EP2899133A1 - Vollholz-Halbpalette - Google Patents

Vollholz-Halbpalette Download PDF

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Publication number
EP2899133A1
EP2899133A1 EP14193852.2A EP14193852A EP2899133A1 EP 2899133 A1 EP2899133 A1 EP 2899133A1 EP 14193852 A EP14193852 A EP 14193852A EP 2899133 A1 EP2899133 A1 EP 2899133A1
Authority
EP
European Patent Office
Prior art keywords
stringers
deck boards
pallet
blocks
deck
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Withdrawn
Application number
EP14193852.2A
Other languages
English (en)
French (fr)
Inventor
Michael R Miller
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.)
Miller Dowel Co
Original Assignee
Miller Dowel Co
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 Miller Dowel Co filed Critical Miller Dowel Co
Publication of EP2899133A1 publication Critical patent/EP2899133A1/de
Withdrawn legal-status Critical Current

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    • 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
    • B65D19/0053—Rigid pallets without side walls the load supporting surface being made of more than one element
    • B65D19/0077—Rigid pallets without side walls the load supporting surface being made of more than one element forming discontinuous or non-planar contact surfaces
    • B65D19/0089—Rigid pallets without side walls the load supporting surface being made of more than one element forming discontinuous or non-planar contact surfaces the base surface being made of more than one element
    • B65D19/0093—Rigid pallets without side walls the load supporting surface being made of more than one element forming discontinuous or non-planar contact surfaces the base surface being made of more than one element forming discontinuous or non-planar contact surfaces
    • B65D19/0095—Rigid pallets without side walls the load supporting surface being made of more than one element forming discontinuous or non-planar contact surfaces the base surface being made of more than one element forming discontinuous or non-planar contact surfaces and each contact surface having a stringer-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
    • B65D19/00—Pallets or like platforms, with or without side walls, for supporting loads to be lifted or lowered
    • B65D19/38—Details or accessories
    • 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
    • B65D2519/00029—Wood
    • 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
    • B65D2519/00064—Wood
    • 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
    • B65D2519/00084—Materials for the non-integral separating spacer
    • B65D2519/00099—Wood
    • 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
    • B65D2519/00293—Overall construction of the load supporting surface 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
    • B65D2519/00298—Overall construction of the load supporting surface skeleton type
    • 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
    • B65D2519/00323—Overall construction of the base surface 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
    • B65D2519/00313—Overall construction of the base surface
    • B65D2519/00328—Overall construction of the base surface shape of the contact surface of the base
    • B65D2519/00333—Overall construction of the base surface shape of the contact surface of the base contact surface having a stringer-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
    • B65D2519/00258—Overall construction
    • B65D2519/00368—Overall construction of the non-integral separating spacer
    • B65D2519/00373—Overall construction of the non-integral separating spacer whereby at least one spacer is 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
    • B65D2519/00547—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
    • B65D2519/00562—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 chemical connection, e.g. glued, welded, sealed
    • 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
    • B65D2519/00572—Structures connecting the constitutive elements of the pallet to each other, i.e. load supporting surface, base surface and/or separate spacer with separate auxiliary element, e.g. screws, nails, bayonets
    • 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
    • B65D2519/00741—Dimensional aspects of the pallet
    • B65D2519/00771—Dimensional aspects of the pallet smaller than "standard"
    • 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
    • B65D2519/00776—Accessories for manipulating the pallet
    • B65D2519/00796—Guiding means for fork-lift

