Patent Application
20200283192
The present disclosure relates to the field of pallets, and more particularly, to a hybrid pallet.
Pallets are customarily used to transport and store goods. A pallet typically includes a top deck and a bottom deck separated by support blocks. Pallets are used to serve several purposes which include the loading of equipment, and the stacking of items for transportation and storage. A pallet needs to maintain durability to serve the particular purpose for which it is being used.
A pallet includes a plastic top deck, and a bamboo bottom deck. The bamboo bottom deck includes a plurality of bamboo boards. A plurality of support blocks is coupled between the bamboo bottom deck and the plastic top deck, with a gap being formed therebetween for receiving a lifting member.
Each bamboo board may include a plurality of bamboo strips layered together. Each bamboo board may further include a plastic composite added to the plurality of bamboo strips. A direction of each bamboo strip may be orthogonal to a direction of an adjacent bamboo strip.
In other embodiments, each bamboo board may include a top section, a bottom section, and at least one middle section between the top and bottom sections. The top section may include a plurality of bamboo strips layered together, with the plurality of bamboo strips extending in a first direction. Similarly, the bottom section may include a plurality of bamboo strips layered together, with the plurality of bamboo strips extending in the first direction. The at least one middle section may include a plurality of bamboo strips layered together, with the plurality of bamboo strips extending in a second direction that is different from the first direction. The second direction may be orthogonal or crisscrossed with respect to the first direction.
The bamboo bottom deck may include a pair of bamboo end deck boards, a pair of bamboo connector boards extending between the pair of bamboo end deck boards, and an intermediate bamboo connector board extending between the pair of bamboo end deck boards. The intermediate bamboo connector board and the bamboo connector boards may be orthogonal to the bamboo end deck boards. Respective joints between the pair of bamboo end deck boards and the pair of bamboo connector boards may be mitered.
At least one of the support blocks may include an upper surface, a lower surface, and first and second pairs of opposing sides extending between the upper and lower surfaces. One of the sides may have a pocket formed therein for receiving an end of the lifting member so as to allow the pallet to be spun around. At least one clinched nail may extend through one of the bamboo boards and into the pocket in the at least one support block.
At least one of the support blocks may include an upper surface and a lower surface. A first pair of opposing sides extend between the upper and lower surfaces and may have a first opening extending therethrough. A second pair of opposing sides extend between the upper and lower surfaces and may have a second opening extending therethrough, and intersecting with the first opening. At least one clinched nail may extend through one of the bamboo boards and into the first or second opening in the at least one support block.
Each support block may be wood, plastic, wood and plastic composite, or metal. The plastic top deck may be configured as a monolithic plastic top deck. The monolithic plastic top deck may include a plurality of metal strips inserted therein for support, with each metal strip including perforated holes extending therethrough. The perforated holes may extend in a direction that is orthogonal to an upper surface of the plastic top deck.
Another aspect is directed to a method for making a pallet as described above. The method includes forming a plastic top deck, forming a bamboo bottom deck that includes a plurality of bamboo boards, and forming a plurality of support blocks. The method further includes coupling the plurality of support blocks between the bamboo bottom deck and the plastic top deck, with a gap being formed therebetween for receiving a lifting member.
The present description is made with reference to the accompanying drawings, in which exemplary embodiments are shown. However, many different embodiments may be used, and thus the description should not be construed as limited to the particular embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete. Like numbers refer to like elements throughout.
Referring initially to
The support blocks 50, 60 form a gap between the top and bottom decks 30, 40 for receiving a lifting member. The lifting member may be the metal tines of a forklift or pallet jack. The top deck 30 is also known as the cargo layer, and the bottom deck 40 is also known as the base layer.
An exploded view of the hybrid pallet 20 is provided in
The metal strips 32 are perforated with holes 34. The top deck 30 also includes perforated holes 36. The holes 34, 36 do not compromise durability of the top deck 30. If the metal strips were not added for support, then the top deck would need to be thicker to provide the needed support. The perforated holes 34 extend in a direction that is orthogonal to an upper surface of the top deck 30.
The bottom deck 40 includes a pair of spaced apart end deck boards 42, and a pair of spaced apart connector boards 44 extending between the end deck boards 42. The bottom deck 40 also includes an intermediate connector board 46 extending between the end deck boards 42. The connector boards 44 and the intermediate connector board 46 are orthogonal to the end deck boards 42.
Each of the boards 42, 44, 46 in the bottom deck 40 include layered bamboo strips or slats that are cut from a bamboo stem. The bamboo boards 42, 44, 46 are formed by pressing together the layered bamboo strips. A plastic composite may be added to the layered bamboo strips, both of which are pressed together at high temperatures.
To increase durability the bamboo boards 42, 44, 46 may be formed such that each bamboo strip is orthogonal to an adjacent bamboo strip when layered. Alternatively, the bamboo boards 42, 44, 46 may be formed as a ply of bamboo strips layered together in sections. For example, the bamboo boards 42, 44, 46 may each have top and bottom sections and at least one middle section, and a direction of the bamboo strips in the at least one middle section may be crisscrossed or orthogonal to a direction of the bamboo strips in the top and bottom sections.
