Patents by Inventor Ralph M. Cassell

Ralph M. Cassell 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 manufacturing springs, including the production of wire therefor
    Patent number: 4568394
    Abstract: The method of manufacturing coiled springs comprising forming steel rod by hot rolling, oil-tempering the rod as produced in the hot rolling operation, without drawing it, by passing it through an austenitizing step, an oil quenching step and a tempering step, cold-drawing the resultant oil-tempered rod into wire, and winding springs from the wire.
    Type: Grant
    Filed: July 2, 1984
    Date of Patent: February 4, 1986
    Assignee: Laclede Steel Company
    Inventor: Ralph M. Cassell
  • Method of manufacturing springs, including the production of rod therefor
    Patent number: 4174981
    Abstract: The method of manufacturing coiled springs from hot-rolled steel rod (as distinguished from drawn wire) wherein round steel rod is formed by hot rolling with the gauge of the rod within a tolerance of .+-.0.010 inch and the rod not out of round more than a maximum of 0.015 inch, oil tempering the rod as produced in the hot rolling operation, without drawing it, by passing it through an austenitizing step, an oil quenching step and a tempering step, and winding springs from the oil tempered rod.
    Type: Grant
    Filed: February 6, 1978
    Date of Patent: November 20, 1979
    Assignee: Laclede Steel Company
    Inventor: Ralph M. Cassell