Trunks and hand-carried luggage – Supporting devices – Wheeled
Reexamination Certificate
2001-07-06
2002-09-24
Young, Lee (Department: 3727)
Trunks and hand-carried luggage
Supporting devices
Wheeled
C016S01800R, C016S047000, C280S047315, C280S037000
Reexamination Certificate
active
06454065
ABSTRACT:
BACKGROUND OF THE INVENTION
The present invention relates to trolley suitcase and more particularly to a wheel rack improvement of a trolley suitcase.
A trolley suitcase is indispensable in traveling. Typical trolley suitcase
10
(as shown in
FIG. 1
) includes a pair of wheels
11
on the bottom for enabling the suitcase to be slidable on the ground, a lower seat
12
secured to a lower portion of the suitcase, an upper seat
13
secured to a top of the suitcase, a pair of tubular sleeves
15
spacedly disposed between the upper and the lower seat
12
and
13
for protecting a puller
14
which is slidably disposed inside the tubular sleeves
15
and a press button
16
on the top of the puller
14
for releasing a positioning device between the tubular sleeves
15
and the puller
14
which may draw out of the tubular sleeves
15
to pull the suitcase
10
sliding on the ground along with the walking of a traveler. Although a large part of the weight is shared by the wheels
11
when the suitcase
10
is lilt. But a certain part of weight is burdened by the hand of the traveler. If the suitcase
10
is very heavy, the traveler burdens more weight.
SUMMARY OF THE PRESENT INVENTION
The present invention has a main object to provide a wheel rack improvement of a trolley suitcase having a pair of corner members each of which has a main prop and a subordinate prop operated by a puller or a footboard. When the trolley suitcase is tilt relative to the ground, the center of gravity of the main prop is displaced to depart from the subordinate prop. So that the wheels of the props all touch the ground.
The present invention will become more fully understood by reference to the following detailed description thereof when read in conjunction with the attached drawings.
REFERENCES:
patent: 2123707 (1938-07-01), Block
patent: 5533231 (1996-07-01), Bai
patent: 5709400 (1998-01-01), Bonnier et al.
patent: 5758752 (1998-06-01), King et al.
patent: 5815885 (1998-10-01), Chen
patent: 6279705 (2001-08-01), Wu
patent: 6289554 (2001-09-01), Wang
patent: 6345414 (2002-02-01), Chen
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