Pallet and Methods for Making Same
A pallet includes a platform having a first side for carrying an object thereon and a second side opposite the first side, and a first elongate rectangular leg member positioned on the second side of the platform proximate a first end of the platform, and a second elongate rectangular leg member positioned on the second side of the platform proximate a second end of the platform opposite the first end. The platform and the leg members can be integrally formed from a single sheet of material, such as corrugated paper. The legs can include openings for receiving support members, such as paper cones or paper tubes.
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This application claims priority to U.S. Provisional Application No. 60/747,626, filed May 18, 2006.
TECHNICAL FIELD AND BACKGROUND OF THE INVENTIONThe invention relates to pallets for supporting objects and methods for making same. One pallet according to a preferred embodiment of the invention has conical legs that allow for one pallet to be stacked on and nested within another pallet. The legs are made of paper and include a feature that facilitates the separation of nested pallets. Another preferred embodiment of the invention includes a pallet that can be made from a single piece of corrugated paper.
A number of pallets are known. For example, U.S. Pat. No. 5,730,067 to Kohlhaas discloses a nestable pallet comprising an apertured single deck with a number of leg members configured as hollow truncated cones. The deck can be constructed of heavy paper board, corrugated cardboard, wood or plywood, and the legs are made of steel sheet metal or hard plastic. The legs are open at the top, and closed off at the bottom by a generally flat bottom section.
SUMMARY OF THE INVENTIONIt is an object of the present invention to provide a pallet that can be made of paper, and is capable of carrying substantial loads.
It is another object of the present invention to provide a pallet with legs that can be made of paper that are open at both ends.
It is yet another object of the present invention to provide a pallet that can be nested with another pallet and easily separated from the other pallet.
It is yet another object of the present invention to provide a pallet that can be made of a single sheet of material, such as corrugated paper.
These and other objects of the present invention are achieved in the preferred embodiments of the invention described below. One of the preferred embodiments of the invention is a method for making a pallet that includes the steps of providing a blank sheet of material having a first plurality of fold lines proximate a first end of the blank and a second plurality of fold lines proximate a second end opposite the first end of the blank, and folding the blank along the first plurality of fold lines to form a first leg member proximate the first end of the blank, and along the second plurality of fold lines to form a second leg member proximate the second end of the blank, such that a remaining portion of the blank defines a platform supported by the first and second leg members.
According to another preferred embodiment of the invention, the blank sheet of material is paper.
According to another preferred embodiment of the invention, the first and second pluralities of fold lines include substantially parallel first, second, third and fourth fold lines, and each of the first and second leg members include an elongate rectangular member for supporting the platform above a surface.
According to another preferred embodiment of the invention, an area intermediate the first end of the blank and the first fold line of the first plurality of fold lines is adhered to an area of the blank intermediate the fourth fold line of the first plurality of fold lines and the first fold line of the second plurality of fold lines.
According to another preferred embodiment of the invention, first opening is formed intermediate the first end of the blank and the first fold line of the first plurality of fold lines, and a second opening is formed intermediate the second and third fold lines of the first plurality of fold lines and positioned such that the first and second openings are axially aligned when the blank is folded along first, second, third and fourth fold lines of the first plurality of fold lines.
According to another preferred embodiment of the invention, a support member is positioned within the aligned first and second openings for strengthening the first leg member.
According to another preferred embodiment of the invention, the support member is a paper cone or a paper tube.
According to another preferred embodiment of the invention, a first opening is formed intermediate the first and second fold lines of the first plurality of fold lines of the blank, and a second opening is formed intermediate the third and fourth fold lines of the first plurality of fold lines of the blank. A third opening is formed intermediate the first and second fold lines of the second plurality of fold lines of the blank, and a fourth opening is formed intermediate the third and fourth fold lines of the second fold lines of the blank. The first, second, third and fourth openings are axially aligned when the blank is folded along the first and second pluralities of fold lines such that the first and second leg members define an area for receiving at least one fork of a forklift.
According to another preferred embodiment of the invention, perforated sections are formed proximate the first, second, third and fourth openings of the blank such that the perforated sections are separable from the blank to enlarge the first, second, third and fourth openings.
