U.S. patent number 3,889,868 [Application Number 05/406,692] was granted by the patent office on 1975-06-17 for mail handling container.
This patent grant is currently assigned to Liberty Carton Co.. Invention is credited to Arnold D. Bruckner, Marlyn D. Johnson.
United States Patent |
3,889,868 |
Bruckner , et al. |
June 17, 1975 |
Mail handling container
Abstract
A rectangular shaped container primarily adapted for handling
and sorting mail is provided with a hinged top cover comprised of a
plurality of foldable sections which may be folded together to
collapse the cover for compact storage when it is not being used.
Lock flaps on the opposite ends of the cover are inserted into the
rear end of pockets formed in the container end walls to hold the
cover in its collapsed, storage position; and these same lock flaps
are inserted in the front end of the end wall pockets to secure the
cover in place when it is swung forwardly over the top of the
container to a closed position.
Inventors: |
Bruckner; Arnold D. (Bowie,
MD), Johnson; Marlyn D. (Minneapolis, MN) |
Assignee: |
Liberty Carton Co.
(Minneapolis, MN)
|
Family
ID: |
23609076 |
Appl.
No.: |
05/406,692 |
Filed: |
October 15, 1973 |
Current U.S.
Class: |
229/125;
229/117.16; 229/164; 229/147; 229/151; 229/178 |
Current CPC
Class: |
B65D
5/22 (20130101); B65D 5/6661 (20130101) |
Current International
Class: |
B65D
5/66 (20060101); B65D 5/64 (20060101); B65D
5/20 (20060101); B65D 5/22 (20060101); B65d
005/22 () |
Field of
Search: |
;229/36,33,34
;206/45.2,45.21,45.24,45.28 |
References Cited
[Referenced By]
U.S. Patent Documents
Primary Examiner: Moorhead; Davis T.
Attorney, Agent or Firm: Williamson, Bains & Moore
Claims
What is claimed is:
1. A mail handling container formed from cut and scored bendable
material comprising:
a bottom wall;
a pair of opposed, upright, front and rear side walls extending
upwardly from fold line connections with the opposite longitudinal
edges of said bottom wall;
a pair of opposed, upright end walls extending upwardly from said
bottom wall at substantially right angles to said side walls and
cooperating therewith to form a substantially rectangular container
the top of which is defined by the upper edges of said side and end
walls, each of said end walls being comprised of a single panel
scored along a fold line to provide two end panel sections, one of
which is an upright panel section hingedly attached to one end of
said bottom wall and the other of which is folded downwardly and
inwardly over said one end panel section along said end panel fold
line to thereby form end walls of double wall thickness with said
end panel sections defining an open ended pocket therebetween, and
with said fold line defining the upper edge of said end walls;
a cover panel hingedly attached along one longitudinal edge thereof
to the top edge of said rear side wall and disposed in a downwardly
and forwardly folded closed position over said container top, said
cover panel comprising a plurality of foldable sections
interconnected with each other along fold lines extending parallel
to said longitudinal hinged edge of said cover panel, said cover
panel sections being foldable into a collapsed, downwardly and
rearwardly extending condition in overlying relation to said rear
side wall, whereby said cover panel may be opened, folded to said
collapsed condition and secured in said collapsed condition by
inserting said lock flaps into the rear end of said end wall
pockets;
a pair of lock flaps hingedly attached to the opposite ends of said
cover panel at the opposite, longitudinal free edge thereof and
tucked into the front end of said end wall pockets to hold said
cover panel in said closed position.
2. A mail handling container as defined in claim 1 wherein:
said front side wall is cut away over a substantial portion of the
length thereof with said portion having a top edge below the
adjacent top edges of said end walls to provide a front opening
which facilitates placing pieces of mail in said container with
said cover panel swung to an open position; and
said cover panel includes an outermost panel section hingedly
attached to said cover panel along a fold line extending parallel
to said hinged longitudinal edge thereof and positioned even with
the front edges of said end walls when said cover panel is closed,
said outermost panel section being disposed in a downwardly folded
position in overlying relation to the outside face of said front
side panel and said front opening and serving to close the front
side of said container with said cover panel in said closed
position; and
said lock flaps being hingedly attached to the ends of said
outermost panel section of said cover panel along fold lines which
are substantially coplaner with said end walls when said cover
panel is in said closed position.
