Brakes – Vehicle – Velocipede
Reexamination Certificate
2001-01-22
2002-05-14
Butler, Douglas C. (Department: 3613)
Brakes
Vehicle
Velocipede
C188S024120, C188S026000, C188S20500R
Reexamination Certificate
active
06386328
ABSTRACT:
FIELD OF THE INVENTION
The present invention relates to a disk brake assembly which are mounted to a wheel shaft but the front fork or the chain stays so that the assembly always precisely connected with the wheel shaft.
BACKGROUND OF THE INVENTION
A conventional front wheel disk brake assembly
1
for bicycles is shown in FIG.
1
and generally includes a clamp device
11
having two connection ports
12
which are respectively connected to two lugs
14
extending from the front fork
13
. A disk
15
is mounted to the front wheel shaft
16
and the end fork
17
of the front fork
13
is engaged with the shaft
16
. The clamp device
11
of the rear wheel disk brake assembly
1
′ as shown in
FIG. 2
has the same structure to be connected to the chain stay
130
by connecting the connection ports
12
to the lugs
14
extending from the chain stays
13
. There is a hook
17
′ in the chain stay
130
to be connected with the rear wheel shaft
16
and the disk
15
is also mounted to the rear wheel shaft
16
. Because the clamp device
11
has to be connected to the lugs
14
of the front fork
13
or the chain stay
130
so that the positions of the holes for the bolts extending through the connection ports
12
and the lugs
14
have to be precise or the connection will be not stable. When adjusting the wheel shaft
16
in the end fork
17
of the front fork
13
or the hook
17
′ in the chain stay
130
, the relative positions between the clamp device
11
and the disk
15
changes which could affect the safety of operation. The front fork
13
and the chain stay
130
have to have the lugs
14
otherwise the disk brake assembly cannot be connected. For some bicycles such as BMX, the distance between the front wheel shaft and the rear wheel shaft is frequently adjusted so that until now, the BMX series do not equipped with disk brake assembly.
The present invention intends to provide a disk brake assembly which is directly connected to the wheel shaft so that the adjusting of the wheels will not affect the installation of the disk brake assembly.
SUMMARY OF THE INVENTION
In accordance with one aspect of the present invention, there is provided a disk brake assembly and includes a wheel hub with a shaft extending from two ends of the wheel hub. A brake disk is connected to the wheel hub and the shaft extends through a hole in the brake disk. A connection member has a connection hole for the shaft extending therethrough and the brake disk is located between the connection member and the wheel hub. The connection member has two connection ports and a clamp device is connected to the two connection ports. A bicycle frame has a slot in which the wheel shaft is engaged. The connection member is securely positioned between the brake disk and the bicycle frame.
The primary object of the present invention is to provide a disk brake assembly for bicycles wherein the clamp device of the brake assembly is not connected to the front fork or the chain stay so that the wheel can be adjusted relative to the front fork or the chain stay without affecting the disk brake assembly.
These and further objects, features and advantages of the present invention will become more obvious from the following description when taken in connection with the accompanying drawings which show, for purposes of illustration only, several embodiments in accordance with the present invention.
REFERENCES:
patent: 3949838 (1976-04-01), Fuhrman
patent: 3989124 (1976-11-01), Fujii
patent: 5957244 (1999-09-01), Turner
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