Patents by Inventor Frederic Lagace
Frederic Lagace 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).
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Patent number: 7458228Abstract: The present invention relates to an apparatus for ventilation systems which include an element for the transfer of heat from warm exhaust air (taken from inside a building) to cooler exterior fresh air which is drawn into the building. The present invention in particular provides an apparatus whereby, during a defrost cycle, interior air may circulate through both of the fresh air and exhaust air paths for delivery back into the building, i.e. the warm interior air, used as defrost air, may be able to circulate from the interior of the building into the ventilation apparatus and back to the interior of the building. The apparatus can thus use interior air as defrost air while diminishing or avoiding the creation of a negative air pressure in the building.Type: GrantFiled: May 23, 2006Date of Patent: December 2, 2008Assignee: Venmar Ventilation Inc.Inventors: Frederic Lagace, Jean-Francois Grondin, Pierre Cusson, Michel Julien, Daniel Marcoux
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Publication number: 20060219381Abstract: The present invention relates to an apparatus for ventilation systems which include an element for the transfer of heat from warm exhaust air (taken from inside a building) to cooler exterior fresh air which is drawn into the building. The present invention in particular provides an apparatus whereby, during a defrost cycle, interior air may circulate through both of the fresh air and exhaust air paths for delivery back into the building, i.e. the warm interior air, used as defrost air, may be able to circulate from the interior of the building into the ventilation apparatus and back to the interior of the building. The apparatus can thus use interior air as defrost air while diminishing or avoiding the creation of a negative air pressure in the building.Type: ApplicationFiled: May 23, 2006Publication date: October 5, 2006Inventors: Frederic Lagace, Jean-Francois Grondin, Pierre Cusson, Michel Julien, Daniel Marcoux
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Patent number: 7073566Abstract: An apparatus for ventilation systems includes an element for the transfer of heat from warm exhaust air (taken from inside a building) to cooler exterior fresh air which is drawn into the building. The present invention in particular provides an apparatus whereby, during a defrost cycle, interior air may circulate through both of the fresh air and exhaust air paths for delivery back into the building, i.e. the warm interior air, used as defrost air, may be able to circulate from the interior of the building into the ventilation apparatus and back to the interior of the building. The apparatus can thus use interior air as defrost air while diminishing or avoiding the creation of a negative air pressure in the building.Type: GrantFiled: November 20, 2001Date of Patent: July 11, 2006Assignee: Venmar Ventilation Inc.Inventors: Frederic Lagace, Jean-Francois Grondin, Pierre Cusson, Michel Julien, Daniel Marcoux
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Patent number: 6889750Abstract: An apparatus for ventilation systems which include an element for the transfer of heat from warm exhaust air (taken from inside a building) to cooler exterior fresh air which is drawn into the building. During a defrost cycle, interior air may circulate through both of the fresh air and exhaust air paths for delivery back into the building, i.e. the warm interior air, used as defrost air, may be able to circulate from the interior of the building into the ventilation apparatus and back to the interior of the building. The apparatus can thus use interior air as defrost air while diminishing or avoiding the creation of a negative air pressure in the building.Type: GrantFiled: January 8, 2002Date of Patent: May 10, 2005Assignee: Venmar Ventilation Inc.Inventors: Frederic Lagace, Jean-Francois Grondin, Pierre Cusson, Michel Julien, Daniel Marcoux
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Publication number: 20020139514Abstract: The present invention relates to an apparatus for ventilation systems which include an element for the transfer of heat from warm exhaust air (taken from inside a building) to cooler exterior fresh air which is drawn into the building. The present invention in particular provides an apparatus whereby, during a defrost cycle, interior air may circulate through both of the fresh air and exhaust air paths for delivery back into the building, i.e. the warm interior air, used as defrost air, may be able to circulate from the interior of the building into the ventilation apparatus and back to the interior of the building. The apparatus can thus use interior air as defrost air while diminishing or avoiding the creation of a negative air pressure in the building.Type: ApplicationFiled: January 8, 2002Publication date: October 3, 2002Inventors: Frederic Lagace, Jean-Francois Grondin, Pierre Cusson, Michel Julien, Daniel Marcoux
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Publication number: 20020050338Abstract: The present invention relates to an apparatus for ventilation systems which include an element for the transfer of heat from warm exhaust air (taken from inside a building) to cooler exterior fresh air which is drawn into the building. The present invention in particular provides an apparatus whereby, during a defrost cycle, interior air may circulate through both of the fresh air and exhaust air paths for delivery back into the building, i.e. the warm interior air, used as defrost air, may be able to circulate from the interior of the building into the ventilation apparatus and back to the interior of the building. The apparatus can thus use interior air as defrost air while diminishing or avoiding the creation of a negative air pressure in the building.Type: ApplicationFiled: November 20, 2001Publication date: May 2, 2002Inventors: Frederic Lagace, Jean-Francois Grondin, Pierre Cusson, Michel Julien, Daniel Marcoux
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Publication number: 20010013404Abstract: The present invention relates to an apparatus for ventilation systems which include an element for the transfer of heat from warm exhaust air (taken from inside a building) to cooler exterior fresh air which is drawn into the building. The present invention in particular provides an apparatus whereby, during a defrost cycle, interior air may circulate through both of the fresh air and exhaust air paths for delivery back into the building, i.e. the warm interior air, used as defrost air, may be able to circulate from the interior of the building into the ventilation apparatus and back to the interior of the building. The apparatus can thus use interior air as defrost air while diminishing or avoiding the creation of a negative air pressure in the building.Type: ApplicationFiled: January 25, 2001Publication date: August 16, 2001Inventors: Frederic Lagace, Jean-Francois Grondin, Pierre Cusson, Michel Julien, Daniel Marcoux
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Patent number: 6209622Abstract: The present invention relates to an apparatus for ventilation systems which include an element for the transfer of heat from warm exhaust air (taken from inside a building) to cooler exterior fresh air which is drawn into the building. The present invention in particular provides an apparatus whereby, during a defrost cycle, interior air may circulate through both of the fresh air and exhaust air paths for delivery back into the building i.e. the warm interior air, used as defrost air, may be able to circulate from the interior of the building into the ventilation apparatus and back to the interior of the building. The apparatus can thus use interior air as defrost air while diminishing or avoiding the creation of a negative air pressure in the building.Type: GrantFiled: October 25, 1994Date of Patent: April 3, 2001Assignee: Venmar Ventilation Inc.Inventors: Frederic Lagace, Jean-Francois Grondin, Pierre Cusson, Michel Julien, Daniel Marcoux
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Patent number: 5771707Abstract: A unitary heat exchanger device, for the transfer of total heat, comprising air-to-air heat transfer means and configured such that air may pass there through. The heat transfer means comprisesan air-to-air water vapor transfer element andan air-to-air sensible heat transfer element,the exchanger elements being in air communication with each other. The device may be used in ventilation systems which replace air exhausted from the interior of a building with fresh outside air; the use of the device under cold weather conditions may avoid or attenuate the need for using a defrost mechanism to defrost the device.Type: GrantFiled: January 17, 1997Date of Patent: June 30, 1998Assignee: Venmar Ventilation Inc.Inventors: Frederic Lagace, Daniel Forest
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Patent number: D366522Type: GrantFiled: January 13, 1995Date of Patent: January 23, 1996Assignee: Venmar Ventilation Inc.Inventors: Frederic Lagace, Jean-Francois Grondin, Pierre Cusson, Michel Julien, Daniel Marcoux