Land vehicles – Wheeled – Occupant propelled type
Reexamination Certificate
2003-11-05
2004-11-02
Morris, Lesley D. (Department: 3611)
Land vehicles
Wheeled
Occupant propelled type
C280S282000
Reexamination Certificate
active
06811173
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to baby tricycles and, more specifically, to a baby tricycle steering control arrangement, which keeps the spring member and the link from sight and out of reach of children.
2. Description of the Related Art
A conventional baby tricycle
7
, as shown in
FIG. 1
, comprises a base frame
71
, a lug
72
fixedly fastened to the rear side of the base frame
71
, a barrel
73
fixedly fastened to the lug
72
in vertical, a steering control bar
74
pivotally coupled to the barrel
73
(see FIG.
2
), an end block
75
fixedly fastened to the bottom end of the steering control bar
74
and suspended below the barrel
73
, a head unit
8
, a transverse bar
81
fixedly provided at the head unit
8
and fastened pivotally with the front side of the base frame
71
, a link
9
coupled between a lug
751
at the end block
75
and the transverse bar
81
for enabling the steering control bar
74
to control the steering direction of the head unit
8
, and a spring member S connected between a lug
811
at the transverse bar
81
of the head unit
8
and a hole
711
at the base frame
71
(see FIG.
3
). When biasing the steering control bar
74
, the link
9
is forced to turn the head unit
8
to the left or the right (see FIG.
4
). When released the biasing force from the steering control bar
74
, the spring member S automatically returns the head unit
8
to the middle position for moving straightly forwards.
This design of baby tricycle steering control arrangement is functional, however it is not safe in use. Because the spring member S and the link
9
are exposed to the outside of the base frame
71
, they are not kept out of reach of children. Further, when the baby tricycle fell to the ground, the spring member S and the link
9
tend to be permanently deformed or damaged by an external body.
SUMMARY OF THE INVENTION
The present invention has been accomplished under the circumstances in view.
It is one object of the present invention to provide baby tricycle steering control arrangement, which automatically returns the head unit of the baby tricycle to the middle position after release of bias force from the steering control bar.
It is another object of the present invention to provide baby tricycle steering control arrangement, which is safe in use.
According to one aspect of the present invention, the baby tricycle steering control arrangement comprises a hollow base frame, a head unit and a steering control bar respectively pivoted to the front and rear sides of the base frame, a swivel member pivoted to the pivot between the front side of the base frame and the head unit and fixedly connected to the head unit, a link received in the hollow base frame and coupled between the bottom end of the steering control bar and the swivel member for enabling the head unit to be controlled by the steering control bar, and a spring member, coupled between the swivel member and the base frame and adapted to return the head unit to the middle position automatically after release of biasing force from the steering control bar.
According to another aspect of the present invention, the spring member is received in the hollow base frame, and kept out of reach of children.
REFERENCES:
patent: 5924713 (1999-07-01), Li
patent: 6120048 (2000-09-01), Li
patent: 6530589 (2003-03-01), Ma
patent: 6612598 (2003-09-01), Wu
patent: 6666470 (2003-12-01), Li
Lum L.
Morris Lesley D.
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