Land vehicles – Wheeled – Coasters
Reexamination Certificate
2000-05-02
2001-01-16
Camby, Richard M. (Department: 3618)
Land vehicles
Wheeled
Coasters
C280S087041
Reexamination Certificate
active
06173976
ABSTRACT:
BACKGROUND AND SUMMARY OF THE INVENTION
The present invention relates to a kick scooter, and more particularly to a folding collapsible kick scooter.
Figures from
1
through
4
show a folding collapsible kick scooter according to the prior art. According to this design, the folding collapsible kick scooter comprises a folding collapsible coupling structure connected between the handlebar and front fork assembly
92
, which is supported on a front wheel, and the base frame, which is supported on a rear wheel. The coupling structure comprises a bracket
95
fixedly fastened to the handlebar and front fork assembly
92
, and a coupling frame
93
fixedly mounted on a front side of the base frame and coupled to the bracket
95
. The coupling frame
93
comprises two smoothly arched sliding slots
931
respectively formed on two opposite lateral side walls thereof, and two retaining holes
932
at two distal ends of each sliding slot
931
. The bracket
95
has two bottom pivot holes
952
pivotally coupled to the coupling frame
93
by a pivot
96
, and two upper coupling holes
951
coupled between the arched sliding slots
931
on the two opposite lateral side walls of the coupling frame
93
by a shaft
97
. The shaft
97
is inserted through the arched sliding slots
931
on the two opposite lateral side walls of the coupling frame
93
, and moved with the bracket
95
between the two retaining holes
932
at two distal ends of each arched sliding slot
931
. A spring member
90
connected between the pivot
96
and the shaft
97
to pull the shaft
97
downwards. Further, a control handle
98
is mounted on the bracket
95
, having a hook
981
hooked on the shaft
97
. The control handle
98
is turned between a first position where the shaft
97
is lifted and disengaged from the retaining hole
932
at one end of the arched sliding slot
931
on each lateral side wall of the coupling frame
93
for enabling the folding collapsible kick scooter to be collapsed, and a second position where the shaft
97
is released from the hook
981
and pulled downwards by the spring member
90
into engagement with one retaining hole
932
at one end of the arched sliding slot
931
on each lateral side wall of the coupling frame
93
. This coupling structure is complicated, and its manufacturing cost is high. Further, the shaft
97
tends to be forced out of the retaining hole
932
at one end of the arched sliding slot
931
on each lateral side wall of the coupling frame
93
by an external force, causing the folding collapsible kick scooter to be suddenly collapsed.
The present invention provides a folding collapsible kick scooter, which eliminates the aforesaid drawbacks. According to one aspect of the present invention, the folding collapsible kick scooter comprises a base frame supported on a rear wheel a handlebar and front fork assembly supported on a front wheel, a connecting bar having one end fixedly connected to the handlebar and front fork assembly and a rear end pivotally connected between two arched upright lugs at the base frame by a pivot for enabling the handlebar and front fork assembly to be turned with the connecting bar relative to the base frame between an extended position and a collapsed position, and a quick-release lock installed in the lugs and the connecting bar and controlled to lock the handlebar and front fork assembly and the connecting bar. The quick-release lock is comprised of a locking lever, a holding-down block, a shaft inserted through an arched slot on each lug, and a cap nut. The shaft has a flat rear end moved with the locking lever between two expanded ends of an arched slot on one lug, and forced into engagement with two protruded portions in one expanded end of the arched slot upon a 90° rotary motion of the shaft with the locking lever. The flat rear end of the shaft is disengaged from the protruded portions in one expanded end of the arched slot when rotating the shaft with the locking lever through 90° in the reversed direction. According to another aspect of the present invention, the handlebar and front fork assembly comprises a vertical handlebar stem, and a folding collapsible handlebar connected to a top end of the vertical handlebar stem. The folding collapsible handlebar comprises an outer sleeve fixedly connected to the handlebar stem, two tubular hand grips respectively pivoted to two distal ends of the outer sleeve, and lock means for locking tubular hand grips in the operative position.
REFERENCES:
patent: 2170978 (1939-08-01), Smith
patent: 2546711 (1951-03-01), Amendt
patent: 5039121 (1991-08-01), Holter
patent: 5848660 (1998-12-01), McGreen
patent: 596 064 (1925-10-01), None
patent: 174175 (1922-01-01), None
patent: 217119 (1924-06-01), None
patent: 222668 (1924-10-01), None
Camby Richard M.
Varndell & Varndell PLLC
LandOfFree
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