Envelopes – wrappers – and paperboard boxes – Paperboard box – A sidewall includes a horizontally or downwardly extending...
Reexamination Certificate
2000-02-18
2001-08-07
Elkins, Gary E. (Department: 3727)
Envelopes, wrappers, and paperboard boxes
Paperboard box
A sidewall includes a horizontally or downwardly extending...
C229S918000, C229S919000
Reexamination Certificate
active
06270009
ABSTRACT:
This invention relates to a cardboard broadsheet for constructing a stackable box with angular supports consisting of a bottom and four side walls.
It is the aim of the invention to design a broad-sheet from which a stackable box may be constructed showing a load bearing capacity that is unusual up to now. The invention also aims at designing the broadsheet such, that the mechanical construction of the box is carried out with technically extremely reliable means.
To make this possible in accordance with the invention, two opposite edges of the bottom are extended by a first transverse strip which is foldable with respect to the bottom of the box, and a second transverse strip which is foldable with respect to the first transverse strip, each time according to folding lines extending parallel to above said edges, whereby
a) the first transverse strip is extended along both its extremities by a wing which results in angular supports by folding each wing according to several parallel lines extending perpendicularly to above said folding lines and resulting in small strips;
b) the second transverse strip is extended along both sides of its central portion by a wing consisting of parts with a folding line in between, resulting in glueing surfaces meant to be glued together, at the one hand with above said central portion, and at the other hand with above said first transverse strip.
Still according to the invention, in above said central portion of above said second transverse strip, a lip is cut out showing a folding line that coincides with above said folding line between the first and second transverse strips in order to be glued to this second transverse strip.
A further feature of the invention is to be found in the fact that, in above said wings resulting in above said angular supports, at the site of the folding line shown substantially in the middle of the angular support, a portion is provided which protrudes upwards when the box is ready for use.
REFERENCES:
patent: 3102674 (1963-09-01), Hamilton
patent: 3973723 (1976-08-01), Owens
patent: 4266714 (1981-05-01), Crane
patent: 4770339 (1988-09-01), Weimer
patent: 5458283 (1995-10-01), Southwell et al.
patent: 5649663 (1997-07-01), Pestow, Jr.
patent: 5673848 (1997-10-01), Garza
patent: 0485032 (1992-05-01), None
patent: 0575004 (1993-12-01), None
patent: 1002381 (1997-08-01), None
Dykema Gossett PLLC
Elkins Gary E.
R & F Folding Boxes
LandOfFree
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