CA2139973A1 - Stackable container - Google Patents

Stackable container

Info

Publication number
CA2139973A1
CA2139973A1 CA002139973A CA2139973A CA2139973A1 CA 2139973 A1 CA2139973 A1 CA 2139973A1 CA 002139973 A CA002139973 A CA 002139973A CA 2139973 A CA2139973 A CA 2139973A CA 2139973 A1 CA2139973 A1 CA 2139973A1
Authority
CA
Canada
Prior art keywords
end wall
panel
outer panel
pair
wall
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Abandoned
Application number
CA002139973A
Other languages
French (fr)
Inventor
Daniel Tessier
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to CA002139973A priority Critical patent/CA2139973A1/en
Publication of CA2139973A1 publication Critical patent/CA2139973A1/en
Abandoned legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D21/00—Nestable, stackable or joinable containers; Containers of variable capacity
    • B65D21/02—Containers specially shaped, or provided with fittings or attachments, to facilitate nesting, stacking, or joining together
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D5/00—Rigid or semi-rigid containers of polygonal cross-section, e.g. boxes, cartons or trays, formed by folding or erecting one or more blanks made of paper
    • B65D5/001—Rigid or semi-rigid containers of polygonal cross-section, e.g. boxes, cartons or trays, formed by folding or erecting one or more blanks made of paper stackable
    • B65D5/0015—Rigid or semi-rigid containers of polygonal cross-section, e.g. boxes, cartons or trays, formed by folding or erecting one or more blanks made of paper stackable the container being formed by folding up portions connected to a central panel

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Cartons (AREA)

Abstract

A stackable container made from a corrugated cardboard blank. The stackable container is characterized by a sturdy end wall construction and a tear-off section in one of its side walls. The sturdy end wall construction is achieved by using a composite end wall construction. Each end wall is composed of three juxtaposed panels. The juxtaposed panels making up the composite end walls are kept together by three releasable locking structures. A pair of ledge sections extends inwardly from the end walls. The specific configuration of the blank is such that when the carton is in its erected configuration, the corrugation pattern of the carton is oriented so as to optimize the structural rigidity of the carton.

Description

Patent Application of Daniel Tessier for Stackable Container BACKGRQU~n - FIELD OF THE INVENTION
The present invention relates to the field of containers and is particularly ~ ullc~, "ed with a stackable container made of corrugated container board having a pair of composite end walls each end wall being composed of three panels. The stackable container is also cdldult~ d by a novel method for keeping the three panels making up the end walls in a r~l~asdLle locked l~ldtk~ lliu with one another.
BAcKGRou~ln - PRIQR ART
The increasing popularity of factory outlet stores and warehûuse-type of stores whereinthecustomerisofferedgoodspresentedintheirshipping~ùllldill~lahascreated a need for stackable COIlLdil~ , having a sturdy end wall construction and a tear-off section in one of their side walls.
Although the art of container is replete with col Itdil It:l a having various configurations most stackable cû, I~dil It~l ~ are cu" 'I ~ to manufacture and assemble.
These prior art structures are also not fully adapted for the above ",t:"t;oned type of ~ 213997~
usage.
A search amongst previous patents has revealed three documents disclosing stackable container structures pertinent to the field. One such container by Robert L.
Watson in U.S. Patent 4,613,045, issued August 29, 1985, teaches a generai purpose stackable cardboard box. Strenght and rigidity are obtained by folding excess flap material to form a triangular shaped post in each corner inside the box. Such a ~ n creates an irregular cargo space inside the container and may restrain the ability to package goods firmly.
Another container by Willamette Industries, Inc, U.S.A. in Canadian Patent 0 1,215,004, issued December 9, 1986, teaches a stackable container with locking lid. In this case, three pieces of cardboard are folded and then glued together to form the container which can be an elaborate process. Furthermore, cu, lldil 1~ may not be taken apart once erected. Canadian Patent 448,319 granted to Oscar L. Vines on November 5, 1957, discloses a container requiring a transverse strip of glue to the side wall during erection of the container. The stnucture is thus more cu,,,, ' to manufacture and requires two different types of products.
SUMMARY OF THE LNVENTION ~
An object of the present invention is to provide an improved stackable container.
The stackable container in acuu~ .ld"ce with an ~" ,uo~i" ,e"~ of the present invention will be of sturdy construction in order to withstand the weight of co, I~dil ,~, a or other structures 2139~73 which may be rested on top of it.

The stackable container in ac~u, dal ,ce with the present invention will be easily and ~,yuno",i~alJ foldable from its blank configuration to its erected configuration. The 5 stackable container in acc~, ddl ,ce with the present invention will provide end walls having a composite three panel construction with two of the end wall panels having their corrugation lines pel ue:l ,diuular to the bottom wall. The stackable container in accurddl ,ce with the present invention will provide an end wall composite construction made up of three panels which are releasably locked in face to face abutting r~ kJIl~ J with three 10 different l~l~d:~diJIa locking structures.

The stackable container in ac.oldd"~.e with the present invention will have side walls with corrugation lines perpendicular to the bottom wall and with at least one tear-off section extending therethrough.

The stackable container in acc~,.ld"~e with the present invention will have a tongue and groove system which is adapted to facilitate the stacking of multiple Cull~aill~la and which is adapted to stabilize a given stack of Culltaillt~

The stackable container in accu, ~dl ,. e with the present invention will be provided with a ledge section extending integrally from the end walls and cûvering partially the open top of the cullldil,t:,a.

~ 2139973 The stackable container in a~.~.o"~d"~.e with the present invention will conform to conventional forms of manufacturing and be of simple construction as to provide stackable ~ul lldil ,t" :. which are ecùnul ~ y feasible.

According to one t:" ~uo~ "e"l of the present invention there is provided a carton blank for forming a stackable container the carton blank ~u",,uli:,i"g a generally rectangular bottom wall (12) having opposite bottom wall side edges and opposite bottom wall end edges, a pair of side walls (14 and 16) hingely cullll~. ~tld with the bottom wall side edges by a pair of side wall fold lines (18) each one of the side walls having a first side wall side edge co""e~ d with the bottom wall (12) by the side wall fold line (18), a second side wall side edge located opposite the first side wall side edge and, a pair of opposite side wall end edges each side wall end edge cu",~e~ li"g suL~ld"li.. y pe,u~"di~ularly with the first side wall side edge and the second side wall side edge a pair of end wall outer panels (22) hingely connected with the bottom wall end edges by 15 a pair of outer panel fold lines (26) each one of the end wall outer panels (22) having a first end wall outer panel end edge connected with one of the bottom wall end edges by one of the outer panel fold lines (26) a second end wall outer panel end edge located opposite the first end wall outer panel end edge and, a pair of opposite end wall outer panel side edges the end wall outer panel end edges co""e~ li"g suLal~l, 'l~
20 ~ di~ ularly with the first end wall outer panel end edge and the second end wall outer panel end edge, a pair of end wall inner panels (24) hingely co~ eul~cl to each side wall (14 and 16) along the side wall end edges by a pair of end wall inner panel fold lines ~ 2139973 (28), each one of the end wall inner panels (24) having: a first end wall inner panel end edges con~e~ d with one of the side walls (14 and 16) by one of the fold lines (28), a second end wall inner panel end edge located opposite the first end wall inner panel end edge and, a pair of opposite end wall inner panel side edges, each one of the end wall 5 inner panel side edges co~ ,9 substantially perpendicularly with the first end panel end edge and the second end panel end edge, a pair of locking tongues (46) hingely cv""e.,lt:d with each one of the end wall outer panels (22) along a segment of the opposite side wall end edges by a locking tongue first fold line (48), each one of the locking tongues (46) having: a first locking tongue side edge ~u~ e~iLt:d with one of the o end wall outer panels (22) by one of the locking tongue frst fold line (48), a second locking tongue side edge located opposite the first locking tongue side edge and, a pair of opposite locking tongue end edges, each one of the locking tongue end edge Col~l~e(;li~ ~9 subal~ 'Iy perpendicularly with both the first locking tongue side edge and the second locking tongue side edge, each one of the locking tongues (46) being spaced 15 from a proximal outer panel fold line (26) by a locking tongue spacing distance, each one of the locking tongues (46) having a locking tongue spacing distance coll~alJol1di suL:,ld"li. l'y to the distance between the first locking tongue side edge and the second locking tongue side edge, an end wali inner panel cutout opening (54) extending through each one of the end wall inner panels (24) adjacent the end wall inner panel fold line (28), 20 the end wall inner panel cutout openings (54) being spaced from a proximal side wall fold line (18) by an end wall inner panel cutout opening spacing distance which co" ~Jon.l:, sub~ l 'Iy to the locking tongue spacing distance, the end wall inner panel cutout ~ 2139~73 opening being configured and sized to receive a proximal second locking tongue side edge, a pair of side panel cutout openings (56) extending through each side panel (14 and 16), each one of the side panel cutout openings (56) being spaced from a proximal inner panel fold line (28) by a side panel cutout opening first spacing distance which 5 cull~ayOI~d:, sub:,Ld"' 'Iy to one half of the locking tongue length, each one of the side panel cutout openings (56) being spaced from a proximal side wall fold line (18) by a side panel cutout opening second spacing distance which co" t~ U~ su~ldl, 'Iy to the end wall inner panel cutout opening spacing distance. each one of the side panel cutout openings (56) being configured and sized to receive one of the locking tongues (46).

