Patents by Inventor Robert A. Knowles

Robert A. Knowles 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).

  • Laminated beam press
    Patent number: 3990937
    Abstract: In a laminated beam press apparatus a predetermined number of wooden members are conveyed through an adhesive spreader and then are individually transferred laterally into a re-orienting transfer conveyor. The re-orienting transfer conveyor is then moved vertically downward to deposit the collected wooden pieces in a press section. The press platens are closed in order to cure the beam. After curing, the press is open and the re-orienting transfer conveyor then moves vertically upward through the press section, thereby removing the laminated beam.
    Type: Grant
    Filed: December 8, 1975
    Date of Patent: November 9, 1976
    Assignee: Weyerhaeuser Company
    Inventor: Robert A. Knowles