Machine element or mechanism – Control lever and linkage systems – Elements
Reexamination Certificate
2002-03-18
2004-02-03
Luong, Vinh T. (Department: 3682)
Machine element or mechanism
Control lever and linkage systems
Elements
C280S279000, C384S513000
Reexamination Certificate
active
06684732
ABSTRACT:
FIELD OF THE INVENTION
The present invention relates to a pressing member connected to a lower end of a handlebar stem which exerts a downward force to the pressing member which secures the head set on the head tube of a bicycle.
BACKGROUND OF THE INVENTION
A conventional connection between a handlebar
10
, a head tube
16
and a head set
15
mounted on a top end of the head tube
16
is shown in FIG.
1
and the handlebar stem includes a ring portion
100
which is mounted to a steerer tube
17
extending through the head tube
16
. The head set
15
is connected between the ring portion
100
and the head tube
16
so as to allow the handlebar
10
to control the turning of the steerer tube
17
. A fastening set including two disks each have fastening wings
11
extending radially outward therefrom and the wings
11
contact the inside of the steerer tube
17
. A bolt
13
threadedly extends in the central threaded passage
14
in the disks and expand the wings
11
. A top cap
12
is connected to the bolt
13
and mounted on the top of the ring portion
100
so that the ring portion
100
and the steerer tube
17
are connected together. However, it requires a special tool to force the disks and the wings
11
in the steerer tube
17
and it is inconvenient to remove the disks and the wings
11
out from the seeter tube
17
when maintenance is needed.
SUMMARY OF THE INVENTION
In accordance with one aspect of the present invention, there is provided a top head set securing device and the device comprises a handlebar stem having a ring portion clamped onto a steerer tube and a C-shaped pressing member is connected to a lower end of the ring portion. Two lugs extend from two ends of the C-shaped pressing member and a bolt extends through the two lugs to pull the two lugs together. The pressing member has a tapered inner periphery and a pressing ring is mounted to the steerer tube and has a tapered outer periphery which is matched with the tapered inner periphery of the pressing member. The pressing ring presses onto the top head set on a head tube.
The primary object of the present invention is to provide a top head set securing device which is operated simply by screwing a bolt through a pressing member at the lower end of the ring portion of the handlebar stem.
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, a preferred embodiment in accordance with the present invention.
REFERENCES:
patent: 5201242 (1993-04-01), Chi
patent: 5291797 (1994-03-01), Chi
patent: 5445047 (1995-08-01), Chi
patent: 5540457 (1996-07-01), Johnson
patent: 5573262 (1996-11-01), Chi
patent: 5775709 (1998-07-01), Chen
patent: 5813769 (1998-09-01), Chueh
patent: 6039499 (2000-03-01), Chiang
patent: 6126323 (2000-10-01), Tange
patent: 6231063 (2001-05-01), Chi
patent: 6234506 (2001-05-01), Li
patent: 6422353 (2002-07-01), Lin
patent: 1059226 (2000-12-01), None
Luong Vinh T.
Rosenberg , Klein & Lee
LandOfFree
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