US3524415A - Plastic shipping tray - Google Patents

Plastic shipping tray Download PDF

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Publication number
US3524415A
US3524415A US3524415DA US3524415A US 3524415 A US3524415 A US 3524415A US 3524415D A US3524415D A US 3524415DA US 3524415 A US3524415 A US 3524415A
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Prior art keywords
tray
shipping
formed
base
ribs
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Albert W Heiman
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Motors Liquidation Co
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Motors Liquidation Co
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS 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
    • B65D19/00Pallets or like platforms, with or without side walls, for supporting loads to be lifted or lowered
    • B65D19/0004Rigid pallets without side walls
    • B65D19/0006Rigid pallets without side walls the load supporting surface being made of a single element
    • B65D19/003Rigid pallets without side walls the load supporting surface being made of a single element forming discontinuous or non-planar contact surfaces
    • B65D19/0032Rigid pallets without side walls the load supporting surface being made of a single element forming discontinuous or non-planar contact surfaces the base surface being made of a single element
    • B65D19/0036Rigid pallets without side walls the load supporting surface being made of a single element forming discontinuous or non-planar contact surfaces the base surface being made of a single element forming discontinuous or non-planar contact surfaces
    • B65D19/004Rigid pallets without side walls the load supporting surface being made of a single element forming discontinuous or non-planar contact surfaces the base surface being made of a single element forming discontinuous or non-planar contact surfaces and each contact surface having a discrete foot-like shape
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS 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
    • B65D71/00Bundles of articles held together by packaging elements for convenience of storage or transport, e.g. portable segregating carrier for plural receptacles such as beer cans or pop bottles; Bales of material
    • B65D71/0088Palletisable loads, i.e. loads intended to be transported by means of a fork-lift truck
    • B65D71/0092Palletisable loads, i.e. loads intended to be transported by means of a fork-lift truck provided with one or more rigid supports, at least one dimension of the supports corresponding to a dimension of the load, e.g. skids
    • B65D71/0096Palletisable loads, i.e. loads intended to be transported by means of a fork-lift truck provided with one or more rigid supports, at least one dimension of the supports corresponding to a dimension of the load, e.g. skids the dimensions of the supports corresponding to the periphery of the load, e.g. pallets
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS 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
    • B65D2519/00Pallets or like platforms, with or without side walls, for supporting loads to be lifted or lowered
    • B65D2519/00004Details relating to pallets
    • B65D2519/00009Materials
    • B65D2519/00014Materials for the load supporting surface
    • B65D2519/00034Plastic
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS 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
    • B65D2519/00Pallets or like platforms, with or without side walls, for supporting loads to be lifted or lowered
    • B65D2519/00004Details relating to pallets
    • B65D2519/00009Materials
    • B65D2519/00049Materials for the base surface
    • B65D2519/00069Plastic
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS 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
    • B65D2519/00Pallets or like platforms, with or without side walls, for supporting loads to be lifted or lowered
    • B65D2519/00004Details relating to pallets
    • B65D2519/00258Overall construction
    • B65D2519/00263Overall construction of the pallet
    • B65D2519/00268Overall construction of the pallet made of one piece
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS 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
    • B65D2519/00Pallets or like platforms, with or without side walls, for supporting loads to be lifted or lowered
    • B65D2519/00004Details relating to pallets
    • B65D2519/00258Overall construction
    • B65D2519/00283Overall construction of the load supporting surface
    • B65D2519/00288Overall construction of the load supporting surface made of one piece
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS 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
    • B65D2519/00Pallets or like platforms, with or without side walls, for supporting loads to be lifted or lowered
    • B65D2519/00004Details relating to pallets
    • B65D2519/00258Overall construction
    • B65D2519/00313Overall construction of the base surface
    • B65D2519/00318Overall construction of the base surface made of one piece
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS 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
    • B65D2519/00Pallets or like platforms, with or without side walls, for supporting loads to be lifted or lowered
    • B65D2519/00004Details relating to pallets
    • B65D2519/00258Overall construction
    • B65D2519/00313Overall construction of the base surface
    • B65D2519/00328Overall construction of the base surface shape of the contact surface of the base
    • B65D2519/00338Overall construction of the base surface shape of the contact surface of the base contact surface having a discrete foot-like shape
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS 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
    • B65D2519/00Pallets or like platforms, with or without side walls, for supporting loads to be lifted or lowered
    • B65D2519/00004Details relating to pallets
    • B65D2519/00736Details
    • B65D2519/008Drainage means
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS 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
    • B65D2519/00Pallets or like platforms, with or without side walls, for supporting loads to be lifted or lowered
    • B65D2519/00004Details relating to pallets
    • B65D2519/00736Details
    • B65D2519/00935Details with special means for nesting or stacking
    • B65D2519/0094Details with special means for nesting or stacking nestable
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS 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
    • B65D2571/00Bundles of articles held together by packaging elements for convenience of storage or transport, e.g. portable segregating carrier for plural receptacles such as beer cans, pop bottles; Bales of material
    • B65D2571/00006Palletisable loads, i.e. loads intended to be transported by means of a fork-lift truck
    • B65D2571/00055Clapping elements, also placed on the side
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS 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
    • B65D2571/00Bundles of articles held together by packaging elements for convenience of storage or transport, e.g. portable segregating carrier for plural receptacles such as beer cans, pop bottles; Bales of material
    • B65D2571/00006Palletisable loads, i.e. loads intended to be transported by means of a fork-lift truck
    • B65D2571/00111Arrangements of lexible binders
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10STECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S108/00Horizontally supported planar surfaces
    • Y10S108/901Synthetic plastic industrial platform, e.g. pallet

