Patents by Inventor William Raeburn Copeland

William Raeburn Copeland 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).

  • Machine for continuously cold working steel bar
    Patent number: 4075880
    Abstract: A method and apparatus for cold working steel lengths on a continuous basis so as to impart the cold working properties to the steel. The steel is twisted and immediately untwisted so as to impart torsional force into the steel. Tensile forces are also imparted simultaneously into the steel.
    Type: Grant
    Filed: November 12, 1976
    Date of Patent: February 28, 1978
    Assignee: Reinforcing & Allied Industries (Proprietary) Limited
    Inventor: William Raeburn Copeland