WO1997046456A1 - Palette a deux feuilles - Google Patents
Palette a deux feuilles Download PDFInfo
- Publication number
- WO1997046456A1 WO1997046456A1 PCT/US1997/009524 US9709524W WO9746456A1 WO 1997046456 A1 WO1997046456 A1 WO 1997046456A1 US 9709524 W US9709524 W US 9709524W WO 9746456 A1 WO9746456 A1 WO 9746456A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- sheet
- pallet
- strengtheners
- pallet according
- series
- 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.)
- Ceased
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
- B65D19/00—Pallets or like platforms, with or without side walls, for supporting loads to be lifted or lowered
- B65D19/0004—Rigid pallets without side walls
- B65D19/0006—Rigid pallets without side walls the load supporting surface being made of a single element
- B65D19/0008—Rigid pallets without side walls the load supporting surface being made of a single element forming a continuous plane contact surface
- B65D19/001—Rigid pallets without side walls the load supporting surface being made of a single element forming a continuous plane contact surface the base surface being made of a single element
- B65D19/0014—Rigid pallets without side walls the load supporting surface being made of a single element forming a continuous plane contact surface the base surface being made of a single element forming discontinuous or non-planar contact surfaces
- B65D19/0018—Rigid pallets without side walls the load supporting surface being made of a single element forming a continuous plane contact surface 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
-
- 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
- B65D2519/00—Pallets or like platforms, with or without side walls, for supporting loads to be lifted or lowered
- B65D2519/00004—Details relating to pallets
- B65D2519/00009—Materials
- B65D2519/00014—Materials for the load supporting surface
- B65D2519/00034—Plastic
-
- 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
- B65D2519/00—Pallets or like platforms, with or without side walls, for supporting loads to be lifted or lowered
- B65D2519/00004—Details relating to pallets
- B65D2519/00009—Materials
- B65D2519/00049—Materials for the base surface
- B65D2519/00069—Plastic
-
- 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
- B65D2519/00—Pallets or like platforms, with or without side walls, for supporting loads to be lifted or lowered
- B65D2519/00004—Details relating to pallets
- B65D2519/00258—Overall construction
- B65D2519/00263—Overall construction of the pallet
- B65D2519/00273—Overall construction of the pallet made of more than one piece
-
- 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
- B65D2519/00—Pallets or like platforms, with or without side walls, for supporting loads to be lifted or lowered
- B65D2519/00004—Details relating to pallets
- B65D2519/00258—Overall construction
- B65D2519/00283—Overall construction of the load supporting surface
- B65D2519/00288—Overall construction of the load supporting surface made of one piece
-
- 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
- B65D2519/00—Pallets or like platforms, with or without side walls, for supporting loads to be lifted or lowered
- B65D2519/00004—Details relating to pallets
- B65D2519/00258—Overall construction
- B65D2519/00313—Overall construction of the base surface
- B65D2519/00318—Overall construction of the base surface made of one piece
-
- 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
- B65D2519/00—Pallets or like platforms, with or without side walls, for supporting loads to be lifted or lowered
- B65D2519/00004—Details relating to pallets
- B65D2519/00258—Overall construction
- B65D2519/00398—Overall construction reinforcements
- B65D2519/00402—Integral, e.g. ribs
- B65D2519/00407—Integral, e.g. ribs on the load supporting surface
-
- 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
- B65D2519/00—Pallets or like platforms, with or without side walls, for supporting loads to be lifted or lowered
- B65D2519/00004—Details relating to pallets
- B65D2519/00258—Overall construction
- B65D2519/00398—Overall construction reinforcements
- B65D2519/00402—Integral, e.g. ribs
- B65D2519/00412—Integral, e.g. ribs on the base surface
-
- 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
- B65D2519/00—Pallets or like platforms, with or without side walls, for supporting loads to be lifted or lowered
- B65D2519/00004—Details relating to pallets
- B65D2519/00547—Connections
- B65D2519/00552—Structures connecting the constitutive elements of the pallet to each other, i.e. load supporting surface, base surface and/or separate spacer
- B65D2519/00557—Structures connecting the constitutive elements of the pallet to each other, i.e. load supporting surface, base surface and/or separate spacer without separate auxiliary elements
-
- 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
- B65D2519/00—Pallets or like platforms, with or without side walls, for supporting loads to be lifted or lowered
- B65D2519/00004—Details relating to pallets
- B65D2519/00547—Connections
- B65D2519/00552—Structures connecting the constitutive elements of the pallet to each other, i.e. load supporting surface, base surface and/or separate spacer
- B65D2519/00557—Structures connecting the constitutive elements of the pallet to each other, i.e. load supporting surface, base surface and/or separate spacer without separate auxiliary elements
- B65D2519/00567—Structures connecting the constitutive elements of the pallet to each other, i.e. load supporting surface, base surface and/or separate spacer without separate auxiliary elements mechanical connection, e.g. snap-fitted
-
- 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
- B65D2519/00—Pallets or like platforms, with or without side walls, for supporting loads to be lifted or lowered
- B65D2519/00004—Details relating to pallets
- B65D2519/00736—Details
- B65D2519/00825—Finishing of the external surfaces
- B65D2519/0083—Anti-slip means
- B65D2519/00835—Integral
Definitions
- the present invention relates generally to pallets and, more particularly, to twin-sheet plastic pallets.
