth roll by gravity or drive rolls to impact only compressive stresses to the strand. A curved strand cast with a curved mold can be straightened between two corrugated rolls having different surface corrugations to impart compressive stresses.
    Type: Grant
    Filed: November 3, 1987
    Date of Patent: July 4, 1989
    Assignee: Steel Metallurgical Consultants, Inc.
    Inventor: John P. Lacy
  • Plate quenching method
    Patent number: 4148673
    Abstract: A method and apparatus for quenching steel plates after they come from an austenitizing furnace. The plates are stopped and their surfaces flooded with large volumes of water applied almost instantaneously. The valves which control water application are operated by pneumatic operators so that they move from a closed position to a full open position almost instantaneously. The invention overcomes the tendency of plates to buckle during quenching and cools the plate at the maximum rate for the water pressure and volume available.
    Type: Grant
    Filed: February 27, 1974
    Date of Patent: April 10, 1979
    Assignee: United States Steel Corporation
    Inventor: John P. Lacy