Patents Assigned to Valve Sales Company, Inc.
  • Sleeved seal for a valve
    Patent number: 5454547
    Abstract: The present invention provides a sleeved seal, as well as the method of installing and machining said sleeved seal. The seal comprises a unitary configuration of a backseat and a sleeve for a stuffing box area, comprising a valve stem bore in communication with a stuffing box area internal to the sleeve seal and a machined backseat and sleeve along the outer diameter of the sleeved seal.
    Type: Grant
    Filed: June 14, 1993
    Date of Patent: October 3, 1995
    Assignee: Valve Sales Company, Inc.
    Inventor: Joel R. Brown