Patents by Inventor Bruce M. Costa

Bruce M. Costa 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).

  • Ball valve having easy maintenance features for extreme environments
    Patent number: 4562860
    Abstract: A valve assembly is provided which is particularly suitable for operation and maintenance under extreme environments. It includes a valve body, a ball valve member rotatably mounted within the valve body, a bonnet removably secured to the valve body, and seat retaining asemblies removably secured to the bonnet. Upon removal of the bonnet, the valve member and all internals are also removed as a unit so that they may be serviced at a convenient location. The seat retaining assemblies may include inclined surfaces which seat against oppositely inclined surfaces defined within the valve body. An alignment plate is secured to the seat retaining assemblies to insure proper sealing.
    Type: Grant
    Filed: July 6, 1983
    Date of Patent: January 7, 1986
    Assignees: Wilmington Trust Company, William J. Wade
    Inventors: John F. Walter, Bruce M. Costa, Harry E. Eminger