Horizontally supported planar surfaces – Industrial platform – Stacking
Reexamination Certificate
2000-04-06
2001-07-10
Cuomo, Peter M. (Department: 3636)
Horizontally supported planar surfaces
Industrial platform
Stacking
C280S033998
Reexamination Certificate
active
06257152
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention is related to a structure of pallet for stacking pallets with wheels, and especially to a pallet structure for stacking pallets with wheels in the same orientation or mutually orthogonally. The pallets all have the function of direction correcting for positioning during stacking.
2. Description of the Prior Art
In transporting goods in a factory or a transporting station, the goods mostly are transported after stacking for the purpose of convenient and efficient transporting and saving manpower and working hours. Pallets can be divided into two kinds, namely, pallets with wheels and pallets without wheels. The pallets without wheels have larger areas for stacking of goods, but they need oil pressure trailers to get the object of transporting; while the pallets with wheels are mounted beneath themselves with wheel sets, they can get the object of transporting without an oil pressure trailer, and thus is convenient.
FIGS. 1 and 2
show a conventional movable pallet, it is provided beneath the pallet
30
with two movable wheels
40
and two fixed wheels
41
to allow the pallet
30
to change direction. The rearside of the pallet
30
is opened, while the remaining three sides are provided with a continuous stop barrier
31
formed integrally with the pallet
30
. Therefore, when goods are placed on the pallet
30
, they are limited by the stop barrier
31
from dropping out of the pallet
30
. The pallet
30
is further provided with a plurality of slide strips
32
for reducing friction between the goods and the pallet
30
. The pallet
30
is provided with two grooves
33
on the bottom and near the right and left sides thereof respectively, width of the two grooves
33
is slightly larger than that of the stop barrier
31
to allow mutual lapping of a plurality of pallets
30
.
It can be seen from the above statement that, when in stacking of movable pallets, the grooves
33
on a pallet
30
are engaged with the stop barrier
31
of a lower pallet
30
to get the object of stacking.
Although the pallets can get the object of stacking, the stop barrier
31
provided on the three sides leaving the other one side opened makes the upper pallet
30
tend to drop from this opened side when the pallets are stacked. The pallets can only be stacked in a mutual orthogonal state; this makes them occupy a larger storing space. Therefore, the structure thereof for stacking shall still be improved.
SUMMARY OF THE INVENTION
In view of the above statement, the primary object of the present invention is to provide a structure of pallet for stacking pallets with wheels. Wherein, each pallet is provided on the bottom of thereof with movable wheels and fixed wheels, a stop barrier is provided on the three sides of the pallet, the remaining one side is provided with a beveled surface, two longitudinal grooves are provided on the two mutual opposite longitudinal sides of the pallet, a plurality of insertion holes are provided between the grooves, and a plurality of engaging portions and engaging strips are provided on the bottom of the pallet. When the pallets are stacked mutually, they are stacked in a mutual orthogonal state, the engaging strips and the engaging portions on the bottom of the pallet can be respectively engaged in the insertion holes and the longitudinal grooves on a lower pallet. So that when the pallets are stacked mutually, they have the function of direction correcting for positioning, and displacement and falling down of the pallets can be surely prevented.
The present invention will be apparent in its object and detailed structure by the persons skilled in the art after reading the detailed description of the preferred embodiment thereof in reference to the accompanying drawings.
REFERENCES:
patent: 2420625 (1947-05-01), Stalnaker et al.
patent: 5445396 (1995-08-01), Sebor
patent: 5505140 (1996-04-01), Wittmann
patent: 5823549 (1998-10-01), Morgan, Jr.
patent: 6199487 (2001-03-01), Coddington
Anderson Jerry A.
Bacon & Thomas PLLC
Cuomo Peter M.
LandOfFree
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