Patents by Inventor Shaun D. Fitzgerald

Shaun D. Fitzgerald 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).

  • Passive ventilation stack
    Patent number: 8974275
    Abstract: A passive ventilation stack for a room, building or the like comprises an interior space and first and second openings providing fluid communication between the interior space and a room to be ventilated, and the outside atmosphere. A control system is provided for varying the size of the openings, so as to cause natural heat exchange between relatively cool ventilation air entering the stack from outside and relatively warm air entering the stack from a room or building to be ventilated.
    Type: Grant
    Filed: May 16, 2006
    Date of Patent: March 10, 2015
    Assignee: Cambridge Enterprise Limited
    Inventors: Andrew W. Woods, Shaun D. Fitzgerald
  • Passive Ventilation Stack
    Publication number: 20080254730
    Abstract: A passive ventilation stack for a room, building or the like comprises an interior space and first and second openings providing fluid communication between the interior space and a room to be ventilated, and the outside atmosphere. A control system is provided for varying the size of the openings, so as to cause natural heat exchange between relatively cool ventilation air entering the stack from outside and relatively warm air entering the stack from a room or building to be ventilated.
    Type: Application
    Filed: May 16, 2006
    Publication date: October 16, 2008
    Applicant: CAMBRIDGE EENTERPRISE LIMITED
    Inventors: Andrew W. Woods, Shaun D. Fitzgerald