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:
Nov. 09, 1999
Filed:
Sep. 25, 1997
H Alfred Eberhardt, Marco Island, FL (US);
Other;
Abstract
Air control apparatus for a fireplace prevents or inhibits the buildup of soot and dirt on the inside surface of the glass doors of the fireplace. A combustion control system for a fireplace for controlling the volume and direction of air circulating through the combustion chamber of a fireplace includes an air control apparatus constructed for insertion underneath a log grate; ducts for conveying an external source of combustion air to an ash pit; an air flow valve in the conveying ducts for controlling the flow of air through the conveying ducts; a filter in the conveying ducts for preventing contaminants from entering the conveying ducts; a thermostat connected to an air flow valve which controls operation of the air flow valve; a forced air heat exchanger functionally connected to the thermostat; a temperature sensing cutoff switch near the heat exchanger; a natural gas log apparatus having a gas flow valve, a burner and ignitor, the gas flow valve and ignitor being functionally connected to said thermostat; and, a booster fan in the conveying means which is functionally connected to the thermostat.