According to another preferred embodiment of the invention, a third leg member is attached on the platform intermediate the first and second leg members.
According to another preferred embodiment of the invention, the first and second pluralities of fold lines each include substantially parallel first, second, third, fourth, fifth and sixth fold lines, and each of the first and second leg members include an elongate rectangular member for supporting the platform above a surface. The platform includes a first wing section extending outwardly from the first leg member and a second wing section extending outwardly from the second leg member.
According to another preferred embodiment of the invention, the first and second leg members are mounted on a substantially flat base member. The base member can include at least one opening for receiving a pallet jack.
According to yet another preferred embodiment of the invention, a pallet includes a platform having a first side for carrying an object thereon and a second side opposite the first side, and a first elongate rectangular leg member positioned on the second side of the platform proximate a first end of the platform, and a second elongate rectangular leg member positioned on the second side of the platform proximate a second end of the platform opposite the first end.
According to another preferred embodiment of the invention, the platform and the first and second leg members are integrally formed from a single sheet of paper.
According to another preferred embodiment of the invention, the first leg member includes at least four walls formed by making at least four folds proximate a first end of the sheet of paper, and the second leg member includes at least four walls formed by making at least four folds proximate a second end of the sheet of paper opposite the first end.
According to another preferred embodiment of the invention, the first leg member is coextensive with the first end of the platform, and the second leg member is coextensive with the second end of the platform.
According to another preferred embodiment of the invention, a third elongate rectangular leg member is mounted on the second side of the platform at a position intermediate the first and second leg members, and the first, second and third leg members are substantially parallel.
According to another preferred embodiment of the invention, a substantially flat base member is attached to the first and second leg members for positioning on a surface, and the base member includes at least one opening for inserting a pallet jack therethrough.
According to another preferred embodiment of the invention, the pallet is made of corrugated paper. The platform and the first and second leg members can be corrugated in one direction, while the base member is corrugated in the opposite direction.
According to another preferred embodiment of the invention, a plurality of support members, such as a paper tubes and/or cones, are positioned in the first and second leg members in substantially perpendicular relation to the platform.
According to another preferred embodiment of the invention, the first leg member includes a first opening, and the second leg member includes a second opening aligned with the first opening on an axis substantially parallel with the platform such that at least one fork of a fork lift can be inserted within the first and second openings.
According to another preferred embodiment of the invention, each of the first and second leg members includes a first wall attached and parallel to the platform, a second wall extending perpendicularly from the first wall, a third wall extending perpendicularly from the second wall and parallel to the platform for supporting the platform on a surface, and a fourth wall extending perpendicularly from the third wall and connecting the third wall to the platform.
According to another preferred embodiment of the invention, the second and fourth walls of the first and second leg members each include a flap section that is at least partially removable to define an opening for receiving at least one fork of a fork lift.
According to another preferred embodiment of the invention, the platform includes a first wing section extending outwardly from the first leg member, and a second wing section extending outwardly from the second leg member.
Some of the objects of the invention have been set forth above. Other objects and advantages of the invention will appear as the invention proceeds when taken in conjunction with the following drawings, in which;
A pallet according to a preferred embodiment of the invention is illustrated in
The platform 12 is formed of double wall corrugated paper having a thickness of 6.5 mm, with nine openings 14 for receiving the legs 22. Each opening 14 has a diameter of 95 mm.
As shown in
An adhesive, such as polyvinyl acetate (PVA) glue is sprayed or spread around the outer rim of the large diameter end 24 of the legs 22. The legs 22 are then pushed down through the openings 14. As shown in
As shown in
As shown in
In addition to facilitating separation of nested pallets 10, 10′, the bull nose 28 also adds radial and axial strength to the leg 22, which compensates for the absence of a bottom panel in the leg 22, enabling the pallet 10 to withstand heavier loads. Preferably, the pallet 10 can support an evenly distributed mass of about 600 kg. Furthermore, the bull nose 28 provides a smooth surface at the bottom of the leg 22 that facilitates sliding movement of the pallet 10 on a supporting surface such as the ground or floor.
