Patents by Inventor Robert Gronlund

Robert Gronlund 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: 5510020
    Abstract: A swimming pool skimmer apparatus having a skimmer arm with one end positioned inside the opening of a swimming pool weir and held in position by a pair of spring loaded pins, and the opposite end is shaped in the form of a hook to direct some of the water current flow along the line of the skimmer arm and toward the swimming pool weir. A screen is held in an opening formed within the skimmer arm along the greater part of the length and width of the skimmer arm. With the flow of the swimming pool inlets directed in one direction, a circular, counter clockwise current is set up and the pool skimmer of the invention diverts the debris into the swimming pool weir.
    Type: Grant
    Filed: September 23, 1994
    Date of Patent: April 23, 1996
    Inventor: Robert Gronlund