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:
Jun. 01, 2010
Filed:
Feb. 08, 2007
Donald P. Grant, Dubuque, IA (US);
Paul Maly, Mequon, WI (US);
John Moore, Marceline, MO (US);
Ronald P. Snyder, Dubuque, IA (US);
Aaron J. Wiegel, Benton, IA (US);
Donald P. Grant, Dubuque, IA (US);
Paul Maly, Mequon, WI (US);
John Moore, Marceline, MO (US);
Ronald P. Snyder, Dubuque, IA (US);
Aaron J. Wiegel, Benton, IA (US);
Rite-Hite Holding Corporation, Milwaukee, WI (US);
Abstract
A large industrial ceiling fan includes exceptionally long fan blades with blade tips that can be tilted upward to more broadly distribute the air. Such broad distribution might be particularly beneficial in cases where the fan is installed relatively low to avoid obstacles such as hanging lights, sprinkler heads and rafters. A low mounting position is possible, because the fan is suspended from a hanger of adjustable length. The fan includes several joints that are redundantly bolted and welded for safety. A continuous retaining ring provides additional safety. A resilient bushing enhances the flexibility of the fan blades and reduces strain where the fan blades connect to a central mounting hub. To more broadly distribute the airflow underneath the fan, each fan blade has a twisted geometry to provide an angle of attack that decreases from the root to the tip of the blade.