Fluid reaction surfaces (i.e. – impellers) – Support mounting – carrier or fairing structure
Reexamination Certificate
2000-01-17
2001-03-06
Look, Edward K. (Department: 3745)
Fluid reaction surfaces (i.e., impellers)
Support mounting, carrier or fairing structure
C416S005000, C416S246000, C417S423150
Reexamination Certificate
active
06196804
ABSTRACT:
BACKGROUND OF THE INVENTION
The invention relates generally to an apparatus for attaching a ceiling fan to a ceiling, and more particularly to a standardized downrod for attaching a ceiling fan motor housing to a ceiling bracket while providing a plurality of connecting mechanisms for attaching electrical ground wiring to the downrod.
Prior art devices exist concerning ceiling fan down rods. In Scofield, et al., U.S. Pat. No. 5,462,412, a ceiling fan is disclosed which includes a down rod secured between an upper stator and a lower motor portion, the down rod assisting with suspension of the motor from the ceiling. In Ridings, et al., U.S. Pat. No. 5,090,654, a ceiling fan adapter is disclosed that includes a down rod that interconnects with a ball-joint and a ceiling fan, allowing a ceiling hanger, the ceiling fan, the ball-joint, and the down rod to be mounted at an angle to a steep pitched ceiling. In Markwardt, U.S. Pat. No. 4,878,806, a dual mounting ceiling fan is disclosed that includes an adjustable down rod that allows for positioning of ceiling fan blades at variable distances from the ceiling. In Markwardt, U.S. Pat. No. 4,729,725, a ceiling fan mounting system is disclosed that includes a down rod that is adjustable and swivels, and fits into a canopy to which the motor housing fits of the ceiling fan.
Thus these and other downrods for mounting ceiling fans have shortcomings based on the lack of adjustability and the lack of a standardized design of the down rod devices for connection to ceiling fan mounting assemblies. There exists room for improvement within the art.
SUMMARY OF THE INVENTION
It is an object of this invention to provide an apparatus that suspends a ceiling fan from a ceiling mounting assembly.
It is a further object of this invention to provide an apparatus that allows for detachable connection to any combination of a mounting assembly and a motor housing of a ceiling fan.
It is an additional object of this invention to provide an apparatus that allows detachable connection of a plurality of electrical wires from a mounting assembly and a motor housing of a ceiling fan.
It is a further and more particular object of this inventions to provide an apparatus that is rigid and light in weight.
It is yet a further and more particular object of this invention to provide an apparatus that is inexpensive and attractive for use with a multitude of ceiling fan assemblies.
These and other objects of the invention are accomplished by a ceiling fan downrod apparatus which is attachable between a ceiling mounting assembly and a ceiling fan motor housing. The apparatus includes an elongated tube with a plurality of holes in the walls of the tube, the tube having an interior void, and an exterior surface having threading on each of a first open end and a second open end of the tube. Thus, the objects of the invention are accomplished by the ceiling fan downrod apparatus providing for physical and electrical connections of a ceiling mounting assembly with a ceiling fan motor housing as described herein.
REFERENCES:
patent: 4714230 (1987-12-01), Huang
patent: 4729725 (1988-03-01), Markwardt
patent: 4878806 (1989-11-01), Markwardt
patent: 5090654 (1992-02-01), Ridings et al.
patent: 5462412 (1995-10-01), Scofield et al.
patent: 5851107 (1998-12-01), Wang
patent: 5984640 (1999-11-01), Wang
Hardaway/Mann IP Group
Look Edward K.
McDowell Liam
Nexsen Pruet Jacobs & Pollard LLC
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