Fluid reaction surfaces (i.e. – impellers) – Articulated – resiliently mounted or self-shifting impeller... – Nonmetallic resilient mounting
Reexamination Certificate
2007-02-08
2010-06-01
Look, Edward (Department: 3745)
Fluid reaction surfaces (i.e., impellers)
Articulated, resiliently mounted or self-shifting impeller...
Nonmetallic resilient mounting
C416S21000A, C416S24400R, C416S246000
Reexamination Certificate
active
07726945
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.
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Grant Donald P.
Maly Paul
Moore John
Snyder Ronald P.
Wiegel Aaron J.
Hanley Flight & Zimmerman LLC
Look Edward
Prager Jesse
Rite-Hite Holding Corporation
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