- Pallets have long been used to transport and store a wide variety of goods. Traditionally pallets were constructed of wood. However, wood pallets are subject to breakage and over an extended period of time do not stand up to repeated use. More recently, pallets have been made from plastic. Plastic pallets have the advantage of consistent physical characteristics and have a longer reusable life. Pallet designs using an upper and lower molded plastic sheet which are fused together to form a twin sheet structure have become very popular. Although much more durable, twin sheet plastic pallets have a much higher initial cost than either wood pallets or single sheet plastic pallets. Pallet manufacturers have consequently focused on obtaining a twin sheet plastic pallet which maximizes the strength of the pallet relative to the amount of plastic used. The importance of this fact is made more apparent because industry standards which limit the minimum leg height and overall height of the pallet.
- U.S. Patent No. 5,401,347 patent to Shuert discloses the use of opposed frusto-conical hollow bosses integrally formed in the first and second sheets of the pallet. Each of the frusto-conical hollow bosses is fused to the corresponding opposed hollow boss along their adjacent angled sides in an intermeshing relationship.
- U.S. Patent Nos. 5,143,778 and 5,108,529 to Shuert disclose a twin pallet and related method having portions of the first and second sheets which are fused together along angled sides thereof while leaving an air space in an upper portion between the portions. Although several different approaches have been taken to maximize the strength of twin sheet pallets, existing pallets have not yet achieved the optimum amount of strength for the amount of plastic used in forming the pallet.
- a twin sheet plastic pallet that has high structural strength while minimizing the amount of plastic required.
- Each of the strengtheners has a truncated upper portion connected to the first sheet and a base portion connected to the second sheet so as to position the first and second sheets in fixed parallel space relation to each other and to thereby define a rigid pallet for supporting a load on the upper surface thereof.
- the strengtheners are integrally formed on the second sheet and extend upwardly therefrom so as to be fused to the lower surface of the first sheet.
- the twin sheet pallet takes advantage of the broadening of the truncated pyramidal shape to assist in distributing any load applied to the upper surface of the first sheet .
- the strengtheners preferably cover substantially entirely the upper surface of the second sheet .
- the first and second sheets each preferably have correspondingly greek key style shaped peripheral edge portions. These greek key style shaped peripheral edge portions are fused together in interlocking engagement.
- the greek key style shape peripheral edge portions provide improved overall strength to the pallet because of the non-linear fusion and increased surface area. Because of this greek key style shape peripheral edge to the pallet, the pallet can withstand much higher shear force than a conventional linearly fused pallet having parallel peripheral edge portions.
- the truncated pyramidal shaped strengtheners also preferably have a plurality of reinforcement ribs to further enhance the load bearing capability of the pallet. Ideally, at least one reinforcement rib is located on at least one side of each strengthener.
- a pair of reinforcement ribs are located on opposed sides of the strengthener and a single rib is located on opposite sides of a majority of the strengtheners to thereby provide improved strength characteristics for these strengtheners and thereby improve overall load distribution and strength of the pallet .
- the first sheet includes a plurality of first supporting legs which are received in corresponding second supporting legs provided in the second sheet for providing additional strength and stability to the pallet .
- the non-slip surface is achieved by elevated ribs comprising a series of Xs when viewed from the corner of the pallet and a series of interrupted intersecting diagonally spaced ribs which cooperate to form opposed spaced parallel sides of the square surrounding and separating each of the series of Xs .
