Patents by Inventor Keith Randerson

Keith Randerson 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).

  • Heat treatment of steel
    Patent number: 3989231
    Abstract: A steel body at red heat or higher temperature is heat treated by sequentially carrying it through a descaling unit, where scale is removed by water jets at an impact force above 2.5 kg/cm.sup.2, and then into an accelerated cooling process such as a quench rig where it is cooled rapidly down through its transformation temperature. If the temperature is below transformation after descaling the steel body is reheated without new scale formation before passing to accelerated cooling. Cooling water and surface quality are thereby improved.
    Type: Grant
    Filed: March 10, 1975
    Date of Patent: November 2, 1976
    Assignee: British Steel Corporation
    Inventor: Keith Randerson