Patents by Inventor John R. Hollrock

John R. Hollrock 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: 3995759
    Abstract: A golf ball retriever has a picker roll comprised of a plurality of thin discs spaced one from the other along a common central axis by a uniform spacing slightly less than the diameter of a golf ball. The picker roll is readily removable from its supporting frame and, after such removal, the discs making up the roll may be successively disassembled from either end thereof to reach and remove a damaged or broken disc when repairing the roll. The retriever may be particularly designed for use in retrieving balls from water hazards or for retrieving balls from land. In either case, it is highly efficient in retrieving balls, especially from depressions or pockets in the bottom surface of the water hazard or in the surface of the land over which it is moved.
    Type: Grant
    Filed: June 13, 1975
    Date of Patent: December 7, 1976
    Inventors: Richard H. Hollrock, John R. Hollrock