Description

United States Patent Inventor Albert W. l-leiman Anderson, Indiana Appl. No. 775,810 Filed Nov. 14, 1968 Patented Aug. 18, 1970 Assignee General Motors Corporation Detroit, Michigan a Corp. of Delaware PLASTIC SHIPPING TRAY 3 Claims, 13 Drawing Figs.

U.S. Cl 108/53, 108/55 Int. Cl B65d 19/38 Field of Search 108/51 to 58 References Cited UNITED STATES PATENTS ,825 2/1964 Johnson 108/51 ,691 6/1965 Leitzel .4 108/58 Primary Examiner Bobby R1 Gay Assistant Examiner- Glenn 0. Finch Attorneys-J. L. Carpenter and E J. Biskup ABSTRACT: A nestable shipping tray formed from a single sheet of plastic material includes a generally rectangular base having an upwardly extending peripheral wall for horizontally restraining a load supported thereon and a series of downwardly extending support legs formed along the longitudinal sides thereof which are arranged to permit four-way entry of a fork lift truck and an unobstructed passageway for longitudinal entry of a lifting platform. Reinforcing means are formed in the base to permit the tray and load to be supported at the edges of the legs and banding ribs are formed on the wall to locate and retain banding means used to fasten the load to the base. In storage. stacking lugs formed on the wall limit wedging between the support legs of the nested trays thereby facilitating easy separation ofthe trays for reuse.

Patented Aug. 18, 1970 3,524,415

I N VEN TOR.

[ff/ amen ATTORNEY Patented Aug. 18, 1910 3,524,415

, Mm z/mm ATTORNE V PLASTIC SHIPPING TRAY Shipping trays are material handling devices used in the transporting of storage and shipping containers. These trays typically include a marginal rim for horizontally retaining the container and are provided with spaced support members which facilitate entry for the forks of a lift truck in order that the tray and shipping container can be conveniently moved as a unit to a desired location. However, all of the known cornmercially available shipping trays require a central support structure to adequately carry the weight ofa loaded container. In many designs, the central support structure carries approximately fifty percent (50%) of the load.

The use of such trays, therefore, is limited to stacking and storing operations wherein the center as well as the edges of the tray are supported on a planar surface. Otherwise, the trays must be placed on slave pallets with a consequent increase in the costs of material handling. Similarly, these designs have an added disadvantage of not being directly usable in automated storage and retrieval systems of the type using only longitudinal side supports. Additionally, it has been found that in a large number of instances the central support structure is damaged or pierced by the forks of the lift trucks thereby greatly reducing the required center support strength and ruining the tray for further usage. Moreover, it has been found that the forks tend to shear or otherwise damage the exposed bands customarily used to retain the container on the tray thereby increasing the possibility that the components may separate during shipment.

The present invention contemplates overcoming the abovenoted problems by providing a one-piece plastic shipping tray having support members solely along the longitudinal sides thereof, a feature which permits the trays and associated containers to be stacked and stored without the necessity of slave pallets and used in automatic storage and retrieving systems of the type described above. In the accomplishment of this objective, the shipping tray is formed from a single sheet of plastic material and includes a generally rectangular base having rows of laterally spaced hollow downwardly depending support legs formed at the longitudinal sides thereof. An upwardly extending wall is formed integrally at the edges of the base and serves to horizontally restrain a shipping container supported by the base. The legs are arranged to provide four-way entry for the forks of the lift truck and an unobstructed central passageway to permit transporting by material handling devices having a single relatively wide lifting platform. Lateral and longitudinal reinforcing ribs formed in the base provide sufficient bending strength for the tray to enable the latter to be supported at the edges ofthe support legs or along the base.