A pallet according to another preferred embodiment of the invention is illustrated in
Each cone 122a, 122b has flared portions 123a, 123b, respectively, extending outward from the large diameter ends 124a, 124b of the cones 122a, 122b. An adhesive, such as polyvinyl acetate (PVA) glue, is sprayed or spread onto the flared portion 123a of the outer cone 122a, which is then pressed on the lower surface of the platform 112 of the pallet 100. Adhesive is sprayed at the inner surface of the small diameter end 126a of the outer cone 122a within the area between the bull nose 128a and the sidewall of the cone 122a. Adhesive is placed on the flared portion 123b of the inner cone 122b, and the inner cone 122b is positioned on top of the outer cone 122a, such that the flared portion 123b of the inner cone 122b rests on the upper surface of the platform 112. The small diameter end 126b of the inner cone 122b contacts the adhesive in the crevice of the bull nose 128a of the outer cone 122a to adhere the outer cone 122a and the inner cone 122b together. The inner cone 122b does not have a bull nose.
As shown in
As shown in
The pallet 100 can be made of corrugated paper, or other suitable material including moisture resistant paper board. It should be noted that the term “paper” as used throughout this application refers generally to all kinds of paper, including cardboard.
A pallet according to another preferred embodiment of the invention is illustrated in
The platform 212 has a top side 213 for carrying objects, and an under side 214 opposite the top side 213. While the platform 212 is preferably rectangular as shown in
As shown in
The first and second leg members 201, 202 each have four walls 201a-d, 202a-d, respectively. The third leg member 203 has a total of five walls 203a-e. While the leg members 201, 202, 203 are preferably rectangular, they can be a variety of shapes, such as conical, triangular or other polygonal shape. In addition, the number of leg members can be varied.
The first walls 201a, 202a, 203a of the leg members 201, 202, 203 lie flat on the under side 214 of the platform 212. The second walls 201b, 202b, 203b extend perpendicularly from the first walls 201a, 202a, 203a and the third walls 201c, 202c, 203c extend perpendicularly from the second walls 201b, 202b, 203b. The fourth walls 201d, 202d, 203d extend perpendicularly from the third walls 201c, 202c, 203c back toward the underside 214 of the platform 212. The fifth wall 203e of the third leg member 203 extends perpendicularly from the fourth wall 203d and lies parallel to and flat on the first wall 203a.
Each of the leg members 201, 202, 203 can have a pair of rectangular openings 205 formed in the second and fourth walls 201b, 201d, 202b, 202d, 203b, 203d of the leg members 201, 202, 203 and aligned on a horizontal axis that is substantially parallel with the platform 212. As such, fork-lift forks can be inserted through the openings 205 to engage and lift the pallet 200. Furthermore, the pallet 200 can be accessed by fork-lift forks from all four sides of the pallet by either inserting the fork-lift forks through the openings 205 in the leg members 201, 202, 203, or by insertion of forks in the space 221 between the first and third leg members and the space 223 between second and third leg members.
