Carrier with 360° rotatable front wheel unit

Details Carrier with 360° rotatable front wheel unit Carrier with 360° rotatable front wheel unit

2000-01-12

2001-11-13

Mai, Lanna (Department: 3619)

Land vehicles

Wheeled

Stable vehicles, handle-propelled

C280S642000, C280S658000, C188S00200R, C188S019000

Reexamination Certificate

active

06315309

ABSTRACT:

BACKGROUND OF THE INVENTION
1. Field of the Invention
The invention relates to a carriage, more particularly to a carriage with a 360° rotatable front wheel unit.
2. Description of the Related Art
Referring to
FIG. 1
, a conventional baby carriage is shown to include a carriage frame
10
that has a front frame portion provided with a front wheel
15
, and a rear frame portion provided with a pair of rear wheels
13
(only one is visible in FIG.
1
). A seat member
11
is disposed between the front and rear frame portions. A footrest
14
is mounted on the front frame portion below the seat member
11
. An inverted U-shaped handlebar
12
has two lower connecting ends connected securely to a backrest
111
of the seat member
11
.
Some disadvantages of the aforesaid conventional carriage reside in that rotation of the front wheel
15
about a vertical axis is limited, thereby inconveniencing the person pushing the conventional carriage. In addition, no brake unit is provided to overcome movement of the carriage on a sloped surface.
SUMMARY OF THE INVENTION
The first object of this invention is to provide a carriage with a 360° rotatable front wheel unit.
The second object of this invention is to provide a carriage with a brake cable unit that does not get entangled with the front wheel unit when the latter rotates about a vertical axis.
Accordingly, a carriage of the present invention includes a carriage frame which consists of a wheeled rear frame portion and a front wheel-carrying frame portion. The front wheel-carrying frame portion has a lowermost section that defines a vertical accommodating hole which extends in an axial direction. A front wheel unit includes a fork mounting member disposed rotatably in the accommodating hole, and having a fork connecting portion that extends downwardly and outwardly of the accommodating hole, and a retaining portion opposite to the fork connecting portion in the axial direction. A fork unit has an upper end fixed to the fork connecting portion of the fork mounting member and co-rotatable therewith, and a lower end with a wheel mounted rotatably thereon about a horizontal axis. A locking member is provided on the lowermost section of the front wheel-carrying frame portion for retaining rotatably the retaining portion of the fork mounting member in the accommodating hole.


REFERENCES:
patent: 4664395 (1987-05-01), McCoy
patent: 5669624 (1997-09-01), Eichhorn
patent: 5863061 (1999-01-01), Ziegler et al.
patent: 5983745 (1999-11-01), Petrak

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