Patents by Inventor Deborah M. Boroughs

Deborah M. Boroughs 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).

  • Secondary headbox for cylinder machine
    Patent number: 4474645
    Abstract: A conventional Oliver board forming machine is provided with a second trough which places a second slurry of fibrous material on the Oliver roll to form a board structure of two separate distinct layers.The second trough has an inclined chute forming the side of the trough adjacent the Oliver roll. The chute is pivoted at one end to the second trough and its opposite end rests against the top surface of the fiber deposition on the circumference of the Oliver roll.
    Type: Grant
    Filed: December 22, 1982
    Date of Patent: October 2, 1984
    Assignee: Armstrong World Industries, Inc.
    Inventor: Deborah M. Boroughs