Patents by Inventor Mark O. Hansen

Mark O. Hansen 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: 5778827
    Abstract: An animal lifting mechanism for lifting the rear quarters of a lying cow or the like animal. An angle adjustable yoke has cushioned gripping arms disposed angularly inward. The yoke's included angle is adjusted by a pivoting crank with a hook attached to one of the arms of the yoke. The other yoke arm anchors a chain for engagement with the hook for the adjustment of the yoke angle which is dependent on the size of the animal. The apex of the angled yoke has a rotatable ring which is adapted to be attached to a lifting chain.
    Type: Grant
    Filed: March 24, 1997
    Date of Patent: July 14, 1998
    Inventor: Mark O. Hansen