U.S. patent number 3,645,382 [Application Number 05/079,129] was granted by the patent office on 1972-02-29 for box structure convertible into an easel.
This patent grant is currently assigned to Union Camp Corporation. Invention is credited to Andrew M. Abrams.
United States Patent |
3,645,382 |
Abrams |
February 29, 1972 |
BOX STRUCTURE CONVERTIBLE INTO AN EASEL
Abstract
The invention comprises a box in which educational blocks,
puzzles, artist material or the like, may be packaged. The box is
formed of two nearly symmetrical open halves folded along a center
score line in the flat blank from which the box halves are formed.
Additional score lines parallel to the fold score line provide
hinge lines whereby the two open halves may telescope, to thereby
utilize one half as a cover for the other half, or both halves may
abut at their open faces to provide a box of maximum volume. The
halves may be folded back to a position, wherein an easel or
display structure is formed. Securing means are provided to secure
the two halves in the easel-forming position. A preferred form of
securing means comprises slots in the easel surfaces of the box and
a plastic flexible member having rigid transverse rod members at
the ends, the rods being dimensioned to fit through the slots, and
upon a 90.degree. rotation to engage the easel surfaces and prevent
collapse of the same.
Inventors: |
Abrams; Andrew M. (Spring
Valley, NY) |
Assignee: |
Union Camp Corporation (Wayne,
NJ)
|
Family
ID: |
22148617 |
Appl.
No.: |
05/079,129 |
Filed: |
October 8, 1970 |
Current U.S.
Class: |
206/45.21;
229/117.15; 229/144; 229/120.09; 229/146 |
Current CPC
Class: |
B65D
5/18 (20130101); B65D 85/1063 (20130101) |
Current International
Class: |
B65D
5/00 (20060101); B65D 5/18 (20060101); B65D
85/08 (20060101); B65D 85/10 (20060101); B65d
005/52 () |
Field of
Search: |
;206/45.21,45.24-45.27
;229/33,36,52B,16D |
References Cited
[Referenced By]
U.S. Patent Documents
Foreign Patent Documents
Primary Examiner: Leclair; Joseph R.
Assistant Examiner: Lipman; Steven E.
Claims
What is claimed is:
1. A convertible box comprising two open box formations secured to
each other along a fold line, each box formation comprising a panel
and two sides and an end secured thereto, said end being remote
from the fold line, each panel having score lines parallel to said
fold line, said score lines defining a connecting portion opposite
the end and a handle portion between said fold line and said
connecting portion, a handhold opening formed in each handle
portion, said handhold openings being aligned for coincidence when
the handle portions are folded along said fold line and secured to
form a common handhold, said box formations being foldable along
the score lines between the connecting and handle portions in a
first direction to positions wherein one box formation variably
telescopes within the other box formation, and foldable in an
opposite direction wherein the panels are brought back-to-back to
form an easel structure in which a panel forms a work surface and
the end forms the support surface.
2. A convertible box as claimed in claim 1, wherein the box
formations are formed from a single flat sheet with the fold line
being in the center of the sheet and the box formations being
substantially identical.
3. A convertible box as claimed in claim 2, wherein the sheet is
formed with score lines to provide folding portions, each portion
connecting the inner edge of a side to the adjacent edge of a
connecting portion in all positions of the connecting means
relative to the sides.
4. A convertible box as claimed in claim 3, wherein each folding
portion is formed by a score line transverse a side and a score
line extending across the connecting portion adjacent said side,
each folding portion having a diagonal score line to permit the
infolding of the folding portion to thereby form a movable closure
means between an end of a side and the end of its adjacent
connecting means.
5. A convertible box as claimed in claim 1, wherein securing means
are provided to maintain the box formations in their easel
position.
6. A convertible box as claimed in claim 5, wherein said securing
means comprise a slot formation in each panel and a flexible member
having rigid elements at each end, each element dimensioned to pass
through its slot formation in one position and be held in the slot
by rotation to another position.
7. A convertible box as claimed in claim 5, wherein one slot
formation is of cruciform shape.
8. A flat blank to be erected into a box which can be converted
into an easel comprising a flat sheet having: a first horizontal
score line intermediate the horizontal edges of said blank to act
as a fold line; spaced second, third and fourth horizontal score
lines above and parallel to said first score line; spaced fifth,
sixth and seventh horizontal score lines below and parallel to said
first score line; and vertical score lines extending from said
second and fifth score lines to the horizontal edges of the sheet,
said sheet having cutouts extending from the vertical score lines
between the second and fifth horizontal score lines to the
corresponding vertical edges of the sheet; said sheet being further
provided with slots in alignment with the ends of the fourth and
seventh score lines and extending from the vertical score lines to
the vertical edges, and with diagonal score lines extending from
the intersections of the vertical score lines with the third and
sixth horizontal score lines toward the cutouts; said sheet further
having aligned handhold openings intersecting the second and fifth
horizontal score lines substantially at their center portions.
