U.S. patent number 3,713,530 [Application Number 05/109,273] was granted by the patent office on 1973-01-30 for display carton with dust flap locking construction.
Invention is credited to Jimmy J. Hanko.
United States Patent |
3,713,530 |
Hanko |
January 30, 1973 |
DISPLAY CARTON WITH DUST FLAP LOCKING CONSTRUCTION
Abstract
A display carton has article holding panels at each end, and
open front panels to allow access to the article. The front panels
may extend behind the article, and also maintain certain holding
panels in place. The unsupported front edges of the side walls are
prevented from bowing outwardly by locking the dust flaps together.
The dust flaps overlap. A locking tab on a first dust flap is
folded back around the second dust flap, and an outwardly extending
detent on the second dust flap prevents the tab from slipping off
the second flap.
Inventors: |
Hanko; Jimmy J. (Des Plaines,
IL) |
Family
ID: |
22326782 |
Appl.
No.: |
05/109,273 |
Filed: |
January 25, 1971 |
Current U.S.
Class: |
206/783 |
Current CPC
Class: |
B65D
5/5009 (20130101) |
Current International
Class: |
B65D
5/50 (20060101); B05d 005/50 () |
Field of
Search: |
;229/37E,16D
;206/45.14,45.31 |
References Cited
[Referenced By]
U.S. Patent Documents
Foreign Patent Documents
|
|
|
|
|
|
|
731,266 |
|
Jun 1955 |
|
GB |
|
1,091,029 |
|
Oct 1959 |
|
FR |
|
Primary Examiner: Leclair; Joseph R.
Assistant Examiner: Caskie; John M.
Claims
What is claimed is:
1. In a display carton having a front wall which is open for the
display of an article and adjacent side walls having front corners
which may bow outwardly, means for preventing such bowing
comprising
dust flaps hingedly attached to each of said side panels and
overlapping centrally of the carton,
the front edge of each of said dust flaps being undercut,
one of said dust flaps having a tab extending toward said front
wall on its outer free end, said tab being folded back around the
other of said dust flaps,
said other dust flap having a detent extending toward said front
wall on its outer free end preventing said tab from sliding from
said other flap.
2. The carton of claim 1 in which said detent does not extend
forwardly of said front panel.
3. A carton of claim 2 having a closure panel overlying said dust
flaps and an article holding panel folded into said carton from the
front edge of said closure panel, said article holding panel having
a free edge contoured to hold an article.
4. A carton of claim 3 in which said front panel is a pair of
inwardly extending bevel panels.
5. A carton of claim 3 in which the other end of said carton has
article holding means.
6. A blank for a display carton having a front wall which is open
for the display of an article, and adjacent sidewalls having front
corners which may bow outwardly, means for preventing such bowing
comprising
dust flaps attached to said side panels by score lines,
the edge of each of said flaps facing said front panel being
undercut,
one of said dust flaps having a tab extending from said edge,
the other of said dust flaps having a detent extending from said
edge,
said tab and said detent each having an inner edge on the side
toward the score line attaching its dust flap to said side panel,
said inner edge intersecting said undercut edge at a point,
the combined length of said dust flaps between said score lines and
said intersection points being at least equal to the width of said
front panel.
7. The blank of claim 6 in which there is a score line between said
tab and its dust flap.
8. The blank of claim 6 in which there is a back panel and a
closure panel joined to said back panel by a score line.
9. The blank of claim 8 in which there is an article holding panel
joined to the outer edge of said closure panel by a score line.
Description
BACKGROUND OF THE INVENTION
1. Field of the Invention
A display carton having means for positioning the displayed article
within the carton.
2. Description of the Prior Art
Display cartons have been known for many years. However, none have
used a relatively simple means of locking the dust flaps together
to hold the free edge of the sidewalls in place. The sidewalls are
held normally by relatively complex construction using the upper
and lower holding panels. Illustrative of this approach are
Hennessey et al., U.S. Pat. No. 3,270,867, which issued Sept. 6,
1966, Wolowicz et al., U.S. Pat. No. 3,344,911, which issued Oct.
3, 1967 and Hanson et al., U.S. Pat. No. 3,360,118, which issued
Dec. 26, 1967. Each of these patents discloses sidewalls having
free front edges which are held in place by the top and bottom
article holding panels, requiring complex cutting and scoring of
both the sidewalls and the top and bottom article holding
panels.
BRIEF SUMMARY OF THE INVENTION
The free edges of the sidewalls of a display carton are prevented
from bowing outwardly by construction which locks the dust flaps
together.