Definitions

  • the present invention relates generally to pallets, and more particularly to a half pallet having deck boards connected to stringers with wooden dowels.
  • Pallets of various types are known in the art.
  • Pallets of the stringer design are constructed of wood and include parallel stringers to which transverse deck boards are then nailed or otherwise secured with metal fastener devices to form the pallet.
  • Pallets of the block design have wooden blocks at the corner and central locations to support the load. Pallets need to have sufficient strength to withstand the weight of objects loaded thereon and other impact forces to which the pallets are subjected when objects are loaded onto them and when the pallets are moved, as by a fork-lift truck or the like.
  • pallets are most often damaged at their lead boards.
  • the tines of the fork lift will often impact the lead board of the pallet with significant force. This shearing force may disengage the lead board or otherwise damage it, yielding a worn or damaged pallet that may not work as well and may be dangerous to users and merchandise.
  • pallets can become worn and weakened, causing some of the stringers or deck boards to break or become at least partially detached, rendering the pallet inoperable or in a dangerous condition.
  • the use of nails or other metal fastener devices can also render pallets dangerous. Many times, the damage to a pallet occurs where the metal nail goes into the wood.
  • the use of metal fasteners can cause splitting in the stringers or deck boards. Further faults include product damage or personal injury caused by exposed fasteners and inadequate joint stiffeners.
  • half pallets it is also attractive to retail stores to use half pallets to allow the pallets to be used within the stores in the aisles to distribute product directly from the pallets to the shelves. This procedure increase efficiency and reduces the time spent in distribution.
  • half pallets present problems in maintenance of the proper sizing of the notches or openings for the fork tines of forklifts or hand jacks, while simultaneously maintaining the strength and durability of the overall pallet. Because a nail or screw cannot be driven too close to the edge of a stringer without splitting the stringer, there is a minimum thickness of the stringer that can be used. If the stringer is thicker than this minimum allowance, the opening for the fork tines is not wide enough and thus the pallet becomes unusable.
  • a half pallet is generally 24 inches by 40 inches although it can be smaller as larger.
  • the openings, or notches, allowing for entry of the fork times must be at least 21 inches from end to end. If the stringers or blocks are too thick or otherwise are positioned to reduce the notch to less than 21 inches, then the utility of the half pallet is greatly reduced.
  • Another benefit of the present invention is to provide a half pallet that can be easily assembled through the use of wooden dowels that facilitate attachment of transverse deck boards to parallel stringers or blocks in a quick and efficient manner.
  • Another benefit of the present invention is to provide a half pallet that works properly.
  • the dowels provide for a connection that is sufficiently strong to resist standard shear and other forces.
  • edge and end distance of the vertical dowel fasteners in the pallet assembly can be different than typical steel fasteners which require more edge or end distances.
  • intersection of all wood to wood joints can be glued with either a chemical or mechanical type adhesive.
  • Another benefit of the present invention is to provide a half pallet that can be more easily disassembled.
  • the dowels are made of wood; therefore, the pallet can be more readily stripped or broken down using standard wood-cutting saws. This allows for an increased number of customers for used or worn pallets, because those customers have no need for specialty equipment to grind up nails.
  • a half pallet is made predominately of wood, generally Southern yellow pine, oak or a combination thereof.
  • the half pallet of the subject invention comprises a plurality of wood deck boards, stringers, and blocks.
  • Each wooden stringer comprises four elongated longitudinal surfaces and two end surfaces.
  • a selected longitudinal surface is designated as a mounting surface and has a plurality of bores formed therein so that the longitudinal axes of the bores are generally normal to the mounting surface.
  • the size and shape of the bores can range from a depth completely through the deck boards and stringers to a smaller depth sufficient to receive a portion of a dowel.
  • the deck boards can be connected to the stringers by a plurality of wooden dowels.
  • the dowels may be completely cylindrical or it may have a first and second portion, comprising at least two contiguous dowel sections having different cross-sectional size, which can mate with a corresponding configuration of the bore, thereby connecting the stringer to the deck board. Adhesive is used to augment that connection.
  • the second end of the deck board can be similarly connected to a second stringer so that the deck board is transverse to the wooden stringers.
  • a pallet can be formed by so connecting a plurality of deck boards to the stringers. In lieu of some of the stringers, blocks can be utilized for a block pallet.
  • the substantially all wood half pallet of the subject invention has a plurality of wooden pallet upper and lower stringers, deck boards and blocks positioned to form a half pallet, the deck boards being parallel to one another, the upper stringers being spaced, and parallel to one another in a horizontal plane, and transverse to and adjacent the deck boards on an upper surface, and adjacent a block on an opposite surface for forming a 24"x40" rectangular shape.
  • Each block is positioned with its grain substantially perpendicular to the horizontal plane of the stringers, with the edges of the deck boards and the upper and lower stringers being in the same vertical plane.