- the configuration of the non-slip surface limits undesirable movement of the load in any direction.
- the use of the elevated ribs provides the additional benefit of raising the load above the plane of the upper surface so as to minimize any damage to the load by moisture. This is accomplished by having any undesirable moisture collect between the elevated ribs to minimize moisture settling on the load carried by the pallet.
- the elevated ribs not only serve the functional purposes set forth above, but also provide an aesthetically appealing design to the upper surface of the pallet.
- FIG. 1 is a perspective view partially cutaway illustrating a plastic pallet in accordance with the present invention
- FIG. 2 is a top plan view partially cutaway and partially in phantom of a portion of the plastic pallet shown in Fig. 1;
- FIG. 3 is a cross sectional view taken along line 3-3 of Fig. 2;
- FIG. 4 is an exploded view of the first sheet and second sheet of the pallet shown in Fig. 3.
- Figs. 1 through 4 illustrate an embodiment of a pallet, generally indicated as 10, according to the present invention.
- the pallet 10 is a twin sheet configuration having a first sheet, generally indicated as 12 and a second sheet, generally indicated as 14.
- the first sheet 12 has a generally planar upper load bearing surface 16 and a lower surface 18.
- the first sheet 12 has a plurality of support legs 20 which extend downward from the lower surface 18.
- the second sheet 14 also has a plurality of corresponding support legs 22 which are adapted to receive the corresponding support legs 20 from the first sheet 12 therein as shown in Figs. 1, 3, and 4.
- This cooperative seating of the support legs 20 in the support legs 22 provides the pallet 10 with additional strength and rigidity, especially since the support legs of a pallet are subject to such abuse from fork lifts (not shown) and the like during use.
- the second sheet 14 also has a plurality of strengtheners 24 integrally formed or connected to an upper surface 26 thereof.
- Each strengthener 24 has a truncated pyramidal shape, with a truncated top 28, as shown in Figs. 1, 3, and 4, and a broad base 30 located in engagement with the upper surface 26 of the second sheet 14.
- each strengthener 24 has at least one reinforcing rib 32 on at least one side of the strengthener. As best shown in Fig. 2, the number of reinforcing ribs 32 which are formed on each strengthener 24 depends where the strengthener is located on the upper surface 26 of the second sheet 14.
- Those strengtheners 24 which are located away from a peripheral edge 34b of the second sheet 14 and away from the plurality of support legs 22 have a single rib 32 located on opposed sides of the strengthener and a pair of ribs located on the other opposed sides thereof, for a total of six reinforcing ribs per strengthener.
- This number of reinforcing ribs 32 is reduced due to space considerations for strengtheners 24 which are located adjacent the peripheral edge 34b and/or one of the plurality of support legs 22, see for example, the strengtheners identified as 24' and 24'' in Fig. 2. In each instance, reinforcing ribs 32 have been eliminated from one or more sides of strengtheners 24' and 24" .
- each strengthener 24 is integrally formed in or are connected to the upper surface 26 of the second sheet 14 and cover substantially entirely the upper surface thereof.
- the orientation of each strengthener 24 is such that the truncated top 28 is located remote from the upper surface 26 of the second sheet 14 and the base 30 is connected to or integrally formed in the second sheet . This orientation of each strengthener 24 provides the pallet 10 with improved load distribution characteristics and enhances the strength thereof.
- the peripheral side edges 34a and 34b of the first sheet 12 and the second sheet 14, respectively, have a greek key style configuration.
- This greek key style configuration of the peripheral edges 34a and 34b of the first and second sheets 12 and 14 provides the pallet with greatly increased shear strength because of the non ⁇ linear engagement of the first and second sheets and because of the increased surface area of the interlocking or intermeshing connection.
- the first sheet 12 and the second sheet 14 are fused together, by heating or other conventional means for joining thermoplastic sheets, so as to position the first and second sheets in fixed parallel spaced relation to each other to thereby define the rigid pallet 10 capable of supporting a load on the upper surface 16 thereof.
- the pallet 10 has a greatly increased strength.
- the resultant pallet 10 according to the present invention has a dynamic load bearing capability of between at least 4,000lbs and 12,000lbs and a static load bearing capability of between at least 20,000lbs and 60,000lb ⁇ . As is readily understood by those skilled in the art to which the invention relates, these load bearing numbers can be greatly enhanced by the inclusion of steel reinforcements.
