Patents by Inventor Carlos Q. Letelier

Carlos Q. Letelier 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).

  • Flotation device
    Patent number: 7404924
    Abstract: A flotation device for mixing and aerating an ore-containing slurry, comprising a tank having a conical-shaped floor. A vertically positioned flotation assembly is located within the tank. The open bottom of the flotation assembly is shaped is positioned above the conical portion of the floor. The assembly has a middle section having a cage with spaced, vertical bars forming its outer circumference. A rotatable impeller is located within the middle section which draws slurry from the tank through the bottom section and into the middle section and thereafter through the cage and out of assembly. The impeller is attached to a rotatable shaft which is connected at its bottom portion to the upper side of the back plate to rotate the impeller in a plane normal to the shaft. A hollow, vertically situated tubular shaped upper section is located directly above the middle section through which the shaft passes. The upper section has an opening at its lower end which is blocked by the back plate of the impeller.
    Type: Grant
    Filed: January 7, 2004
    Date of Patent: July 29, 2008
    Assignee: FFE Minerals Corp.
    Inventor: Carlos Q. Letelier
  • Flotation device
    Publication number: 20040188896
    Abstract: A flotation device for mixing and aerating an ore-containing slurry, comprising a tank having a conical-shaped floor. A vertically positioned flotation assembly is located within the tank. The open bottom of the flotation assembly is shaped is positioned above the conical portion of the floor. The assembly has a middle section having a cage with spaced, vertical bars forming its outer circumference. A rotatable impeller is located within the middle section which draws slurry from the tank through the bottom section and into the middle section and thereafter through the cage and out of assembly. The impeller is attached to a rotatable shaft which is connected at its bottom portion to the upper side of the back plate to rotate the impeller in a plane normal to the shaft. A hollow, vertically situated tubular shaped upper section is located directly above the middle section through which the shaft passes. The upper section has an opening at its lower end which is blocked by the back plate of the impeller.
    Type: Application
    Filed: January 7, 2004
    Publication date: September 30, 2004
    Inventor: Carlos Q. Letelier