  • the deck boards have a mounting surface and a top surface; the half pallet has through openings on each side to allow for the insertion of pallet forks from any side.
  • the deck boards have pilot holes extending substantially perpendicular to the mounting surface through the deck boards and into adjacent stringers and blocks, the pilot hole being completely through the deck board, and spaced from zero to about 3/16 inch to 1/2 inch away from the edge of the stringers, blocks and the deck boards.
  • the dowels may be positioned with no space between them. i.e., adjacent one another and touching.
  • Adhesive is disposed on the mounting surfaces and in the pilot holes and a plurality of wooden dowels disposed in the pilot holes such that the top surface of the pallet deck boards and the top surface of the dowels are substantially co-planar, wherein the dowels connect the deck boards, stringers and blocks through a cinching action on at least the deck boards.
  • the pallet of the subject invention also may include a plurality of deck boards, each deck board including a longitudinal mounting surface having a plurality of vertical bores formed therethrough, a plurality of deck boards, upper and lower stringers, and blocks, each having a plurality of substantially vertical openings, each of the vertical openings corresponding to a vertical bore.
  • Each of the vertical openings and vertical bores are from 3/16 to 1/2 inch from an edge of a stringer, block and deck board.
  • the deck boards are spaced and parallel.
  • the stringers are spaced and transverse to the deck boards, with the deck boards vertically adjacent the upper stringers.
  • the blocks are between the upper and lower stringers, and have a vertical grain parallel with the vertical bores.
  • a plurality of wooden dowels are inserted through the vertical bores of the deck boards through to the plurality of respective vertical openings such that the deck boards stringers and blocks are connected together in a predetermined orientation to form a half pallet, whereby the half pallet has openings sufficiently large to permit entry of fork lift tines on each of the four sides of the half pallet.
  • one embodiment of the invention comprises the combination of wooden dowels and adhesive to connect stringers, deck boards and blocks to form a half pallet.
  • deck boards 10 and stringers 14, 15 can be seen.
  • the deck board 10 has a first end 11 and a second end 12.
  • the deck board 10 may comprise about a 5/8"x4"x40" board.
  • the stringers 14, 15 may comprise about a 5/8"x4"x24" board.
  • Between the bottom stringers 14 and upper stringers 15 are six 4"x4"x5/8" boards on blocks 16 on the outside of the long or 40 inch side and with three 4"x4"x4" blocks 17 in the inside of the center of the short or 24" side, constituting a type of block pallet. Because this pallet is to be a half pallet, the number of stringers, blocks and deck boards is reduced accordingly so that the pallet measures 40" by 24".
  • the upper stringers 15 and the lower stringers 14 are each secured to a block 16 or 17 by a dowel or dowels 50.
  • Blocks 16 are located at the corners and in the middle of the long sides.
  • Blocks 17 are in the middle of the short side as well as in the overall middle of the half pallet.
  • Blocks 16 and 17 are positioned between upper stringer 15 and lower stringers 14 so that the sides of blocks 16 and 17 are flush or even with the sides of the deck boards, upper stringer 15 and lower stringer 14, i.e., the edges of each are in the same plane.
  • Each stringer 14, 15 has a plurality of predrilled bores 31 defined therein.
  • the terms bore and opening are herein used synonymously.
  • the dowel 50 can comprise a first portion 52 and a second portion 54.
  • the dowel may have a plurality of dowel sections, a first section 56, middle sections 58, 60, and last section 62. While in a preferred embodiment, the dowel 50 has two middle sections 58, 60; other embodiments may have no middle section, one middle section, or three or more middle sections.
  • the first and last sections 56, 62 may have side walls 64, 66 and end walls 68, 70, respectively.
  • Each of the middle sections 58, 60 may have side walls 72, 74 and step walls 76, 78, respectively.
  • each of the sections 56, 58, 60, 62 are contiguous to another section 56, 58, 60, 62.
  • the sidewalls 64, 66, 72, 74 define a cross-sectional size for their respective sections 56, 58, 60, 62.
  • the cross-sectional size of the sidewalls 64, 66, 72, 74 decreases as one progress from the first section 56 to the last section 62 in a number of steps.
  • the cross-sectional size of the sidewalls is greatest in a middle section (not shown).
  • the cross-sectional size of the sidewalls 64, 66, 72, 74 may be any suitable size.
  • each individual dowel section 56, 58, 60, 62 may vary considerably. In one embodiment, the dowel section 56, 58, 60, 62 with the smallest cross-sectional size is as long or longer than the length of any of the other dowel sections.
  • the dowel 50 may have some sections, e.g., 58, 60 or all sections 56, 58, 60, 62 that have grooves 80.
  • the dowel 50 may have other configurations, such as the dowel shown and described in U.S. Patent No. 6,267,527 , which is hereby incorporated by reference. While the above described dowel is preferred, it is anticipated that a dowel of solely cylindrical dimensions may also be used.
  • the bores for the dowels are drilled within zero, i.e., on the edge, to 1 ⁇ 2 inch, preferably 3/16 to 1/2 inch from the edge of the stringer and block, and more preferably 5/16 inch from the edge. Further, the bore can be drilled adjacent and touching one another so that the dowels can be positioned where needed, and as close to one another as necessary, without splitting the wood, as happens if nails are driven in too close together. Because the bore is drilled, this can be accomplished without splitting the wood, as would happen if nails were to be used.
