EP0304224A2 - Caisses permettant leur empilement interverrouillé - Google Patents
Caisses permettant leur empilement interverrouillé Download PDFInfo
- Publication number
- EP0304224A2 EP0304224A2 EP88307422A EP88307422A EP0304224A2 EP 0304224 A2 EP0304224 A2 EP 0304224A2 EP 88307422 A EP88307422 A EP 88307422A EP 88307422 A EP88307422 A EP 88307422A EP 0304224 A2 EP0304224 A2 EP 0304224A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- crate
- projections
- crates
- side walls
- notches
- 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.)
- Withdrawn
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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
- B65D21/0235—Containers stackable in a staggered configuration
Definitions
- the present invention concerns crates for the transport of goods such as agricultural products, bottles, and the like, and more particularly such crates provided with mutual interlocking means to safeguard against lateral sliding of one layer of crates relative to an underlying or overlying layer when the crates are piled in superimposed position.
- Piling of crates may be either in a fully overlapping relative position whereby the bottom of one overlying crate rests on, and is received by, the upper rim of an underlying crate, or in a partly overlapping fashion known in the art as "bonded brick-stacking".
- the downward depending bottom rim is substantially stronger than the upper rim, forming actually an extension of the crate bottom.
- the upper rim is inherently weaker and fully depends on the profile measurements and the strength of the material of which it is made. Now, since a uniform wall width is always kept when plastic injection molding is employed, the upper rim width, determined by strength considerations, dictates the measurements of the remaining crate portions. This entails a considerably waste of material.
- both the lower and the upper rims are of substantially the same reduced strength, i.e. of inherently insufficient mechanical resistance to bending when substantial lateral forces are applied. Such forces are likely to appear during transportation of the stacked crates, in whatever configuration or relationship, when the transporting vehicle jerks or stops abruptly. Accordingly, again a crate of a substantial weight must be produced, and, in fact, commercially available crates weigh as much as 1.4 Kg.
- interlocking means will act not only in a direction perpendicular to the direction of the lateral forces, but also in a direction parallel to such force or forces.
- the invention is particularly useful in relation to collapsible crates in terms of saving special and costly strengthening of the lower and/or of the upper rims; in this context, and according to another aspect of the invention, it is proposed to provide the bottom rim, at its inside, with tapering or funnel-shaped cavities into which complementary profiled extensions or projections formed in the bottom wall of the crate -- which is to be assembled to erect the crate -- so that the combined effect of the extension and cavity is to tighten the sidewalls against the bottom wall under the weight to which the bottom wall is subjected.
- the greater the weight the more closely will the bottom wall become tighened against its frame, on the one hand, and on the other hand the assembly of the crates by the insertion of the bottom wall thereinto is greatly facilitated compared with other, conventional arrangements.
- an open-top crate for palletizing particularly in a bonded brick-stacking relationship, comprising a rectangular bottom, two long side walls and two short side walls, an upper rim extending around the open top and a lower rim extending around the bottom of the crate, the rims being configured to become received one within the other when the crates are in an overlapping stacked position, characterized by a series of notches formed in one of the said rims; a series of lateral projections formed in the other of the rims; and the distances between the said notches and the distances between the said projections, respectively, being such that the crates are adapted to be piled either in an overlapping relationship whereby all projections of an overlaying crate become received by respective notches of an underlying crate, or in a non-overlapping, brick-stacking relationship, whereby at least one of at least two adjacent sides of each one of the projections of every overlying crate
- the crate is foldable with hinged side walls and a separate bottom, at least two opposite side walls are provided with tapered sockets, and the bottom wall is provided with downward projecting tongnes adapted to fit into the said sockets and inpair an inward directed force when the bottom is loaded.
- Fig. 1 illustrates the arrangement of crates generally indicated A piled-up for transportation of a pallet B.
- the arrangement of crates A in a pattern of "four plus three" in such a non-overlapping arrangement -- is known in the art as "the bonded brick-stacking" relationship. While the crates A are shown as being of solid, plastic injection structure, this arrangement applies as well to the collapsible design of crates as will be described in more detail below.
- the crates are rectangular having short side walls C, long side walls B and a bottom wall or platform E.
- each crate has an upward directed rim F associated with its respective side wall and surrounding the open top of the crate.
- the rim consists of a projecting rib whose outer surface coincides with the outer surface of the respective side wall.
- a shoulder G is formed inside and all along the rim F.
- the upper rim F is discontinued by a plurality of notches, cutouts or recesses II, preferably with convergent sides H1 and H2.
- Similar notches H′ i.e. of an inverted trapezoid shape, are formed at the four corners of the upper rim F.
- the spacing of the notches H is determined according to certain considerations which will be explained further below.
