Patents by Inventor Walter Pollock

Walter Pollock 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).

  • Polyester composite propeller spinner and method of making same
    Patent number: 4957415
    Abstract: A polyester composite propeller spinner (1) has a conical wall (2), radial internal support gussets (3), and means for attaching to a propeller hub. Improved impact strength is achieved by combining a vinyl terminated liquid reactive compound with a polyester resin and adding a plurality of fiberglass fibers. The fiberglass fibers are in at least two fiber lengths, having a 2:1 ratio of long to short fibers. A propeller spinner formed from such a composition has an impact strength of greater than 4.84 Kg-m (35 ft-lbs) .
    Type: Grant
    Filed: November 12, 1987
    Date of Patent: September 18, 1990
    Assignee: United Technologies Corporation
    Inventors: Roy D. Paul, deceased, Walter Pollock