Envelopes – wrappers – and paperboard boxes – Paperboard box – End structure
Patent
1990-08-29
1991-04-16
Elkins, Gary E.
Envelopes, wrappers, and paperboard boxes
Paperboard box
End structure
229 45, 229922, 229DIG12, B65D 310
Patent
active
050075799
ABSTRACT:
A cylindrical container consisting of a spirally wound paperboard tube, and a pair of closures for sealing the upper and bottom ends thereof. Each closure is formed of a pair of die-cut paperboard discs glued together over a large common surface area so that the discs are warp-resistant. The discs differ slightly in size, so that the smaller disc can engage the interior of the tubular body in a friction-fitting relationship, while the larger disc provides an annular ring to receive the edge of the tubular body. The spirally wound paperboard tube possesses significant axial strength, so that several containers can be stacked thereon, and also possesses sufficient hoop strength to resist deformation or denting, under normal conditions of use.
REFERENCES:
patent: 1297152 (1919-03-01), Hackney
patent: 2149625 (1939-03-01), Pabst
patent: 2180882 (1939-11-01), Royal
patent: 2392959 (1946-01-01), Van Saun
patent: 2406758 (1946-09-01), Gazette
patent: 3383025 (1968-05-01), Ferrey et al.
patent: 3641732 (1972-02-01), Fujio
patent: 4347934 (1982-09-01), Goodman
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