BACKGROUND
Pallets are often used to store goods for easy shipping. The pallet includes a deck having an upper surface for supporting the goods thereon. The deck is supported above a floor, such as by feet, so that the loaded pallet can be lifted by the tines of a forklift, pallet jack, etc.
When empty, the pallets are stacked on one another and either stored or shipped back to a warehouse or other facility to be reloaded. The stacking height of the empty pallets affects the efficiency of the storing and shipping of the pallets.
Some pallets are “nestable” to decrease the stacking height when empty, i.e. the feet of one pallet can be received in openings through the deck of a lower pallet and partially into the hollow feet of the lower pallet. The decks of the stacked pallets may be very close to one another when nested.
Some pallets include “runners” connecting lower portions of the feet. This can improve the stability of the pallet, especially when being moved by a conveyor. However, the runners prevent the pallets from being nestable.
SUMMARY
A pallet includes an upper deck including an upper support surface having a plurality of elongated recesses formed therein. A plurality of feet are below the upper deck. A plurality of runners connect lower portions of the plurality of feet. The plurality of runners are configured to be receivable in the plurality of elongated recesses formed in the upper surface of the upper deck of an identical pallet.
The plurality of elongated recesses each may include an elongated portion for receiving one of the runners and a foot portion for receiving one of the feet. At least one of the plurality of elongated recesses may include at least one projecting interlocking element projecting upward from the at least one elongated recess. The recesses in the upper deck do not extend below a lower surface of the deck.
The at least one projecting interlocking element may be formed in the elongated portion of the at least one elongated recess or in the foot portion of the at least one elongated recess.
The pallet may be formed as two pieces: an upper portion including the deck and a lower portion including the plurality of feet and the plurality of runners. The lower portion may further include a plurality of lower deck portions formed at upper ends of the feet and secured to an underside of the deck.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a perspective view of a pallet according to a first example embodiment.
FIG. 2 is a bottom view of the pallet of FIG. 1.
FIG. 3 is a top view of the pallet of FIG. 1.
FIG. 4 is a front view of the pallet.
FIG. 5 is a side view of the pallet.
FIG. 6 is a front view of the pallet stacked on an identical pallet.
FIG. 7 is a section view taken along line A-A of FIG. 6.
FIG. 8 is a side view of the stacked pallets of FIG. 6.
FIG. 9 is a section view taken along line B-B of FIG. 8.
FIG. 10 is a top view of the lower portion of the pallet.
FIG. 11 is a bottom view of the lower portion of the pallet.
FIG. 12 is a top view of the upper portion of the pallet.
FIG. 13 is a bottom view of the upper portion of the pallet.
FIG. 14 is a top view of a second example pallet.
FIG. 15 is a bottom view of the pallet of FIG. 14.
FIG. 16 is a top view of a lower portion of the pallet of FIG. 18.
FIG. 17 is a bottom view of the lower portion of FIG. 16.
FIG. 18 is a side view of a pallet according to a third example.
FIG. 19 is a section view taken along line C-C of FIG. 18.
DETAILED DESCRIPTION OF A PREFERRED EMBODIMENT
A pallet 10 according to one embodiment is shown in FIG. 1. The pallet 10 includes a deck 12 supported above the floor by a plurality of supports or feet 14. In this example, the pallet 10 includes three rows of three feet 14. The feet 14 within each row are connected by runners 16 at lower ends thereof. Aligned with each row of feet 14 is a recess 18 formed in the upper surface of the deck 12. Each recess 18 is formed to receive the feet 14 and runners 16 of an identical pallet 10 when stacked on the pallet 10. Each recess 18 includes a foot recess 20 aligned above each of the feet 14 and having an upwardly-projecting interlocking element 22 generally in the center thereof. Each recess 18 also includes an elongated runner recess 24 between the foot recesses 20 and aligned above each runner 16.
In the example pallet 10 shown, the recesses 18 of the outer rows include runner recesses 24 that are narrower than the foot recesses 20, but in the center row the recess 18a includes runner recesses 24a that are as wide as the foot recesses 20 (to accommodate an optional wider runner in the center of the pallet 10). Each of the center runner recesses 24a includes an elongated upwardly-projecting interlocking element 25 generally in the center thereof. The example pallet 10 is a 48″×40″ pallet, but pallets of other dimensions and aspect ratios could also include the features described herein.
FIG. 2 is a bottom view of the pallet 10. As shown, the runners 16 extend across each of the three rows of feet 14. Lower deck portions 28 extend between adjacent pair of feet 14 in a direction perpendicular to the runners 16. The lower deck portions 28 connect upper portions of each of the feet 14. The lower deck portions 28 include ribs that mate with ribs 30 on an underside of the deck 12. The bottom of each foot 14 includes a peripheral rib circumscribing a downwardly open recess 34. Undersides of the runners 16 (which include outer runners 16 and center runner 16a) include ribs extending downwardly. The center runner 16a may be wider than the outer runners 16 (as shown) and may include an elongated recess 36 centered in each center runner 16a and extending from foot 14 to foot 14. The elongated recesses 36 are each configured in size, shape and location to receive one of the interlocking elements 25 therein when stacked on a similar pallet 10.