- two equidistant notches are formed in the rim of the long side walls D and one, centrally-located notch H is formed in the rim associated with the short side wall C.
- an elongated, downward projecting rim I is provided, however somewhat distanced from the plane defined by the respective outer surface of the crate of side wall.
- the rim I is provided with sidewise directed projections J, of an outer profile corresponding to the profile of the notches H, and in vertical alignment therewith.
- the rims I are discontinued at the corners of the bottom forming spaces K, as shown.
- a second factor is introduced according to the design proposed by the present invention, namely, the resistance of the two projections J seated within the respective notches H along the long side D of the crate, i.e. in a direction parallel to the applied forces.
- the projections -- or the intermediate ribs F -- must in fact become torn off depending on the relative strengths of these components, before relative displacement of the crates can take place.
- the interlocking means will act not only in the direction perpendicular to the applied thrust or lateral forces (along the short sides of the crate) but also parallel to the forces, namely along the long sides of the crates.
- the invention is particularly useful in connection with collapsible or foldable crates.
- Foldable crates are generally known -- e.g. U.S. Patent No. 4,491,231.
- the design of the projection J associated with the lower rim I is advantageously formed in the manner to be described in more detail below, such design being facilitated by separate production of each of the long side wall and of the short side walls by plastic injection molding.
- the short side wall C of the crate mainly comprises a pattern of honeycomb profile denoted 10. This pattern was selected not only for its strength, but also because it is less prone to the accumulation of dirt at its corners, which are mostly of obtuse angles.
- the projection J consists of a cavity 14 defined within outward projecting ribs 16a and 16b, directed at an angle with respect to each other, to form the tapering or oblique configuration of the projection J, and a bottom rib 18.
- An array of hinge support ears 22 is provided at both sides of the wall for cooperation with hinge rods 24 (Fig. 2).
- Opening 26 is left the honeycomb pattern 10 to serve as a handle for the assembled crate.
- a pair of socket-like projections 30 comprising a T-shaped profile 32 (Fig.13) which defines a pair of pocket-like spaces 34 at both its sides.
- Wall 36 at the front side of the socket 30 extends at an acute angle with respect to the vertical.
- the function of the sockets 30 formed at the long side wall, and the respective profiled sections 44 formed at the bottom wall, is to provide self-locking, self-tightening engaging means between the bottom wall and the long side walls.
- the extensions 44 with the associated portions of the rib 40 are inserted into the pockets 30, and rest against the tapering wall section 36.
- This arrangement is advantageous in the following two respects: First, there is enough freedom for the positioning of the protrusions 44 into the sockets 30, even in the case -- as frequently happens -- that the side wall is somewhat distorted and thus does not follow an exact straight plane; secondly, the more force or weight applied to the bottom as a whole -- the greater will be the force that attracts the respective side wall bottom portions against the edge of the bottom wall, due to the inclined direction of the socket wall 36. Therefore, the risk of accidental release of the bottom wall from the side walls is greately reduced.
- Fig. 21 shows the crate in its folded-down position; it is self-explanatory and need not be further described.
- the crate design as so far described features important advantages over the conventional containers of similar type and use.
- the special design of the interlocking means assures safer stacking of the crates in both the overlapping and the non-overlapping configuration, without increasing manufacturing cost.
- the saving of material in the production of crates according to the invention may reach up to 50%, without affecting whatsoever the mechanical strength and load capacity of the crate, all other factors being equal (such as the quality of the plastic material being used).