Each of the leg members 201, 202, 203 can have a plurality of openings 206 formed on the third wall 201c, 202c, 203c of the leg members 201, 202, 203. A support member, such as a conical paper tube 207, can be positioned within each of the openings 206. The tubes 207 are positioned within the openings 206 of the leg members 201, 202, 203 such that the tubes 207 reside in perpendicular relation to the platform 212, as shown in
The leg members 201, 202, 203 can be positioned directly on a ground surface and thereby support the platform 212 above the ground surface. Alternatively, the leg members 201, 202, 203 can be mounted on a substantially flat base member 220, as shown in
A preferred method of making the pallet 200 is illustrated in
As shown in
As shown in
The third leg member 203 is a separate piece that can be attached at the center for the sheet 222 between the first end 215 and second end 216. As shown in
When the first and second leg members 201, 202 have been formed, the perforated sections 225 can be partially detached therefrom to form flaps that can be folded inwardly into the leg members 201, 202 to form the openings 205, shown in
A pallet according to yet another preferred embodiment of the invention is illustrated in
The platform 312 has a top side 313, shown in
Each of the three leg members 301, 302, 303 are rectangular, and extend across the width of the platform 312, as shown in
The first walls 301a, 302a, 303a of the leg members 301, 302, 303 lie flat on the under side 314 of the platform 312. The second walls 301b, 302b, 303b extend perpendicularly from the first walls 301a, 302a, 303a and the third walls 301c, 302c, 303c extend perpendicularly from the second walls 301b, 302b, 303b. The fourth walls 301d, 302d, 303d extend perpendicularly from the third walls 301c, 302c, 303c back toward the underside 314 of the platform 312, as shown in
The platform 312 includes wing sections 315a, 316a at opposite ends 315, 316, respectively, as shown in
Each of the leg members 301, 302, 303 can have a plurality of openings 306 formed on the third wall 301c, 302c, 303c of the leg members 301, 302, 303. A support member, such as conical paper tubes 307, can be positioned within the openings 306. The tubes 307 are positioned within the openings 306 of the leg members 301, 302, 303 such that the tubes 307 reside in perpendicular relation to the platform 312, as shown in
The leg members 301, 302, 303 can be positioned directly on a ground surface and thereby support the platform 312 above the ground surface. Alternatively, the leg members 301, 302, 303 can be mounted on a substantially flat base member 330, as shown in
A preferred method of making the pallet 300 is illustrated in
As shown in
As shown in
An adhesive can be applied to the sheet 322 to attach wall 301a thereto, as shown in
The third leg member 303 is a separate piece that can be attached at the center for the sheet 322 between the first end 315 and second end 316 of the platform 322. The third leg member 303 can be held in place on the sheet 322 by an adhesive 340 placed on the first wall 303a of the leg member 303 or the sheet 322. Alternatively, other attachment means can be employed such as staples, nails or other fasteners.
Yet another alternative embodiment of the invention is illustrated in
A pallet according to yet another embodiment of the invention is illustrated in
A pallet and methods for making same are disclosed above. Various embodiments of the invention can be made without departing from its scope. Furthermore, the foregoing description of the preferred embodiments of the invention and the best mode for practicing the invention are provided for the purpose of illustration only and not for the purpose of limitation—the invention being defined by the claims.
Claims
1. A method for making a pallet comprising the steps of:
- (a) providing a blank sheet of material having a first plurality of fold lines proximate a first end of the blank and a second plurality of fold lines proximate a second end opposite the first end of the blank; and
- (b) folding the blank along the first plurality of fold lines to form a first leg member proximate the first end of the blank, and along the second plurality of fold lines to form a second leg member proximate the second end of the blank, whereby a remaining portion of the blank defines a platform supported by the first and second leg members.
2. A method according to claim 1, wherein the blank sheet of material comprises paper.
3. A method according to claim 1, wherein each of the first and second pluralities of fold lines comprise substantially parallel first, second, third and fourth fold lines, and each of the first and second leg members comprise an elongate rectangular member for supporting the platform above a surface.
4. A method according to claim 3, further comprising the step of adhering an area intermediate the first end of the blank and the first fold line of the first plurality of fold lines to an area of the blank intermediate the fourth fold line of the first plurality of fold lines and the first fold line of the second plurality of fold lines.
5. A method according to claim 3, further comprising the steps of:
- (a) forming a first opening intermediate the first end of the blank and the first fold line of the first plurality of fold lines; and
- (b) forming a second opening intermediate the second and third fold lines of the first plurality of fold lines and positioned whereby the first and second openings are axially aligned when the blank is folded along first, second, third and fourth fold lines of the first plurality of fold lines.
6. A method according to claim 5, further comprising the step of positioning a support member within the aligned first and second openings for strengthening the first leg member.
7. A method according to claim 6, wherein the support member comprises at least one selected from the group consisting of a paper cone and a paper tube.