FIG. 3 is a top view of the pallet 10. FIG. 4 is a front view of the pallet 10. FIG. 5 is a side view of the pallet 10. As shown in FIGS. 4 and 5, the outer (i.e. at the perimeter of the pallet 10) walls of the feet 14 slope inward toward the bottom edges of the feet 14. The other (non-perimeter) walls of the feet 14 are relatively vertical and generally perpendicular to the deck 12.
FIG. 6 is a front view of the pallet 10 stacked on an identical pallet 10. FIG. 7 is a section view taken along line A-A of FIG. 6. As shown, the upper pallet 10 is received securely in the recesses of the lower pallet 10. The feet 14 of the upper pallet 10 are received in the foot recesses 20 of the lower pallet 10. The upwardly-projecting interlocking element 22 in each foot recess 20 is received in the recess 34 of each foot 14.
FIG. 8 is a side view of the stacked pallets 10. FIG. 9 is a section view taken along line B-B of FIG. 8. As shown, the upper pallet 10 is received securely in the recesses of the lower pallet 10. The feet 14 of the upper pallet 10 are received in the foot recesses 20 of the lower pallet 10. The upwardly-projecting interlocking element 22 in each foot recess 20 is received in the recess 34 of each foot 14. This helps to prevent a stack of empty pallets 10 from sliding relative to one another during shipping.
The example pallet 10 is formed in two pieces which are subsequently joined. Other ways could be used to make the pallet 10. In the example pallet 10, a lower portion is integrally molded as a single piece of plastic, such as by injection molding, and includes the feet 14, runners 16, and lower deck portions 28. An upper portion includes the deck 12. The upper portion may be connected to the lower portion via vibration welding, hot plate welding, heat stakes, snap fit connections or other known connection methods.
The lower portion of the pallet 10 is shown in FIG. 10 (top view) and FIG. 11 (bottom view). The upper portion of the pallet 10 is shown in FIG. 12 (top view) and FIG. 13 (bottom view).
FIG. 14 is a top view of a second example pallet 110. The pallet 110 is similar to the pallet 10 of FIGS. 1-13 except as described below or shown in the drawings. Primarily, the pallet 110 includes a deck 112 with recesses 118 extending parallel to the long dimension of the pallet 110. For example, in a 48″×40″ pallet, the recesses 118 extend parallel to the 48″ dimension. Again, the center recess 118a includes an elongated upwardly-projecting interlocking element 125 generally in the center thereof.
FIG. 15 is a bottom view of the pallet 110. Runners 116 extend across each of the three rows of feet 114. Lower deck portions 128 extend between adjacent pair of feet 114 in a direction perpendicular to the runners 116. The lower deck portions 128 connect upper portions of each of the feet 14, in this example, parallel to the shorter (e.g. 40″) dimension of the deck 112. The lower deck portions 128 include ribs that mate with ribs on an underside of the deck 112. The bottom of each foot 114 includes a peripheral rib circumscribing a downwardly open recess. Undersides of the runners 116 (which include outer runners 116 and center runner 116a) include ribs extending downwardly. The center runner 116a may be wider than the outer runners 116 (as shown) and may include an elongated recess 136 centered in the center runner 116a and extending from foot 114 to foot 114. The elongated recesses 136 are each configured in size, shape and location to receive one of the interlocking elements 125 therein when stacked on a similar pallet 110.
FIGS. 16 and 17 are top and bottom views, respectively, of a lower portion of a third example pallet 210, which is shown more completely in FIGS. 18 and 19. The pallet 210 is similar to that of FIGS. 1-13, except as shown in the Figures or described below. Notably, referring to FIG. 16, the pallet 210 includes a plurality of reinforcement rods 240 secured in channels formed in the lower deck portions 228. The reinforcement rods 240 may be metal or a stiffer polymer or composite and they may be solid or have a rectangular (or square) cross section or an I-beam cross section. The reinforcement rods 240 add stiffness to the deck 212.
Referring again to FIG. 16, the lower portion of the pallet includes a plurality of feet 214 extending from the lower deck portions 228 to the runners 216. The lower deck portions 228 extend perpendicularly to the runners 216, as before.
As shown in FIG. 17, the central runner 216a may include elongated recesses 236. FIG. 18 is a side view of the assembled pallet 210. The sloped outer walls of the pallet 210 prevent the pallet 210 from being racked (placed on a rack that only supports the pallet 210 at outer edges of the feet 214). Alternatively, the outer walls could be straight so that the pallet 210 could be racked.
FIG. 19 is a section taken along line C-C of FIG. 18. The reinforcement rods 240 are received in the channels at the upper edges of the lower deck portions 228, above the feet 214 and below the deck 212.
In each of the embodiments, the runners are received in the recesses formed in the upper surface of a deck of an identical pallet stacked therebelow. This provides a more stable stack and a reduced stacking height when empty pallets are stacked. No portion of the feet of the upper pallet extend below the bottom surface of the deck of the lower pallet, or into the feet of the lower pallet, so it may be said that these pallets are not truly “nestable,” but simply provide a moderately reduced stacking height and a more stable stack than pallets without the interlocking features of the runners and upper deck.
In accordance with the provisions of the patent statutes and jurisprudence, exemplary configurations described above are considered to represent a preferred embodiment of the invention. However, it should be noted that the invention can be practiced otherwise than as specifically illustrated and described without departing from its spirit or scope.
Patent Application
20180099779
