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:
Aug. 25, 2009
Filed:
Jun. 19, 2006
Syed S. Ahmed, Waco, TX (US);
Kevin W. Sawyer, Hewitt, TX (US);
Bryan M. Herzog, Waco, TX (US);
Kim L. Hall, Waco, TX (US);
Kirk W. Beason, Tyler, TX (US);
Syed S. Ahmed, Waco, TX (US);
Kevin W. Sawyer, Hewitt, TX (US);
Bryan M. Herzog, Waco, TX (US);
Kim L. Hall, Waco, TX (US);
Kirk W. Beason, Tyler, TX (US);
Trane International Inc., Piscataway, NJ (US);
Abstract
An HVAC unit ventilator, particularly suited for schools and hotels, includes a single damper blade driven directly by a motor to control a supply air's mixture of return air and outside air. The damper blade is selectively pivotal to a full outside air position, a full return air position, and various intermediate mixed-air positions. The damper blade has flexible edge and end seals that create little if any frictional drag as the damper blade pivots to the intermediate positions, yet the seals provide a positive, tight seal when the damper stops at either the full outside air position or the full return air position. The unit ventilator includes a filter frame that not only supports an air filter but also provides the damper blade with sealing surfaces and structural support. For rigidity, the damper blade has somewhat of a box-like structure that is bi-directionally reinforced by ribs and triangular gussets.