3. A mail handling container as defined in claim 1 wherein:
each of said end walls includes a pair of flaps hingedly attached
to one end of said front side wall and said rear side wall
respectively along fold lines in alignment with said fold lines
between said end panel upright sections and said bottom wall, said
flaps being folded inwardly in upright positions and sandwiched
between said panel sections of said end walls.
4. A mail handling container as defined in claim 1 wherein:
the innermost one of said cover panel sections hingedly attached
along said longitudinal edge thereof to the top edge of said rear
side wall has a height dimension no greater than that of said rear
side wall.
5. A material handling container formed from a single blank of
fiberboard comprising:
a bottom wall;
a pair of opposed, front and rear side walls extending upwardly
from fold line connections with the opposite longitudinal edges of
said bottom wall;
a pair of opposed, upright end walls extending upwardly from said
bottom wall at substantially right angles to said side walls and
cooperating therewith to form a substantially rectangular
container, the top of which is defined by the upper edges of said
side and end walls, each of said end walls being comprised of a
single panel scored along a fold line to provide two end panel
sections, one of which is an upright panel section hingedly
attached to one end of said bottom wall and the other of which is
folded downwardly and inwardly over said one end panel section
along said fold line to thereby form end walls of double wall
thickness with said end panel sections defining an open ended
pocket therebetween and with said fold line defining the upper edge
of said end walls;
a cover panel hingedly attached along one longitudinal edge thereof
to the top edge of said rear side wall, said cover panel being
comprised of a plurality of foldable panel sections interconnected
along fold lines extending parallel to said hinged longitudinal
edge of said cover panel and folded together in a collapsed,
storage position in overlying, face-to-face relation to each other
rearwardly of said rear side panel; and
a pair of lock flaps hingedly attached to the opposite ends of said
cover panel along fold lines, said lock flaps being tucked into the
rear end of said end wall pockets and serving to hold said cover
panel in said storage position rearwardly of said rear side panel
to provide free access to said container through the open top
thereof for placing articles therein.
6. A material handling container as defined in claim 5 wherein:
said lock flaps are attached to the ends of the outermost one of
said cover panel sections along fold lines extending parallel to
said end panel fold lines; and
the innermost one of said cover panel sections hingedly attached to
the top edge of said rear side wall has a height dimension no
greater than that of said rear side wall and is in a downwardly
folded position in overlying relation to the outside face thereof
in abutting engagement therewith, with the other cover panel
sections folded tightly together with said innermost cover panel
section, whereby said cover panel is compactly positioned against
said rear side wall in said collapsed, storage position.
7. A material handling container as defined in claim 5 wherein:
said cover panel sections are alternately folded together in
opposite directions into abutting, face-to-face relation with each
other along said fold lines in an accordian type fold with said
cover panel in said collapsed position.
8. A material handling container as defined in claim 5 wherein:
said cover panel is swingable about said hinged longitudinal edge
thereof to a forwardly disposed, closed position over the top of
said container wherein it rests against the top edges of said end
walls, said cover panel being of sufficient width to fully cover
the top of said container when fully extended and swung forwardly,
and said lock flaps being inserted in the front ends of said end
wall pockets and serving to hold said cover panel in said closed
position.
Description
BRIEF SUMMARY OF THE INVENTION
This invention is directed to a mail handling container having a
closeable, hinged cover which may be collapsed and compactly stored
out of the way when mail is being placed into the container during
a mail sorting process in a post office, and which may be closed
and secured in place over the top of the container when the same
container is subsequently used for shipment of the mail placed
therein.
These basic objectives have been realized by forming an easily
assembled container from a single plank of fiberboard material cut
and scored in a predetermined manner to provide a hinged top cover
panel comprised of a plurality of foldable panel sections
interconnected along fold lines permitting the cover to be
collapsed to a compact storage position when it is not being used.
Lock flaps on opposite ends of a cover panel are utilized to secure
it in place in either its collapsed, storage position, or in its
fully extended, closed position.
A particularly advantageous feature of this invention resides in
the forming of the container to a rectangular shape with end walls
having two panel sections folded one over the other to provide a
double wall thickness which strengthens the container and defines
an open ended pocket between the two panel sections of each end
wall. Lock flaps hingedly attached to opposite ends of the
outermost one of the cover panel sections are tucked into the rear
end of the end wall pockets to hold the cover in its collapsed,
storage position. These same lock flaps are tucked into the front
end of the end wall pockets to secure the cover in a closed
position when it is extended over the top of the container.
A particularly compact storage position for the cover panel in its
collapsed condition is achieved by scoring and forming the cover
panel so that the innermost panel section of the cover which is
hingedly attached to the top edge of the rear side wall of the
container has a height dimension no greater than that of the rear
side wall. When the cover panel is collapsed, the innermost panel
thereof assumes a downwardly folded position in overlying relation
to the rear, outside face of the container rear wall in abutting
engagement therewith, with the other cover panel sections folded
tightly together with the innermost cover panel section. With the
aforesaid lock flaps tucked into the rear end of the end wall
pockets, the cover panel will be held in a very compact storage
position against the outside face of the rear wall of the container
where it will not interfere with the placing of mail into the
container during a sorting process.
These and other objects and advantages of this invention will
become readily apparent as the following description is read in
conjunction with the accompanying drawings wherein like reference
numerals have been used to designate like elements throughout the
several views.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a top, plan view of the fiberboard blank from which the
container of this invention is formed and assembled;
FIG. 2 is a front, perspective view of the container in a partially
assembled condition with one end wall in the process of
assembly;
FIGS. 3 through 5 are perspective views showing the container in
successive stages of assembly with the cover collapsed to its
storage position; and
FIG. 6 is a front, perspective view of the container with the cover
closed and being locked in place.
DESCRIPTION OF THE PREFERRED EMBODIMENT
Referring now to the drawings, there is shown in FIG. 1 a cut and
scored blank of fiberboard material from which the container of
this invention is formed. Although fiberboard has been found to be
a particularly strong and satisfactory material for the purpose of
making the mail handling container of this invention, it is to be
understood that other types of bendable material, such as sheet
metal may be used. The blank of fiberboard material is generally
designated by reference numeral 1, and is cut and scored as shown
to provide a bottom wall 2 and a pair of opposed end wall panels 4
and 6. Each of the end wall panels 4 and 6 is comprised of two
panel sections 4a, 4b and 6a, 6b respectively which are joined
together along their respective double score lines 5 and 7. The
bottom or innermost end wall panel sections 4b and 6b are hingedly
attached to the ends of bottom wall 2 along scored fold lines 8 and
10. Lock tabs 12 and 14 on the outside edges of end wall panel
sections 4a and 6a are utilized to hold the end wall assemblies in
place in their upright positions of FIGS. 2 and 3 by insertion
within complementary slots 16 and 18 in the ends of bottom wall 2.
Oval apertures 20a, 20b and 22a, 22b are formed in the end wall
panel sections 4a, 4b and 6a, 6b in alignment with each other to
provide hand holds through the end walls when the end panel
sections are folded over in the assembled condition of FIG. 2.
The front, side wall of the container is formed from a front side
panel generally indicated by reference numeral 24 which is
comprised of a pair of front panel sections 24a and 24b joined
together along a fold line 26. Front panel 24 may be folded to an
upright position to form the front wall of the container along its
hinged fold line connection 25 with bottom wall 2. Angled cuts 28a
and 28b are made in the opposite ends of front panel 24 for the
separation of panel 24a from panel 24b in such a manner along fold
line 26 that the inward and downward folding of panel 24a over
panel 24b will provide a front wall with an opening along its
central portion for a purpose hereinafter explained. Spaced apart
lock tabs 30 on the outer edge of front panel section 24a are
utilized to lock this panel section in place against bottom wall 2
by insertion within complementary bottom wall receiving slots
32.
Hingedly attached to the opposite ends of front panel 24 are a pair
of inwardly foldable flaps 34a and 34b which are utilized to form
part of the end wall structures as explained below. Fingers 36a and
36b of flaps 34a and 34b are cut so as to extend over the top of
and not obstruct the hand holds defined by end wall apertures 20a,
20b and 22a, 22b.
