Patents by Inventor Louis A. Prue

Louis A. Prue 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: 4969917
    Abstract: A device permitting movement of a cow's tail while the cow is in its stall and which will maintain the tail elevated when the animal is lying down to avoid tail contact with the animal's droppings. The device includes an elongated elastic cord for extension from a fixed overhead point to an integral tubular sleeve wrapped on the animal's tail near its end to absorb the shock of directional change when the animal swings its tail. The sleeve is adapted to retain its normal position adjacent the tail's distal end and to slip free from its engagement on the tail if the animal breaks free from its stall, thereby avoiding tail injury.
    Type: Grant
    Filed: May 15, 1989
    Date of Patent: November 13, 1990
    Assignee: Gaston Poulin
    Inventor: Louis A. Prue
  • Patent number: 4967693
    Abstract: A device mounted above a cow in its stall for causing the animal to move rearwardly by applying pressure to its shoulders when the animal arches its back for the purpose of defecating or urinating. By moving rearwardly, the animal's droppings will be deposited in the stall's gutter. The device includes a pair of spaced rod members interconnected by a connecting rod. One of the rod members has an integral elongated bar at its lower end situated horizontally above the animal's shoulders and extends normal to the stall's length. The connecting rod includes pivot shafts on each end with each supporting a pair of knob-controlled mating clutch members for manually effecting their release and binding engagement. Manual control of the clutch members permits the rod members and connecting rod to readily located the elongated bar in any desired position.
    Type: Grant
    Filed: July 27, 1989
    Date of Patent: November 6, 1990
    Assignee: Gaston Poulin
    Inventor: Louis A. Prue