US 3433402 A
Description (OCR text may contain errors)
March 18, 1969 K. R. PERSSON CARTON BOX AND BLANK THEREFOR Sheet 1 of5 Filed April 14. 1966 INVENTOR. Kual Rune Peasson BY: m I,
ha WM March 18, 1969 K. R. PERSSON CARTON BOX AND BLANK THEREFOR Sheet Z of 5 Filed April 14. 1966 K. R. PERSSON CARTON BOX AND BLANK THEREFOR March 18, 1969 3 hrs Sheet Filed April 14. 1966 INVENTOR. \(MJ Rune Penssm my $15 m g March 18, 1969 K. R. PERSSON 3,433,402
CARTON BOX AND BLANK THEREFOR Filed April 14. 1966 Sheet 4 of 5 FIG- 6 INVENTOR. Kai" Run: Easson BY mmy Mummy March 18, 1969 K. R. PERSSON 3,433,402
CARTON BOX AND BLANK THEREFOR Filed April 14, 1966 Sheet 5 of 5 FIG. 7
- INVENTOR. Km Rape Ebasso g mash-3d:
mummy United States Patent 3,433,402 CARTON BOX AND BLANK THEREFOR Karl Rune Persson, Halmstad, Sweden, assignor to Sprinter-Pack AB, Halmstad, Sweden Filed Apr. 14, 1966, Ser. No. 542,504 Claims priority, application Sweden, Apr. 23, 1965,
5,346/ 65 US. Cl. 229-33 2 Claims Int. Cl. B65d /22, 5/02, 5/66 ABSTRACT OF THE DISCLOSURE The present invention relates to carton boxes erected from a single blank and comprising a bottom tray and a lid tray fitting over the side walls of the bottom tray. The lid tray is hingedly connected to one of the side walls of the bottom tray by means of a hinge panel which is secured in a position on the outer side of the side of the bottom tray. The lower edge of the hinge panel forms a hinged connection with the lower edge of the adjacent side of the lid tray. The height of the hinge panel may be equal to the height of the box but is preferably about half or less of the height of the box in order to save material and to enable an easy opening of the box.
The general object of the invention is to provide a blank of the character referred to which is well adapted to be erected in an erecting machine to form a carton box in which the hinge panel is effectively locked in a simple manner.
These and other objects of the invention and the manner in which they are attained according to the invention will be described more in detail with reference to the accompanying drawings showing some embodiments of the invention by way of example.
FIG. 1 shows half of a blank according to the invention for erecting a box shown in FIG. 4. FIG. 2 is a diagrammatic perspective view of the box in an intermediate position upon its erection. FIG. 3 is a diagrammatic perspective view of a succeeding intermediate position upon the erection of the box, some portions of the box being broken away for the sake of clarity. FIG. 4 is a partial perspective view of the box when erected and with the lid tray somewhat raised from its closed position. FIG. 5 is a perspective view of the box when closed. FIG. 6 shows a modified blank for erecting a box according to the invention, and FIG. 7 shows still another blank slightly modified in relation to the blank shown in FIGS. 1 and 6.
For the sake of simplicity and to allow illustration on a greater scale FIG. 1 shows one half only of the blank because the other half is identically shaped. In a manner known per se the bottom tray of the box is formed by a bottom panel 1 and four associated side walls 2, 3, 4 and 5. The side walls 2, 3 have extensions at their ends in the form of end flaps 6. The side walls 4, 5 have extensions at their upper edges in the form of wing flaps 7 to be folded over the end flaps 6 about fold lines 8. Thereafter, the wing flaps are locked by gluing to the inside of the end walls 4-5.
Similar to the bottom tray, the lid of the box is formed 3,433,402 Patented Mar. 18, 1969 "ice by a lid tray comprising a rectangular lid panel 9 at the edges of which there are provided four side walls 10, 11, 12 and 13. The side walls 10, 11 have extensions in the form of end flaps 14. The .side walls 12, 13 have extensions at their longitudinal edges in the form of Wing flaps 15 which are articulated along fold lines 16 so as to be able to be folded over the end flaps and glued to the side walls 12.
To form the bottom tray as well as the lid tray the side walls 2, 3 and 10, 11, respectively, are erected and the end flaps are turned inwards to a position parallel with the adjacent side walls. Thereupon, the walls 4, 5 and 12, 13, respectively, are erected and their wings flaps are turned over the end flaps of the side walls.