Fl~:rt:lldbly, the carton blank furthercomprises a pair of ledge sections (30), each one of the ledge sections (30) being hingely connected with one of the end wall outer panel (22) along the second end wall outer panel end edge by a ledge fold line (32), each one of the ledge sections having: a first ledge section end edge ~u, "~euLt,d with one of 15 the end wall outer panel (22) by the ledge fold lines (32), a second ledge section end edge located opposite the first ledge section end edge, a pair of opposite ledge section side edges, the ledge section side edges co""e~Li"g su~:~Ldl l~;~I'y pe~ ,.li.,ularly with the first ledge section end edge and the second ledge section end edge, a pair of locking flaps (66) hingely col",~,Ltd with each one of the ledge sections (30) along one of the 20 opposite ledge section side edges by a locking flap fold line (68), each one of the locking flaps (66) having: a first locking flap side edge connected with one of the ledge section side edges by one of the locking flap fold line (68), a second locking flap side edge ~ 2139973 located opposite the first locking flap side edge, a pair of opposite locking flap end edges, both locking flap end edges uo~ e.:~i"~ with the first locking flap side edge and the second locking flap side edge.
Conveniently, the carton blank further comprises an outer panel handle aperture extending through each of the outer panels (22), an inner panel handle aperture (126) formed in each of the inner panels, the inner panel apertures being positioned so as to be sul,ald" 'Iy in register with one of the outer panel apertures when the stackable contalner is in an erected configuration.

P~ dbly, each of the panel handle apertures is suba~d"~ "y centrally located relatively to a pair of adjacent end wall cut lines (34), each of the outer panel handle aperture being defined by a first transversally extending outer panel handle cut line (114), a pair of angled outer panel handle cut line (116), a pair of first longitudinally extending outer panel handle cut line (118), a pair of second transversally extendlng outer panel handle cut line (120), a pair of second longitudinally extending outer panel handle cut line (122) and a transversally extending outer panel fold line (124), each of the outer panel handle cut lines (114) being typically located at a dlstance from a proximal outer panel fold line (26) which cu" ts:~l01 Ida to d,~JIJI W~il I ' Iy two-thirds of the distance between the proximal outer panel fold line (26) and a proximal ledge fold line (32), the length of the outer panel handle cut line (114) being typically slzed so as to slightly exceed the width ~ n~very~humanh~nd,ea~ho~he :ngled~uterpan~lh~ndle(~1d)connetingat ~ 213~73 one of its end to an end portion of an adjacent transversally extending outer panel handle cut line (114), the angled outer panel handles (116) typically extending over a length which cull~a~Jul,d~ d~Jpluxillld~t:ly to three tents of the length of a proximal outer panel handle cut line (114), the angled outer panel handles (116) extending Sl,lb:.ldl l';~ y at 45 5 degrees relatively to a proximal outer panel handle cut line (114), the angled outer panel handles (116) being generally outwardly oriented, each of the longitudinally extending outer panel handle cut lines (118) cu,,,,- ,g with an end segment of a proximal angled outer panel handle cut line (116), the longitudinally extending outer panel handle cut lines (118) extending sub:j~dl, '1~ longitudinally and being generally outwardly oriented, the 1û longitudinally extending outer panel handle cut line (118) typically extending over a length of d~U~JlU~illld~t5ly one half of the length of a proximal angled outer panel handle cut line (116), each of the longitudinally extending outer panel handle cut lines (118) cul ,l ,e~:til ,9 with a proximal transversally extending outer panel handle cut line (120), both of the second transversally extending outer panel handle cut lines (120) of each one of theouter 15 panel handles (112) extending towards each other, each of the second transversally extending outer panel handle cut lines (120) cu, " ,e~,ti"g with one of the proximal second longitudinally extending outer panel handle cut lines (122), a transversally extending outer panel fold line (124) co""eL:till~ at both of its ends with the second longitudinally extending outer panel handle cut lines (122), each of the inner panel handle apertures 2û (126) is being defined by a pair of longitudinally extending inner panel handle aperture cut lines (128) and a pair of transversally extending inner panel handle aperture cut lines (~3û).fhrl~ngthof~helongitudinally~t~ndlnglnnerpanelh~ndl~apeturecutlln~s(1Zd) ~ 2139973 being suL~Ld"t;..,ly equal to the length of the transversally extending outer panel fold lines (124), the length of the transversally extending inner panel handle aperturQs (130) being su~aldl ILi~.,'y equal to the distance between one of thQ transversally extending outer panel handle cut lines (114) and a proximal transversally extending outer panel fold line (124).

Conveniently, the carton blank further comprises an inner panel bottom aperture (90) extending through each of the inner panels (24), the inner panel bottom apertures (90) being formed adjacent a proximal end wall cut line first segment (36), suL.:,L~"t;..'lJ
halfway between a proximal inner panel fold line (28) and a proximal end wall cut line 10 second segment (38).

rltSr~lldLIIy, each of the inner panel bottom apertures (90) is defined by a longitudinally extending inner panel bottom aperture cut line (92) and a pair of transversally extending inner panel bottom aperture cut lines (94), the longitudinally extending inner panel bottom aperture cut lines (92) being outwardly offset relatively to the proximal end wall cut line first segment (36), the transversally extending inner panel bottom aperture cut lines (94) extending from the proximal end wall cut line first segment (36) to a proximal longitudinally extending inner panel bottom aperture cut line (92).

Conveniently, the carton blank further comprises a pair of end and bottom panel apertures (96) extending through each of the end wall outer panels (22) and the bottom wall (12) along each outer panel fold lines (26).

213~7~
Conveniently, each of the end and bottom panel apertures (96) is defined by a first transversally extending end and bottom aperture cut lines (98), a second transversally extending end and bottom aperture cut lines (100) and a cu~ ap(,l llli"~ pair of longitudinally extending end and bottom aperture cut lines (102).

Preferrably, the first transversally extending end and bottom aperture cut lines (98) is formed in the bottom wall (12) while the second transversally extending end and bottom aperture cut lines (100) are formed in the end wall outert panels (22) the first transversally extending end and bottom aperture cut lines (98) and the second transversally extending lû end and bottom aperture cut lines (100) being sub:,Lal,';~lJ equally spaced relatively to the outer panel fold lines (26), the longitudinally extending end and bottom aperture cut lines (102) co""e~,~i, ,9 the first transversally extending end and bottom aperture cut lines (98) and the second transversally extending end and bottom aperture cut lines (100) at both ends thereof, the length of the longitudinally extending end and bottom aperture cut lines 102 being d~J~nu~ lld~tlly twice the length of the proximal transversally extending inner panel bottom aperture cut line (94).

Conveniently, the carton blank further comprises a pair of end wall outer panel locking tongues (104) extend integrally from each the end wall outer panels (22) along the proximal ledge fold line (32), the end wall outer panel locking tongues (104) being formed by a ~u"~ ",ondi, ,9 pair of transversally extending outer panel locking tongue cut lines (106) and ~,u,, ~.OI n~i"g longitudinally extending outer panel locking tongue cut lines 2139~7~
(1 08).

Conveniently, the carton blank further comprises an end wall inner panel second edge, the an end wall inner panel second edge being defined by an inner panel peripheral s top edge (62) and a first integrally extending end wall inner panel locking tongue (78) and a second integrally extending end wall inner panel locking tongue (80).

Conveniently, the carton blank further comprises a removable section (138), the removable section (138) bveing formed in the side panel (140), the removable section 10 (138) being delimited by a pair of inwardly converging removable section angled cutout lines (140) and a longitudinally extending removable section cutout line (142) each of the removable section angled cutout line (140) extending from a proximal longitudinally extending side panel peripheral cut line (136) the removable section angled cutout lines (140) being in an inwardly converging " ' ~ , relatively to one another, the removable section angled cutout lines (140) each co""e-,ti"g with the longitudinally extending removable section cutout line (142).

