Scooter

Details Scooter Scooter

2001-03-21

2002-02-12

Johnson, Brian L. (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...

C180S065600, C280S087041, CD21S423000

Reexamination Certificate

active

06345678

ABSTRACT:

BACKGROUND OF THE INVENTION
The present invention relates to a scooter. More particularly, the present invention relates to a scooter which has a rear wheel drive mechanism.
Referring to
FIG. 1
, a conventional scooter
10
has a main frame
11
, a rear mount
14
, a rear wheel
15
, and a rear wheel drive mechanism. The rear wheel drive mechanism has a battery set
12
disposed on a bottom of the main frame
11
, an electric motor
13
connected to the rear mount
14
, a wheel shaft
16
connected to the rear mount
14
and the rear wheel
15
, the electric motor
13
having a motor shaft
17
, a gear
18
connected to the motor shaft
17
, a pinion
18
connected to the wheel shaft
16
, and a belt
19
surrounding the gear
18
and the pinion
18
. However, the belt
19
will hurt a user while the user touches the belt
19
. Furthermore, a vibration of the belt
19
will loosen the belt
19
or tighten the belt
19
so that the drive of the rear wheel
15
is not smooth.
SUMMARY OF THE INVENTION
An object of the present invention is to provide a scooter which has a worm and a worm wheel engaging with the worm so that a drive of a rear wheel is smooth.
Another object of the present invention is to provide a scooter which has a first protective casing and a second protective casing to protect a worm and a worm wheel.


REFERENCES:
patent: 3710965 (1973-01-01), Joosten
patent: 5020621 (1991-06-01), Martin
patent: 5222567 (1993-06-01), Broadhead et al.
patent: 5330026 (1994-07-01), Hsu et al.
patent: 5848660 (1998-12-01), McGreen
patent: 5894898 (1999-04-01), Catto
patent: 5913937 (1999-06-01), Lin
patent: 6014915 (2000-01-01), Evans
patent: 6029763 (2000-02-01), Swisher
patent: 6129166 (2000-10-01), Sueshige et al.
patent: 2001/0011202 (2001-08-01), Yamawaki

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