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:
Sep. 12, 2006
Filed:
Jul. 30, 2004
Mark Geoffrey Masen, Royal Oak, MI (US);
David Ray Sundberg, Grapevine, TX (US);
John James Schlachter, Waterford, MI (US);
Frank Phillip Mimick, Watauga, TX (US);
Mark Geoffrey Masen, Royal Oak, MI (US);
David Ray Sundberg, Grapevine, TX (US);
John James Schlachter, Waterford, MI (US);
Frank Phillip Mimick, Watauga, TX (US);
Maxitrol Company, Southfield, MI (US);
Abstract
A method of determining the amount of air flowing through an outside air damper of a recirculating air heater includes the steps of sensing an amount of airflow flowing through the damper, recording the amount of airflow and a damper position value at a plurality of damper positions, and interpolating a curve relating the amount of airflow to the damper position for all damper positions between a minimum damper position and a maximum damper position. Once the amount of air flowing through the outside air damper is determined from a position on the curve, the concentration of carbon dioxide (CO) within a building space can be calculated and/or determined to be within acceptable limits.