The shipping tray of the present invention also incorporates banding ribs and grooves in the wall and base, respectively, that serve to locate and retain the shipping bands used to securely fasten the container to the tray, and, additionally, to protect the bands from damage by the forks of the lift truck. The present invention also provides a number of stacking lugs on the wall to prevent wedging and locking between stacked trays in storage. Whereas previous designs have concentrated the weight of the stacked trays at the nested legs, the stacking lugs concentrate the weight of the trays at the walls thereby limiting the engagement between the nested support legs and facilitating easy removal of the trays for reuse. Additionally, the shipping tray is sized to be located in even multiples across the width ofa standard truck or freight car thereby eliminating the need for spacers and insulators during shipment.

Accordingly, it is an object of the present invention to provide a one-piece shipping tray having structural support members only along the longitudinal sides thereof, the tray having sufficient banding strength to permit storage and stacking of the tray and an associated container at the bases of the support members.

A further object of the present invention is to provide a shipping tray having integral means for retaining and protecting a banding member used to fasten a load to the tray.

It is a further object of the present invention to provide a one-piece nestable shipping tray having integral stacking lugs formed thereon which limit wedging between mating surfaces of the trays in storage.

Still another object of the present invention is to provide a nestable one-piece shipping tray having support legs formed along the longitudinal sides thereof which are arranged to permit four-way entry ofa fork lift truck and an unobstructed longitudinal passageway to permit entry ofa lifting platform, the tray having lateral and longitudinal reinforcing ribs providing sufficient bending strength to enable the tray and an associated shipping container to be supported solely at the edges of the support legs or at the base of the tray.

These and other objects of the present invention will be apparent to one skilled in the art upon reading the following detailed description, reference being made to the accompanying drawings in which:

FIGURE 1 is a side elevational view of a shipping container incorporating a shipping tray made in accordance with the present invention;

FIGURE 2 is a side elevational view showing the nesting in storage ofthe shipping trays shown in FIGURE 1;

FIGURE 3 is an enlarged fragmentary view taken along line 3-3 ofFIGURE 2;

FIGURE 4 is an enlarged view taken along line 4-4 of FIGURE 1;

FIGURE 5 is a view taken along line 5-5 of FIGURE 4;

FIGURE 6 is a view taken along line 6-6 ofFIGURE 4;

FIGURE 7 is a view taken along line 7-7 of FIGURE 4',

FIGURE Sis a view taken along line 8-8 of FIGURE 4:

FIGURE 9 is an enlarged top view of the shipping lid shown in FIGURE 1;

FIGURE 10 is a view taken along line 10-10 of FIGURE 9;

FIGURE ll is a view taken along line 11-11 of FIGURE 9;

FIGURE 12 is an enlarged view taken along line 12-12 of FIGURE 9; and

FIGURE 13 is an enlarged view taken along line 13-13 of FIGURE 9.

Referring to FIGURE 1, there is shown a shipping container 10 comprising a container or load 12, a shipping lid 14, and a shipping tray 16. The shipping lid 14 and the container 12 are fastened to the shipping tray 16 by vertical bands 18.

As shown in FIGURE 4, the shipping tray 16 made in accordance with the present invention is formed from a single sheet of plastic material such as polyethylene by a suitable process such as vacuum forming. More specifically, the shipping tray 16 comprises a generally rectangular base 20 having an upwardly extending continuous peripheral wall 22 and identical rows of downwardly depending hollow support legs formed at the longitudinal sides thereof. One row of legs includes end legs 24 and 26 and a central leg 28. The other row of legs are laterally spaced from and longitudinally aligned with the first set and include corresponding end legs 24 and 26 and a center leg 28. As shown in FIGURE 6, the support legs define two lateral passageways 30 which accommodate lateral entry of forks 32 ofa conventional lift truck for lifting and transporting the shipping container 10 at the base 20. As shown in FIGURE 7, the spaced rows of support legs define an uninterrupted longitudinal passageway 34 which accommodates entry of a lifting platform 35 of a material handling device such as a hand truck.

Referring to FIGURES 6 and 7, the end legs 24 and 26 include a base 36 circumscribed by overlapping rectangles and side walls 38 tapering upwardly and outwardly toward the base 20. Similarly and as shown in FIGURE 8, the center legs 28 have rectangular bases 40 and side walls 42 tapering upwardly and outwardly toward the base 20. Additionally, each support leg is provided with a drain hole 44 to prevent accumulation of moisture in the tray [6.