  • blocks 16 and possibly blocks 17 are positioned so that the grain of the blocks is vertical. Blocks 17 may have a horizontal grain. In this manner, when glue is applied to the bore, the glue will migrate further into the block along the grain lines, for a more secure holding action. Further each of the blocks will be strengthened by the vertical grain. With a vertical grain, the blocks will also be later able to withstand a hit from the fork tines, as the vertical grain will be less likely to split upon impact.
  • the dowel 50 connects the stringers 14, 15 to the deck board 10 and the block 16.
  • the opening 31 of the deck board 10 is configured to receive the shank 52 of the dowel 50.
  • the opening 31 is preferably sized so that it is slightly smaller than the dowel shank portion 52 that it is configured to receive.
  • the dowel 50 then fits snugly into the opening 31.
  • the dowel 50 and the opening 31 form a friction fit. This receipt of the dowel shank 52 in a cinching fashion is achieved by machining the bore of the stringers 14, 15 to a smaller cross section area in the stringer or second wood piece. Thus, the bore cinches or grabs the dowel portion 52.
  • the bore or opening 31 in the first piece of wood or deck board is machined so that the opening 13 in deck board 10 is the same size or larger than dowel 50 cross sectional area.
  • the dowel 50 fits into the bore of the stringers 14, 15 in a cinching and grabbing fashion caused by the compression of the dowel surface by the surrounding wood on the surface of the pilot hole for a tight grip caused by the ratio of the dowel cross sectional area to the pilot hole cross sectional area being greater than one.
  • the forgoing allows for the dowel to act like a nail in pulling the first piece of wood tightly to the second piece of wood.
  • the dowel 50 can be substantially or fully inserted into the opening 13 and bore of the stringers 14, 15 through the use of a suitable pounding device (not shown), such as a hammer or mallet, or through manual strength.
  • the dowel 50 may fit snugly into the selected opening 13 and bore.
  • the dowel 50 and the opening 13 and bore 31 forms a friction fit.
  • adhesive is used in the joinder of the stringers, deck boards and blocks.
  • the application of adhesive material (not shown) to the stringers 14, 15 and deck boards 10 is such that some of the adhesive material is disposed in the bores and openings 13.
  • the adhesive material which may be a mechanical or chemical adhesive, may be applied to the surfaces of the stringers 14, 15, deck boards 10 or side walls of the dowels 50 to strengthen or augment the connection.
  • the adhesive material is preferably PVA, but can be any material that would adequately connect the parts of the pallet together, such as, e.g., elastomers, hot melts, urethane, epoxy, PRF, or urethane/isocyanate.
  • the adhesive is applied to the stringers 14, 15, and deck boards 10 such that some of the adhesive is disposed in the bores of the stringers and openings 13 prior to the insertion of the dowels 50.
  • the adhesive material may also be applied to the side walls of the dowel 50.
  • the adhesive applied to the dowel 50 is thinned to allow for more ready insertion and connection.
  • the adhesive material may be at partly scraped from the side walls to accumulate on the end wall and step walls.
  • the opening of both the stringer and the block is sized to be slightly smaller than the dowel in diameter so that the cinching action takes place.
  • the half pallet described herein consists essentially of wood and adhesive. In the most preferred embodiment, the pallet consists of wood and adhesive.
  • the use of a wooden dowel 50 with wooden stringers 14, 15, and deck boards 10 and blocks 16 and 17, along with adhesive, can, through construction, create a half pallet that is lightweight and yet exceeds industry requirements for static strength, stiffness, and resistance to rough handling.
  • the pallet described herein can be substantially lighter and stronger than standard half pallets that employ nails or other metal fasteners.
  • the weight of the dowel 50 being inserted is offset by the amount of wood drilled out of the deck boards 10 and stringers 30. With the use of nails, there is no offset. With the use of a large number of nails in typical pallets (sometimes over one hundred for a used pallet), this weight difference can become substantial.
  • the pallet described herein can be made with kiln dried wood, which is lighter than wet or green wood.
  • Typical pallets are made of wet or green wood because hammering in nails in dry wood can cause damage to the wood, such as checking, and result in a damaged or weakened pallet.
  • the pallet described herein can be constructed of wood that is kiln dried. Preferably, the wood is less than 15% moisture and more preferably between 9 and 12% moisture.
  • the pallet described herein can be substantially lighter than typical pallets, about 28lbs, where other commercial half-pallets are 38lbs or more. Being lighter, the half pallets of the subject invention are less likely to cause injury to workers during transport, and also yield substantial savings in fuel economy during transport.
  • the half pallet of the subject invention has an additional 2 or 3 stringers 18 added as a bottom support (see Figs 6 and 7 ). These bottom stringers permit the half pallet to be racked, i.e., stored on top of another loaded pallet. It is not necessary to add more dowels or change any other feature of the pallet.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Pallets (AREA)
EP14193852.2A 2014-01-28 2014-11-19 Vollholz-Halbpalette Withdrawn EP2899133A1 (de)

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US14/166,311 US20150210425A1 (en) 2014-01-28 2014-01-28 All wooden half pallet

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EP2899133A1 true EP2899133A1 (de) 2015-07-29

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