9. A flat blank as claimed in claim 8, wherein said first score
line is substantially at the center of the sheet and the score
lines are substantially symmetrically located relatively
thereto.
10. A flat blank as claimed in claim 8, wherein a slot is formed in
the sheet between the third and the fourth and between the sixth
and seventh horizontal score lines and within the vertical score
lines.
11. A flat blank as claimed in claim 8, wherein a flap supported by
a double score line is formed in the sheet within a handhold
opening.
Description
This invention relates to boxes for packaging and storing
merchandise and which may be converted to an easel of similar
structure.
An object of this invention is to provide a box comprising two open
box formations made from a single blank and folded along a score
line in the blank whereby the two box formations may be brought
face to form a completely closed box variable volume. The blank is
provided with handhold openings cut symmetrically adjacent the fold
line, whereby a handle formation is formed when the box formations
are folded toward each other to form a closed box.
Another object is to provide a box arrangement as set forth above,
but convertible to an easel structure when the box formations are
folded backwardly along certain score lines to form an easel.
A further object is to provide easily applied securing means to the
box formations to maintain the box formations in their
easel-forming position. Further, the same securing arrangement may
be applied to the box formations to maintain them in the position
wherein they form the closed box.
Further objects and advantages will be apparent from the following
description and accompanying drawings, wherein:
FIG. 1 is a top view of the flat blank,
FIG. 2 is a perspective front view of the erected box with the box
halves illustrated in the telescopic position;
FIG. 3 is a perspective top view of the erected box in an open
position, with the upper half serving as a cover;
FIG. 4 is a perspective view of the erected box illustrated in the
position wherein it is converted to an easel;
FIG. 5 is a perspective front view of the erected box wherein it is
in the position of maximum volume;
FIG. 6 is a perspective view of the box wherein both halves are
filled and the box is fully open; and
FIG. 7 is a perspective view of the securing means for holding the
box in its easel formation and for holding the box in its easel
formation and for holding the box closed when it is fully
expanded.
Referring to FIG. 1, blank 1 comprises a flat sheet of paper broad
of suitable weight and finish. The blank is provided with a score
line 2 which acts as a fold line for the two halves of the box.
Score line 2 divides the blank into two almost symmetrical halves.
One half may be somewhat larger so that it acts as the cover into
which the smaller half telescopes when such closure is desired.
Parallel to score line 2, other score lines 3, 4 and 6 are provided
in the upper part o the blank. Midway of score line 3, a handhold
opening 7 is formed. Similar score lines 8, 9 and 10 are provided
for the bottom part of the blank, with handhold opening 12 provided
in score line 8. Vertical score lines 13, 14, 15 and 16 extend from
the score lines 3 and 8 outwardly to the edges of the blank, and
defined sides 18, 19, 20 and 21, respectively, with the
corresponding outer vertical edges of the blank.
Slots 22 are formed in the sides in alignment with score lines 6
and 10, the slots defining end flaps 23 for sides 18 and 19 an end
flaps 24 for sides 20 and 21.
Portions of the blank are cut to provide a space between the inner
ends of sides 18 and 20 and of sides 19 and 21, at the spaced being
bounded by the extensions of score lines 3, 8, 13, and 15, and 3,
8, 14 and 16. As illustrated in FIG. 1, score lines 4 and 9 extend
across the sides to define with the inner end of vertical score
lines 13, 14, 15 and 16 folding portions 25. The vertical edges 26
and the horizontal edges 27 of portions 25 are inwardly angularly
inclined whereby a portion 25 assumes a trapezoidal shaped. A score
line 29 runs through each portion 25, the score line extending from
the intersection of the score lines defining the portions to the
apex formed by edges 26 and 27.
The configuration of the space in the blank between t he adjacent
folding portions 25 and along edges 26 may be die cut with a single
die or formed in any conventional manner well known in the art.
Score lines 6 and 10 define with the horizontal outre edges of the
blank edges 30 and 31, respectively. Score lines 4, 6, 13 and 14
define a box and easel panel 33 and score lines 9, 10, 15 and 16
define a second box an easel panel 34.