One side wall 10 of the lid tray and the adjacent the wall 2 of the bottom tray are connected to each other by means of a hinge panel 17. This panel is bounded by two parallel fold lines 18, 19' and two transverse fold lines 20 which also form hinges for the end flaps 6. At its ends the hinge panel 17 has extensions in the form of lock flaps 21 which are integral with the adjacent end flaps 6. The fold line 19 has aligned extensions 22 which permit doubling over of the end portion formed by the end flaps 6 and the lock flap 2 From the position sh n in FIG. 2 in which the lid tray is erected the side walls 2, 3 of the bottom tray are erected and the hinge panel 17 is folded backwards and downwards into a position flat against the side wall 2 of the bottom tray. The doubled over end portions 6, 21 comprising the end flaps and the lock flaps are folded inwards at right angles into the position shown in FIG. 3. Thereafter, the side walls 4, 5 of the bottom tray are erected whereupon their wing flaps 7 are folded over the doubled over end portions 6, 21 and lock these portions in the erected position of the box as shown in FIG. 4. The wing flaps can be retained in a conventional manner by being glued to the adjacent side walls or by cooperation with slots in the bottom panel 1.
As will be seen from FIG. 4, the lid tray 9 is articulated to the lower edge 18 of the hinge panel 17 and can be easily moved to open or closed position by articulation about this edge.
If desired the hinged connection between the lid tray and the bottom tray may alternatively be provided at one of the end walls of the bottom tray.
In FIGS. 6 and 7 details identical with those shown in FIG. 1 are denoted by the same reference numerals. The three blanks are practically identical except for small variations. In FIG. 6 the side walls 3 and 11 have wing flaps 3a and 11a, respectively, and the end flaps 6 are somewhat tapered. Further, the lock flaps 21' have a shorter length than the lock flaps 21 in FIG. 1, and the fold line 22 is correspondingly shorter to facilitate the erection. In order to facilitate the folding of the doubled over end portion 6, 21' there is provided a slot 23 along the fold line 20. The slot 23 has about the same length as the width of the hinge panel 17 so that folding the end portion 6, 21' to the position shown in FIG. 3 for corresponding parts 6, 21, will be easier due to less material to be bent.
The blank shown in FIG. 7 differs from that in FIG. 6 basically as to the bottom tray which has relatively wide side walls 2, 3', 4, 5' in relation to the width of the side walls 10, 11, 12, 13 of the lid tray. The ends of the side walls of the bottom panel 1 are connected by intermediate end fiaps forming integral corner portions 6a, 6b which in a known manner are foldable along oblique fold lines 24 to form end portions which are secured by gluing to the inner side of the sidewalls 4' and 5'.
The erection of the blanks in FIGS. 6 and 7 is effected in the same way as described in connection with FIG. 1
except for the difierences indicated above. In all three embodiments the hinge panel 17 will be locked in its operative position when the lock flaps 21 and 21' respectively have been folded to the position shown in FIG. 3.
What I claim is:
1. A carton box erected from a single blank and comprising a bottom tray and a lid tray fitting over the side walls of the bottom tray and being hingedly connected with one of the side walls of the bottom tray by means of a hinge panel lying flat against said side wall of the bottom tray and connecting the upper edge of said side wall of the bottom tray with the lower edge of the adjacent side wall of the lid tray to form a hinge at the lower edge of the side wall of the lid tray, said side wall of the bottom tray being extended at its ends with end ilaps which are secured in a position along the adjacent side walls of the bottom tray, to lock the bottom tray in its erected position, characterized in that the hinge panel is extended at its ends with locking flaps integral with said end flaps and folded relative thereto along fold lines aligned with the fold line between the hinge panel and the adjacent side of the bottom tray.
2. A single carton blank for erecting a box comprising a bottom tray and a lid tray provided to fit over the side walls of the bottom tray when the box is erected, 0p 25 posite side walls of the bottom tray being extended with locking flaps provided to lock the side walls of the bot 4 tom tray in the erected position, one of the side walls of the bottom tray and the adjacent side wall of the lid tray being interconnected by means of a hinge panel hingedly connected at its parallel longitudinal edges with the upper edge of the adjacent side wall of the bottom tray and with the lower edge of the adjacent side wall of the lid tray, characterized in that the hinge panel and the adjacent side wall of the bottom tray are at each end extended with a common end portion which is divided by an extension of the fold line between the hinge flap and the adjacent side of the bottom tray.
References Cited UNITED STATES PATENTS 1,198,032 9/1916 Henze 229-44 X 2,094,448 9/ 1937 Evans 22933 2,206,304 7/1940 Ringler 22944 X 2,474,523 6/ 1949 Guyer 229-37 2,548,001 4/1951 Butterfill 299-33 X 2,752,032 6/1956 Fish 22937 X 2,939,576 6/1960 Flicker 2'29-33 X DAVIS T. MOORHEAD, Primary Examiner.
US. Cl. X.R.