Patents by Inventor Robert E. Rickert

Robert E. Rickert 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).

  • 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