초록 ▼

An octagonal bulk box well suited for use in pallet storage and transportation of large quantities of flowable solids has a construction allowing the box to be instantly manually erected by the end user. A box precursor which is erectable from a substantially flat condition to form the box is formed

An octagonal bulk box well suited for use in pallet storage and transportation of large quantities of flowable solids has a construction allowing the box to be instantly manually erected by the end user. A box precursor which is erectable from a substantially flat condition to form the box is formed of a main blank providing the sidewall panels of the box and a floor blank from which the entire box floor structure is constructed. By forming the entire floor from a floor blank separate from the main blank, it is possible to reduce material expense and waste, since the entire floor blank can be constructed of fiberboard lower in strength and cost than that required for the sidewalls. The floor blank is attached to the main blank by connecting flaps extending about substantially the entire lower perimeter of the box walls, on an outside thereof. This configuration serves to reinforce the lower perimeter of the box sidewalls against the large outward bulge forces generated by flowable loads, particularly in the lower third of the box.

대표청구항 ▼

[ I claim:] [1.] In a collapsible box assembly adapted to be manually convertible from a substantially flat box precursor to an erected box, said box assembly comprising (1) a wall structure including a plurality of wall panels of sheet material pivotally connected along adjacent longitudinal edges

[ I claim:] [1.] In a collapsible box assembly adapted to be manually convertible from a substantially flat box precursor to an erected box, said box assembly comprising (1) a wall structure including a plurality of wall panels of sheet material pivotally connected along adjacent longitudinal edges to form a closed loop, said wall panels comprising pairs of wall panels laid-up against each other in said box precursor and separable from each other to form a polygonal tubular structure in said erected box, by exertion of opposing forces on opposing ones of said longitudinal edges; and (2) a floor structure attached to said wall structure, said floor structure comprising a plurality of floor panels of sheet material, said floor panels comprising pairs of floor panels laid-up against each other, in generally coplanar relation to said wall panels, in said box precursor, said pairs of floor panels being configured such that separation of said wall panel pairs to form said polygonal tubular structure causes a separation of said floor panel pairs and movement of said floor panels at least partially into a box floor forming condition, said floor panels, when placed fully in said box forming condition, partially overlapping with each other in a multi-layer configuration to substantially completely cover an end of said polygonal tubular structure, the improvement wherein:said wall structure is formed from a first blank of sheet material forming no part of said floor structure, said floor structure comprising a second blank of sheet material distinct from said first blank;said floor structure comprises a pair of main floor panels hinged to each other about a longitudinal fold line; andeach main floor panel is flanked by a pair of flanking floor panels hingedly connected thereto through respective first connecting web panels.