The present invention relates to a pallet foot of overall hollow and tapered shape for being fixed on the back of a platform, where the widest open base of the pallet foot has a horizontal flanged edge for meeting the surface of the back of said platform. Further, the present invention relates to a method for fixating a pallet foot onto a platform.
Pallets of various kinds are commonly used within transporting as well as for storing of goods. As they are frequently made out of wooden material, pallets are both relatively expensive to manufacture, and heavy. Their considerable weight means they are hard to handle and may cause back-injuries to a user upon lifting or moving it. Another disadvantage coming with a wooden pallet is that the fork of a fork lift truck can enter the pallet from one direction only. Also, during transports pallets represent a large proportion of the total weight resulting in undesirable high fuel consumptions. For these and other reasons it has previously been suggested to replace traditional pallets with goods-handling pallets of lighter materials. In U.S. Pat. No. 5,154,297 is shown a plastic foot assembly which may be attached to a box in order to simulate a pallet. Further, US2005/0229819 shows plastic deck support structures with prongs arranged to engage the lower surface of a deck so that the support structure is attached thereto. Another example of a plastic pallet foot is proposed in GB2126560 where hollow body is designed to be fixed on the back of a platform where the platform may be a sheet of cardboard or a paper box. The aforementioned pallet support structures are made out of plastic which is undesirable from an environmental point of view. The pallet feet of both U.S. Pat. No. 5,154,297 and GB2126560 are meant to be attached onto the cardboard by means of gluing with an adhesive that is prepared on the pallet foot. If gluing is done in dirty or dusty environment it may occur that such dirt or dust gets in between the adhesive surface and the cardboard leading to insufficient fixation. In damp, wet or hot environments it might also occur that the adhesive comes loose of the cardboard and the pallet foot detaches.
In view of the foregoing, improved pallet feet are desirable.
It is a primary object of the present invention to provide an improved pallet foot and a simplified and effective method for fixating the same onto the back of a platform.
Further objects of the invention is to provide a pallet foot that:
Additional objects of the invention will become evident from the following description and the claims.
The objects of the invention are accomplished by a pallet foot arranged to be attached onto a penetrable platform, where the pallet foot has an overall hollow shape and comprises an upper base portion with a stopping surface arranged to meet the surface of said platform, and wherein said base portion comprises a plurality of attachment members for penetrating the platform.
It is understood that by “penetrable” means a material which can be penetrated by the attachment members, for instance cellulose- or paper based materials such as cardboard, paperboard or corrugated fiberboard. It is further understood that a platform may refer to for instance a sheet of paper or the bottom of a paper box.
According to one aspect of the invention the attachment members are extending in a direction substantially perpendicular to said stopping surface. According to one embodiment if the invention the stopping surface is a horizontal flanged edge arranged to meet the surface of the back of the platform. The horizontal flanged edge is surrounding an opening at the upper base portion of the pallet foot, and comprises a plurality of vertically protruding attachment members for penetrating said platform.
Thanks to the protruding attachment members the pallet foot may be attached onto a platform in an instant, without the risk of having dust, dirt or surrounding circumstances like humidity or temperature deteriorate the fixating ability of the foot. The attachment members safeguard that the pallet foot is fixated to the platform in a mechanically stable way and prevent it from detaching due to wet or warm surroundings. In a preferred form the pallet foot has a tapered and overall hollow shape, and is open at the upper portion (i.e. the portion which is intended to meet a platform). Preferably the pallet foot has a shape of a truncated pyramid, and said opening has a substantially tetragonal cross-section. Thanks to the hollow shape a plurality of pallet feet may be stacked together which enables efficient storing.
Preferably, the pallet foot according to the invention is made out of a cardboard material, but it is also possible to manufacture it from plastic material such as polypropylene. Preferably, the platform to be penetrated is in the form of a cardboard sheet or a paper box, meaning if the pallet foot is made in paper based material the entire pallet will be made out of the same material, and the assembly may be recycled as one entity which provides simplicity in the recycling procedure as well as it is eco-friendly.
A pallet made out of paper material, alternatively out of paper and plastic material, will provide a lightweight construction suitable for substantially reduced loading weights. The pallet foot according to the invention may be instantly attached to any kind of penetrable platform which makes it universal and user-friendly. Thanks to the invention is provided a simple way of constructing a pallet very quickly and inexpensively. A pallet that is constructed by having attached a number of pallet feet to the back can also be entered by the forks of a fork lift truck from any side.
