Patents by Inventor Ronald D. Cluett

Ronald D. Cluett 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).

  • Control of tubular film size
    Patent number: 4377540
    Abstract: An internally cooled blown film system, for producing a plastic tube, in which the flow rate of the continuous flow of cooling air through the tube is made directly dependent upon deviation of the tube circumference as determined by transmission and detection of ultrasonic waves from the surface of the tube.
    Type: Grant
    Filed: August 24, 1981
    Date of Patent: March 22, 1983
    Assignee: Gloucester Engineering Co., Inc.
    Inventors: Ronald D. Cluett, Richard L. Mitchell