According to another ~",bo.li",el,l of the present invention, ther is provided a carton formed from a carton blank, the carton comprises a generally rectangular bottom 20 wall (12) having opposite bottom wall side edges and opposite bottom wall end edges, a pair of side walls (14 and 16) hingely connected with the bottom wall side edges by a pair of side wall fold lines (18), each one of the side walls having: a first side wall side ~ 2139~73 edge co""e~ hd with the bottom wall (12) by the side wall fold line (18) a second side wall side edge located opposite the first side wall side edge and a pair of opposite side wall end edges each side wall end edge co"~ ,e~.ti"g suL,:jL~"~;..I ~ p~, u~ ularly with the first side wall side edge and the second side wall side edge a pair of end wall outer 5 panels (22) hingely cu, " ,e~ hd with the bottom wall end edges by a pair of outer panel fold lines (26) each one of the end wall outer panels (22) having: a first end wall outer panel end edge cu"lle~:tt:d with one of the bottom wall end edges by one of the outer panel fold lines (26) a second end wall outer panel end edge located opposite the first end wall outer panel end edge and a pair of opposite end wall outer panel side edges 10 the end wall outer panel end edges Cu""f ~ subaldl l~ ly pel ,~ ularly with the first end wall outer panel end edge and the second end wall outer panel end edge a pair of end wall inner panels (24) hingely connected to each side wall (14 and 16) along the side wall end edges by a pair of end wall inner panel fold lines (28) each one of the end wall inner panels (24) having a first end wall inner panel end edges co""e~ hd with one of the side walls (14 and 16) by one of the fold lines (28) a second end wall inner panel end edge located opposite the first end wall inner panel end edge and a pair of opposite end wall inner panel side edges each one of the end wall inner panel side edges cu"lle~iLi"g sub:iLdl lli.~:'y pel y~l ,di~ularly with the first end panel end edge and the second end panel end edge a pair of locking tongues (46) hingely connected with each one of the end wall 20 outer panels (22) along a segment of the opposite side wall end edges by a locking tongue first fold line (48) each one of the locking tongues (46) having: a first locking tongue side edge cù,,,,e~;Led with one of the end wall outer panels (22) by one of the 213~373 locking tongue first fold line (48), a second locking tongue side edge located opposite the first locking tongue side edge and, a pair of opposite locking tonguQ end edges, the locking tongue end edges, each locking tongue end edge connecting sub~d,..i~:'y "~i~,ularly with both the first locking tongue side edge and the second locking tongue 5 side edge, each one of the locking tongues (46) being spaced from a proximal outer panel fold line (26) by a locking tongue spacing distance, each one of the locking tongues (46) having a locking tongue spacing distance cu" t:~ol~.li"~ SUbaLdl 1" 'Iy to the distance between the first locking tongue side edge and the second locking tongue side edge, an end wall inner panel cutout opening (54) extending through each one of the end wall inner 10 panels (24) adjacent the end wall inner panel fold line (28), the end wall inner panel cutout openings (54) being spaced from a proximal side wall fold line (18) by an end wal~
inner panel cutout opening spacing distance which Co"~,o~, sub~ld"Li~ to the locking tongue spacing distance, the end wall inner panel cutout opening being configured and sized to receive a proximal second locking tongue side edge, a pair of side panel cutout openings (56) extending through each side panel (14) and 16), each one of the side panel cutout openings (56) being spaced from a proximal inner panel fold line (28) by a side panel cutout opening first spacing distance which c~ .pol1d~ SUb::~LdllLi~ / to one half of the locking tongue length, each one of the side panel cutout openings (56) being spaced from a proximal side wall fold line (18) by a side panel cutout opening 20 second spacing distance which c~ .ol,d:, suL,~ldllLi..:ly to the end wall inner panel cutout opening spacing distance. each one of the side panel cutout openings (56) being t tt~ ured ttnd sized to: ceive ttne ~ t r locking tonllut t (4d), t te side wt tls (t 4 tt d 2~3~973 .
16) bQing disposed sub:~ldll - 'Iy perpendicularly to the bottom wall (12) the end wall outer panels (22) and the end wall inner panels (24) collabu,dli,,g for forming a pair of composite end walls (20) the composite end walls (20) being disposed SU~`ldll i.-l.
p~ u~diuularly to the bottom wall (12) and to the side walls (14 and 16) the locking 5 tongues (46) being insertted in the end wall inner panel cutout openings and the side panel cutout openings (66) for releasably locking the end wall outer panels (22) and th~
end wall inner panels (24) forming the composite end walls (20) together.

BRIEF DE~R~ CI~ OF THE DRAWINGS

An ~Illbodi~ of the invention will now be described by way of example in reference to the following drawings in which:

FIGURE 1: in a perspective view illustrates a stackable container in a~ ..c,r-ld"ce with an ~IllLo~i,,lt:, ,~ of the present invention;

FIGURE 2: in a perspective view illustrates a pair of stackable C~llldill~l:, in acco,dal,ce with an ~"ILo.li",~"l of the present invention in a stacked r~ldliul l~l ,iu relatively to one another;

FIGURE 3: in a top plan view illustrates a stackable container blank in acc~ dl ,ce with an c~ b~di~ ~ ~el ~l of the present invention;

2139~73 IGURE 4: in a rldylllt:llLdly perspective vlew illustrates an inner portion of an end section of a stackable container in acGolddllce with an e",uodi",el,l of the present invention in a partially folded configuration;

IGURE 5: in a rldylll_llLdly p~,:,u~ui;ic view illustrates an inner portion of an end section of a stackable container in a~._u,dd"ce with an ~Illbo~ of the present invention the locking flaps being in a partially folded configuratiûn.

0 FiGURE 6: in a rldylll~:llLdiy perspective view illustrates an outer portion of an end section of a stackable container in aclu,-ld"~e with an ~",uO.Iil"e"L of the present invention in a folded configuration;

DETAILED DESCRIPTIQN .

Referring to figure 1 there is shown a stackable container 10 in acc~"~d"ce with an ~Illbo.li~ l of the present invention. The stackable container 10 is shown in a erected configuration E. In figure 3 the stacka~le container 1û is shown in the form of a 20 blank B of unfolded pd,lJt~l LJOdld which is cut and scored for folding into the configuration E of figure 1.

~ 213~973 The stackable container 10 has a sub:,Ld" 'Iy rectangular bottom wall 12. A pair of opposed side walls 14 and 16 are hingely attached to the bottom wall 12 along a cu"~ .ol~di"g pair of longitudinally extending side wall fold lines 18. A pair of opposed end walls 20 are provided on each longitudinal end of the bottom wall 12.

It should be ":~,oy, li~t:d that the terms, end wall and side wall, are used to describe an ~Illbo.li~ of the present invention wherein the stackable container 10 has a generally rectangular configuration. However, the scope of the present invention should also include cu"t~;"~,:, having a generally square configuration.

In order to achieve a sturdy stackable container 10, each end wall 20 is composite in construction. Each end wall 20 individually comprises an end wall outer panel 22 and a pair of end wall inner panels 24. Each end wall outer panel 22 is hingely attached to the bottom wall 12 along a transversally extending outer panel fold line 26. Each end wall inner panel 24 is hingely attached to a coll~ ul-dil~g side wall 14 or 16 along a transversally extending inner panel fold line 28.

When the stackable container 10 is erected, as h~l t i, ldrL~l described, the end wall outer panel 22 and the end wall outer panels 24 on each longitudinal side are folded so 20 as to cooperate in forming a sturdy end wall 20 capable of V~ dl~dilly a~ plt:~,id~le structural stress.

~ 2139373 A suLa~dl,t; uly elongated ledge section 30 is hingely attached to each end wall outer panel 22 along a transversally extending ledge fold line 32. Each end wall outer panel 22 is thus defined by a transversally extending outer panel fold line 26 a transversally extending ledge fold line 32 and a pair of opposed longitudinally extending 5 end wall cut lines 34. When the stackable container 10 is erected as l~e~ dr~
described the outer panel fold lines 26 form the lower peripheral edges of the end wall outer panels 22 the ledge fold lines 32 form the upper peripheral edges of the end wall outer panels 22 and the end wall cut lines 34 form the side peripheral edges of the end wall outer panels 22.

Each end wall inner panel 24 is separated from a proximal end wall outer panel 22 by a cu" ~:.pull~i"~ end wall cut line 34. Each end wall cut line 34 has a longitudinally extending end wall cut line first segment 36. Each end wall cut line first segment 36 is su~a~dl,~i~'y collinear with a proximal side wall fold line 18 and connects suba~d" 'Iy 15 p~ "dicularly with both a proximal outer panel fold line 26 and a proximal inner panel fold line 28.

Each end wall cut line first segment 36 merges integrally with an end wall cut line second segment 38. Each end wall cut line second segment 38 extends SU~:~dl~ y 20 transversally outwardly and SU~ dl 1';.~"~ perpendicularly relative to the proximal end wall cut line first segment 36. Typically each end wall cut line second segment 38 extends over a distance d~J,UlUAill l.~\,ly equal to one and a half time the length of the end wall cut ~ 2139973 line first segment 36. Typically, the end wall cut line second segment 38 is positioned at a distance from a proximal outer panel fold line 26 which co~ ,,uù~ to d,U,UIUAil,..t~,'y two-thirds of the distance between a proximal outer panel fold line 26 and a proximal ledge fold line 32.

Each end wall cut line second segment 38 merges integrally into an end wall cut line end wall cut line third segment 4û. Each end wall cut line third segment 40 extends SUb~ dl lli., ly longitudinally away from a proximal outer panel fold line 26 and suL:,Id"Li..:'y p~"uc~ .ularly relative to the proximal end wall cut line second segment 38. Typically, 10 each end wall cut line third segment 40 extends over a distance dp,uruAillld~ly equal to one half the length of a proximal end wall cut line second segment 38.

