Heavy-duty shipping container for flowable bulk materials
AssigneeWeyerhaeuser Company
InventorsWilliam J. Remaks, John F. Nugent
Life of this patent
Estimating the term…
Abstract
A heavy-duty shipping container for bulk flowable materials is constructed with an inner tubular sleeve of substantially circular cross section and an outer sleeve of polygonal cross section; the inner and outer sleeves are composed of multi-wall corrugated fibreboard, each designed to accommodate and support a portion of the stacking load of a like heavy-duty shipping container; the inner sleeve being supported by a support pad initially with its upper edge extended outwardly of the upper edge of the outer sleeve; and the support pad being deformable to allow the inner sleeve to displace into the outer sleeve so that both upper edges are in the same horizontal plane after the application of a predetermined pressure of the inner sleeve.
Claims31
A heavy-duty shipping container for flowable bulk materials comprising:
- an outer sleeve vertically extending between a bottom edge and a top edge, said outer sleeve having a polygonal cross-section and comprising a plurality of sidewall panels;
- an inner sleeve, substantially coaxially mounted in the outer sleeve, and vertically extending between a bottom edge and a top edge, said inner sleeve having a substantially circular cross section;
- the inner sleeve bearing centrally along each of the sidewall panels;
- the inner sleeve and outer sleeve each comprising a multi-wall corrugated fibreboard;
- and
- support means, mounted within the outer sleeve and underlying the bottom edge of the inner sleeve, for positioning the top edge of the inner sleeve initially higher than the top edge of the outer sleeve, said support means being deformable responsive to pressure applied to the inner sleeve so that the inner sleeve moves downwardly to a post-loading position in which the top edges of the inner and outer sleeves are in the same horizontal plane, whereby each of the inner and outer sleeves can accommodate a portion of the load of a similar container stacked thereon.
A heavy-duty shipping container for flowable bulk materials comprising:
- an outer sleeve vertically extending between a bottom edge and a top edge, said outer sleeve having a polygonal cross-section and comprising a plurality of sidewall panels;
- an inner sleeve, substantially coaxially mounted in the outer sleeve, and vertically extending between a bottom edge and a top edge, said inner sleeve having a substantially circular cross section;
- the inner sleeve bearing centrally along each of the side wall panels;
- the inner sleeve and outer sleeve each comprising a multi-wall corrugated fibreboard;
- support means, mounted within the outer sleeve and underlying the bottom edge of the inner sleeve, for positioning the top edge of the inner sleeve initially higher than the top edge of the outer sleeve, said support means being deformable responsive to pressure applied to the inner sleeve so that the inner sleeve moves downwardly to a post-loading position in which the top edges of the inner and outer sleeves are in the same horizontal plane, whereby each of the inner and outer sleeves can accommodate a portion of the load of a similar container stacked atop the said container;
- and
- the inner sleeve having an inner circumferential facing with a multiplicity of false scores extending verticially along the sleeve.
Dependencies are inferred from the claim text.