Patents by Inventor Cesar F. Chaul

Cesar F. Chaul 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: 4962792
    Abstract: The clogging by impurities and the annoying noise caused by the rattling action of the internal parts of a fluids rate of flow saving or limiting device comprising a tubular fitting having an inlet end of larger diameter and an outlet end of smaller diameter with an internal shoulder formed therebetween, and a needle type shutter actuated by a spring concentrically arranged within said tubular fitting, are avoided by the improvement comprising a shutter formed by an upper larger diameter body and a lower smaller diameter body arranged concentrically within said fitting, a circular flange on the upper end of said upper body, a shoulder between said upper and lower bodies, said shoulder comprising a plurality of downwardly extending projections, at least one surface groove extending longitudinally of said upper body to permit free non-clogging passage of the fluid, and a soft material washer sandwiched between a pair of rigid washers supported on the internal shoulder of said fitting, said soft washer projectin
    Type: Grant
    Filed: June 2, 1989
    Date of Patent: October 16, 1990
    Inventor: Cesar F. Chaul