The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 11, 2006
Filed:
Nov. 20, 2001
Frederic Lagace, Drummondville, CA;
Jean-francois Grondin, Drummondville, CA;
Pierre Cusson, St-Germain de Grantham, CA;
Michel Julien, St-Nicéphore, CA;
Daniel Marcoux, Drummondville, CA;
Frederic Lagace, Drummondville, CA;
Jean-Francois Grondin, Drummondville, CA;
Pierre Cusson, St-Germain de Grantham, CA;
Michel Julien, St-Nicéphore, CA;
Daniel Marcoux, Drummondville, CA;
Venmar Ventilation Inc., Drummondville, CA;
Abstract
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.