Referring to FIGURE 4, longitudinally extending reinforcing ribs 46 in the form of upwardly opening channels are formed in the base 20 between the legs 24, 26 and 28. The ribs 46 are designed to provide sufficient longitudinal bending strength for the tray 16 to enable the latter and the container [2 to be laterally or longitudinally supported at the base 20. A plurality of lateral reinforcing ribs 50 in the form of a series of alternately upwardly and downwardly opening channels are formed in the base 20 and extend transversely between the support legs 24, 26, 28 and the longitudinal reinforcing ribs 46. An enlarged central rib 53 serves as a central edge support surface in the event a pair of half-size containers are carried by the tray 16. As shown in FIGURE 7, the reinforcing ribs 50 are designed to provide sufficient bending strength for the tray to enable the latter and the container 12 to be vertically supported by members 52 at the bases of the support legs. As shown in FIGURE 4, the walls 22, the support legs 24, 26, and 28, and the reinforcing ribs 46 and 50 define a peripheral horizontal rim 54. The rim 54 serves to continuously support the edges of the container 12 and thereby reduce the center loads on the tray 16. This feature is particularly important when a corrugated container is being transported.

Referring to FIGURES 2 and 3, the hollow taper or draft angle of the support legs permit nesting of individual trays in storage. In other words, the support legs of one tray telescope within the cavity defined by the legs of the vertically adjacent tray and thereby reduce the space required for storage. It has been found that if the weight of the stacked trays is localized at the support legs, a wedging might occur at the mating surfaces thereby preventing separation of adjacent trays for reuse. To overcome this difficulty, a plurality of stacking lugs 56 are integrally formed along the longitudinal sides of the wall 22. As shown in FIGURE 3, the base of each stacking lug 56 is provided with a groove which registers the top surface of a lower tray. By appropriate sizing of the stacking lugs 56, the engagement between the support legs will be limited in storage. If desired, the stacking lugs can be sized to slightly space the support legs 24, 26, 28 in storage. In either case, the weight of the stacked trays will be localized at the support lugs 56 and the wall 22 and any wedging between mating surfaces will be substantially eliminated.

Referring to FIGURE 5, pairs of longitudinally spaced outwardly projecting banding ribs 58 are formed in the wall 22 and the base 20. Additionally, banding grooves 60 are formed in the reinforcing ribs 46. As shown in FIGURE 1, the ribs 58 and the grooves 60 cooperate to locate and retain the bands 18. Moreover, the ribs 58 and the grooves 60 protect the bands 18 from damage by the forks ofa lift truck.

The shipping trays of the present invention are adapted to be loaded in an even number of units across the width of a truck or a freight car. In other words and as shown in FIGURE 7, the width A of the tray 16 will be evenly divisible into the width ofa truck. As shown in FIGURE 6, the length of the tray will be evenly divisible into the width ofa freight car.

Referring to FIGURE 9, the shipping lid 14 is formed from a single sheet of plastic material and comprises a generally rectangular deck 62 having an integrally formed downwardly depending peripheral side wall 64. Four raised ribs 66 in the form of downwardly opening L-shaped channels are formed at the corners of the deck 62. Each rib 66 has a laterally extending leg 68 and a longitudinally extending leg 70. As shown in FIGURE l, the ribs 66 serve to locate and horizontally restrain the end legs 26 and 24 of the shipping tray l6'shown in phantom lines. A pair of raised U-shaped ribs 72 in the form of downwardly opening channels are formed on the top surface of the deck 62. Each rib 72 includes a longitudinal base 74 and laterally outwardly extending legs 76. As shown in FIGURE 1, the ribs 72 are adapted to locate and horizontally restrain the legs 28 of the shipping tray 16'. As will be appreciated, the ribs 66 and 72 will coact with support legs 24, 26 and 28 to prevent relative horizontal movement between the stacked shipping containers I during shipment.

An upwardly opening channel is formed in the deck 62 between the opposed ribs 66 and defines a transverse reinforcing rib 78 for the lid 14. Opposed pairs of upwardly opening channels intersect the ribs 78 and define longitudinal reinforcing ribs 80. The ribs 78 and 80 are adapted to contact the top surface of the container 12 and thereby evenly distribute the weight of the stacked shipping container 10. A raised lateral reinforcing rib 82 extends transversely between the channels 72 and is centrally intersected by a raised longitudinal rib 84. The aforementioned ribs 78, 80. 82, and 84 provide sufficient strength for the lid 14 to permit vertical stacking of a plurality of shipping containers l0.

Longitudinally spaced pairs of banding ribs 86 are formed transversely across the deck 62 and vertically along the side wall 64. In assembly, the banding ribs 86 are vertically aligned with the corresponding banding ribs 58 formed on the shipping tray 16. As shown in FIGURE 1, the ribs 86 locate and retain the bands 18 and protect the latter from damage during shipment. As shown in FIGURES 9 and I3, four downwardly extending pads 88 are formed at the corners of the deck 62. The pads 88 serve to distribute the weight of the stacked container at the outward edges and thereby reduce the central loading on the container 12 and the lower shipping tray 16. It will be noted that the surfaces on the lids 14 have corresponding tapers or draft angles to permit nesting ofa plurality of trays in the same manner as shown in FIGURE 2 with reference to the shipping trays 16.

