Patents by Inventor Sharon L. Keller

Sharon L. Keller 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).

  • Hand truck having tines and an arm for separating flakes from bales of hay and like material
    Patent number: 6059515
    Abstract: A hand truck has a pivoting wedge that initiates a fracture within a bale of hay, straw and similar materials and assists in retaining the material onto the truck. The wedge pivots out of the way when not in use. A toe consists of long slender tines which may serve the dual purpose of sliding under and/or piercing baled material. The toe is removable from the hand truck for shipping and storage purposes. A guard rack is also provided to provide enhanced support for loose material carried by the truck and to prevent the material from getting caught up in the tires or being dragged inadvertently. According to a method of the invention, the hand truck is engaged with the bale, the wedge used to separate a flake, and then the flake is transported on the hand truck.
    Type: Grant
    Filed: April 10, 1998
    Date of Patent: May 9, 2000
    Inventors: William A. Keller, Sharon L. Keller
  • Hand truck
    Patent number: D440727
    Type: Grant
    Filed: March 24, 2000
    Date of Patent: April 17, 2001
    Inventors: William A. Keller, Sharon L. Keller