Fluid reaction surfaces (i.e. – impellers) – Combined or convertible – Hub lubrication or seal
Reexamination Certificate
1999-04-09
2001-02-06
Look, Edward K. (Department: 3745)
Fluid reaction surfaces (i.e., impellers)
Combined or convertible
Hub lubrication or seal
C416S1700HM, C416S24700A, C416S246000, C415S121200, C096S063000, C096S097000
Reexamination Certificate
active
06183200
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a fan device designed with double front nets, wherein the output wind an be diffuse uniformly and smoothly, further a fragrant piece groove and a mosquito-repellent incense piece groove are installed, thus the people will feel comfortable.
2. Description of the Prior Art
As shown in
FIG. 1
, the prior art fan is a case fan, a blade device driven to rotated by a motor is installed therewithin. Another front fan cover
11
a
can be driven to rotate by another motor is installed in front of the blade
10
a.
The front fan cover
11
a
is formed as grids. In using the fan device, the wind will flow forward by the rotating blades
10
a
through the front fan cover
11
a.
Such kind of device may refer to Taiwan Patent No. 146452, etc.
However, in the aforesaid prior art fan structure, since it only designed with unique front fan cover
11
a,
the wind does not flow smoothly, thus people will feel uneasy. Moreover, in the prior art, the blades
10
a
and the front fan cover
11
a
are pivotally installed within an outer frame
12
a
so as to adjust the blades
10
a
to a different elevation angle. When the blades
10
a
and the front fan cover
11
a
are adjusted to an angle to output wind upwards, the wind will be hindered by the upper portion
13
a
of the outer frame
12
a.
Thus, the wind can not flow successfully. Moreover, the prior art fan device only has the function of outputting wind but has not contain the functions of fragrant device and the mosquito-repellent incense device.
SUMMARY OF THE INVENTION
Accordingly, the object of the present invention is to provide a fan device which has a special designed rotary front net with many lattices. By this net design, the output wind can be diffuse uniformly and smoothly.
Another object of the present invention is to provide a fan device installed with a negative ion generator for adhering with dust so as to clean air.
Another object of the present invention is to provide a fan device installed with a fragrant piece groove and a mosquito-repellent incense piece groove for being inserted by fragrant pieces and mosquito-repellent incense pieces, and an electric heating piece is adjacent to the grooves. The fragrant pieces or mosquito-repellent incense pieces will emit fragrant odor to flow outwards with the wind, so that the fan has the functions of a fragrant device and a mosquito-repellent incense device.
A further object of the present invention is to provide a fan device design with an adjustable fan leg frame for adjusting the fan device to different elevation angle. However, the fan does not designed with an outer frame, therefore, irrespective of the fan device being adjusted to any orientation, it will not be hindered by the outer frame. As a result, the wind can be outputted successfully.
The present invention will be better understood and its numerous objects and advantages will become apparent to those skilled in the art by referencing to the following drawings in which:
REFERENCES:
patent: 2720013 (1955-10-01), Clarke
patent: 3422263 (1969-01-01), Asahina
patent: 4515538 (1985-05-01), Shih
patent: 4597781 (1986-07-01), Spector
patent: 5259726 (1993-11-01), Bacria
patent: 5820660 (1998-10-01), Ko
Look Edward K.
Nguyen Ninh
Rosenberg , Klein & Lee
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