Patents Assigned to Manifold Systems, Inc.
  • Plug valve with metal-to-metal sealing
    Patent number: 5050843
    Abstract: A plug valve with metal-to-metal annular sealing rings with a V shaped cross section to provide a resilient force for sealingly engage with respect to a horizontal sealing surface and a nearly vertical rotatable sealing surface and/or with a vertical sealing surface.
    Type: Grant
    Filed: August 15, 1990
    Date of Patent: September 24, 1991
    Assignee: Manifold Systems, Inc.
    Inventor: Robert T. Brooks