Patents by Inventor William F. Pralle

William F. Pralle 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).

  • Water jet driven rotary sprinkler
    Patent number: 4596362
    Abstract: A lawn sprinkler for a garden hose is provided and consists of a pair of oppositely extending tubular arms rotatable with respect to a tubular base member, a pair of nozzles each mounted on an arm, a device for adjusting the position of each nozzle with respect to each arm and a pair of water deflectors. Each water deflector is adjustable with respect to each nozzle to receive a jet of water obliquely for purpose of giving motion to each arm and directing the jet of water in any desired direction.
    Type: Grant
    Filed: November 6, 1984
    Date of Patent: June 24, 1986
    Inventors: William F. Pralle, George Spector