Envelopes – wrappers – and paperboard boxes – Paperboard box – Including a polygonal – nonrectangular wall
Reexamination Certificate
1999-06-28
2001-01-09
Elkins, Gary E. (Department: 3727)
Envelopes, wrappers, and paperboard boxes
Paperboard box
Including a polygonal, nonrectangular wall
C229S104000, C229S117030, C229S117060, C047S041130
Reexamination Certificate
active
06170739
ABSTRACT:
The present invention relates to a container, which is made of a liquid-resistant, planar blank of impregnated cardboard or like material and is formed via folding lines and edge flaps, where the container exists in a starting position in a flat, that is to say folded down condition along a bottom folding line with a double foldable bottom portion, the bottom portion halves of which being adapted to be pulled in by a simple hand grip with a snapped or curved contour along the bottom folding line and thereby hold the container stretched in a ready-for-use condition by means of inherent elastic forces in the bottom portion of the container and adjacent container portions, where a per se liquid-tight container inner portion with an associated bottom portion is connected at opposite edges of the container inner portion to a container outer portion, which forms a bracing, enveloping outer portion for the inner portion.
The afore-mentioned solution is known from NO patent application 943536. In said publication an extra bracing member is proposed which can overlap the bottom portion in the use position and which by means of inherent elasticity together with the elasticity in the bottom portion can ensure the container in place in a use ready condition. It is further proposed to apply separate locking devices, if there is a need for this. Such separate locking devices can for example be fastened to the container at a local portion of its bottom portion by adhesion/welding. Such an extra locking device can if desired be made of another material or of corresponding material, but if desired having greater rigidity.
In practice there is shown a need of being able to effect blocking off the container in a ready stretched out condition so as to be able to prevent unintentional squeezing together of the container.
The container according to the invention is characterised in that a combined bottom-bracing and bottom-closing means is adapted to brace the bottom portion and opposite sides of the container in a direction across a central plane of the container through the bottom folding line of the bottom portion, that the bottom bracing and bottom-closing means comprises a first, permanent bracing section, which is rigidly fastened to the bottom portion on the one side of the bottom folding line, and a second readjustable bracing section, which, when the container is in its flat starting position, projects freely outwards past the bottom folding line, and that the bottom-bracing and bottom-closing means has great inherent rigidity in a direction across the bottom folding line and has a longitudinal dimension across the bottom folding line corresponding to or substantially corresponding to the breadth of the ready-for-use container in a direction across the bottom folding line.
According to the invention a certain local bracing and reinforcement of the bottom portion of the container is achieved, by fastening the combined bottom-bracing and bottom-closing means locally to the bottom portion of the container. In addition there is achieved a possibility for effective bracing and closing off of the bottom portion of the container in the ready-for-use condition of the container, without the danger of unintentional folding together of the container.
Without influencing the ability of the bottom portion to be fixed in an elastically yielding manner, correspondingly as the earlier known solution, the flexibility and elasticity of the bottom portion is utilised in a favourable manner. In addition an extra bracing and closing of the bottom portion is obtained in the intended use position as a consequence of the cooperation of the relatively rigid bottom-bracing and bottom-closing means and the relatively flexible elasticity of the bottom portion.
REFERENCES:
patent: 393899 (1888-12-01), Haines
patent: 2276220 (1942-03-01), LeVeille, Sr.
patent: 2774187 (1956-12-01), Smithers
patent: 2869722 (1959-01-01), Marander et al.
patent: 3145905 (1964-08-01), Moore
patent: 3373917 (1968-03-01), Cox
patent: 3726469 (1973-04-01), Koehler
patent: 3912331 (1975-10-01), Turner et al.
patent: 4109848 (1978-08-01), Kipp et al.
patent: 4289268 (1981-09-01), Paige
patent: 4428500 (1984-01-01), Kohler
patent: 4792086 (1988-12-01), Chen
patent: 4850509 (1989-07-01), Hollenberg
patent: 5156294 (1992-10-01), Nichols
patent: 5788061 (1998-08-01), Hammond
patent: 1586523 (1997-12-01), None
patent: 2231557 (1990-11-01), None
patent: 943536 (1996-03-01), None
Elkins Gary E.
Fulbright & Jaworski LLP
Multi-Pak A/S
LandOfFree
Flexible container for liquid does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Flexible container for liquid, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Flexible container for liquid will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2459321