Patents by Inventor Drew R. Henderson

Drew R. Henderson 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).

  • Wire temperature controller
    Patent number: 4506146
    Abstract: A method and apparatus are described for controlling the temperature of a heated wire, such as on a wire sealer for plastic film. Temperature control is based upon measurements of changes in the resistance of the wire as it is heated, through bridge circuit and microprocessor techniques.
    Type: Grant
    Filed: February 21, 1984
    Date of Patent: March 19, 1985
    Assignee: Reynolds Metals Company
    Inventors: Richard M. Rice, Robert E. Watling, Drew R. Henderson