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:
Jan. 05, 1999
Filed:
Apr. 17, 1997
Peter Karl Grinbergs, Dorchester, CA;
Nutech Energy Systems Inc., London, CA;
Abstract
The present invention relates to a combined furnace and air recovery system. The system is comprised of a furnace housing having an inlet opening for connection to a cold air return duct and an outlet opening connected to a heating duct. A negative pressure compartment is located within the housing and is in communication with the inlet opening. A positive pressure compartment is also located within the housing and is in communication with the outlet opening. A fan is provided, communicating between the negative pressure compartment and the positive pressure compartment. a heating unit is located within the positive pressure compartment. An air-to-air heat exchange unit is provided having first and second air flow paths, wherein the first air flow path connects an exterior inlet duct to the negative pressure chamber to provide a supply of fresh air to the negative pressure chamber and the second air flow path connects the positive pressure chamber to an exterior outlet duct to provide for exhausting stale air from said positive pressure chamber.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile