U.S. patent number 3,871,569 [Application Number 05/367,776] was granted by the patent office on 1975-03-18 for divider for a container.
This patent grant is currently assigned to Kinetics Container Corporation. Invention is credited to Paul B. Wharton, Jr..
United States Patent |
3,871,569 |
Wharton, Jr. |
March 18, 1975 |
DIVIDER FOR A CONTAINER
Abstract
A divider for use in containers and a blank from which the same
may be formed. An elongated, generally rectangular sheet of
corrugated material includes a central section intermediate its
ends with first and second end sections joined to the central
section at opposite sides thereof. The central section includes at
least one notch and each of the end sections includes at least one
hook formation directed outwardly from the associated ends of the
sheet and are separated from the central section by a fold line.
Each of the end sections includes at least two fold lines
intermediate its ends upon which each end section can be folded so
that each hook formation may be received in the notch to define at
least two compartments of generally quadrilateral cross section.
The divider may then be inserted in a container such as a
corrugated carton.
Inventors: |
Wharton, Jr.; Paul B.
(Deerfield, IL) |
Assignee: |
Kinetics Container Corporation
(Des Plaines, IL)
|
Family
ID: |
23448549 |
Appl.
No.: |
05/367,776 |
Filed: |
June 7, 1973 |
Current U.S.
Class: |
229/120.29;
229/120.37 |
Current CPC
Class: |
B65D
5/48028 (20130101) |
Current International
Class: |
B65D
5/49 (20060101); B65D 5/48 (20060101); B65d
003/00 () |
Field of
Search: |
;229/42,28R,15,29B,29C,29D,29E |
References Cited
[Referenced By]
U.S. Patent Documents
Primary Examiner: McCarthy; Edward J.
Attorney, Agent or Firm: Hofgren, Wegner, Allen, Stellman
& McCord
Claims
I claim:
1. A blank for forming a divider in a container comprising: an
elongated, generally rectangular sheet of flexible material, said
sheet including a central section intermediate its ends, said
central section including a line of weakening extending in the
direction of elongation of said sheet and located along
substantially the midpoint of said sheet, first and second end
sections joined to said central section at opposite sides thereof,
each of said end sections being divided into two portions by a slit
extending from the associated end of said sheet inwardly to said
central section, said slits meeting said line of weakening at
respective ends thereof, said central section further including at
least three notches, two of said notches being located in the side
edges of said sheet in said central section and extending inwardly
thereinto, the third of said notches straddling said line of
weakening, each portion of each of said end sections including a
hook formation directed outwardly from the associated end of said
sheet, one of the hooked portions of each end section being located
on one portion thereof adjacent the junction of an edge of said
sheet and an end of said sheet, the other hooked portion of each
end section being located on the other portion adjacent the
junction of the end of said sheet and said slit, and a plurality of
recesses, one for each hooked portion located on the associated
portion of each end section opposite from the location of said
hooked portion.
2. A blank according to claim 1 wherein each said end section is
separated from said central section by a fold line and further
includes at least two fold lines interposed between said
first-mentioned fold line and the associated end of said sheet.
3. A blank according to claim 2 wherein there are a total of three
said notches, said notches being located centrally relative to the
ends of said sheet.
4. The blank of claim 3 wherein said sheet is formed of corrugated
board and said line of weakening comprises a score line.
5. A divider including a blank according to claim 2 wherein said
central section is folded upon itself on said line of weakening and
each said end portion is folded about one each of said three fold
lines and said hooked portions are receiving in aligned ones of
said notches and said recesses.
6. A container including an upwardly open cavity, and a divider
according to claim 5 being snugly received in said cavity.
7. A blank for forming a divider in a container comprising: an
elongated, generally rectangular sheet of flexible material, said
sheet including a central section intermediate its ends, first and
second end sections joined to said central section at opposite
sides thereof, said central section further including at least one
notch, each of said end sections including at least one projecting
formation directed outwardly from the associated end of said sheet,
each end section being separated from said central section by a
fold line and further including at least two fold lines
intermediate its ends upon which each end section may be folded so
that each projecting formation may be received in said notch; an
additional one of said central section and additional ones of said
first and second end sections, said two central sections being
joined together by a line of weakening in said sheet, said
respective first and second end sections being separated from each
other by a centrally located slit extending to said line of
weakening at opposite ends thereof.
Description
BACKGROUND OF THE INVENTION
This invention relates to dividers for insertion into containers
such as corrugated boxes for subdividing the interior thereof into
a plurality of compartments, each for receipt of articles, and for
strengthening the resultant container so that the same may
satisfactorily resist compressive forces when stacked.
Recent years have seen a sizable increase in the use of relatively
thin-walled plastic containers for packaging a variety of
materials, most notably fluids. For shipping purposes, a plurality
of such thin-walled plastic containers are placed in a further
container as, for example, a box formed of corrugated
paperboard.
Where the plastic containers contain relatively dense material as,
for example, liquids, when a plurality of the cardboard cartons in
which they are stored are stacked, as will usually be the case
during transportation or storage, sizable compressive forces are
placed on the lowermost cardboard containers in the stack.
Whereas a variety of other types of smaller containers in the
cardboard box strengthen the same to resist such compressive
forces, the thin-walled plastic containers do not provide such
compression resistance and, in fact, are such that partial collapse
of the cardboard container due to such compressive forces may cause
rupturing of the plastic containers therein.
As a result, it is necessary to strengthen the cardboard container
so that the same may successfully resist large compressive forces
when stacked with other containers containing like goods.
Frequently, increased resistance can be obtained through the use of
dividers which are placed in a cardboard container and
compartmentalize the same with each compartment receiving a
container of the goods to be transported. Most such dividers,
however, do not provide sufficient protection where thin-walled
plastic containers are received in the compartments and/or are
difficult and time-consuming to fabricate.
SUMMARY OF THE INVENTION
It is the principal object of the invention to provide a new and
improved divider for use in connection with cardboard containers to
increase the resistance of a package to compression forces when
stacked to thereby preclude damage to goods contained therein. More
specifically, it is an object of the invention to provide such a
divider and a blank for forming the same which is easily fabricated
so as to minimize the expense required in employing the same.
The exemplary embodiment of the invention achieves the foregoing
objects in a structure including an elongated, generally
rectangular sheet of flexible material such as corrugated
cardboard. The sheet is provided with a central section
intermediate its ends which includes a line of weakening centrally
located in the direction of elongation of the sheet. First and
second end sections are joined to the central section at opposite
sides thereof and each end section is divided into two portions by
a slit extending from the associated end of the sheet inwardly to
the central section and joining with the line of weakening in the
central section. The end sections are delimited from the central
section by fold lines and each end section in turn includes a pair
of fold lines. All such fold lines run transverse to the direction
of elongation of the sheet from which the blank is formed.
The central section is provided with at least three notches while
the end sections are provided with hook formations. By folding the
blank, first along the line of weakening in the central section and
then along respective ones of the fold lines, a four-compartment
divider may be fabricated by securing the hook formations of the
end sections in the notches in the central sections.
The resulting divider will include a central, cross formation of
double thickness so that when placed in a carboard carton,
substantial compression resistance is provided intermediate the
walls of the cardboard carton. In addition, the divider will
provide a single layer thickness adjacent the walls of the
cardboard carton which, together with the walls thereof, provides a
double layer thickness so that the periphery of the carton is
provided with improved compression resistance.
When used in a cardboard carton, the divider is ideally suited for
housing thin-walled plastic containers and protecting the same from
damage when stacked during transportation or storage.
Other objects and advantages of the invention will become apparent
from the following specification taken in connection with the
accompanying drawings .
DESCRIPTION OF THE DRAWINGS
FIG. 1 is a plan view of a blank used in forming a divider made
according to the invention;
FIG. 2 is a perspective view of the blank partially assembled to
form a divider;
FIG. 3 is a perspective view of a cardboard container having a
divider made according to the invention located therein;
FIG. 4 is a sectional view taken approximately along the line 4--4
of FIG. 3; and
FIG. 5 is a sectional view taken approximately along the line 5--5
of FIG. 1.
DESCRIPTION OF THE PREFERRED EMBODIMENT
An exemplary embodiment of a blank made according to the invention
employed in fabricating a divider made according to the invention
is illustrated in FIG. 1 and is seen to include an elongated,
generally rectangular sheet of flexible material, generally
designated 10, preferably of corrugated paperboard or the like.
According to a much preferred embodiment of the invention, double
corrugated board formed of opposed outer layers 12, a central layer
14 and two corrugated layers 16, as illustrated in FIG. 5, is
employed.
The sheet 10 includes a central section, generally designated 18,
flanked by two end sections, each generally designated 20. The end
sections 20 are delimited by the respective ends of the sheets 18
and by fold lines 22.
The central section includes a central line of weakening 24
extending between the fold lines 22 in a direction parallel to the
direction of elongation of the sheet 10. In a preferred form of the
invention, the line of weakening 24 is provided by a scoring of the
sheet 10 which extends partially through the same.
Centrally located within the central section 18 are three notches.
A first notch is designated 26 and is centrally located on the line
of weakening 24 to extend to both sides thereof. The remaining two
notches are each designated 28 and are located to extend inwardly
from the sides of the sheet 10. The notch 26 has a length about
twice that of each of the notches 28.