Each end wall cut line third segment 40 merges integrally into an end wall cut line end wall cut line fourth segment 42. Each end wall cut line fourth segment 42 extends 15 su~Ld"';~:!y transversally, inwardly and substantially pel,u~l,di~,ularly relative to the proximal end wall cut line third segment 40. Typically, each end wall cut line fourth segment 42 extends over a distance d,U,UlUA;III ' Iy equal to a proximal end wall cut line second segment 38.

Each end wall cut line fourth segment 42 merges integrally into an end wall cut line end wall cut line fifth segment 44. Each end wall cut line fifth segment 44 extends sub~ld"li~l'y longitudinally, towards a proximal ledge fold line 32 and sub:,~dll~i..:'y ~ 2139973 pe".t:",li~ ularly relative to the proximal end wall cut line fourth segment 42. Typically each end wall cut line fifth segment 44 extends over a distance ~IJIUAillld~t:ly equal to a proximal end wall cut line third segment 40. Each end wall cut line fifth segment 44 connects with a proximal ledge fold line 32.

The outer panel fold line 26 and the transversally extending ledge fold line 32 both connect at one of their ends to one of the end wall cut lines 34 and at their other end to the other one of the two end wall cut lines 34 defining an end wall outer panel 22. The dlstance between a proximal outer panel fold line 26 and a proximal ledge fold line 32 lû advantageously d~ UAillldL~s the height of the end walls 2û of the erected stackable container 10.

Each end wall outer panel 22 has a pair of integrally extending and hingely attached locking tongues 46. The locking tongues 36 extend outwardly and laterally from 15 the cull~l,ol~.li,,~ end wall outer panel 22. Each locking tongue 46 is attached to a proximal outer panel 22 along a locking tongue first fold line 48. The locking tongue first fold line 48 is sub:,ld"~ 'y collinear with both the end wall first segment 36 and the end wall fifth segment 44. The locking tongue first fold line 48 may also be slightly offset outwardly relatively to both the end wall first segment 36 and the end wall fifth segment 20 44.

Each locking tongue 46 is defined by a locking tongue first fold line 48 an end wall ~ 213997~
cut line second segment 38, an end wall cut line third segment 40 and an end wall cut line fourth segment 42. Although the locking tongue illustrated in figures 1 through 6 is shown as having a sub:,ld"' 'Iy rectangular configuration, it could have another 9~011,~ iCdl configuration without departing from the scope of the invention. For example, 5 the end wall cut line second segment 38 and the end wall cut line fourth segment 42 may taper outwardly towards one another.

Each locking tongue 46 also has a locking tongue second fold line 50 and a locking tongue third fold line 52. Both the locking tongue second fold line 50 and the 10 locking tongue third fold line 52 extend in a direction which is sub~ldl, 'Iy parallel to the locking tongue first fold line 48. The locking tongue second fold line 50 and the locking tongue third fold line 52 are relatively centrally spaced between the locking tongue first fold line 48 and the end wall cut line third segment 40. The locking tongue second fold line 50 and the locking tongue third fold line 52 are also relatively close to one another.

A pair of cutout openings 54 and 56 are formed It~ ,e~ cly in the end wall inner panels 24 and in the side walls 14 and 16. The cutout openings 54 and 56 formed respectively in the end wall inner panels 24 and in the side walls 14 and 16 may be punched therein, or, preferably are defined respectively by the cutout lines 58 and 60.

The cutout openings 54 have a substantially rectangular and elongated configuration. The cutout openings 54 are longitudinally oriented parallel to the inner 2i39~73 panel fold lines 28. In fact, the cutout openings 54 are disposed with one of their longitudinal peripheral edges abutting against a proximal inner panel fold line 28.
Typically, the cutout openings 54 are positioned relatively adjacent an outer peripheral edge 62 of the end wall inner panel 24.

The cutout openings 56 have a general configuration and u~ dlioll suuald, I';~,ly similar to general configuration and orientation of the cutout openings 54. The distance between a pair of proximal cutout openings 54 and 56 is sub:,ld"~ equal to the distance between the locking tongue first fold line 48 and the locking tongue second fold line 5û of an adjacent locking tongue 46. The cutout openings 54 and 56 are positioned so that when the stackable container 10 is erected as lle,t:i"drlt, described, the locking tongue 46 engages both the cutout openings 54 and 56.

As " ,e"liulled l~ illb~,Fvltl, a sub:,ld"li.~,ly elongated ledge section 30 is hingely 15 attached to each end wall outer panel 22 along a transversally extending ledge fold line 32. The ledge section 3û has a ledge outer peripheral edge 64. The ledge outer peripheral edge 64 extends in a direction sub~ldl, 'Iy parallel to the ledge fold line 32.

A pair of locking flaps 66 is hingely attached to each ledge section 30 along a 20 coll~,uolld~ J pair of locking flap fold lines 68. Each locking flap fold line 68 extends sub:,ld"t;~ly per~,~l ,dicularly from a proximal ledge fold line 32 to a proximal ledge outer peripheral edge 64. Each locking flap fold line 68 is sub:~ldl lli..l,~ collinear with a proximal ~ 213997~
end wall cut line fifth segment 44. Preferably, each locking flap fold line 68 is slightly outwardly offset relatively to its proximal end wall cut line fifth segment 44.

Each locking flap 66 is defined by a locking flap fold line 68, a locking flap cut line 5 first segment 70, a locking flap cut line second segment 72, a locking flap cut line third segment 74 and a locking flap cut line fourth segment 76.

Each locking flap cut line first segment 70 extends in a SUU:~Id~ Y collinear l~ldLio~ J with a proximal ledge fold line 32. Each locking flap cut line first segment 70 10 extends suuaLd, I~;..I'y transversally and outwardly. Each locking flap cut line first segment 70 connects sub~ld~ .,'y perpendicularly with both a proximal end wall cut line fifth segment 44 and a proximal locking flap fold line 68. Typically, each locking flap cut line first segment 70 extends over a distance d,~J,UI UAil I ' 'y equal to the length of a proximal end wall cut line fourth segment 42.

Each locking flap cut line first segment 70 merges integrally into a locking flap cut line second segment 72. Each locking flap cut line second segment 72 extends suu~Ldll "y pel~ "di.,ularly relative to the locking flap cut line first segment 70, in a direction leading away from a proximal inner panel fold iine 28. Typically, each locking 20 flap cut line second segment 72 extends over a distance d,u,uluAillldll:ly equal to two-thirds of the length of a proximal locking flap fold line 68.

~ 2~39~7~
Each locking flap cut line second segment 72 merges integrally into a locking flap cut line third segment 74. Each locking flap cut line second segment 72 extends suL:,Id"li~"y transversally, inwardly towards a proximal locking flap fold line 68 and SUb:~dl lli...ly perpendicularly relative to the proximal locking flap cut line second segment 5 72. Typically, each end wall cut line fourth segment 42 extends over a distance d,u~JIuxillldlt:ly equal to one half of the length of a proximal locking flap cut line first segment 7û.

Each locking flap cut line third segment 74 merges integrally into a locking flap cut 10 line fourth segment 76. Each locking flap cut line fourth segment 76 diverges inwardly.
Each locking flap cut line fourth segment 76 extends from a proximal locking flap cut line third segment 74 to the i"l~,:,euliu" of a proximal locking flap fold line 68 and a proximal ledge outer peripheral edge 64. Since, as pointed out lle, t i"l,~fu, ~, each locking flap cut line second segment 72 extends over a distance appl UAil I Idlt:ly equal to two-thirds of the 15 length of a proximal locking flap fold line 68. Each locking flap cut line fourth segment 76 is thus angled relatively to both the proximal locking Rap cut line third segment 74 and the proximal ledge outer peripheral edge 64.

Each locking flap 66 is configured, sized and positioned so that when the stackable 20 container is in its erected configuration, the locking flap may be lockingly wedged between a proximal locking tongue 46 and a segment of a proximal side wall 14 or 16.

~, 213997~
Each end wall inner panel 24 generally has four peripheral edges. An end wall inner panel first edge is defined by an inner panel fold line 28 and its as.so~ d cutout line 58. The end wall inner panel first edges are adapted to be positioned in the corner edges of the stackable container when the latter is in its erected configuration.

An end wall inner panel second edge is defined by each inner panel peripheral top edge 62 and each pair of integrally extending end wall inner panel locking tongues 78 and 80. The inner panel peripheral edges 62 are formed by ~.u~ ,,uùlldill9 longitudinally oriented cut lines. The end wall inner panel locking tongues 78 are formed by a lû C~ Jol~i, Ig pair of longitudinally extending inner panel locking tongue cut lines 82 and cu" ~ n.li"~ transversally extending inner panel locking tongue cut lines 84.

The longitudinally extending inner panel locking tongue cut lines 82 are outwardly offset relatively to the inner panel peripheral top edge 62. The transversally extending 15 inner panel locking tongue cut lines 84 connect the proximal ends of the longitudinally extending inner panel locking tongue cut lines 82 with the inner panel peripheral edge 62.
The end wall inner panel second edges are adapted to be positioned at the top of the stackable container when the latter is in its erected configuration.

