Land vehicles – Wheeled – Extensible
Reexamination Certificate
2000-09-29
2001-11-20
Schwartz, Christopher P. (Department: 3613)
Land vehicles
Wheeled
Extensible
C267S005000
Reexamination Certificate
active
06318750
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The invention relates to a shock absorbing device for a stroller, more particularly to a shock absorbing device for damping impact transmitted from the front wheel of a three-wheeled stroller.
2. Description of the Related Art
Strollers equipped with a shock absorbing device for damping impact transmitted from the rear wheels thereof are known in the art. With reference to
FIG. 1
, a conventional three-wheeled stroller
1
is shown to include a frame
11
, a front wheel
12
mounted on a front wheel axle
121
and connected to front legs
111
of the frame
11
, and a pair of rear wheels
13
mounted at a rear end of the frame
11
. For the sake of comfort, two shock absorbing devices
14
are disposed on the frame
11
above the rear wheels
13
.
To enhance comfort, there is a need for a shock absorbing device that absorbs the impact transmitted from the front wheel of the stroller.
SUMMARY OF THE INVENTION
Therefore, the main object of the present invention is to provide a shock absorbing device for a stroller that damps impact transmitted from the front wheel of the stroller.
Accordingly, a shock absorbing device of the present invention is adapted for damping impact transmitted from a front wheel of a stroller which further includes a seat frame, a rear wheel axle, a pair of rear legs, and a front wheel axle. The seat frame has front and rear sides opposite to each other in a longitudinal direction, each of the front and rear sides having left and right ends opposite to each other in a first transverse direction relative to the longitudinal direction. The rear wheel axle is disposed transverse to the longitudinal direction, and has two lateral ends provided with two rear wheels which are rotatable about a first axis parallel to the rear wheel axle. The rear legs are each disposed to interconnect a respective one of the two lateral ends and a respective one of the left and right ends of the rear side. The front wheel axle has two anchored ends and defines a second axis parallel to the first axis. The front wheel is mounted on the front wheel axle and is rotatable about the second axis. The shock absorbing device includes left and right lever members, left and right front leg members, a pair of coupling members, and a pair of biasing members. Each of the left and right lever members includes an anchoring end adapted to be secured to a respective one of the two anchored ends, an intermediate portion extending rearwardly and upwardly from the anchoring end so as to form an upward surface, and a weight end extending from the intermediate portion towards the seat frame. Each of the left and right front leg members includes an upper end adapted to be connected to a respective one of the left and right ends of the front side, a middle portion extending forwardly and downwardly from the upper end so as to form a downward surface which faces the upward surface of a respective one of the left and right lever members in a second transverse direction, and an engaged end extending from the middle portion towards the front wheel axle. Each of the coupling members includes a mounting wall extending in the second transverse direction for positioning the engaged end of a respective one of the left and right front leg members, and a pivoting pin disposed on the mounting wall with a pivoting axis transverse to the second transverse direction for mounting pivotally the intermediate portion of a respective one of the left and right lever members at a fulcrum proximate to the weight end such that a part of the intermediate portion proximate to the anchoring end is spaced apart from the engaged end in the second transverse direction. Each of the biasing members is disposed to bias the engaged end of a respective one of the left and right front leg members to move towards or away from the intermediate portion of a respective one of the left and right lever members in the second transverse direction when tensioned or compressed.
REFERENCES:
patent: 4491335 (1985-01-01), Evron
patent: 5301931 (1994-04-01), Bigo
Bartl C. T.
Ladas & Parry
Schwartz Christopher P.
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