The remaining section of the fiberboard blank is a panel generally
designated by reference numeral 38 which is cut and scored to
provide a rear side wall 40 and a cover panel 44. Rear side panel
40 is hingedly attached to the rear, longitudinal edge of bottom
wall 2 along fold line 42. Cover panel 44 is divided into a
plurality of panel sections 44a, 44b and 48 which are
interconnected along scored fold lines 46 and 50 respectively.
Outermost cover panel section 48 serves as a closure panel over the
front end of the container in a manner hereinafter explained; and
innermost cover panel section 44b is hingedly attached along
longitudinal edge 45 thereof to the top or outer edge of rear side
panel 40.
A pair of lock flaps 52a and 52b are hingedly attached to the
opposite ends of outermost cover panel section 48 along fold lines
53a and 53b; and for a reason hereinafter explained, fold lines 53a
and 53b are parallel to end panel fold lines 5 and 7.
Hingedly attached to the opposite ends of rear wall panel 40 are a
second pair of inwardly foldable flaps 54a and 54b which combine
with flaps 34a and 34b respectively to provide an additional wall
thickness to the end wall assemblies. Flaps 54a and 54b have
notches 56a and 56b cut therein to extend around hand hold openings
20a, 20b and 22a, 22b of the end walls.
In the process of assembling the container from the cut and scored
blank shown in FIG. 1, panel 38 is first folded upwardly and
inwardly so that rear, side wall panel 40 will assume a generally
upright position as shown in FIG. 2. Front panel 24 is then folded
upwardly and inwardly to a generally upright position, with end
wall flaps 34a and 34b being folded inwardly at the same time at
right angles to front panel 24. Cooperating end wall flaps 56a and
56b are also folded inwardly to positions outside of their
corresponding flaps 36a and 36b as is illustrated in FIG. 2. With
the pair of end flaps 34a, 54a in upright positions across one end
of bottom wall 2, one end wall is completed by folding end wall
panel 4 upwardly and inwardly about its fold line 8 so that end
panel section 4b assumes an upright position. End panel section 4a
is then folded inwardly and downwardly over flaps 34a, 54a and is
locked in place by inserting its lock tabs 12 within slots 16 of
bottom wall 2. It will be appreciated that flaps 34a and 54a are
thus sandwiched between end wall panel sections 4a and 4b, the
utilization of flaps 34a and 54a as part of the end wall structure
being facilitated by the alignment of the fold line connections of
flaps 34a and 54a with their respective side wall panels 24 and 40
with fold line 8 between end wall panel section 4b and bottom wall
2. Panel sections 4a and 4b cooperate to provide an end wall of two
wall thicknesses and define therebetween an open ended pocket
within which flaps 34a and 54a are contained. Finger 36a of flap
34a and notch 56a in flap 54a extend over and around aligned slots
20a, 20b so as to provide an unobstructed hand hold extending
through the end wall.
The opposite end wall is then formed in the same manner by folding
cooperating flaps 34b and 54b inwardly to upright positions along
fold line 10 and then folding end wall panel section 6a upwardly
and inwardly over panel section 6b and locking it in place within
bottom wall slots 18. Panel section 6a will cooperate in a similar
manner with upright panel section 6b to define an open ended pocket
within which end wall flaps 34b and 54b are contained.
Next, panel section 24a of the front panel 24 is folded inwardly
and downwardly over its cooperating panel section 24b and locked in
place by inserting its lock tabs 30 within cooperating slots 32
provided along the front edge of bottom wall 2. The completion of
this step is shown in FIG. 3. The upright side walls 24 and 40
cooperate with opposed, upright end walls 4 and 6 to form a
generally rectangular container, the top of which is defined by the
upper edges of the side and end walls. It is to be noted that end
wall fold lines 5 and 7 define the upper edges of the end walls. In
a like manner, fold line 26 defines the upper edge of front wall
24. With front panel section 24a cut along angles 28a and 28b and
folded inwardly and downwardly as shown, the top edge 26 of front
panel 24 will be below the adjacent top edges 5 and 7 of the end
walls to provide a front opening or recess along a substantial
portion of the length of the front wall. This cut-away or recessed
portion of front wall 24 clearly shown in FIG. 5 facilitates the
placing of pieces of mail in the container with its cover panel 44
open.