The length of each of the notches 28 is related to hook-like
securing means, each designated 30, located on the ends of the
sheet 10, each including a narrow neck 32 having a dimension
approximately corresponding to the length of each of the notches
28. Thus, the notch 26 has a length equal to about twice the
dimension of the narrowed necks 32 of the hook-like securing means
30. The width of the notches 26 and 28 is twice the thickness of
the sheet 10.
The hook-like securing means are located such that two extend from
the upper edge of the sheet 10 as seen in FIG. 1, while two are
located intermediate the top and bottom edges thereof with their
upper surfaces aligned with the line of weakening 24. That is, the
lower ones of the hook-like securing means 30 on opposite ends of
the sheet extend downwardly from the center line of the sheet
10.
Each of the end sections 20 is divided into two end portions 34.
The end portions 34 are separated from each other by a slit
extending along the center line of the sheet 10 in the direction of
elongation thereof and meeting the line of weakening 24 at the
central section 18.
Each of the end portions 34 include an inwardly directed recess 38
adjacent its lowermost and outermost end. The recesses 38 have a
dimension corresponding to that of the hook-like end of each hook
portion 30. That is, they have the same shape as the hook less the
narrowed portion 32.
Finally, each of the end sections 20 is provided with fold lines 40
and 42 extending transverse to the direction of elongation of the
sheet 10 and parallel to the fold line 22.
With reference now to FIG. 2, the manner of assembling a divider
made according to the invention from the blank is illustrated.
Specifically, the blank is folded along the line of weakening 24 so
that the respective sides of the center portion 18 are doubled upon
each other. As a result of the foregoing, the notches 28 are
aligned while the notch 26 has its effective length halved as
illustrated in FIG. 2. Each of the end portions 34 is then folded
in the manner illustrated in FIG. 2 so that the hook-like securing
means 30 on opposite ends of the sheet are brought together to be
received together in the notches 26 and 28. That portion of each
hook-like securing means 30 that extends across the center portion
is received in the aligned recesses 38 to form an aligned structure
with no tabs or the like displaced from the plane of the various
divider walls.
As can be seen in FIG. 4, when a double layered corrugated board
such as illustrated in FIG. 5 is employed in forming the divider,
the central section 18 of the divider will have a thickness of four
corrugated layers. It will also be appreciated that since portions
of the end sections 20 are brought into abutment with each other,
as each include a double layer, each of the central walls of the
divider will have a thickness of four layers. As illustrated in
FIG. 3, such walls are designated 46 and 48 and define a cross like
configuration providing four compartments 50 for receipt of
containers of smaller size as, for example, a thin-walled plastic
container 52.
It will also be recognized that when the resulting divider
structure is put into a corrugated box such as the box generally
designated 54 in FIG. 3, double layered walls 56 will abut the side
walls of the box 54. As a result of the foregoing, substantial
compressive strength is provided with the result that several of
the resulting cartons can be stacked without fear of compressive
forces partially collapsing one of the containers to rupture a
container held therein.
Finally, it will be recognized that while the exemplary embodiment
has been described in connection with a divider that forms four
compartments, a greater or lesser number of compartments may be
provided. For example, by severing the blank along the line of
weakening 24, a divider can be formed which will provide two
compartments if both of the remaining end sections are folded
towards each other as shown in FIG. 2, or may be used to provide a
four-compartment divider having lesser resistance to compressive
strength if one of the end sections is brought towards one side of
the blank and the other is folded towards the opposite side of the
blank. It will also be recognized that by increasing the width of
the central section 18 and providing additional notches
corresponding to the notches 26 and 28, six or more compartments
may be obtained by utilizing a space that would result between the
endmost flaps of adjacent end sections as a further
compartment.
It will be recognized that each of the compartments need not be
square but, rather, can be formed to have virtually any desired
polygonal shape although normally, the shape will be
rectangular.
In addition, where automated folding equipment is employed to
assemble the blank into the divider, the hook formations 30 may be
replaced with simple tabs. In such instances, the folding equipment
will hold the tabs in the notches sufficiently long to allow the
divider to be inserted into a container at which time, the
container itself will take over to hold the divider in the proper
shape. Because the various walls of the divider are positively
interlocked either with the hooks or by tabs once the divider is
located in a container, it will be appreciated that the invention
allows a more efficient packing operation. In various prior art
constructions wall flaps of the divider are free on one or more
ends and many bend into the compartment to be divided thereby. When
such occurs, the article to be packaged cannot be inserted into the
compartment since the divider will obstruct free passage of the
same thereinto. This problem is totally eliminated by a divider
made according to the invention.
* * * * *