Patents by Inventor Duncan Callaway

Duncan Callaway 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).

  • Two stage indirect evaporative cooling system
    Patent number: 6931883
    Abstract: A two stage indirect evaporative cooler that moves air from a blower mounted above the unit, vertically downward into dry air passages in an indirect stage and turns the air flow horizontally before leaving the indirect stage. After leaving the dry passages, a major air portion travels into the direct stage and the remainder of the air is induced by a pressure drop in the direct stage to turn 180° and returns horizontally through wet passages in the indirect stage and out of the unit as exhaust air.
    Type: Grant
    Filed: December 18, 2003
    Date of Patent: August 23, 2005
    Assignee: Davis Energy Group, Inc.
    Inventors: Richard C. Bourne, Brian E. Lee, Duncan Callaway
  • TWO STAGE INDIRECT EVAPORATIVE COOLING SYSTEM
    Publication number: 20050132738
    Abstract: A two stage indirect evaporative cooler that moves air from a blower mounted above the unit, vertically downward into dry air passages in an indirect stage and turns the air flow horizontally before leaving the indirect stage. After leaving the dry passages, a major air portion travels into the direct stage and the remainder of the air is induced by a pressure drop in the direct stage to turn 180° and returns horizontally through wet passages in the indirect stage and out of the unit as exhaust air.
    Type: Application
    Filed: December 18, 2003
    Publication date: June 23, 2005
    Applicant: DAVIS ENERGY GROUP, INC
    Inventors: Richard Bourne, Brian Lee, Duncan Callaway
  • VERTICAL COUNTERFLOW EVAPORATIVE COOLER
    Publication number: 20050016197
    Abstract: An evaporative heat exchanger having parallel plates that define alternating dry and wet passages. A water reservoir is located below the plates and is connected to a water distribution system. Water from the water distribution system flows through the wet passages and wets the surfaces of the plates that form the wet passages. Air flows through the dry passages, mixes with air below the plates, and flows into the wet passages before exiting through the top of the wet passages.
    Type: Application
    Filed: July 23, 2003
    Publication date: January 27, 2005
    Applicant: DAVIS ENERGY GROUP, INC.
    Inventors: Richard Bourne, Brian Lee, Duncan Callaway
  • Vertical counterflow evaporative cooler
    Patent number: 6845629
    Abstract: An evaporative heat exchanger having parallel plates that define alternating dry and wet passages. A water reservoir is located below the plates and is connected to a water distribution system. Water from the water distribution system flows through the wet passages and wets the surfaces of the plates that form the wet passages. Air flows through the dry passages, mixes with air below the plates, and flows into the wet passages before exiting through the top of the wet passages.
    Type: Grant
    Filed: July 23, 2003
    Date of Patent: January 25, 2005
    Assignee: Davis Energy Group, Inc.
    Inventors: Richard C. Bourne, Brian Eric Lee, Duncan Callaway