The end wall inner panel locking tongues 8û are located further away from the proximal inner panel fold lines 28 than the proximal end wall inner panel locking tongues 78. Each end wall inner panel locking tongue 80 is defined by a transversally extending ~ 213997~
inner panel locking tongue cut line 84, a longitudinally extending inner panel locking tongue cut lines 82 and an inner panel outer cut line 86. Each inner panel outer cut line 86 extends suL:,ld"'i~.:'y transversally from an inner panel locking tongue cut line 84 to a longitudinaliy extending inner panel lower cut line 88.

The inner panel outer cut lines 86 extend in a sub:,ld"Li~::y parallel l~:ld~io~
relatively to the ledge outer peripheral edges 64. The inner panel outer cut lines 86 are however outwardly offset relatively to the ledge outer peripheral edges 64. The inner panel outer cut lines 86 define the end wall inner panel third edges. The end wall inner o panel third edgQs are adapted to be positioned inside the stackable container when the latter is in its erected configuration.

Each longitudinally extending inner panel lower cut line 88 extends s~ "~ 'y transversally from a proximal inner panel outer cut line 86 to a proximal locking flap cut 15 line fourth segment 76. The inner panel lower cut lines 88 connect with the locking flap cut line fourth segments 76 at a location positioned i, l~r" ledid~tt the locking flap fold line 68 and the i~ ,e~,tivll of the locking flap cut line third segment 74 with the locking flap cut line fourth segment 76.

An inner panel bottom aperture so extends through each inner panel 24. The inner panel bottom apertures 9o are formed adjacent a proximal end wall cut line first segment 36, SU~ldl II;..I:J halfway between a proximal inner panel fold line 28 and a proximal end ~ 213g~73 wall cut line second segment 38.

Each inner panel bottom aperture 90 is defined by a longitudinally extending inner panel bottom aperture cut line 92 and a pair of transversally extending inner panel bottom 5 aperture cut line 94. The longitudinally extending inner panel bottom aperture cut line 92 are outwardly offset relatively to the proximal end wall cut line first segment 36. The transversally extending inner panel bottom aperture cut lines 94 extend from a proximal end wall cut line first segment 36 to a proximal longitudinally extending inner panel bottom aperture cut line 92.

Each end wall inner panel fourth edge is defined by the peripheral edge of the inner panel 24 formed by an end wall cut line first segment 36, an adjacent end wall cut line second segment 38, an adjacent end wall cut line third segment 40, an adjacent end wall cut line fourth segment 42, an adjacent end wall cut line fifth segment 44, an 15 adjacent locking flap cut line first segment 70, an adjacent locking flap cut line second segment 72, an adjacent locking flap cut line third segment 74, an adjacent locking flap cut line fourth segment 76 and an adjacent inner panel lower cut line 88. The end wall inner panel fourth edges are adapted to be positioned adjacent the bottom of the stackable container when the latter is in its erected configuration.

A pair of end and bottom panel apertures 96 extend through both each end wall outer panel 22 and the bottom wall 12 along each outer panel fold line 26. Each end and 213~973 .
bottom panel apertures 96 is defined by a first transversally exknding end and bottom aperture cut lines 98, a second transversally extending end and bottom aperture cut lines 100 and a cv,,~ ,vlldi,,g pair of longitudinally extending end and bottom aperture cut lines 102.

The first transversally extending end and bottom aperture cut lines 98 is formed in the bottom wall 12 while the second transversally extending end and bottom aperture cut lines 100 is formed in the end wall outer panel 22. The first transversally extending end and bottom aperture cut lines 98 and the second transversally extending end and o bottom aperture cut lines 100 are substantially equally spaced relatively to the outer panel fold line 26. The longitudinally extending end and bottom aperture cut lines 102 connect the first transversally extending end and bottom aperture cut lines 98 and the second transversally extending end and bottom aperture cut lines 100 at both ends thereof. The length of the longitudinally extending end and bottom aperture cut lines 102 is 15 ~,,v,~i" ,~,'y twice the length of a proximal transversally extending inner panel bottom aperture cut lines 94.

Each end and bottom panel apertures 96 is configured, sized and positioned so that when the stackable container 10 is in its erected configuration, an inner panel bottom 20 aperture 90 will be suba~ t;~ in register with the latter. The end and bottom panel apertures 96 and the inner panel bottom aperture 90 thus cooperate to allow ventilation at the bottom of the stackable container 10 in its erected configuration.

213g973 A pair of end wall outer panel locking tongues 104 extend integrally from each end wall outer panel 22 along the proximal ledge fold line 32. The end wall outer panel locking tongues 104 are formed by a u~"t,~l,on,li"y pair of transversaliy extending outer panel iocking tongue cut lines 106 and cullt,a~Jul,di"g longitudinally extending outer panel locking tongue cut lines 108.
The transversally extending outer panel locking tongue cut lines 106 are outwardly offset relatively to the proximal ledge fold line 32. The longitudinally extending outer panel locking tongue cut lines 108 connect the proximal ends of the transversally extending 1û outer panel locking tongue cut lines 106 with the proximal ledge fold line 32. The folding of the ledge section 30 along the ledge fold line 32 creates a pair of ledge fold line apertures 110. The ledge fold line apertures 110 are adapted to receive the end wall inner panel locking tongues 78 and 80 when the stackable container 10 is in its erected configuration.
An end wall outer panel handle 1121s formed in each end wall outer panel 22.
Each end wall outer panel handle 112 is SUb::,ldl 1" 'Iy centrally located relatively to a pair of adjacent end wall cut lines 34. Each end wall outer panel handle 112 is defined by a first transversally extending outer panel handle cut line 114, a pair of angled outer panel 2û handle cut line 116, a pair of first longitudinally extending outer panel handle cut line 118 a pair of second transversally extending outer panel handle cut line 120, a pair of second longitudinally extending outer panel handle cut line 122 and a transversally extending ~139973 outer panel fold line 124.

Each outer panel handle cut line 114 is typically located at a distance from a proximal outer panel fold line 26 which cu,~ .ùlld~ to dlJplVAilll ' Iy two-thirds of the 5 distance between a proximal outer panel fold line 26 and a proximal ledge fold line 32.
The length of the outer panel handle cut line 114 is typically sized so as to slightly exceed the width of an average human hand.

Each angled outer panel handle 116 connects at one of its end to an end portion lO of an adjacent transversally extending outer panel handle cut line 114. The angled outer panel handles 116 typically extend over a length which cc."c,~ ld~ d~J~IoAilll~ ily to three tents of the length of a proximal outer panel handle cut line 114. The angled outer panel handles 116 extend sul-:,kl" 'Iy at 45 degrees relatively to a proximal outer panel handle cut line 114. The angled outer panel handles 116 are generally outwardly oriented.

Each longitudinally extending outer panel handle cut line 118 connects with an end segment of a proximal angled outer panel handle cut line 116. The longitudinally extending outer panel handle cut line 118 extends SUb~ dll" '1~,' longitudinally and are generally outwardly oriented. The longitudinally extending outer panel handle cut line 118 20 typically extends over a length of d,U~lUAillld~ly one half of the length of a proximal angled outer panel handle cut line 116. Each longitudinally extending outer panel handle cut line 118 connects with a proximal transversally extending outer panel handle cut line 2139~7~
.
120. Both second transversaliy extending outer panel handle cut line 120 of each outer panel handle 112 extend towards each other. Each second transversally extending outer panel handle cut line 120 connects with a proximal second longitudinally extending outer panel handle cut line 122. A transversally extending outer panel fold line 124 connects 5 at both of its ends with the second longitudinally extending outer panel handle cut lines 122.

An inner panel handle aperture 126 is formed in each inner panel 24. Each inner panel 126 is defined by a pair of longitudinally extending inner panel handle aperture cut lines 128 and a pair of transYersally extending inner panel handle aperture cut lines 130.
The length of the longitudinally extending inner panel handle aperture cut lines 128 is suL~ " 'Iy equal to the length of the transversally extending outer panel fold lines 124.
The length oF the transversally extending inner panel handle apertures 130 is sub~ .'ly equal to the distance between a transversally extending outer panel handle cut line 114 15 and a proximal transversally extending outer panel fold line 124. The inner panel handle apertures 126 are positioned so as to be substantially in register with the end wall outer panel handles 112 when the stackable container 10 is in its erected configuration.

The outer peripheral edge of either the side panel 14 or the side panel 16 is 20 defined by a centrally disposed longitudinally extending side panel peripheral cut line 136, a pair of relatively short and transversally extending side panel peripheral cut line 134 and a pair of longitudinally extending side panel lateral cut lines 132.

