Patents Examined by Richard C. Queizzer
  • Patent number: 3934614
    Abstract: Prefabricated rings comprising several arcuate sections and an expansion device are installed and frictionally retained in an inclined water conduit so as to dissipate the energy of the water descending therein, thereby slowing it to a velocity at which conduit wear and erosion and other harmful effects by the water in the conduit are acceptable.
    Type: Grant
    Filed: September 23, 1974
    Date of Patent: January 27, 1976
    Inventors: Zoltan Elek, George M. Paulsen