Patents by Inventor Vladimir Etlin

Vladimir Etlin 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).

  • Method and apparatus for recirculation of liquids
    Patent number: 5264130
    Abstract: A waste liquid treatment system (10) includes an aeration chamber (10A) and a settling chamber (13). An aerator (11) is disposed within the aeration chamber (10A). A conduit (12) delivers liquid from the aeration chamber (10A) to the settling chamber (13). A gas pocket (P) is provided in the aerating chamber (10A), with at least a portion of the gas pocket (P) being situated beneath the liquid level line (L.sub.13) of the settling chamber (13). Conduits (18 and 19) are provided for delivering liquid from the settling chamber (13) to the aeration chamber (10A). The conduits (18 and 19) have respective outlets (24, 26) which empty into the gas pocket (P) at an elevation below the settling chamber liquid level line (L.sub.13). In one embodiment, a gas pocket (P) is provided in the interior of a tubular component (23) of the aerator (11). In another embodiment, a gas pocket (P') is provided beneath a concave hood (32) which traps gas bubbles (30) introduced into an aeration chamber (110A).
    Type: Grant
    Filed: December 11, 1991
    Date of Patent: November 23, 1993
    Inventor: Vladimir Etlin
  • Apparatus for recirculation of liquids
    Patent number: 5110464
    Abstract: A waste liquid treatment system (10) includes an aeration chamber (10A) and a settling chamber (13). an aerator (11) is disposed within the aeration chamber (10A). A conduit (12) delivers liquid from the aeration chamber (10A) to the settling chamber (13). A gas pocket (P) is provided in the aerating chamber (10A), with at least a portion of the gas pocket (P) being situated beneath the liquid level line (L.sub.13) of the settling chamber (13). Conduits (18 and 19) are provided for delivering liquid from the settling chamber (13) to the aeration chamber (10A). The conduits (18 and 19) have respective outlets (24, 26) which empty into the gas pocket (P) at an elevation below the settling chamber liquid level line (L.sub.13). In one embodiment, a gas pocket (P) is provided in the interior of a tubular component (23) of the aerator (11). In another embodiment, a gas pocket (P') is provided beneath a concave hood (32) which traps gas bubbles (30) introduced into an aeration chamber (110A).
    Type: Grant
    Filed: February 26, 1990
    Date of Patent: May 5, 1992
    Inventor: Vladimir Etlin