Patents by Inventor Phillip S. Burkholder

Phillip S. Burkholder 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).

  • Wear indicating friction disc
    Patent number: 7469777
    Abstract: A wear indicating friction disc assembly includes at least two friction discs and may include a plurality of clamping assemblies positioned around a circumference of the friction discs to clamp at least two of the friction discs together. At least one of the clamping assemblies may include a wear indicating washer with a wear indicating portion extending into a portion of one at least one of the friction discs. A height of the wear indicating portion is set to engage the opposing friction member at a predetermined wear level of the friction disc assembly and to emit a detectable signal upon sliding engagement with the opposing friction member.
    Type: Grant
    Filed: October 28, 2005
    Date of Patent: December 30, 2008
    Assignee: Rolls-Royce Corporation
    Inventors: Phillip S. Burkholder, Andrew D. Copeland