Patents by Inventor Deiter Rief

Deiter Rief 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).

  • Safety fitting for a vacuum orifice in a swimming pool
    Patent number: 4817991
    Abstract: A fitting is disclosed for covering the vacuum orifice formed in the wall of the swimming pool. The fitting includes a hollow body member connectable to the vacuum orifice and having an opening for receiving a vacuum hose. A spring loaded cap is connected to the body member and is designed to seal the orifice when the cap is in the closed position. A safety locking mechanism is provided to prevent the inadvertent opening of the fitting. In the preferred embodiment, the cap further includes a lug for engaging a vacuum hose to enhance the connection between the hose and the fitting.
    Type: Grant
    Filed: June 19, 1987
    Date of Patent: April 4, 1989
    Assignee: Arneson Products, Inc.
    Inventors: Herman E. Frentzel, Deiter Rief
  • Underwater pool cleaning apparatus
    Patent number: D304505
    Type: Grant
    Filed: October 2, 1986
    Date of Patent: November 7, 1989
    Assignee: Aquanaut, Inc.
    Inventors: Robert W. Maier, Charles J. Patterson, Deiter Rief, John Gard, Herman E. Frentzel