As previously stated, it is preferred to form the shipping tray 16 and the shipping lid 14 from a single sheet of plastic such as polyethylene which may contain an ultraviolet stabilizer to increase resistance to weathering. In the practice of this invention, it has been found that a 53" x 42" tray formed from a .300 gauge sheet of polyethylene and having ribs 46 and 50 defined by 1- /8" x 1- /8" channels will provide sufficient strength to statically support a load of 20,000 pounds at the bases of support legs having an area of 220 square inches. It has also been found that a shipping lid 14 formed from a .140 gauge sheet of polyethylene will provide sufficient dynamic strength to accommodate shipment of two vertically stacked shipping containers 10. Results have indicated that trays and lids of the type described above will withstand repeated usage and handling without a decrease in strength and can be conveniently and inexpensively returned to the shipper.

Although only one form of this invention has been shown and described, other forms will be readily apparent to those skilled in the art. Therefore, it is not intended to limit the scope of this invention by the embodiment selected for the purpose of this disclosure but only by the claims which follow.

I claim:

1. A plastic shipping tray for use in transporting a load secured thereto by bands comprising: a rectangular base having an upwardly extending peripheral wall, said wall adapted to locate and horizontally restrain said load on said base; a plurality of tapered hollow support legs formed integrally with said base and depending downwardly therefrom, said support legs being arranged in opposed rows adjacent the longitudinal sides of said wall for permitting longitudinal and lateral entry for the forks of a lift truck and longitudinal entry of a lifting platform; longitudinal reinforcing ribs in the form of upwardly opening channels formed in said base and extending longitudinally between said support legs; a series of longitudinally spaced reinforcing ribs in the form of alternate upwardly and downwardly opening channels formed in said base and extending transversely between said first-mentioned reinforcing ribs and said legs, said first-mentioned and said second-mentioned reinforcing ribs providing bending strength for said tray to permit support of the latter and said load solely along the longitudinal edges of said support legs; banding ribs formed in said wall and banding grooves formed in said base for locating and retaining said bands and protecting the latter from damage during shipment.

2. A nestable plastic shipping tray, said shipping tray comprising: a rectangular base having a continuous peripheral wall formed integrally therearound that is adapted to horizontally locate and restrain a load supported by said base; laterally spaced rows of tapered hollow support legs formed integrally with said base and depending downwardly therefrom, said rows defining therebetween an uninterrupted central passageway for accommodating longitudinal entry of a lifting platform and said support legs being arranged to permit lateral and longitudinal entry for the forks of a lift truck; a series of longitudinally spaced laterally extending reinforcing ribs formed in said base and providing sufficient lateral bending strength for said tray to enable the latter and said load to be longitudinally supported at said legs; longitudinal reinforcing ribs formed in said base between said legs and providing sufficient longitudinal bending strength for said tray to enable the latter and said load to be supported at said base, said firstmentioned and said second-mentioned ribs and said support legs having tapered walls to permit nesting and stacking of said trays in storage; and a plurality of stacking lugs formed on said wall for carrying at said wall the weight of the trays stacked thereabove and thereby limit wedging between the support legs of adjacent trays.

3. A plastic shipping tray for use in transporting a load secured thereto by bands, comprising: a rectangular base having a continuous upwardly extending peripheral wall that is adapted to locate and horizontally restrain said load on said base; laterally spaced rows of downwardly depending hollow support legs formed integrally with said base inwardly of said wall, said rows defining therebetween an uninterrupted central passageway for accommodating longitudinal entry of a lifting platform and said support legs having tapered walls for nesting and stacking of the trays in storage and being arranged to permit lateral and longitudinal entry of the forks of a lift truck; upwardly opening channels formed in said base and extending longitudinally between said support legs, said channels forming reinforcing ribs providing sufficient longitudinal bending strength for said tray to enable the latter and said load to be supported at said base; a series of longitudinally spaced alternate upwardly and downwardly opening channels formed on said base and extending transversely between said firstmentioned channels and said legs whereby said channels, said support legs, and said wall define a peripheral rim for supporting the load at the edges thereof and reducing the center loading on said base, said second-mentioned channels forming reinforcing ribs providing sufficient lateral bending strength for said tray to permit the latter and said load to be supported solely along the longitudinal edges of said support legs; outwardly projecting banding ribs formed in said wall and recessed banding grooves formed in said base for locat ing and retaining said bands and protecting the latter from damage during shipment; and a plurality of stacking lugs formed on said wall for carrying at said wall the weight of the trays stacked thereabove and thereby limit wedging between the support legs of adjacent trays.

