Land vehicles – Wheeled – Occupant propelled type
Reexamination Certificate
2002-01-15
2003-12-23
Lerner, Avraham (Department: 3611)
Land vehicles
Wheeled
Occupant propelled type
C280S272000, C280S089000
Reexamination Certificate
active
06666470
ABSTRACT:
FIELD OF THE INVENTION
The present invention relates generally to a children's tricycle, and more particularly to a steering structure of the children's tricycle.
BACKGROUND OF THE INVENTION
As shown in
FIG. 1
, a children's tricycle “A” of the prior art comprises two handlebars A
1
, a rear frame A
2
, and a connection frame A
3
for connecting the handlebar A
1
and the rear frame A
2
by welding. The rear frame A
2
has a support tube A
21
which is provided with two seats A
22
for mounting a rail A
4
by welding.
In operation, the tricycle “A” is moved forward by an adult who pushes the tricycle “A” behind the rear frame A
2
. The steering of the tricycle “A” in motion is done by a child who is seated on the tricycle, with both hands holding the handlebars A
1
. The front wheel of the tricycle “A” is apt to jam when the handlebars A
1
are turned improperly or excessively, thereby resulting in overturning of the tricycle. In addition, it is tiresome for an adult to push the tricycle for a prolonged period of time. The steering structure of the prior art tricycle is rather primitive at best and is prone to accidents.
SUMMARY OF THE INVENTION
The primary objective of the present invention is to provide a children's tricycle with a steering structure which is intended to overcome the deficiencies of the prior art steering structure described above.
In keeping with the principle of the present invention, the foregoing objective of the present invention is attained by a children's tricycle comprising a front frame, a bridging frame, a rear frame, and an auxiliary steering rod. The front frame is fastened with the front end of the bridging frame in conjunction with a connection seat, so as to prevent the front wheel of the tricycle from being jammed.
The features and the advantages of the present invention will be more readily understood upon a thoughtful deliberation of the following detailed description of the present invention with reference to the accompanying drawings.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1
shows a perspective view of a children's tricycle of the prior art.
FIG. 2-A
shows an exploded view of a children's tricycle of the present invention.
FIG. 2-B
shows an exploded view of the connection seat of the present invention.
FIG. 2-C
shows a perspective view of the connection seat of the present invention in combination.
FIG. 2-D
shows a perspective view of the inverted connection seat of the present invention in combination
FIG. 3-A
shows a perspective view of the tricycle of the present invention
FIG. 3-B
shows a partial schematic view of the tricycle of the present invention
FIG. 4
shows a schematic view of the tricycle of the present invention in straightforward motion.
FIG. 5
shows a schematic view of the tricycle of the present invention in the midst of making a left turn.
FIG. 6
shows a schematic view of the tricycle of the present invention in the midst of making a right turn.
REFERENCES:
patent: 638112 (1899-11-01), Graham
patent: 2816775 (1957-12-01), Costello
patent: 3237961 (1966-03-01), McMullen
patent: 3485507 (1969-12-01), Christof
patent: 4029329 (1977-06-01), Chambers
patent: 4887827 (1989-12-01), Heggie
patent: D332591 (1993-01-01), Reely
patent: 5904363 (1999-05-01), Li
patent: 5924713 (1999-07-01), Li
patent: 6120048 (2000-09-01), Li
patent: 6302421 (2001-10-01), Lee
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