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. 12, 2013
Filed:
Dec. 19, 2011
Rickey W. Jennings, Sparta, MO (US);
Nicholas T. Bouray, Springfield, MO (US);
Bradley F. Skidmore, Springfield, MO (US);
Rickey W. Jennings, Sparta, MO (US);
Nicholas T. Bouray, Springfield, MO (US);
Bradley F. Skidmore, Springfield, MO (US);
Loren Cook Company, Springfield, MO (US);
Abstract
An exhaust fan has an annular exhaust duct, a fan wheel, and a drive motor inside the core of the exhaust duct, and not inside the annular passage for the exhaust fluid. The exhaust duct has a tubular window frame extending between the inner and outer walls of the exhaust duct and creating service windows for a worker to reach in an de-couple the driver motor from both a bracket for its mount and also from the fan wheel. Temporary locking mechanisms actuated from reaching through the service windows removably hold the fan wheel to the exhaust duct while the drive motor is de-coupled and removed. The exhaust fan further includes self-centering mechanical connections between the drive motor and fan wheel so that the fan wheel does not have to be removed to be re-balanced.