213~7~
.
The side panel lateral cut lines 13Z are sub:,ld" 'Iy collinear with the inner panel peripheral top edges 62. The side panel lateral cut lines 132 and the inner panel peripheral top edges 62 are separated sy" ""~,', i.,..''y from each other by an i" ~ il ,9 inner panel fold line 28. Each side panel lateral cut line 132 extends from an inner panel fold line 28 to a proximal transversally extending side panel cut line 134.
Each side panel lateral cut line 132 has a length which ~,u,, ~S~OI ,cls suba~dl ~ y to the distance between a ledge fold line 32 and a ledge outer peripheral edge 64. Each side panel lateral cut line 132 connects with a proximal transversally extending side panel 0 cut line 134. Each transversally extending side panel cut line 134 extends subaldllli~l'y outwardly from a proximal side panel lateral cut line 132 to a longitudinally extending side panel peripheral cut line 136. Each transversally extending side panel cut line 134 has a length which co" ~ Ollda suL~ld~ lliwly to one half of an inner panel locking tongue cut line 84. Each transversally extending side panel cut line 134 connects with a longitudinally extending side panel peripheral cut line 136. Each longitudinally extending side panel peripheral cut line 136 connects with a transversally extending side panel cut line 134 at each one of its ends.
The side panel 14 has a removable section 138. The removable section 138 is delimited by a pair of inwardly converging removable section angled cutout lines 140 and a longitudinally extending removable section cutout line 142. Each removable section angled cutout line 140 extends from a proximal longitudinally extending side panel 2i3~973 peripheral cut line 136. The removable section angled cutout lines 140 are in an inwardly converging l~ld~iO~ relatively to one another. The removable section angled cutout lines 140 each connects with the longitudinally extending removable section cutout line 142.

The construction of the stackable container 10 in its erected configuration E is initiated by folding the side panels 14 and 16 upwardly and inwardly about their side wall fold lines 18.

o Concurrently or ulteriorly the end wall inner panels 24 are folded upwardly and inwardly about their inner panel fold lines 28.

As illustrated in figure 4 one of the end walls inner panel denoted by the reference numeral 24 is folded slightly before the other end wail inner panel 24 so as to be inwardly positioned relatively to the end wall inner panel 24. The side pan~ls 14 16 and the end wall inner panels 24 are folded upwardly so as to lie in a sui,~ld"~i. ,r pe,yt",di~ ular ~ldliOIlsl,i~, relatively to the base wall 12.

When both proximal end wall inner panels 24 and 24 are in a sui, ,~d~ lly j e",t:" ii~.ular l~:ldtil:\l 1~l li,~J relatively to the base wall 12 the end wall inner panels 24 and 24 overlap each other and a portion of the outer surface of the end wall inner panel 24 lies in an abutting ,~ with a portion of the inner surface of the end wall inner panel 24.

In this erected position, the end wall inner panel locking tongue 80 of the end wall inner panel 24 is in register with the end wall inner panel locking tongue 78 of the end 5 wall inner panel 24'. Similarly, the end wall inner panel locking tongue 78 of the end wall inner panel 24 is in register with the end wall inner panel locking tongue 80 of the end wall inner panel 24'.

In the erected position, the respective inner panel handle apertures 126 of the end o wall inner panels 24 and 24' are also in register with one another, Furthermore, the inner panel bottom apertures 90 of each end wall inner panel 24 are each in register with a co~ ,on.li"~ end and bottom aperture 96. The inner panel bottom apertures 90 and the bottom aperture 96 thus def ne vent apertures which extend through the peripheral edges of the stackable container 10 adjacent its bottom wall 12. These vent apertures are totally 15 unobstructed since the longitudinally extending inner panel lower cut lines 88 are spaced from the bottom wall 12. The vent apertures defined by the inner panel bottom apertures 90 and the bottom aperture 96 can also be used as will be l~e,t:i"drLt:r described to solidify the " ' ' l~ between a pair of stackable ..ollldill~l ~12 as illustrated in figure 2.

The construction of the stackable container 10 is continued by folding the end wall outer panels 22 upwardly and inwardly along the outer panel fold lines 26. The end wall outer panels 22 are folded until they are in a SUb~dl 1' 'Iy p~",~"di~,ular, t:ld~iùl1sl~ip with the bottom wall 12. In this erected configuration, the inner surface of the end wall outer panels 22 is in an abutting I~ tiol,~ with the outer surface of the outermost end wall inner panel 24. Also, in this erected configuration, each end wall outer panel locking 5 tongue 104 is in register with an end wall inner panel locking tongue 78 and an end wall inner panel locking tongue 80. Furthermore, the end wall outer panel 112 is in register with a pair of inner panel handle apertures 126.

The next construction step consists in folding forwardly and d~ , ;. .lly the ledge 10 sections 30 and the ~S.co-i,.l~.d integrally extending locking flaps 66. The ledge sections 30 are folded forwardly until their outer peripheral ends lie in an abutting, ~IdliUl 1~l li,lJ with the proximal longitudinally extending side panel lateral cut lines 32. In this position, the ledge sections 30 extend towards each other and lie in a geol "~I, ical plane SUb~ldl lli~lly parallel to the bottom wall 12.

The folding of the peripheral sections 30 creates a ledge section aperture 110 delimited by the transversally extending outer panel locking tongue cut lines 106, the longitudinally extending outer panel locking cut lines 108, the now transversally extending outer panel locking tongue cut lines 106 dnd the longitudinally extending outer panel 2û locking cut lines 108.

As the ledge sections 30 are being folded, the transversally extending outer panel 2139~73 locking tongue cut lines 106 and the longitudinally extending outer panel locking cut lines 108 override the perpendicularly extending end wall outer panel locking tongues 104, the end wall inner panel locking tongues 78 and the end wall inner panel locking tongues 80.
When the ledge sections 30 are fully folded, the transversally extending outer panel 5 locking tongue cut lines 106 and the longitudinally extending outer panel locking cut lines 108 snappingly lock the perpendicularly extending end wall outer panel locking tongues 104, the end wall inner panel locking tongues 78 and the end wall inner panel locking tongues 80 together.

The next step in the construction of the stackable container 10 consists in folding the locking flaps 66 d~... ,.. dly and inwardly about the locking flap fold lines 68. The locking flaps 66 are folded until their inner surfaces abuttingly contacts the outer surface of the side walls 14 and 16. Figure 5 illustrates a section of a stackable container 10 with one of its locking flaps 66 in a partially folded configuration.

The locking flaps 66 being folded, the next step consists in folding the locking tongues 46 so as to insert the distal end of the locking tongues 46 defined by an end wall cut line third segment 40 into a proximal cutout opening 56. The locking tongues 46 are bended simultaneously about their locking tongue first fold line 48 and their locking 20 tongue second fold line 50 while the distal end of the locking tongue is po:.iliol~ed in register with a proximal cutout opening 56. The distal end of the locking tongue 46 is then pushed into the proximal cutout opening 56 until the segments of the locking tongue 46 ~ 213997~
positioned between the locking tongue first fold line 48 and the locking tongue second fold line 50 abuttingly abuts against a proximal locking flap 66. The locking tongue 46 is then bended about the locking tongue third fold line 52 which is pushed inwardly until the segment of the locking tongue 46 which extends between the locking tongue second fold line 50 and the locking tongue third fold line 52 overrides the cutout opening 56 and the distal end of the locking tongue 46 is inserted into the cutout opening 54.
Figure 5 also illustrates a locking tongue 46 about to be inserted into a proximal cutout opening 56. Figure 5 further illustrates the .,i"g of a cutout opening 54relatively to the cutout opening 56 when the stackable container 10 in its erected configuration .
Referring now more ~,ue~.iri. .: ) to figure 6 the locking tongue 46 is shown in its locked configuration wherein its distal end is inserted into the cutout opening 54 and wherein the segment of the locking tongue 46 which extends between the locking tongue first fold line 48 and the locking tongue second fold line 50 overrides a proximal locking flap 66 and thus locks the latter in its folded configuration. By locking the locking flap 66 in its folded configuration, the locking tongue 46 prevents the integrally extending ledge section 30 from being pivoted rearwardly and thus prevents the s~,~)d~d~iUII of the pt:" t:~di. ularly extending end wall outer panel locking tongues 104, the end wall inner panel locking tongues 78 and the end wall inner panel locking tongues 80. In turn since the p~",t,l,.li~ularly extending end wall outer panel locking tongues 104 the end wall ~ 213997~
inner panel locking tongues 78 and the end wall inner panel locking tongues 80 respectively extend integrally from an end wall outer panel 22 and a pair of end wall inner panels 24, these panels are kept together in an abutting, ~IdLiol l~l ,i,u with one another and in a pel,u~"di~ular l~ldt;~ ,ll;p relatively to the bottom wall 12. As I~ t,i,lb~tu,e: pointed out, each end wall 2û is thus of compositQ construction, being formed of an end wall outer panel 22 and a pair of end wall inner panels 24.
In order to complete the construction of the stackable container 10, the end wall outer panel handles 112 are folded upwardly and inwardly about their transversally 1û extending outer panel fold lines 124. The end wall outer panel handle 112 is folded about its transversally extending outer panel fold line 124 until it reaches a position wherein it lies in a ~eo" ,~,', i-,al plane Su~alal l~ y parallel to the bottom wall 1 2.The end wall outer panel handles 112 are pushed inwardly through the adjacent inner panel handle apertures 126. When the end wall outer panel handle 112 is folded inwardly through the inner panel handle aperture 126, the longitudinally extending outer panel handle cut line 118 and the proximal angled outer panel cut line 116 are lt:lll,UOldlily bended in order to clear the transversally extending inner panel handle apertures 130 of the adjacent inner panel handle apertures 126. Once the longitudinally extending outer panel handle cut line 118 and the proximal angled outer panel cut line 116 have cleared the transversally extending inner panel handle apertures 130 of the adjacent inner panel handle apertures 126, the second transversally extending outer panel handle cut line 120 of the end wall outer panel handle 112 lockingly abuts against the inner surface of the innermost end wall inner panel ~ 213g97~
24. The second transversally extending outer panel handle cut line 120 thus further contribute to keeping the end wall outer panel 22 and the end wall inner panels 24 in a locked abutting rt:ldliUI lal ~iy relatively to one another.

