Gas separation – Combined or convertible
Reexamination Certificate
1999-11-10
2001-06-19
Simmons, David A. (Department: 1724)
Gas separation
Combined or convertible
C055S471000, C055S503000, C096S417000, C416S14600A
Reexamination Certificate
active
06248147
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to an air filter for a ceiling fan, especially to an air filter centrally suspended from a ceiling fan to filter the air and reinforce the circulation of clean air indoors.
2. Description of Related Art
A conventional air filter is usually placed on the floor in a comer indoors. Since the comer is a place where air does not circulate well, the filtering effect provided by the conventional air filter is not as good as desired. In the case of a narrow room such as a metropolitan apartment, the conventional air filter also has a problem of occupying a great deal of floor space.
Therefore, there is a need for an air filter capable of providing an improved filtering effect, reinforcing the circulation of clean air and saving floor space.
SUMMARY OF THE INVENTION
The objective of the present invention is to provide an air filter for a ceiling fan capable of reinforcing the circulation of clean air.
To achieve the objective, the air filter for a ceiling fan in accordance with the present invention is suspended from the switch box of a ceiling fan, and comprises a housing in which a rotating blade and a filtering means are received. With the air filter for a ceiling fan in accordance with the present invention, the air is drawn through the filtering means by the suction force from the blade and then flows out the housing. Since the housing is positioned just under the ceiling fan, the filtered air is then spread to the whole room by the ceiling fan.
Other objectives, advantages and novel features of the invention will become more apparent from the following detailed description when taken in conjunction with the accompanying drawings.
REFERENCES:
patent: 5668920 (1997-09-01), Pelonis
patent: 5887785 (1999-03-01), Yilmaz
patent: 32 45 769 (1983-08-01), None
patent: 1-266824 (1989-10-01), None
Dorsey & Whitney LLP
Hopkins Robert A.
Simmons David A.
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