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Stackable Containers (AREA)
- Rigid Containers With Two Or More Constituent Elements (AREA)
- Containers Having Bodies Formed In One Piece (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IL83575A IL83575A (en) | 1987-08-17 | 1987-08-17 | Crates for piling in an interlocked manner |
IL83575 | 1987-08-17 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0304224A2 true EP0304224A2 (fr) | 1989-02-22 |
EP0304224A3 EP0304224A3 (fr) | 1989-12-20 |
Family
ID=11058090
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP88307422A Withdrawn EP0304224A3 (fr) | 1987-08-17 | 1988-08-11 | Caisses permettant leur empilement interverrouillé |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0304224A3 (fr) |
AU (1) | AU613651B2 (fr) |
IL (1) | IL83575A (fr) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0698558A3 (fr) * | 1994-08-24 | 1997-06-11 | Schoeller Plast Ag | Récipient de transport empilable |
EP0928745A2 (fr) * | 1995-07-26 | 1999-07-14 | McKechnie U.K. Limited | Conteneur repliable empilable |
WO2010098729A1 (fr) * | 2009-02-27 | 2010-09-02 | Ay Kasa Polimer Ambalaj Ve Tasima Sistemleri Sanayi Ticaret A.S. | Mini-conteneur de transport à l'intérieur d'un conteneur de transport |
CN109956133A (zh) * | 2019-03-11 | 2019-07-02 | 湖南省共托物流设备租赁有限公司 | 包装箱 |
CN110844251A (zh) * | 2019-12-04 | 2020-02-28 | 江苏飞力达国际物流股份有限公司 | 柔性周转料箱 |
US11884456B2 (en) | 2020-09-25 | 2024-01-30 | Techtronic Cordless Gp | Tool storage system |
Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3254786A (en) * | 1964-04-29 | 1966-06-07 | John B Melville | Folding carrying case |
US3355054A (en) * | 1966-05-23 | 1967-11-28 | Banner Metals Inc | Stackable-nestable container |
DE1486229A1 (de) * | 1963-08-16 | 1969-04-17 | Theodor Box | Tragekasten aus Kunststoff |
US3568879A (en) * | 1969-03-04 | 1971-03-09 | Theodor Box | Plastic stacking and transport case |
GB1409046A (en) * | 1971-10-13 | 1975-10-08 | Gpg Holdings Ltd | Containers |
AU7616774A (en) * | 1974-01-31 | 1976-06-10 | Viscount Plastic Products Pty. Ltd. | Container |
FR2292631A1 (fr) * | 1974-11-26 | 1976-06-25 | Toulpac Sa | Caissette perfectionnee susceptible d'etre gerbee |
DE2814844A1 (de) * | 1978-04-06 | 1979-10-18 | Jun Henk Reinders | Kunststoff-faltkiste |
US4491231A (en) * | 1983-05-13 | 1985-01-01 | Family Distributors, Inc. | Collapsible case |
-
1987
- 1987-08-17 IL IL83575A patent/IL83575A/xx not_active IP Right Cessation
-
1988
- 1988-07-22 AU AU19788/88A patent/AU613651B2/en not_active Ceased
- 1988-08-11 EP EP88307422A patent/EP0304224A3/fr not_active Withdrawn
Patent Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1486229A1 (de) * | 1963-08-16 | 1969-04-17 | Theodor Box | Tragekasten aus Kunststoff |
US3254786A (en) * | 1964-04-29 | 1966-06-07 | John B Melville | Folding carrying case |
US3355054A (en) * | 1966-05-23 | 1967-11-28 | Banner Metals Inc | Stackable-nestable container |
US3568879A (en) * | 1969-03-04 | 1971-03-09 | Theodor Box | Plastic stacking and transport case |
GB1409046A (en) * | 1971-10-13 | 1975-10-08 | Gpg Holdings Ltd | Containers |
AU7616774A (en) * | 1974-01-31 | 1976-06-10 | Viscount Plastic Products Pty. Ltd. | Container |
FR2292631A1 (fr) * | 1974-11-26 | 1976-06-25 | Toulpac Sa | Caissette perfectionnee susceptible d'etre gerbee |
DE2814844A1 (de) * | 1978-04-06 | 1979-10-18 | Jun Henk Reinders | Kunststoff-faltkiste |
US4491231A (en) * | 1983-05-13 | 1985-01-01 | Family Distributors, Inc. | Collapsible case |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0698558A3 (fr) * | 1994-08-24 | 1997-06-11 | Schoeller Plast Ag | Récipient de transport empilable |
EP0928745A2 (fr) * | 1995-07-26 | 1999-07-14 | McKechnie U.K. Limited | Conteneur repliable empilable |
EP0928745A3 (fr) * | 1995-07-26 | 1999-08-18 | McKechnie U.K. Limited | Conteneur repliable empilable |
WO2010098729A1 (fr) * | 2009-02-27 | 2010-09-02 | Ay Kasa Polimer Ambalaj Ve Tasima Sistemleri Sanayi Ticaret A.S. | Mini-conteneur de transport à l'intérieur d'un conteneur de transport |
CN109956133A (zh) * | 2019-03-11 | 2019-07-02 | 湖南省共托物流设备租赁有限公司 | 包装箱 |
CN110844251A (zh) * | 2019-12-04 | 2020-02-28 | 江苏飞力达国际物流股份有限公司 | 柔性周转料箱 |
US11884456B2 (en) | 2020-09-25 | 2024-01-30 | Techtronic Cordless Gp | Tool storage system |
Also Published As
Publication number | Publication date |
---|---|
EP0304224A3 (fr) | 1989-12-20 |
AU613651B2 (en) | 1991-08-08 |
IL83575A (en) | 1992-06-21 |
IL83575A0 (en) | 1988-01-31 |
AU1978888A (en) | 1989-02-23 |
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Legal Events
Date | Code | Title | Description |
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PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
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AK | Designated contracting states |
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17P | Request for examination filed |
Effective date: 19900426 |
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17Q | First examination report despatched |
Effective date: 19910930 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
18D | Application deemed to be withdrawn |
Effective date: 19920309 |