Patents by Inventor Duane A. Drost

Duane A. Drost 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: 6550746
    Abstract: The invention is a system for removing dead animals from a building having a ceiling structure, a plurality of parallel elongated pens, and a dead animal depository station. The system includes a track that extends horizontally over the pens and is suspended from the ceiling structure. A carriage assembly is mounted on the track for travel along the track. Rotatably secured to the carriage assembly about a vertical axis is a winch apparatus that extends downwardly from the carriage. Secured to the winch is a flexible means that moves vertically with respect to the winch which is attached to dead animals for raising the animal above the pen and lowering the animal to the dead animal depository.
    Type: Grant
    Filed: June 12, 2001
    Date of Patent: April 22, 2003
    Inventor: Duane A. Drost
  • Publication number: 20020187021
    Abstract: A hay bale pick-up device having a trailer with a deck, side wall, side bar, front wall, and tail gate; a powered track with a front end terminating in an inclined ground engaging track for transporting hay bales onto the deck; and a means for laterally moving the side bar across the track to laterally move hay bales onto the deck.
    Type: Application
    Filed: June 12, 2001
    Publication date: December 12, 2002
    Inventor: Duane A. Drost
  • Publication number: 20020185638
    Abstract: The invention is a system for removing dead animals from a building having a ceiling structure, a plurality of parallel elongated pens, and a dead animal depository station. The system includes a track that extends horizontally over the pens and is suspended from the ceiling structure. A carriage assembly is mounted on the track for travel along the track. Rotatably secured to the carriage assembly about a vertical axis is a winch apparatus that extends downwardly from the carriage. Secured to the winch is a flexible means that moves vertically with respect to the winch which is attached to dead animals for raising the animal above the pen and lowering the animal to the dead animal depository.
    Type: Application
    Filed: June 12, 2001
    Publication date: December 12, 2002
    Inventor: Duane A. Drost