Patents by Inventor John F. Oettinger

John F. Oettinger 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).

  • Digester strainer locking assembly
    Patent number: 4331509
    Abstract: A digester strainer locking assembly for strainer panels supported interiorly of a generally cylindrical digester vessel wherein a socket member receives a clamp lock member and a lock member all wedgingly interrelated to clamp the panels releasably in place.
    Type: Grant
    Filed: July 7, 1980
    Date of Patent: May 25, 1982
    Assignee: ESCO Corporation
    Inventor: John F. Oettinger
  • Rotary feeder valve
    Patent number: 3993227
    Abstract: A rotary feeder valve adapted to feed wood chips into a digester wherein a rotor assembly which includes a pocket-body interference fitted to a shaft is further uniquely pinned thereto to stabilize the body and shaft under unforeseen and abnormal operating conditions.
    Type: Grant
    Filed: September 8, 1975
    Date of Patent: November 23, 1976
    Assignee: Esco Corporation
    Inventor: John F. Oettinger