8. A method according to claim 3, further comprising the steps of:
- (a) forming a first opening intermediate the first and second fold lines of the first plurality of fold lines of the blank,
- (b) forming a second opening intermediate the third and fourth fold lines of the first plurality of fold lines of the blank;
- (c) forming a third opening intermediate the first and second fold lines of the second plurality of fold lines of the blank;
- (d) forming a fourth opening intermediate the third and fourth fold lines of the second fold lines of the blank; and
- (e) wherein the first, second, third and fourth openings are axially aligned when the blank is folded along the first and second pluralities of fold lines whereby the first and second leg members define an area for receiving at least one fork of a forklift.
9. A method according to claim 8, further comprising the step of forming perforated sections proximate the first, second, third and fourth openings of the blank whereby the perforated sections are separable from the blank to enlarge the first, second, third and fourth openings.
10. A method according to claim 1, further comprising the step of attaching a third leg member positioned on the platform intermediate the first and second leg members.
11. A method according to claim 1, wherein the first and second pluralities of fold lines each comprise substantially parallel first, second, third, fourth, fifth and sixth fold lines, and each of the first and second leg members comprise an elongate rectangular member for supporting the platform above a surface, and further wherein the platform includes a first wing section extending outwardly from the first leg member and a second wing section extending outwardly from the second leg member.
12. A method according to claim 1, further comprising the step of mounting the first and second leg members on a substantially flat base member for positioning on a surface, and wherein the base member includes at least one opening for receiving a pallet jack.
13. A pallet made according to the method of claim 1.
14. A pallet comprising:
- (a) a platform having a first side for carrying an object thereon and a second side opposite the first side; and
- (b) a first elongate rectangular leg member positioned on the second side of the platform proximate a first end of the platform, and a second elongate rectangular leg member positioned on the second side of the platform proximate a second end of the platform opposite the first end.
15. A pallet according to claim 14, wherein the platform and the first and second leg members are integrally formed from a single sheet of paper.
16. A pallet according to claim 15, wherein the first leg member comprises at least four walls formed by making at least four folds proximate a first end of the sheet of paper, and the second leg member comprises at least four walls formed by making at least four folds proximate a second end of the sheet of paper opposite the first end.
17. A pallet according to claim 14, wherein the first leg member is coextensive with the first end of the platform, and the second leg member is coextensive with the second end of the platform.
18. A pallet according to claim 14, further comprising a third elongate rectangular leg member mounted on the second side of the platform at a position intermediate the first and second leg members, wherein the first, second and third leg members are substantially parallel.
19. A pallet according to claim 14, further comprising a substantially flat base member attached to the first and second leg members for positioning on a surface, and wherein the base member includes at least one opening for inserting a pallet jack therethrough.
20. A pallet according to claim 14, wherein the pallet is comprised of corrugated paper, and further wherein the platform and the first and second leg members are corrugated in a first direction, and the base member is corrugated in a second direction opposite the first direction.
21. A pallet according to claim 14, further comprising a plurality of support members positioned in the first and second leg members in substantially perpendicular relation to the platform.
22. A pallet according to claim 14, wherein the first leg member includes a first opening, and the second leg member includes a second opening aligned with the first opening on an axis substantially parallel with the platform whereby at least one fork of a fork lift can be positioned within the first and second openings.
23. A pallet according to claim 14, wherein each of the first and second leg members includes:
- (a) a first wall attached and parallel to the platform;
- (b) a second wall extending perpendicularly from the first wall;
- (c) a third wall extending perpendicularly from the second wall and parallel to the platform for supporting the platform on a surface; and
- (d) a fourth wall extending perpendicularly from the third wall and connecting the third wall to the platform.
24. A pallet according to claim 23, wherein the second and fourth walls of the first and second leg members each include a flap section that is at least partially removable to define an opening for receiving at least one fork of a fork lift.
25. A pallet according to claim 14, wherein the platform includes a first wing section extending outwardly from the first leg member, and a second wing section extending outwardly from the second leg member.
Type: Application
Filed: Jan 22, 2007
Publication Date: Nov 22, 2007
Applicant: CONITEX-SONOCO, LLC (Gastonia, NC)
Inventors: David Wesley Monteith (Charlotte, NC), Jean Francois Ruffet (Gastonia, NC)
Application Number: 11/625,543