Patents by Inventor Danilo Villarroel

Danilo Villarroel 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).

  • Steam generator of a water-tube type
    Patent number: 6640753
    Abstract: A steam generator of water-tubes type for burn fossil fuel where instead of the convective heat transfer of the present day boilers, the water-tubes are heated by means of the mechanism of heat conduction in solids. The water-tubes are embedded in a large piece of a metal or alloy of high thermal conductivity, to which the thermal energy of the combustion gas is transferred from a long horizontal tunnel. Besides, in contradistinction with the present boilers, the water-tubes are straight and of high thermal conductivity.
    Type: Grant
    Filed: December 13, 2001
    Date of Patent: November 4, 2003
    Inventor: Danilo Villarroel
  • Steam generator of a water-tube type
    Publication number: 20020079096
    Abstract: A steam generator of water-tubes type for burn fossil fuel where instead of the convective heat transfer of the present day boilers, the water-tubes are heated by means of the mechanism of heat conduction in solids. The water-tubes are embedded in a large piece of a metal or alloy of high thermal conductivity, to which the thermal energy of the combustion gas is transferred from a long horizontal tunnel. Besides, in contradistinction with the present boilers, the water-tubes are straight and of high thermal conductivity.
    Type: Application
    Filed: December 13, 2001
    Publication date: June 27, 2002
    Inventor: Danilo Villarroel
  • Rotatoty dryer for copper concentrate
    Patent number: 6209225
    Abstract: A rotary dryer for copper concentrate including a tube-shaped heat distributor fixed to the structural drum, with tubular holes in the annular cross section where hot nitrogen is forced to flow. The concentrate is heated up by means of a numerous set of heat transfer bars, which are fixed in the internal periphery of the heat distributor and point into the radial direction. As a consequence of the rotation of the drum, the heat transfer bars also promote the mixing and the transport of the concentrate in the downstream direction.
    Type: Grant
    Filed: October 19, 1999
    Date of Patent: April 3, 2001
    Inventors: Danilo Villarroel, Peter D. Morley