Patents by Inventor Willy Kupper

Willy Kupper 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: 4442979
    Abstract: A spreader of granulated and liquid material, for a vehicle comprises, a granulated material vessel having three feed troughs extending substantially along a longitudinal axis of the vehicle. A conveyor with hydraulic motor is positioned in each feed trough and feeds granulated material to three distributor units. A liquid material vessel is also provided which includes liquid supply lines to each of the distributor units. Each liquid supply line has a hydraulic motor-powered pump. Two of the feed troughs which are positioned on either sides of the longitudinal axis of the vessel include granulated material feed lines connected between the respective feed trough and its associated distributor unit so that a distributor plate of each of the associated distributor units is positionable beyond the side contours of the vehicle, and on either side of the vehicle, to increase the potential width of coverage with the spread material.
    Type: Grant
    Filed: September 21, 1981
    Date of Patent: April 17, 1984
    Inventor: Willy Kupper