Patents by Inventor Gaius D. Kazen

Gaius D. Kazen 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).

  • Flue insert to control exhaust gases
    Patent number: 5666942
    Abstract: A flue insert which includes a helical vane having an open center axial area and means for mounting the helical vane within a furnace flue stack. The helical vane rotates counterclockwise, i.e. it rotates in a counterclockwise direction from the furnace/boiler end to the atmospheric end of the flue. The helical vane rotates for approximately 540.degree., and has a width which is equal to approximately one-third of the diameter of the flue.
    Type: Grant
    Filed: August 31, 1993
    Date of Patent: September 16, 1997
    Inventor: Gaius D. Kazen
  • Flue insert to control exhaust gases
    Patent number: 5411013
    Abstract: A flue insert (50) for insertion into a flue stack (12). The flue insert includes a sleeve (52) that is inserting into the stack so as to function as part of the stack. A vane (54) is disposed in the sleeve. One end of the vane is fixedly attached to the sleeve. The opposed end of the vane is adjustably attached to the sleeve so that after the insert is installed, the overall length of the vane can be selectively set.
    Type: Grant
    Filed: December 29, 1993
    Date of Patent: May 2, 1995
    Inventor: Gaius D. Kazen