Music – Instruments – Drum and cymbal beaters
Reexamination Certificate
2003-02-24
2004-05-25
Lockett, Kimberly (Department: 2837)
Music
Instruments
Drum and cymbal beaters
C084S422100, C084S422200
Reexamination Certificate
active
06740799
ABSTRACT:
FIELD OF THE INVENTION
The present invention relates to a central bar structure for hi-hat cymbals and particularly a structure that has a toggle linkage unit bridging the lower end of a central bar and a foot pedal to smooth the descending movement of the central bar to enable the upper cymbal to strike the lower cymbal to generate sound.
BACKGROUND OF THE INVENTION
A conventional hi-hat cymbal stand such as the one shown in
FIGS. 1 and 2
mainly includes a tripod stand
1
with an upright tube
2
in the center. There is a central bar
3
running through the interior of the upright tube
2
. The central bar
3
has a top end fastening to an upper cymbal
4
and a bottom end connecting to a foot pedal
5
. There is a lower cymbal
6
fastening to the top end of the upright tube
2
. When the foot pedal
5
is depressed, the upper cymbal
4
is moved downwards to strike the lower cymbal
6
to generate sound. As the foot pedal
5
is mounted in a biased manner and forms an angle with the upright tube
2
, when the foot pedal
5
is depressed, the central bar
3
is pulled downwards to generate a reaction force and leans towards the foot pedal
5
. Since the upright tube
2
is fixed and stationary, the central bar
3
slides inside the upright tube
2
and a resistant force occurs due to the interference taking place between the central bar
3
and the inner wall of the upright tube
2
. To remedy this problem, conventional techniques mostly have a chain
7
pivotally connecting to the foot pedal
5
. The chain
7
has flexibility to eliminate the interference and resistance occurred to the central bar
3
.
As the chain
7
usually consists of a plurality of connecting segments, it does not have desired precision and sensitivity to transmit forces. But the hi-hat cymbal has to match performer's desire to produce fast and precise beats to generate the optimal audio effect. The chain
7
cannot fully meet such a requirement. There is still room for improvement.
SUMMARY OF THE INVENTION
Therefore the primary object of the invention is to provide a central bar structure for hi-hat cymbals that has a toggle linkage unit bridging the lower end of the central bar and the foot pedal. The toggle linkage unit is flexible. Thus when the foot pedal is depressed, the angle between the central bar and the foot pedal may be narrowed and closed without resistance. The toggle linkage unit further has a bearing located on the bottom to couple with an axle rod of the foot pedal for the foot pedal to operate smoothly.
The foregoing, as well as additional objects, features and advantages of the invention will be more readily apparent from the following detailed description, which proceeds with reference to the accompanying drawings.
REFERENCES:
patent: 4381690 (1983-05-01), Kimble
patent: 4510838 (1985-04-01), Alexis, Jr.
patent: 5052262 (1991-10-01), Havens
patent: 6075192 (2000-06-01), Hoshino
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