US3524415A 1968-11-14 1968-11-14 Plastic shipping tray Expired - Lifetime US3524415A (en)

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Cited By (51)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2103488A1 (en) * 1970-08-25 1972-04-14 Amervac Ind Inc
US3675595A (en) * 1970-04-20 1972-07-11 Sullifoam Inc Pallet
US3707127A (en) * 1970-03-05 1972-12-26 Dow Chemical Co Goods supporting pallet
US3768423A (en) * 1971-08-16 1973-10-30 Oakland Plastics Corp Pallet
US3857486A (en) * 1972-12-26 1974-12-31 Beloit Corp Web material roll with end protectors and method for making same
US3880093A (en) * 1971-08-31 1975-04-29 Schott Ind Inc Pallet
US3910204A (en) * 1974-06-20 1975-10-07 Evans Prod Co Structural foam skid
US3917066A (en) * 1973-03-22 1975-11-04 Nosco Plastics Palletized load with compression frame
US3968895A (en) * 1975-02-19 1976-07-13 Richard R. Barnes, Jr. Air cargo shipping container
US4000704A (en) * 1974-10-18 1977-01-04 Burlington Industries, Inc. Shipping pallet
US4019634A (en) * 1975-03-19 1977-04-26 Pierre Edmond Michel Bonnot Collapsible shipping container
US4061090A (en) * 1976-06-10 1977-12-06 Heckethorn Manufacturing Co. Plastic pallet
EP0058003A1 (en) * 1981-01-28 1982-08-18 Bigelow-Sanford, Inc. Shipping pallet and a package formed therefrom
USRE32344E (en) * 1981-01-28 1987-02-03 Bigelow-Sanford, Inc. Shipping pallet and a package formed therefrom
US4805777A (en) * 1984-08-30 1989-02-21 Mandel Ronald L Material handling arrangement
US4848247A (en) * 1987-01-12 1989-07-18 Lankhorst Recycling B.V. Unitary pallet
EP0335730A2 (en) * 1988-03-31 1989-10-04 The Coca-Cola Company Display system
EP0411391A1 (en) * 1989-08-04 1991-02-06 REBO-PLASTIC GMBH & CO. KG Transport pallet
US5052307A (en) * 1989-10-26 1991-10-01 Viking Engineering & Development, Incorporated Pallet tray system
US5086927A (en) * 1990-12-06 1992-02-11 Reynolds Consumer Products, Inc. Pallet for heavy loads
EP0583674A2 (en) * 1992-08-19 1994-02-23 REBO-PLASTIC GMBH & CO. KG Transport pallet
US5408937A (en) * 1992-12-10 1995-04-25 The Fabri-Form Co. Ventilated pallet
US5525030A (en) * 1995-09-01 1996-06-11 Reynolds Consumer Products Inc. Stacking devices
US5524554A (en) * 1995-03-02 1996-06-11 Continental Carlisle, Inc. Pallet for stacking catering equipment
US5549056A (en) * 1994-03-31 1996-08-27 Cadillac Products, Inc. Load distributor for pallets
US5596933A (en) * 1994-02-14 1997-01-28 The Fabri-Form Co. Reinforced plastic pallet
US5758771A (en) * 1996-09-05 1998-06-02 Formall Inc Pallet system
US5769003A (en) * 1996-09-05 1998-06-23 Formall, Inc. Keg pallet
US5791262A (en) * 1994-02-14 1998-08-11 The Fabri-Form Co. Reinforced plastic pallet
US6018927A (en) * 1998-04-17 2000-02-01 Formall, Inc. Thermoformed twin-sheet panel
US6070535A (en) * 1999-04-21 2000-06-06 Johnson; Scott H. Plastic pallet
US6123032A (en) * 1998-10-07 2000-09-26 Ohanesian; Harout Thermoplastic pallet
US6446563B1 (en) 1998-10-07 2002-09-10 Harout Ohanesian Thermoplastic pallet
US6634613B1 (en) 2000-10-05 2003-10-21 Emh Systems Shock-absorbing product carrier
GB2388123A (en) * 2002-05-02 2003-11-05 Panfan Internat Ltd Ventilation means for toilet bowl
US20060065171A1 (en) * 2004-09-24 2006-03-30 Fuji Photo Film Co., Ltd. Mounting base
WO2007061321A1 (en) * 2005-11-28 2007-05-31 Algen Holdings Limited Method of manufacturing a pallet
US20080237225A1 (en) * 2007-03-30 2008-10-02 Owen John Michael Component Container With Dunnage And Method For Using The Same
US20090053033A1 (en) * 2007-08-24 2009-02-26 Daniel Barbalho Pallet cover
US20090178946A1 (en) * 2008-01-15 2009-07-16 Hardigg Industries, Inc. Container assembly
US20090260551A1 (en) * 2008-04-22 2009-10-22 David Owen Mattson Transportation pad
US20100167320A1 (en) * 2006-01-30 2010-07-01 Life Technologies Corporation Compositions and Methods for Detecting and Quantifying Toxic Substances in Disease States
US20100199891A1 (en) * 2009-02-03 2010-08-12 Miller Dowel Company Beveled block pallet
US20110062049A1 (en) * 2009-09-11 2011-03-17 Pro-Pak Industries, Inc. Load tray and method for unitizing a palletized load
US20120017809A1 (en) * 2007-10-24 2012-01-26 Peter George Gunn Load support
US20120079966A1 (en) * 2010-10-01 2012-04-05 Zuliang Huang Aviation Pallet and its producing method
US20140054194A1 (en) * 2012-08-27 2014-02-27 Hon Hai Precision Industry Co., Ltd. Packaging assembly
WO2015014572A1 (en) * 2013-08-01 2015-02-05 Krones Aktiengesellschaft Container pallet having at least two containers
USRE45448E1 (en) 2005-05-12 2015-04-07 Becklin Holdings, Inc. Stackable container apparatus and methods
US9340319B2 (en) 2011-11-09 2016-05-17 Norduyn Inc. Cargo pallet and method of manufacture thereof
US9688437B1 (en) * 2016-01-19 2017-06-27 Montara Verpacken Mit System Gmbh Cover for a stackable transport pallet