The joints between the connector boards 44 and the end deck boards 42 may be standard or mitered. In a standard joint, the ends of each connector board 44 butt up against the sides of the end deck boards 42. Alternatively, the ends of the end deck boards 42 butt up against the sides of the each connector board 44. In a mitered joint, the ends of the connector boards 44 and the ends of the end deck boards 42 are joined at 45 degree angles. In addition, the joints between the connector boards 44 and the end deck boards 42 may be stepped (i.e., notched) to further increase durability of the bottom deck 40.
As noted above, the support blocks 50, 60 may be formed out of wood, plastic, wood/plastic composite, or metal. When formed out of a wood plastic composite material, each support block 50, 60 includes, for example, a mixture of wood filler, plastic and paper. An example composition is 20% wood filler, 60% plastic and 20% paper. This example composition is for illustration purposes, and is not to be limiting.
A wood, plastic or wood/plastic composite support block 50, 60 would all generally have a rectangular shape. When the support blocks 50, 60 are formed out of metal, each support block would generally be C-shaped or U-shaped.
The support blocks 50 are in contact with both the end deck boards 42 and either one of the connector boards 44 or the intermediate connector board 46, whereas the support blocks 60 are only in contact with one of the connector boards 44 or the intermediate connector board 46. Support blocks 50 are larger in size as compared to support blocks 60. In other embodiments, the support blocks 50, 60 may be equal in size.
Each illustrated support block 50 includes a pocket or scoop 52 that partially extends from one of the sides 54 of the support block 50 towards an opposing side 56. More particularly, the support block 50 includes an upper surface, a lower surface, and first and second pairs of opposing sides extending between the upper and lower surfaces. The pocket 52 is formed in one of the sides 54. The pocket 52 does not extend all the way through to the opposing side 56. The pocket 52 does not compromise durability. Corners of each support block 50 may be curved or beveled.
The side 54 with the pocket 52 formed therein includes an outer exposed wall that surround the pocket 52. The pocket 52 includes a bottom surface and adjacent side surfaces, with the adjacent side surfaces being non-orthogonal or angled with respect to the outer exposed wall and the bottom surface. Alternatively, the adjacent side surfaces within the pocket 52 may be orthogonal or perpendicular with respect to the outer exposed wall and the bottom surface.
An advantage of the support blocks 50 with a pocket 52 formed therein is that each pocket 52 facilities rotation of the hybrid pallet 20 by a forklift operator. Rotation of a pallet is known as pin wheeling. To pin wheel the hybrid pallet 20, the operator of the forklift uses one of the sharp metal tines of the forklift to contact a pocket 52 of one of the support blocks 50. The pocket 52 allows the tine to grip the hybrid pallet 20 for it to be spun 90 degrees.
The support blocks 60 include openings 62 without compromising durability. In contrast to the pockets 52, a first opening 62 extends all the way through opposing side walls 64, and a second opening 63 extends all the way through opposing side walls 65. More particularly, the support block 60 includes an upper surface, a lower surface, a first pair of opposing sides 64 extending between the upper and lower surfaces and having a first opening 62 extending therethrough, and a second pair of opposing sides 65 extending between the upper and lower surfaces and having a second opening 63 extending therethrough and intersecting with the first opening 62. Corners of each support block 60 may be curved or beveled.
Screws may be used to secure the top deck 30 to the illustrated support blocks 50, 60. Nails may be used to secure the bottom deck 40 to the illustrated support blocks 50, 60. If the support blocks 50, 60 were made out of metal, then screws would be used to secure the bottom deck 40 to the metal support blocks.
When the support blocks 50, 60 are formed from wood, plastic or a wood plastic composite material, the pockets 52 in the support blocks 50 and the openings 62, 63 in the support blocks 60 allow clinch nails to be used. The nail gun is positioned such that a portion of the nail gun is below the bottom deck 40 and a portion of the nail gun is within a pocket 52 or openings 62, 63 such that as the clinch nail is driven into the bottom deck 40 a tip of the clinch nail is exposed within the pocket 52 or openings 62, 63, with the exposed tip then being bent over into the support block 50, 60.
In alternate embodiments, the hybrid pallet 20 may be configured such that the top deck 30 is formed out of bamboo, and the bottom deck 40 is formed out of plastic. The support blocks 50, 60 are not limited to any particular material.
Referring now to
The vast majority of pallets are primarily constructed of materials such as wood and plastic. Wood pallets are advantageous in terms of cost, but can be relatively heavy in weight. Plastic pallets can easily be molded and are more durable and lighter weight than wooden pallets. However, a disadvantage of plastic pallets is that they are more expensive than wooden pallets. The hybrid pallet 20 as discussed above addresses these concerns.
Many modifications and other embodiments of the invention will come to the mind of one skilled in the art having the benefit of the teachings presented in the foregoing descriptions and the associated drawings. Therefore, it is understood that the invention is not to be limited to the specific embodiments disclosed, and that modifications and embodiments are intended to be included within the scope of the appended claims.
This application claims the benefit of provisional application Ser. No. 62/814,358 filed Mar. 6, 2019, which is hereby incorporated herein in its entirety by reference.
| Number | Date | Country | |
|---|---|---|---|
| 62814358 | Mar 2019 | US |