The stackable container 10 thus provides for a sturdy construction having triple layered end walls 20 made of composite construction. The end wall outer panel 22 and each pair of co"t~ .ondi"y end wall inner panels 24 making up an end wall 20 are kept in an abutting rt~ldliO~ with one another by three locking means namely the COI I ILi" 'i~ of the ledge aperture 110 with the perpendicularly extending end wall outer o panel locking tongues 104, the end wall inner panel locking tongues 78 and the end wall inner panel locking tongues 80 the c~" Ibi, IdliUI I of the locking tongue 46 with the locking flaps 66, and the CUIIIIJ;II ~ of the second transversally extending outer panel handle cut line 120 with the inner surface of the innermost end wall inner panel 24.

The stackable container 10 is further solidified in its erected configuration by the fact that it is designed so that the corrugation lines of the end wall inner panels 24 and of the side walls 14, 16 are all perpendicular to the bottom wall 12. The corrugation lines being p~".~"di~ular to the bottom wall 12 the end wall inner panels 24 and the side walls 14, 16 are better adapted to support a load imparted on them in a direction pe, ~ , "~i. ular to the bottom wall 12 as for example when a set of stackable Collldi"~,:, 10 are stacked one on top of the other. In other words the stackable cu"~ 10 are thus better adapted to extend a stress imparted on them which is suL~ld"li..:'y perut:, Idi~.ular to the 2139~7~
bottom wall 12.

In use, the stackable containers 10 are particularly well adapted to being stacked one on top of the other as illustrated in figure 2. When a pair of stackable ~ dil 1~1~ 10 5 are stacked one on top of the other the end and bottom panel apertures 96 of the uppermost stackable container 10 are positioned in register with the p~".~l,.lkularly extending end wall outer panel locking tongues 104, the end wall inner panel locking tongue 78 and the end wall inner panel locking tongue 80 of the lor,~.",oaL stackable container 10. The u,,,L,i, ~ti~,l, of the end and bottom panel apertures 96 with the 0 p~".~l,.li~ularly extending end wall outer panel locking tongues 104, the end wall inner panel locking tongue 78 and the end wall inner panel locking tongue 80 acts as a stabilizing means for a stack of stackable containers 10.

In situations wherein the stackable containers 10 are to be used on display 15 shelves, the removable section 138 can be readily removed in order to show the content of the stackable container 10. The removable section 138 is removed by pulling on the latter until the removable section 138 tears-off along the removable section angled cutout lines 140 and the longitudinally extending removable section cutout lines 142. Because of the sturdy of the end walls 20 the stackable containers 10 are adapted to be stacked 20 one on top of the other without undue stress on the stackable c~,, ILail It:la 10 even if the removable section 138 is removed. Thus the stackable containers 10 can be stacked one on top of the other with their removable section 138 removed, offering an elegant solution wherein stackable display box are needed.

Claims (13)

