Supports – Suspended supports – Fittings
Reexamination Certificate
2000-06-19
2001-11-06
Ramirez, Ramon O (Department: 3632)
Supports
Suspended supports
Fittings
C248S317000, C416S005000, C416S24400R, C416S246000
Reexamination Certificate
active
06311943
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a suspension structure, and more particularly to a suspension structure for a ceiling fan.
2. Description of the Related Art
A conventional suspension structure for a ceiling fan in accordance with the prior art shown in
FIG. 1
comprises a suspension rod
11
having a lower end defining a first through hole
12
, a suspension member
10
secured on the upper end of the suspension rod
11
for securing the suspension rod
11
to the ceiling (not shown), a fitting disk
13
including a tube
14
secured to the suspension rod
11
and defining a second through hole
16
aligning with the first through hole
12
and defining three positioning holes
17
, a locking axle
15
extending through the second through hole
16
and the first through hole
12
for securing the fitting disk
13
to the suspension rod
11
, and three screws
18
each extending through a respective positioning hole
17
to press the outer wall of the suspension rod
11
.
However, a clearance is formed between the suspension rod
11
and the tube
14
so that when the three screws
18
extend through the positioning holes
17
of the tube
14
to press the outer wall of the suspension rod
11
, the suspension rod
11
is not easily located at the center of the three screws
18
so that the suspension rod
11
and the tube
14
are not concentrically arranged. Therefore, it is time consuming to calibrate the three screws
18
for centering the suspension rod
11
in the tube
14
.
In addition, the three screws
18
are easily loosened during long term rotation of the ceiling fan so that the suspension rod
11
and the tube
14
easily vibrate or sway, thereby greatly effecting the operation of the ceiling fan.
SUMMARY OF THE INVENTION
The present invention has arisen to mitigate and/or obviate the disadvantage of the conventional suspension structure for a ceiling fan.
In accordance with one aspect of the present invention, there is provided a suspension structure for a ceiling fan comprising: a suspension rod; a support disk secured to the suspension rod and provided with a tubular base secured on a lower end of the suspension rod, an outer thread formed on a lower end of the tubular base, a plurality of locking openings laterally defined in the tubular base; a locking block slidably mounted on the suspension rod and provided with a plurality of locking inserts each detachably secured in a respective one of the locking openings of the tubular base of the support disk; and a slide cover rotatably mounted on the suspension rod and defining a receiving chamber for receiving the locking block and the tubular base therein, an inner thread formed on a lower end of the receiving chamber of the slide cover and detachably engaged with the outer thread of the tubular base of the support disk.
By such an arrangement, the slide cover is gradually moved to lock the tubular base of the support disk so that the locking inserts of the locking block are fitted into the locking openings of the tubular base of the support disk in a concentrically forced fit manner, thereby producing an automatic calibration effect for automatically registering the center of the locking inserts of the locking block and the locking openings of the tubular base of the support disk.
In addition, the slide cover can be easily and rapidly secured on the tubular base of the support disk without having to use additional tools, thereby facilitating the user assembling and dismantling the suspension structure of the present invention.
In accordance with an embodiment of the present invention, each of the locking inserts of the locking block and each of the respective locking openings of the tubular base of the support disk include an inclined contact surface for enhancing the tightness of engagement between the locking insert and the locking opening.
Further benefits and advantages of the present invention will become apparent after a careful reading of the detailed description with appropriate reference to the accompanying drawings.
REFERENCES:
patent: 4634345 (1987-01-01), Stanek et al.
patent: 4691889 (1987-09-01), Richards
patent: 4714230 (1987-12-01), Huang
patent: 5613832 (1997-03-01), Su
patent: 5984640 (1999-11-01), Wang
patent: 6042072 (2000-03-01), Chi-Nan
patent: 6116559 (2000-09-01), Lackey
patent: 6139279 (2000-10-01), Pearce et al.
patent: 6183204 (2001-02-01), Chang
patent: 6200095 (2001-03-01), Bucher et al.
patent: 6203279 (2001-03-01), Moody et al.
Baxley Charles E.
Le Tan
Ramirez Ramon O
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