Cited By (66)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3707127A (en) * 1970-03-05 1972-12-26 Dow Chemical Co Goods supporting pallet
US3675595A (en) * 1970-04-20 1972-07-11 Sullifoam Inc Pallet
FR2103488A1 (en) * 1970-08-25 1972-04-14 Amervac Ind Inc
US3768423A (en) * 1971-08-16 1973-10-30 Oakland Plastics Corp Pallet
US3880093A (en) * 1971-08-31 1975-04-29 Schott Ind Inc Pallet
US3857486A (en) * 1972-12-26 1974-12-31 Beloit Corp Web material roll with end protectors and method for making same
US3917066A (en) * 1973-03-22 1975-11-04 Nosco Plastics Palletized load with compression frame
US3910204A (en) * 1974-06-20 1975-10-07 Evans Prod Co Structural foam skid
US4000704A (en) * 1974-10-18 1977-01-04 Burlington Industries, Inc. Shipping pallet
US3968895A (en) * 1975-02-19 1976-07-13 Richard R. Barnes, Jr. Air cargo shipping container
US4019634A (en) * 1975-03-19 1977-04-26 Pierre Edmond Michel Bonnot Collapsible shipping container
US4061090A (en) * 1976-06-10 1977-12-06 Heckethorn Manufacturing Co. Plastic pallet
EP0058003A1 (en) * 1981-01-28 1982-08-18 Bigelow-Sanford, Inc. Shipping pallet and a package formed therefrom
USRE32344E (en) * 1981-01-28 1987-02-03 Bigelow-Sanford, Inc. Shipping pallet and a package formed therefrom
US4805777A (en) * 1984-08-30 1989-02-21 Mandel Ronald L Material handling arrangement
US4848247A (en) * 1987-01-12 1989-07-18 Lankhorst Recycling B.V. Unitary pallet
EP0335730A3 (en) * 1988-03-31 1991-01-09 The Coca-Cola Company Display system
EP0335730A2 (en) * 1988-03-31 1989-10-04 The Coca-Cola Company Display system
EP0411391A1 (en) * 1989-08-04 1991-02-06 REBO-PLASTIC GMBH & CO. KG Transport pallet
US5052307A (en) * 1989-10-26 1991-10-01 Viking Engineering & Development, Incorporated Pallet tray system
US5086927A (en) * 1990-12-06 1992-02-11 Reynolds Consumer Products, Inc. Pallet for heavy loads
EP0583674A2 (en) * 1992-08-19 1994-02-23 REBO-PLASTIC GMBH & CO. KG Transport pallet
EP0583674A3 (en) * 1992-08-19 1994-06-08 Rebo Plastic Gmbh & Co Kg Transport pallet
US5408937A (en) * 1992-12-10 1995-04-25 The Fabri-Form Co. Ventilated pallet
US5791262A (en) * 1994-02-14 1998-08-11 The Fabri-Form Co. Reinforced plastic pallet
US5596933A (en) * 1994-02-14 1997-01-28 The Fabri-Form Co. Reinforced plastic pallet
US5638760A (en) * 1994-03-31 1997-06-17 Cadillac Products, Inc. Load distributor for pallets
US5549056A (en) * 1994-03-31 1996-08-27 Cadillac Products, Inc. Load distributor for pallets
US5524554A (en) * 1995-03-02 1996-06-11 Continental Carlisle, Inc. Pallet for stacking catering equipment
US5525030A (en) * 1995-09-01 1996-06-11 Reynolds Consumer Products Inc. Stacking devices
US5758771A (en) * 1996-09-05 1998-06-02 Formall Inc Pallet system
US5769003A (en) * 1996-09-05 1998-06-23 Formall, Inc. Keg pallet
US6018927A (en) * 1998-04-17 2000-02-01 Formall, Inc. Thermoformed twin-sheet panel
US6446563B1 (en) 1998-10-07 2002-09-10 Harout Ohanesian Thermoplastic pallet
US6123032A (en) * 1998-10-07 2000-09-26 Ohanesian; Harout Thermoplastic pallet