1. A carton blank for forming a stackable container, said carton blank comprising:
- a generally rectangular bottom wall (12) having opposite bottom wall side edges and opposite bottom wall end edges, - a pair of side walls (14 and 16) hingely connected with said bottom wall side edges by a pair of side wall fold lines (18), each one of said side walls having:
- a first side wall side edge connected with said bottom wall (12) by said side wall fold line (18), - a second side wall side edge located opposite said first side wall side edge and, - a pair of opposite side wall end edges, each side wall end edge connecting substantially perpendicularly with said first side wall side edge and said second side wall side edge, - a pair of end wall outer panels (22) hingely connected with said bottom wall end edges by a pair of outer panel fold lines (26), each one of said end wall outer panels (22) having:
- a first end wall outer panel end edge connected with one of said bottom wall end edges by one of said outer panel fold lines (26), - a second end wall outer panel end edge located opposite said first end wall outer panel end edge and, - a pair of opposite end wall outer panel side edges, said end wall outer panel end edges connecting substantially perpendicularly with said first end wall outer panel end edge and said second end wall outer panel end edge, - a pair of end wall inner panels (24) hingely connected to each side wall (14 and 16) along said side wall end edges by a pair of end wall inner panel fold lines (28), each one of said end wall inner panels (24) having - a first end wall inner panel end edges connected with one of said side walls (14 and 16) by one of said fold lines (28), - a second end wall inner panel end edge located opposite said first end wall inner panel end edge and, - a pair of opposite end wall inner panel side edges, each one of said end wall inner panel side edges connecting substantially perpendicularly with said first end panel end edge and said second end panel end edge, - a pair of locking tongues (46) hingely connected with each one of said end wall outer panels (22) along a segment of said opposite side wall end edges by a locking tongue first fold line (48), each one of said locking tongues (46) having:
- a first locking tongue side edge connected with one of said end wall outer panels (22) by one of said locking tongue first fold line (48), - a second locking tongue side edge located opposite said first locking tongue side edge and, - a pair of opposite locking tongue end edges, said locking tongue end edges, each locking tongue end edge connecting substantially perpendicularly with both said first locking tongue side edge and said second locking tongue side edge, each one of said locking tongues (46) being spaced from a proximal outer panel fold line (26) by a locking tongue spacing distance, each one of said locking tongues (46) having a locking tongue spacing distance corresponding substantially to the distance between said first locking tongue side edge and said second locking tongue side edge, - an end wall inner panel cutout opening (54) extending through each one of said end wall inner panels (24) adjacent said end wall inner panel fold line (28), said end wall inner panel cutout openings (54) being spaced from a proximal side wall fold line (18) by an end wall inner panel cutout opening spacing distance which corresponds substantially to said locking tongue spacing distance, said end wall inner panel cutout opening being configured and sized to receive a proximal second locking tongue side edge, - a pair of side panel cutout openings (56) extending through each side panel (14) and 16), each one of said side panel cutout openings (56) being spaced from a proximal inner panel fold line (28) by a side panel cutout opening first spacing distance which corresponds substantially to one half of said locking tongue length, each one of said side panel cutout openings (56) being spaced from a proximal side wall fold line (18) by a side panel cutout opening second spacing distance which corresponds substantially to said end wall inner panel cutout opening spacing distance. each one of said side panel cutout openings (56) being configured and sized to receive one of said locking tongues (46).
2. A carton blank as recited in Claim 1 further comprising:
- a pair of ledge sections (30), each one of said ledge sections (30) being hingely connected with one of said end wall outer panel (22) along said second end wall outer panel end edge by a ledge fold line (32), each one of said ledge sections having:
- a first ledge section end edge connected with one of said end wall outer panel (22) by said ledge fold lines (32), - a second ledge section end edge located opposite said first ledge section end edge, - a pair of opposite ledge section side edges, said ledge section side edges connecting substantially perpendicularly with said first ledge section end edge and said second ledge section end edge, - a pair of locking flaps (66) hingely connected with each one of said ledge sections (30) along one of said opposite ledge section side edges by a locking flap fold line (68), each one of said locking flaps (66) having - a first locking flap side edge connected with one of said ledge section side edges by one of said locking flap fold line (68), - a second locking flap side edge located opposite said first locking flap side edge, - a pair of opposite locking flap end edges, both locking flap end edges connecting with said first locking flap side edge and said second locking flap side edge.
3. A carton blank as recited in Claim 1 further comprising:
- an outer panel handle aperture extending through each of said outer panels (22), -an inner panel handle aperture (126) formed in each of said inner panels, said inner panel apertures being positioned so as to be substantially in register with one of said outer panel apertures when said stackable container is in an erected configuration.
4. A carton blank as recited in Claim 3 wherein each of said panel handle apertures is substantially centrally located relatively to a pair of adjacent end wall cut lines (34), each of said outer panel handle aperture being defined by a first transversally extending outer panel handle cut line (114), a pair of angled outer panel handle cut line (116), a pair of first longitudinally extending outer panel handle cut line (118), a pair of second transversally extending outer panel handle cut line (120), a pair of second longitudinally extending outer panel handle cut line (122) and a transversally extending outer panel fold line (124), each of said outer panel handle cut lines (114) being typically located at a distance from a proximal outer panel fold line (26) which corresponds to approximately two-thirds of the distance between said proximal outer panel fold line (26) and a proximal ledge fold line (32), the length of the outer panel handle cut line (114) being typically sized so as to slightly exceed the width of an average human hand, each of said angled outer panel handle (116) connecting at one of its end to an end portion of an adjacent transversally extending outer panel handle cut line (114), said angled outer panel handles (116) typically extending over a length which corresponds approximately to three tents of the length of a proximal outer panel handle cut line (114), said angled outer panel handles (116) extending substantially at 45 degrees relatively to a proximal outer panel handle cut line (114), said angled outer panel handles (116) being generally outwardly oriented, each of said longitudinally extending outer panel handle cut lines (118) connecting with an end segment of a proximal angled outer panel handle cut line (116), said longitudinally extending outer panel handle cut lines (118) extending substantially longitudinally and being generally outwardly oriented, said longitudinally extending outer panel handle cut line (118) typically extending over a length of approximately one half of the length of a proximal angled outer panel handle cut line (116), each of said longitudinally extending outer panel handle cut lines (118) connecting with a proximal transversally extending outer panel handle cut line (120), both of said second transversally extending outer panel handle cut lines (120) of each one of saidouter panel handles (112) extending towards each other, each of said second transversally extending outer panel handle cut lines (120) connecting with one of said proximal second longitudinally extending outer panel handle cut lines (122), a transversally extending outer panel fold line (124) connecting at both of its ends with said second longitudinally extending outer panel handle cut lines (122), each of said inner panel handle apertures (126) is being defined by a pair of longitudinally extending inner panel handle aperture cut lines (128) and a pair of transversally extending inner panel handle aperture cut lines (130), the length of said longitudinally extending inner panel handle aperture cut lines (128) being substantially equal to the length of said transversally extending outer panel fold lines (124), the length of said transversally extending inner panel handle apertures (130) being substantially equal to the distance between one of said transversally extending outer panel handle cut lines (114) and a proximal transversally extending outer panel fold line (124).
5. A carton blank as recited in Claim 1 further comprising:
an inner panel bottom aperture (90) extending through each of said inner panels (24), said inner panel bottom apertures (90) being formed adjacent a proximal end wall cut line first segment (36), substantially halfway between a proximal inner panel fold line (28) and a proximal end wall cut line second segment (38).
6. A carton blank as recited in Claim 5 wherein, each of said inner panel bottom apertures (90) is defined by a longitudinally extending inner panel bottom aperture cut line (92) and a pair of transversally extending inner panel bottom aperture cut lines (94), said longitudinally extending inner panel bottom aperture cut lines (92) being outwardly offset relatively to said proximal end wall cut line first segment (36), said transversally extending inner panel bottom aperture cut lines (94) extending from said proximal end wall cut line first segment (36) to a proximal longitudinally extending inner panel bottom aperture cut line (92).
7. A carton blank as recited in Claim 1 further comprising:
a pair of end and bottom panel apertures (96) extending through each of said end wall outer panels (22) and said bottom wall (12) along each outer panel fold lines (26).
8. A carton blank as recited in Claim 7 wherein, each of said end and bottom panel apertures (96) is defined by a first transversally extending end and bottom aperture cut lines (98), a second transversally extending end and bottom aperture cut lines (100) and a corresponding pair of longitudinally extending end and bottom aperture cut lines (102).
9. A carton blank as recited in Claim 8 wherein, said first transversally extending end and bottom aperture cut lines (98) is formed in said bottom wall (12) while said second transversally extending end and bottom aperture cut lines (100) are formed in said end wall outert panels (22) said first transversally extending end and bottom aperture cut lines (98) and said second transversally extending end and bottom aperture cut lines (100) being substantially equally spaced relatively to said outer panel fold lines (26), said longitudinally extending end and bottom aperture cut lines (102) connecting said first transversally extending end and bottom aperture cut lines (98) and said second transversally extending end and bottom aperture cut lines (100) at both ends thereof, said length of said longitudinally extending end and bottom aperture cut lines 102 being approximately twice the length of said proximal transversally extending inner panel bottom aperture cut line (94).
10. A carton blank as recited in Claim 1 further comprising:
a pair of end wall outer panel locking tongues (104) extend integrally from each said end wall outer panels (22) along said proximal ledge fold line (32), said end wall outer panel locking tongues (104) being formed by a corresponding pair of transversally extending outer panel locking tongue cut lines (106) and corresponding longitudinally extending outer panel locking tongue cut lines (108).
11. A carton blank as recited in Claim 1 further comprising:
an end wall inner panel second edge, said an end wall inner panel second edge being defined by an inner panel peripheral top edge (62) and a first integrally extending end wall inner panel locking tongue (78) and a second integrally extending end wall inner panel locking tongue (80).
12. A carton blank as recited in Claim 1 further comprising:
a removable section (138), said removable section (138) bveing formed in said side panel (140), said removable section (138) being delimited by a pair of inwardly converging removable section angled cutout lines (140) and a longitudinally extending removable section cutout line (142) each of said removable section angled cutout line (140) extending from a proximal longitudinally extending side panel peripheral cut line (136) said removable section angled cutout lines (140) being in an inwardly converging relationship relatively to one another, said removable section angled cutout lines (140) each connecting with said longitudinally extending removable section cutout line (142).
13. A carton formed from a carton blank, said carton comprising:
- a generally rectangular bottom wall (12) having opposite bottom wall side edges and opposite bottom wall end edges, - a pair of side walls (14 and 16) hingely connected with said bottom wall side edges by a pair of side wall fold lines (18), each one of said side walls having:
- a first side wall side edge connected with said bottom wall (12) by said side wall fold line (18), - a second side wall side edge located opposite said first side wall side edge and, - a pair of opposite side wall end edges, each side wall end edge connecting substantially perpendicularly with said first side wall side edge and said second side wall side edge, - a pair of end wall outer panels (22) hingely connected with said bottom wall end edges by a pair of outer panel fold lines (26), each one of said end wall outer panels (22) having:
- a first end wall outer panel end edge connected with one of said bottom wall end edges by one of said outer panel fold lines (26), - a second end wall outer panel end edge located opposite said first end wall outer panel end edge and, - a pair of opposite end wall outer panel side edges, said end wall outer panel end edges connecting substantially perpendicularly with said first end wall outer panel end edge and said second end wall outer panel end edge, - a pair of end wall inner panels (24) hingely connected to each side wall (14 and 16) along said side wall end edges by a pair of end wall inner panel fold lines (28), each one of said end wall inner panels (24) having - a first end wall inner panel end edges connected with one of said side walls (14 and 16) by one of said fold lines (28), - a second end wall inner panel end edge located opposite said first end wall inner panel end edge and, - a pair of opposite end wall inner panel side edges, each one of said end wall inner panel side edges connecting substantially perpendicularly with said first end panel end edge and said second end panel end edge, - a pair of locking tongues (46) hingely connected with each one of said end wall outer panels (22) along a segment of said opposite side wall end edges by a locking tongue first fold line (48), each one of said locking tongues (46) having:
- a first locking tongue side edge connected with one of said end wall outer panels (22) by one of said locking tongue first fold line (48), - a second locking tongue side edge located opposite said first locking tongue side edge and, - a pair of opposite locking tongue end edges, said locking tongue end edges, each locking tongue end edge connecting substantially perpendicularly with both said first locking tongue side edge and said second locking tongue side edge, each one of said locking tongues (46) being spaced from a proximal outer panel fold line (26) by a locking tongue spacing distance, each one of said locking tongues (46) having a locking tongue spacing distance corresponding substantially to the distance between said first locking tongue side edge and said second locking tongue side edge, - an end wall inner panel cutout opening (54) extending through each one of said end wall inner panels (24) adjacent said end wall inner panel fold line (28), said end wall inner panel cutout openings (54) being spaced from a proximal side wall fold line (18) by an end wall inner panel cutout opening spacing distance which corresponds substantially to said locking tongue spacing distance, said end wall inner panel cutout opening being configured and sized to receive a proximal second locking tongue side edge, - a pair of side panel cutout openings (56) extending through each side panel (14) and 16), each one of said side panel cutout openings (56) being spaced from a proximal inner panel fold line (28) by a side panel cutout opening first spacing distance which corresponds substantially to one half of said locking tongue length, each one of said side panel cutout openings (56) being spaced from a proximal side wall fold line (18) by a side panel cutout opening second spacing distance which corresponds substantially to said end wall inner panel cutout opening spacing distance? each one of said side panel cutout openings (56) being configured and sized to receive one of said locking tongues (46), said side walls (14 and 16) being disposed substantially perpendicularly to said bottom wall (12), said end wall outer panels (22) and said end wall inner panels (24) collaborating for forming a pair of composite end walls (20), said composite end walls (20) being disposed substantially perpendicularly to said bottom wall (12) and to said side walls (14 and 16), said locking tongues (46) being insertted in said end wall inner panel cutout openings and said side panel cutout openings (56) for releasably locking said end wall outer panels (22) and said end wall inner panels (24) forming said composite end walls (20) together.
CA002139973A 1995-01-11 1995-01-11 Stackable container Abandoned CA2139973A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CA002139973A CA2139973A1 (en) 1995-01-11 1995-01-11 Stackable container

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA002139973A CA2139973A1 (en) 1995-01-11 1995-01-11 Stackable container

Publications (1)

Publication Number Publication Date
CA2139973A1 true CA2139973A1 (en) 1996-07-12

Family

ID=4155024

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002139973A Abandoned CA2139973A1 (en) 1995-01-11 1995-01-11 Stackable container

Country Status (1)

Country Link
CA (1) CA2139973A1 (en)

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Legal Events

Date Code Title Description
FZDE Discontinued