To facilitate the loading of the container with mail through its
open top, cover panel 44 is collapsed by folding it in accordian
fashion along fold lines 45, 46 and 50. As is indicated in FIGS. 3
and 4, these cover panel sections are sequentially folded together
in opposite directions in abutting, face-to-face relation with each
other along fold lines 45, 46 and 50, with innermost panel section
44b first being folded downwardly and rearwardly. Panel section 44a
is then folded upwardly over panel section 44b along fold line 46,
and outermost panel section 48 is then folded inwardly and
downwardly over panel section 44a along fold line 50. The entire
cover panel 44 will thus be disposed rearwardly of container rear
wall 40 in the manner shown in FIG. 4. In order to secure cover
panel 44 in its collapsed, storage condition, lock flaps 52a and
52b are folded inwardly to upright positions about their fold line
connections with outermost panel section 48 along fold line 53a and
53b to the positions shown in FIG. 4. Lock flaps 52a and 52b are
then tucked into the open, rear ends of the pockets formed between
end wall panel sections 4a, 4b and 6a, 6b as illustrated in FIGS. 4
and 5. When this operation has been completed, cover panel 44 will
be secured in a very compact storage position as illustrated in
FIG. 5 with each of its panel sections 44a, 44b and 48 disposed in
face-to-face, overlying relation to each other against the rear
face of container rear wall 40. The compact folding and storage of
cover panel 44 in this manner is greatly facilitated by scoring
fold lines 46 and 50 so that they extend parallel to fold line 45
along which the entire cover panel 44 is hingedly attached to rear
wall 40 along its innermost longitudinal edge.
It will be appreciated that with cover panel 44 stored in the
aforesaid, collapsed condition as shown in FIG. 5 it will be held
securely out of the way so as to provide free, unobstructed access
to the interior of the container through its open top end and
through the cut-away opening in front wall 24. During a mail
sorting process, mail of the same zip code is placed in separate,
open containers with the open, cover panel secured in its
collapsed, storage position as shown In FIG. 5. it will be
appreciated that the insertion of lock flaps 52a and 52b into the
open rear end of the end wall pocket is facilitated by making the
fold lines 53a and 53b of these lock flaps parallel to end wall
fold lines 8 and 10. Also, the panel sections 44a, 44b and 48 of
cover panel 44 are cut and scored so that innermost cover panel
section 44b will have a height dimension which is no greater than
that of container rear wall 40. This ensures the compact
positioning of the cover panel 44 against the outside face of rear
container panel 40 when the cover panel 44 is collapsed to its
storage position.
After the containers are filled with mail, they are closed and
shipped to predetermined destinations, primarily by air transport,
for the distribution of the mail contained therein. For this
purpose, lock flaps 52a and 52b are removed from the rear end of
the end wall pockets, and cover panel 44 is swung upwardly and
inwardly over the top of the container about its longitudinal hinge
line connection 45 with container rear wall panel 40. With cover
panel 44 lying against the top edges of the container end walls in
its closed position as shown in FIG. 6, the fold line connection 50
between outermost cover panel section 48 and section 44a will be
positioned even with the front edges of the end walls 4 and 6. This
permits outermost panel section 48 to be folded downwardly in
overlying relation to the outside of container front wall 24. Lock
flaps 52a and 52b are again folded inwardly along fold line 53a and
53b to upright positions coplaner with the end walls as shown in
FIG. 6; and the lock flaps 52a and 52b are then tucked into the
open front ends of the end walls to secure the cover panel 44 in
its closed position. It will be appreciated that with cover panel
44 closed in the aforesaid manner, outermost panel section 48 will
serve as a closure panel in overlying relation to the cut-away
opening extending across the container front wall 24.
After the closed container reaches its destination, cover panel 44
is very simply opened by simply pulling closure panel section 48
upwardly and outwardly to remove lock flaps 52a and 52b from the
end wall pockets, and then folding the entire cover panel upwardly
and rearwardly about fold line 45 to the position shown in FIG. 3.
Cover panel 44 is then collapsed and stored against the outside
face of container rear panel 40 in the manner described above for
use in a subsequent sorting and loading operation.
It is anticipated that various changes may be made in the size,
shape and construction of the mail handling container as disclosed
herein without departing from the spirit and scope of this
invention as defined by the following claims.
* * * * *