To erect the box, the blank is folded in selected directions along
horizontal score lines 2, 3, 4, 6, 8, 9 and 10 and along vertical
score lines 13, 14, 15 and 16. Then the sides and ends are brought
to the position wherein they are perpendicular to panels 33 and 4
and form open box formations. Flaps 23 and 24 are folded at right
angles to their respective ends and secured to their adjacent sides
by any conventional manner, such as by adhesive bonding to
stapling. Preferably the flaps are located within the box
formations as illustrated in FIGS. 3 and 4.
Thereafter blank 1 is folded along score line 2 and along hinge
lines 2 and 8. This action brings cutouts 7 and 12 into alignment
to form a handhold; portions 39 and 40 being brought together and
secured by gluing, stapling or of the means to form a double
thickness for the handle means, as illustrated in FIGS. 2 and
5.
After the sides are erected or after the handle means are folded,
portions 25 may be folded inwardly along score lines 29. This
action brings portions 36 and 37 of he blank to an angular position
with respect to panels 33 ad 34 and with respect to handle portions
39 and 40, as illustrated in FIGS. 2 and 5. Portions 36 and 37 act
as hinged connecting means to join panels 33 and 34 to handle
portions 39 and 40.
The box is primarily used to package such items as educational
blocks, puzzles, art supplies and similar type merchandise which
require working and storage space and an easel-type working
surface. In view of fold line 2 and hinge lines 3 and 8, the box
may be converted to an easel, as illustrated in FIG. 4. The box
when functioning as a container or package means contains the
merchandise, which is illustrated as blocks of varying unit lengths
of to represent numbers, a illustrated in GIGS. 3 and 6. One half
of the box ma serve as a cover. The cover may comprise panel 33 and
its sides 18 and 19 and end 30, which are so dimensioned that they
form an open box formation which telescopes over and covers the
other half or box formation, comprising pane 34 and its sides an
cover. The closed condition to the box is shown in FIG. 3.
To convert the box into an easel, the halves of the box are folded
back along hinge lines 3 and 8 into the easel configuration
illustrated fIG. 4. To retain and secure the parts in the easel
position, the following securing means is utilized. A cruciform
slot 42 is provided in panel 34 and a straight slot 43 is provided
in panel 33. Although slot 43 is shown as a straight slot, it may
have the cruciform shape of slot 42. A flexible securing means
comprising a flexible cordlike member 45 and two end rods 46 is
utilized to retain the box in its easel configuration. Means 45 and
46 may be made of suitable plastic. The rods 46 are dimensioned to
enter and pass through slots 42 and 43. The securing means 45-46
may be placed in their easel maintaining position by rotating it so
that one rod is at right angles to slot 43 and then positioning the
part of cord 45 adjacent the other rod within end of an arm of the
cruciform slot, as illustrated in FIG. 4. If desired, both slots
may be straight slots and both rods would be passed therethrough
and then turned 90.degree. to hold the rods in easel-securing
positions.
After the easel is erected, one part, represented by panel 34, may
be the working surface on which the blocks are organized and
manipulated to carry out the educational procedure, such as, to add
numbers or spell words. End 31 serves as a support for the blocks.
It will be understood that the box when the so erected may serve as
a display surface. The other or back portion of the easel may be
used for the same purposes or as a storage place for the blocks or
other material to be used.
At times, ti may be desirable to use the full or maximum capacity
of the box. This condition is illustrated in FIGS. 5 and 6. FIG. 6
shows the box open and both halves or box formations filled with
educational blocks. FIG. 5 illustrates the box closed with the
double layer of blocks therein. It should be noted that in FIG. 5,
the box halves or box formations do not telescope, as in FIG. 2,
but their open faces are in abutting relationship along the edges.
Folding portions 25 are more fully folded inwardly in FIG. 5, it is
preferably to secure the flexible core 45 to slots 42 a 43 and run
it outside and along the bottom of the box. The core will hold the
box halves closed and may also serve as an optional handle
means.
If desired, handhold 12 may be formed with a flap 48 supported
along a double score line 49. Thus, flap 48 may be folded along
score line 49, inserted through handhold openings 12 and 7, an then
folded against the surface of portion 39 above opening 7 to provide
a smooth handle surface covering the rough edges of the openings 12
and 7 in portions 39 and 40, when the box is closed, as illustrated
in FIGS. 2 and 5.
While a preferred embodiment of the invention has been disclosed
for purposes of illustration, it will be evident that various
changes and modifications may be made therein without departing
from the scope and spirit of the invention.
* * * * *