Motor vehicles – Ski- or skate-type vehicle for imparting movement to a... – With power means or a portion thereof affixed to or built...
Reexamination Certificate
2000-09-13
2001-08-14
Dickson, Paul N. (Department: 3618)
Motor vehicles
Ski- or skate-type vehicle for imparting movement to a...
With power means or a portion thereof affixed to or built...
C180S228000, C180S298000, C180S221000
Reexamination Certificate
active
06273205
ABSTRACT:
FIELD OF THE INVENTION
The present invention relates generally to a scooter, and more particularly to a power clutch of the scooter.
BACKGROUND OF THE INVENTION
As shown in
FIG. 1
, a scooter power clutch of the prior art comprises a motor
1
which is pivoted to the rear fork
2
of the scooter such that the motor
1
is connected with the rear fork
2
by a spring
3
. The motor
1
is further connected with a lever
8
by a steel cable
6
. The lever
8
is pivoted to a handlebar
7
. The output shaft
4
of the motor
1
is caused by the spring force of the spring
3
to make contact with a rear wheel
5
of the scooter, so as to move the scooter forward. As the lever
8
is actuated, the steel cable
6
overcomes the compression force of the spring
3
so as to enable the motor
1
to turn counterclockwise a predetermined angle, thereby causing the output shaft
4
of the motor
1
to move away from the rear wheel
5
. The power of the motor is thus switched by the power clutch in accordance with the need of the rider of the scooter.
When the rider wants to ride the scooter manually, the rider must hold constantly the lever
8
so as to prevent the lever
8
from being actuated. It is tiresome to hold the lever
8
while riding the scooter manually.
SUMMARY OF THE INVENTION
The primary objective of the present invention is to provide a scooter with a power clutch which is free of the deficiencies of the prior art power clutch described above.
The power clutch is mounted on a scooter comprising a bottom board, a handlebar, a front wheel, at least one rear fork, and a rear wheel. The power clutch is formed of a power unit, an elastic member, a connection rod set, and an urging member. The power unit comprises a suspension seat mounted pivotally on the bottom board, a motor mounted on the suspension seat, and a drive wheel mounted on the output shaft of the motor such that the drive wheel is in contact with the rear wheel. The connection rod set is formed of a first rod member and a second rod member which is pivoted with the first rod member which is in turn fastened pivotally with the rear fork. The second rod member is pivoted with the suspension seat. The urging member has a first end pivoted to the rear fork, and a second end urging removably a pivot of the connection rod set. As the pivot is urged by the urging member, the angle formed by the two rod members becomes greater. As a result, the compression force of the elastic member is overcome to enable the suspension seat to swivel, so as to cause the drive wheel to separate from the rear wheel. When the pivot is not urged by the urging member, the drive wheel comes in contact with the rear wheel.
REFERENCES:
patent: 2578886 (1951-12-01), Isherwood et al.
patent: 3961678 (1976-06-01), Hirano et al.
patent: 4974695 (1990-12-01), Politte
patent: 5388659 (1995-02-01), Pepe
patent: 5423393 (1995-06-01), Felt
patent: 5491390 (1996-02-01), McGreen
patent: 5660242 (1997-08-01), Witthaus
patent: 6095274 (2000-08-01), Patmont
patent: 4240439 (1994-06-01), None
Browdy and Neimark
Dickson Paul N.
Lerner Avraham H.
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