The dust flaps overlap centrally of the carton. A tab on a first
dust flap is folded back around the second dust flap, and a detent
on the second flap prevents the tab from slipping from the second
flap. The product holds the tab against the second flap.
BRIEF DESCRIPTION OF THE DRAWINGS.
FIG. 1 is a top plan view of the blank.
FIG. 2 is an isometric view of the standing carton. The bottom
flaps are closed and the top flaps are open.
FIGS. 3-5 are isometric views of the carton showing its formation
and the placing of the article within it.
FIG. 6 is a front elevational view of the display package
containing the article.
FIG. 7 is an isometric view of the top of the carton showing the
dust flap locking structure.
DETAILED DESCRIPTION OF THE INVENTION
FIG. 1 shows the blank 10 of the carton. The blank is divided by
score lines 11, 12, 13 and 14 into a first side panel 15, a front
panel 16, a second side panel 17, a back panel 18, and a glue flap
19.
The front panel 16 has a V-cut 20 at its upper edge and a
longitudinal slit 21 and a transverse slit 22 which divide the
panel into a lower article holding panel 23 and two beveled panels
24 which normally fit behind the enclosed article. The panels 24
are hinged to the side walls 15 and 17 by the score lines 11 and 12
respectively.
Lower transverse score line 25 on side panels 15 and 17 and front
panel 16 is aligned with the lower edge 26 of back panel 18 and
glue flap 19. The score line 25 hinges the glue flaps 27 and 28 to
side panels 15 and 17, respectively, and the closure panel 29 to
the article holding panel 23. The tuck panel 30 is hinged to the
closure panel 29 by score line 31. Slits 50 extend outwardly from
the ends of score line 31. The front corners 51 of the dust flaps
27 and 28 extend into the slits to lock the closure panels of the
closed container.
Upper transverse score line 32 forms the hinge between dust flap 33
and side panel 15, dust flap 34 and side panel 17, and closure
panel 35 and back panel 18.
The front edge of dust panel 33 is undercut at 36 and has a
forwardly extending detent 37 at its free outer end. The inner edge
of detent 37 meets the undercut edge 36 at point 38.
The front edge of dust flap 34 is also undercut at 39 and has a
forwardly extending tab 40 at its free end. The tab 40 is hinged to
dust flap 33 by score line 41. The inner edge of tab 40 meets the
undercut edge 39 at 42. This detent normally is longer than the
detent 37 on dust flap 33.
An article holding panel 43 is hinged to closure panel 35 by score
line 44. The holding panel 43 has an outer edge 45 which is
contoured to fit the shape of the contained article.
In the formation of the package, the glue flap 19 is adhered to the
inner face of side panel 15. The bottom flaps are closed in the
usual manner with the closure panel 29 underlying the dust flaps 27
and 28 and the tuck of flap 30 inserted into the carton.
As shown in FIGS. 3-5 and 7, the upper flaps are closed. Dust flap
34 is folded downwardly over dust flap 33. As may be seen, the dust
flaps overlap and the tab 40 is in the center of the carton. The
combined lengths of dust flaps 33 and 34 between the score lines 32
and points 38 and 42 is equal to the width of front panel 16.
Therefore, the detent 37 is between the tab 40 and the score line
32 of flap 34.
Closure panel 35 is folded downwardly overlying the two dust flaps
33 and 34, and locking panel 43 is folded downwardly in the front
of the carton. During this operation, the tab 40 may be bent
downwardly in front of the carton.
The product is now inserted into the lower part of the carton
behind holding panel 23. The article is tilted rearwardly into the
carton, pivoting the panels 24 rearwardly, the holding panel 43
backwardly and upwardly, and the tab 40 rearwardly. When the
product is pushed completely into the carton, the holding panel 43
snaps downwardly and the article is held in place by the edge 45 of
the panel. The side panels 24 prevent the holding panel 43 from
bending outwardly to release the product. The tab 40 is folded back
around flap 33 and is prevented from sliding from the dust flap 33
by the detent 37. The top of the article holds the tab 40 against
the flap 33. This construction prevents the front edges of side
panels 15 and 17 from bowing outwardly. It is also possible to bend
the tab 40 around the dust flap 33 before closing the closure
panels 35 and 43 as shown in FIG. 7.
The lower closure panels may be sealed instead of tucked. In this
construction an inner closure panel 46, shown in skeletal outline
in FIG. 1, is hinged from the lower edge 26 of panel 18 and the
tuck flap 30 on closure flap 29 is eliminated.
* * * * *