Brakes – Internal-resistance motion retarder – Including means connecting thrust member to load
Reexamination Certificate
2003-07-18
2004-12-07
Siconolfi, Robert A. (Department: 3683)
Brakes
Internal-resistance motion retarder
Including means connecting thrust member to load
C267S287000, C267S221000
Reexamination Certificate
active
06827184
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a shock-absorbing device, and more particularly to a shock-absorbing device of an automobile.
2. Description of the Related Art
A conventional shock-absorbing device of an automobile in accordance with the prior art shown in
FIGS. 1 and 2
comprises a cantilever
13
connected to the tire (not shown) of the automobile, a retractable rod
10
having a lower end mounted on the cantilever
13
, a snap ring
11
secured on the retractable rod
10
, a jacket
15
mounted on an upper end of the retractable rod
10
, a support sleeve
16
mounted on the top end of the jacket
15
and secured to the chassis (not shown) of the automobile, and a compression spring
20
mounted on the retractable rod
10
and urged between the snap ring
11
and the support sleeve
16
. Thus, the retractable rod
10
can be retracted into the jacket
15
to compress the compression spring
20
, so that the shock-absorbing device can provide a shock-absorbing function to the automobile.
In adjustment of the height of the automobile, the retractable rod
10
is machined and formed with an annular groove
12
for securing a new snap ring
11
A. Then, the original snap ring
11
is removed from the retractable rod
10
, so that the bottom of the compression spring
20
is rested on the new snap ring
11
A. Thus, the chassis of the automobile is lowered by the pulling action of the compression spring
20
to adjust the height of the automobile.
However, the user has to machine the retractable rod
10
to form the annular groove
12
in the retractable rod
10
for securing the new snap ring
11
A, thereby causing inconvenience to the user when adjusting the height of the automobile. In addition, the position of the annular groove
12
in the retractable rod
10
cannot be located exactly, so that the height of the automobile cannot be adjusted precisely.
SUMMARY OF THE INVENTION
The present invention is to mitigate and/or obviate the disadvantage of the conventional shock-absorbing device of an automobile.
The primary objective of the present invention is to provide a shock-absorbing device, wherein when the urging nut on the outer threaded tube is unscrewed, the threaded rod can be rotated relative to the outer threaded tube, thereby adjusting the relative distance between the threaded rod and the outer threaded tube, such that the height of the automobile can be largely adjusted easily and conveniently.
Another objective of the present invention is to provide a shock-absorbing device, wherein when the urging nut on the adjusting nut is unscrewed, the adjusting nut can be rotated relative to the threaded rod to change the height of the adjusting nut, thereby adjusting the tension of the compression spring, and thereby micro-adjusting the height of the automobile easily and conveniently.
A further objective of the present invention is to provide a shock-absorbing device, wherein the scales of the flat surface can be used to indicate the length of the shock-absorbing device, so that the height of the automobile can be adjusted rapidly and exactly.
A further objective of the present invention is to provide a shock-absorbing device, wherein the scraper of the flat surface of the threaded rod can be used to scrape the greasy dirt contained in the inner wall of the outer threaded tube during rotation of the threaded rod, so as to clear the inner wall of the outer threaded tube.
In accordance with the present invention, there is provided a shock-absorbing device, comprising:
an outer threaded tube;
a threaded rod rotatably mounted in the outer threaded tube and having an outer wall formed with flat surface, the threaded rod being provided with a retractable rod which is slidable in the threaded rod;
a compression spring mounted between the retractable rod and the threaded rod;
an adjusting nut mounted on the threaded rod and rested on a lower end of the compression spring; and
an urging nut mounted on the threaded rod and rested on a top end of the outer threaded tube, so that the threaded rod is locked on the outer threaded tube.
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: 4453638 (1984-06-01), Wallace
patent: 4744444 (1988-05-01), Gillingham
patent: 4771996 (1988-09-01), Martinez et al.
patent: 5988332 (1999-11-01), Marzocchi et al.
patent: 6142268 (2000-11-01), Kuo-An
patent: 6698559 (2004-03-01), Liou et al.
Baxley Charles E.
Siconolfi Robert A.
Torres Melanie
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