Patents by Inventor Dan P. Steinberger

Dan P. Steinberger 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: 7021396
    Abstract: A three-point apparatus is disclosed comprising a hitch system, an implement, and a suspension system. The hitch system is comprised of a base and a three-point interface. The base of hitch system is coupled to the three-point interface of the hitch system. The three-point interface is configured to connect to a three-point system, such as the three-point arms of a tractor. The suspension system is coupled between the base of the hitch system and the implement.
    Type: Grant
    Filed: September 5, 2003
    Date of Patent: April 4, 2006
    Assignee: Wil-Rich, LLC
    Inventors: Dan P. Steinberger, Alan L. Redman, Lawrence F. Bernard, Lesley L. Willemssen
  • Patent number: 5595249
    Abstract: A ground leveler attachment for a ground working device comprises a bracket fastened to a shank supporting a ground breaking tool, a carrier arm connected to the bracket, a pair of leg supports in pivotal contact with the carrier arm, a pair of springs biasing the legs supports into pivotal contact with the carrier arm, a pair of leg members extending from the leg supports, and a pair of levelers rotatably mounted upon the leg members and biased into a ground engagement position by the springs. The levelers independently and resiliently retract upon contact with a relatively immoveable object or objects to avoid being broken off from the leg members or severely damaged beyond usefulness.
    Type: Grant
    Filed: September 5, 1995
    Date of Patent: January 21, 1997
    Inventors: Dan P. Steinberger, Jack Oberlander