Land vehicles – Wheeled – Extensible
Reissue Patent
2002-02-11
2004-02-24
Johnson, Brian L. (Department: 3618)
Land vehicles
Wheeled
Extensible
C280S047315
Reissue Patent
active
RE038436
ABSTRACT:
FIELD OF THE INVENTION
This invention relates to a push cart, and more particularly, to a cart which can be operated by the handle to retract or to expand a front support and
a
at least one
wheel frame.
BACKGROUND OF THE INVENTION
In order to produce a
compact easy to carry
compact, easy-
to
-
carry
push cart, various
prior art
carts
are
were
made in compact size
,
by folding each parts of a
cart,
cart;
however, such design still possesses many defects. Later, a compact push cart was developed which comprises a handle that is foldable against the supporting rod and to link wheels to collapse inwardly or to expand
inwardly,
inwardly;
however, the
support will still be needed to operate manually
retraction of different parts are operated separately
.
OBJECT OF THE INVENTION
This
It
is the primary object of the present invention to provide a push cart which is easy to operate.
It is another object of the present invention to provide a push cart which structure is more solid and more compact.
It is a further object of the present invention to provide a push cart which is less expensive to produce.
REFERENCES:
patent: 3043603 (1962-07-01), Major, Sr.
patent: 3659867 (1972-05-01), Curry
patent: 4315632 (1982-02-01), Taylor
patent: 4659096 (1987-04-01), Leimgruber
patent: 4754985 (1988-07-01), Im et al.
patent: 4917392 (1990-04-01), Ambasz
patent: 4993727 (1991-02-01), vom Braucke et al.
patent: 5127662 (1992-07-01), Spak
patent: 5312006 (1994-05-01), Lag
patent: 5348325 (1994-09-01), Abrams
patent: 5439239 (1995-08-01), Su
patent: 5468005 (1995-11-01), Yang
patent: 5803471 (1998-09-01), DeMars et al.
patent: 5984327 (1999-11-01), Hsieh et al.
patent: 6425599 (2002-07-01), Tsai
patent: 217650 (1941-10-01), None
patent: ZL98246528.9 (1998-11-01), None
patent: 1943253 (1966-07-01), None
patent: 1982824 (1968-04-01), None
patent: 29714225 (1997-11-01), None
patent: 29807428 (1998-09-01), None
patent: 0352515 (1990-01-01), None
patent: 0352515 (1993-02-01), None
patent: 1406272 (1975-09-01), None
Decision 4 O 460/99 of the District Court of Dusseldorf in Germany (defendant was found infringing Braucke's patent EP0352515 by coping a model shown in DE29714225U1).
Fischmann Bryan
Johnson Brian L.
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