US6070535A (en) * 1999-04-21 2000-06-06 Johnson; Scott H. Plastic pallet
US6634613B1 (en) 2000-10-05 2003-10-21 Emh Systems Shock-absorbing product carrier
GB2388123A (en) * 2002-05-02 2003-11-05 Panfan Internat Ltd Ventilation means for toilet bowl
US6983491B2 (en) 2002-05-02 2006-01-10 Gary Ian Curtis Odor removal apparatus and/or methods
US20030229937A1 (en) * 2002-05-02 2003-12-18 Curtis Gary Ian Odour removal apparatus and/or methods
US20060065171A1 (en) * 2004-09-24 2006-03-30 Fuji Photo Film Co., Ltd. Mounting base
USRE45448E1 (en) 2005-05-12 2015-04-07 Becklin Holdings, Inc. Stackable container apparatus and methods
WO2007061321A1 (en) * 2005-11-28 2007-05-31 Algen Holdings Limited Method of manufacturing a pallet
US20100167320A1 (en) * 2006-01-30 2010-07-01 Life Technologies Corporation Compositions and Methods for Detecting and Quantifying Toxic Substances in Disease States
US20080237225A1 (en) * 2007-03-30 2008-10-02 Owen John Michael Component Container With Dunnage And Method For Using The Same
US7918165B2 (en) * 2007-03-30 2011-04-05 Magna International Inc. Component container with dunnage and method for using the same
US20090053033A1 (en) * 2007-08-24 2009-02-26 Daniel Barbalho Pallet cover
US8267018B2 (en) * 2007-10-24 2012-09-18 Peter George Gunn Load support
US20120017809A1 (en) * 2007-10-24 2012-01-26 Peter George Gunn Load support
WO2009091602A3 (en) * 2008-01-15 2009-09-24 Hardigg Industries, Inc. Container assembly
US8789699B2 (en) * 2008-01-15 2014-07-29 Hardigg Industries, Inc. Container assembly
EP2682347A1 (en) * 2008-01-15 2014-01-08 Hardigg Industries, Inc. Container assembly
US20090178946A1 (en) * 2008-01-15 2009-07-16 Hardigg Industries, Inc. Container assembly
EP2238039A4 (en) * 2008-01-15 2012-03-28 Hardigg Ind Inc Container assembly
EP2238039A2 (en) * 2008-01-15 2010-10-13 Hardigg Industries, Inc. Container assembly
US20090260551A1 (en) * 2008-04-22 2009-10-22 David Owen Mattson Transportation pad
US20100199891A1 (en) * 2009-02-03 2010-08-12 Miller Dowel Company Beveled block pallet
US8256621B2 (en) * 2009-09-11 2012-09-04 Pro-Pak Industries, Inc. Load tray and method for unitizing a palletized load
US20110062049A1 (en) * 2009-09-11 2011-03-17 Pro-Pak Industries, Inc. Load tray and method for unitizing a palletized load
US20120079966A1 (en) * 2010-10-01 2012-04-05 Zuliang Huang Aviation Pallet and its producing method
US8651027B2 (en) * 2010-10-01 2014-02-18 Zuliang Huang Aviation pallet and its producing method
US9340319B2 (en) 2011-11-09 2016-05-17 Norduyn Inc. Cargo pallet and method of manufacture thereof
US8800765B2 (en) * 2012-08-27 2014-08-12 Hon Hai Precision Industry Co., Ltd. Packaging assembly
US20140054194A1 (en) * 2012-08-27 2014-02-27 Hon Hai Precision Industry Co., Ltd. Packaging assembly
WO2015014572A1 (en) * 2013-08-01 2015-02-05 Krones Aktiengesellschaft Container pallet having at least two containers
US9688437B1 (en) * 2016-01-19 2017-06-27 Montara Verpacken Mit System Gmbh Cover for a stackable transport pallet

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