Patents Assigned to Vista Polymers Inc.
  • Removal and reinstallation of bottom entering agitator seals
    Patent number: 4507841
    Abstract: An improved method of removing a seal unit from a process vessel bottom entering agitator assembly and reinstalling a seal unit therein wherein a selectively elevatable table which is movably mounted on a pair of horizontal rails is utilized in lowering and raising seal units during the removal and reinstallation thereof.
    Type: Grant
    Filed: May 17, 1984
    Date of Patent: April 2, 1985
    Assignee: Vista Polymers Inc.
    Inventor: Robert E. Rickert