Patents by Inventor John R. Haan

John R. Haan 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).

  • Patent number: 4256419
    Abstract: In a silage distributor assembly of the type in which a spreader plate, in the path of silage issuing from the discharge end of a fill tube, has hinged to its outer, free margin a curved deflector plate, there is disclosed a stop member which prevents the kinetic energy of the material moving out of the fill tube from lifting the curved plate to a raised position yet permits the plate to be freely moved to its raised position by means of a cable extending to the base of the silo.
    Type: Grant
    Filed: December 14, 1979
    Date of Patent: March 17, 1981
    Inventor: John R. Haan
  • Patent number: 4023688
    Abstract: Disclosed is an apparatus for completely filling a silo from a central point at the top of the silo. Silage is dropped from a centered discharge opening in a fill tube extending from the upper margin of the silo sidewall. The fill tube is articulated intermediate its length and the innermost portion is swung sidewardly when the apex of the deposited silage reaches the discharge opening. A spreader plate is then positioned in cooperative relation with the open end of the stationary outermost portion of the fill pipe and directs the final volume of silage (necessary to fill the silo) toward the far wall area of the silo. A locking member carried by the spreader plate assures that the two sections of the fill pipe are held in longitudinal axial alignment.
    Type: Grant
    Filed: April 29, 1976
    Date of Patent: May 17, 1977
    Assignee: Even Flo Silage Distributor, Inc.
    Inventors: Andrew S. Freeman, John R. Haan