Patents Assigned to Seal Technology Systems
  • Patent number: 5072950
    Abstract: A valve stem seal assembly comprises a valve stem seal having an external flange and a sealing lip, a washer having a tapered axial bore therein, a spring extending between the external flange of the seal and the washer, and a member engaging the seal and the washer and holding the seal, spring and washer together. The member has a lower tubular portion, an intermediate conical portion engaged by the sealing lip of the valve stem seal, and flexible fingers at the upper end of the member which are in engagement with the tapered axial bore in the washer.
    Type: Grant
    Filed: August 24, 1990
    Date of Patent: December 17, 1991
    Assignee: Seal Technology Systems
    Inventors: Antony Littleproud, David Hill