- the upper surface 16 of the pallet 10, shown best in Figs. 1 and 2 has a non-skid or non-slip surface. This non-slip upper surface is achieved by a plurality of elevated ribs 36 shown in Figs. 1 and 2.
- the elevated ribs 36 are connected to or integrally formed in the upper surface 16 of the first sheet 12 and have a height of approximately .070 to .080 inches. It is to be understood that this height may vary as desired, depending on the individual use of the pallet while remaining within the spirit of the present invention.
- the elevated ribs 36 form a series of spaced apart "+s" or "Xs", depending upon the direction from which they are viewed, and a series of interrupted diagonally spaced ribs which cooperate to form opposed spaced parallel sides of a square surrounding and separating each of the series of "Xs” .
- This pattern of the elevated ribs 36 is not only aesthetic, but also limits unwanted movement, in any direction, of a load (not shown) placed thereon.
- the elevated ribs 36 also raise the load above the upper surface 16 of the first sheet 12, which helps to keep the load from being damaged by any unwanted moisture.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Pallets (AREA)
Abstract
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AU31541/97A AU3154197A (en) | 1996-06-04 | 1997-06-03 | Twin sheet pallet |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US65526896A | 1996-06-04 | 1996-06-04 | |
| US08/655,268 | 1996-06-04 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO1997046456A1 true WO1997046456A1 (fr) | 1997-12-11 |
Family
ID=24628223
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/US1997/009524 Ceased WO1997046456A1 (fr) | 1996-06-04 | 1997-06-03 | Palette a deux feuilles |
Country Status (2)
| Country | Link |
|---|---|
| AU (1) | AU3154197A (fr) |
| WO (1) | WO1997046456A1 (fr) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2000073158A1 (fr) * | 1999-05-28 | 2000-12-07 | Burnham Service Company, Inc. | Palette disposable par selection |
| US6418862B1 (en) | 2000-06-23 | 2002-07-16 | Burnham Service Company, Inc. | Shock absorbing pallet |
| DE102007050963A1 (de) | 2007-10-23 | 2009-04-30 | Durotherm Kunststoffverarbeitung Gmbh | Palettenboden für einen Transportbehälter |
| WO2013015675A3 (fr) * | 2011-07-22 | 2013-04-11 | Shamsul Bachar Bin Mohd Nor | Palette à emboîtement |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1265049B (de) * | 1964-11-12 | 1968-03-28 | Landbouwwerktuigen & Maschf | Ladebrett |
| US3717922A (en) * | 1971-06-08 | 1973-02-27 | H Witkowski | Method of making skin reinforced pallet |
| FR2206248A1 (fr) * | 1972-11-10 | 1974-06-07 | Gmt Sa | |
| WO1994010051A1 (fr) * | 1992-11-05 | 1994-05-11 | Mauser-Werke Gmbh | Palette en plastique |
-
1997
- 1997-06-03 AU AU31541/97A patent/AU3154197A/en not_active Abandoned
- 1997-06-03 WO PCT/US1997/009524 patent/WO1997046456A1/fr not_active Ceased
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1265049B (de) * | 1964-11-12 | 1968-03-28 | Landbouwwerktuigen & Maschf | Ladebrett |
| US3717922A (en) * | 1971-06-08 | 1973-02-27 | H Witkowski | Method of making skin reinforced pallet |
| FR2206248A1 (fr) * | 1972-11-10 | 1974-06-07 | Gmt Sa | |
| WO1994010051A1 (fr) * | 1992-11-05 | 1994-05-11 | Mauser-Werke Gmbh | Palette en plastique |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2000073158A1 (fr) * | 1999-05-28 | 2000-12-07 | Burnham Service Company, Inc. | Palette disposable par selection |
| US6418862B1 (en) | 2000-06-23 | 2002-07-16 | Burnham Service Company, Inc. | Shock absorbing pallet |
| DE102007050963A1 (de) | 2007-10-23 | 2009-04-30 | Durotherm Kunststoffverarbeitung Gmbh | Palettenboden für einen Transportbehälter |
| WO2013015675A3 (fr) * | 2011-07-22 | 2013-04-11 | Shamsul Bachar Bin Mohd Nor | Palette à emboîtement |
Also Published As
| Publication number | Publication date |
|---|---|
| AU3154197A (en) | 1998-01-05 |
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