Patents by Inventor Bernard L. Tews

Bernard L. Tews 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).

  • Railcar brake tester
    Patent number: 5038605
    Abstract: A brake tester for measuring static force levels of the brake shoes and hand brake, and the pressure level of the brake cylinder of a railcar. Brake shoe load cells are used to measure brake shoe forces by creating point contact with the railcar wheel and undergoing deflection during application of a brake force. A clevis load cell measures hand brake force by simulating the clevis and produces an output from a plurality of strain gauges.
    Type: Grant
    Filed: August 16, 1990
    Date of Patent: August 13, 1991
    Assignee: Trinity Industries, Inc.
    Inventors: Bernard L. Tews, Phillip G. Przybylinski