Fluid reaction surfaces (i.e. – impellers) – Specific blade structure – Concave surface
Reexamination Certificate
2007-05-01
2007-05-01
Nguyen, Ninh H. (Department: 3745)
Fluid reaction surfaces (i.e., impellers)
Specific blade structure
Concave surface
C416S22300B
Reexamination Certificate
active
11027242
ABSTRACT:
Twisted ceiling fan blades for low, medium and high speed operation of less than approximately 250 rpm. The novel blades twisted blades can be configured for 60″ and 64″ diameter fans, and have less blades (3 for example) than conventional flat type bladed fans having 4, 5 blades and have greater air flow and less power draw results than the conventional flat 54 inch fans. Any of the novel twisted blades of 54″, 60″ and 64″ can be run at reduced speeds, drawing less Watts than conventional fans and still perform better with more air flow and less problems than conventional flat type conventional blades.
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Hibbs Bart D.
Parker Danny S.
Su Guan Hua
Law Offices of Brian S. Steinberger , P.A.
Nguyen Ninh H.
Research Foundation of the University of Central Florida, Inc.
Steinberger Brian S.
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