Special receptacle or package – Structural features for vertical stacking – i.e. – similar... – Having vertical projecting element or recess for interlock
Patent
1995-03-02
1995-08-08
Pollard, Steven M.
Special receptacle or package
Structural features for vertical stacking, i.e., similar...
Having vertical projecting element or recess for interlock
206511, 220 15, B65D 2100
Patent
active
054391130
ABSTRACT:
A bulk container integrally molded from a plastic material and providing substantially exclusive transfer of vertical loads thru the corners of a lower container during stacking, and increased volumetric capacity. The front, rear and side sections of the container are integrally formed with a bottom wall portion to form a containment volume with a plurality of corners. A plurality of nesting protrusions extend downwardly from the lower portion of the corners and a corresponding plurality of nesting recesses are formed in the upper portion of the corners so that two containers can be vertically stacked with each protrusion mated with a corresponding recess. The corners include reinforcing vertical column portions having inwardly spaced wall portions blending into containment wall portions. The containment wall portions extend outwardly from the inwardly spaced wall portions. The bottom wall portion tapers downwardly in the direction outward from the center and blends into the lower regions of the containment wall portions. Vertical load transfer occurs between the upper container protrusions and the corresponding recess, vertical column portions and protrusions of the underlying container.
REFERENCES:
patent: 3214056 (1965-10-01), Box
patent: 3442418 (1969-05-01), Stromberg
patent: 3481502 (1969-12-01), Slayman
patent: 3680735 (1972-08-01), Lucas
patent: 4197958 (1980-04-01), Zeni et al.
patent: 4674647 (1987-06-01), Gyenge et al.
patent: 5184726 (1993-02-01), Box
MacroPlastics, Inc.
Pollard Steven M.
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