Patents by Inventor Patrick G. Butler

Patrick G. Butler 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).

  • Air filter assembly
    Patent number: 5895510
    Abstract: In an air filter assembly a non-metallic air filter media is clamped between a pair of opposed metal end flanges, one of which is mounted by a threaded mounting rod in alignment with an opening through a horizontal panel. A metal sleeve integral with one of the end flanges stiffens the assembly and prevents the filter media from collapsing. The air filter assembly is used with numerous similar air filter assemblies to filter inlet combustion air for large gas turbine engines.
    Type: Grant
    Filed: October 22, 1997
    Date of Patent: April 20, 1999
    Assignee: Dana Corporation
    Inventors: Patrick G. Butler, Burt O. Browning, Wesley B. Garner, Paul A. Rogers, Timothy J. Winkeler