According to another aspect of the invention the lower portion of the pallet foot (i.e. the portion which is opposite to the upper portion) comprises at least one, preferably two, through grooves at the respective sides of the pyramidal pallet foot. Said through grooves are arranged to match stabilizing beam members onto which pallet feet may be positioned. Preferably each through groove is substantially wedge shaped so that a matching beam is readily fastened upon placing the pallet feet thereupon. Obviously said through grooves may comprise any other suitable shape or design, such as having a snap-in function allowing for a pallet foot to be attached to a beam member or underlying structure.
The invention will hereinafter be described in more detail with reference to the accompanying drawings. The following descriptions should be considered as preferred forms only, and are not decisive in a limiting sense.
a-c: show examples of different attachment members according to the present invention,
d illustrates in an exemplified way attachment members according one embodiment of the invention penetrating the surface of a platform,
a-b: show pallet feet attached to the underside of a platform thus forming a pallet,
a: is a perspective view of a pallet foot according to another embodiment of the invention,
b: is a perspective view of a pallet foot according
a: is another support device according to the invention, and
b: is a detailed view according to Xb in
It is understood that the terms “horizontally” and “vertically” is to be put in relation to a platform 8 onto which a pallet foot 1 is to be attached. Horizontal then refers to the plane which is defined by such a platform 8, and vertical refers to a direction perpendicular to the plane which is defined by the platform 8.
The horizontal flanged edge 3 comprises a plurality of substantially vertically protruding attachment members 2 for penetrating said platform 8. Preferably said attachment members 2 are distributed evenly around the circumference of said edge 3, so that each one of the four sides of the pallet foot 1 according to
It is understood that the term “permanently” is used for illustrating that the attachment members 2 of a pallet foot 1 are intended to prevent the pallet foot 1 from detaching from a platform 8 once attached thereto, implying that each pallet foot 1 is preferably intended for single-use. If for instance said attachment members 2 are broken the pallet foot 1 may obviously become separated from a platform 8, but that this would lead to that the pallet foot 1 might not be used further.
A pallet foot 1 according to the present invention is to be fixated onto a platform 8 in the following way. A penetrable platform 8, preferably a pre-cut sheet of cardboard, and at least four pallet feet 1 are provided, one pallet foot for each corner of the platform 8. An operator directs a pallet foot 1 so that the wider upper base 6 faces the underside 81 of the platform 8 and the horizontal flanged edge 3 meets the undersurface of said platform. Preferably the underside 81 (see
In a preferred method according to the invention, the operator will cause penetration of said attachment members 2 by pressing or hitting the foot 1 against the underside 81 of the platform when said foot 1 is rightfully positioned and said stopping surface 3 is arranged to meet the surface 81 of the platform 8. Hitting the foot 1 against the platform 8 will lead to that the preferably pointy attachment members 2 are instantly forced into and through the platform 8, penetrating it, thus fixating the pallet foot 1. This way a number of feet 1 are attached onto the underside 81 of a platform or a sheet providing an easy and instant way of forming a pallet.
It is to be understood that by penetrate means “to at least partially pass through the thickness” of the cardboard. Preferably the attachment members 2 are designed so that their total height h corresponds at least to the thickness t of the platform 8 which is about to be penetrated, however attachment will work also if the total height h is less than or larger than said thickness t. Preferably the cardboard sheet is pre-cut to a squared shape, adapted in size for use in logistics and storing, but it is of course possible to fixate a pallet foot 1 according to the invention onto any type of sheet, having any contour, or onto the bottom side of a paper box.
The pallet foot 1 according to the example shown in
Preferably a pallet foot 1 is made out of paper material, for instance manufactured by means of press-shaping. It is, however, possible to produce the pallet foot out of injected plastic material such as polypropylene, in which case the pallet foot body may be molded into a desired shape, in a preferred form in a shape corresponding to the appended drawings.
In
Further the pallet foot 1 preferably has a width D in the range between 90-160 mm, more preferred between 110-140 mm, even more preferred between 120-130 mm. The attachment members 2 are protruding substantially vertically from the stopping surface 3 with a height h.
The foot 1 comprises a through groove 4 at the small base portion 5 of the foot 1. According to one example of the invention the groove 4 is substantially U-shaped and comprises a stopping member 41 at one end. As will be described in more detail in connection to
Referring now to
A person skilled in the art realizes that the grooves 4, 4′ may have various dimensions, all depending on the purpose of use. For instance, if the pallet feet 1 of a pallet comprise two perpendicular through grooves 4, 4′ (see
Further, the grooves could be adjusted to match the dimensions of the sides of a pallet collar so that a platform with pallet feet 1 may be stacked thereupon, e.g. with grooves 4, 4′ placed so that they surround the walls of an underlying pallet collar. It is also understood that the lower portion 5 of the pallet collar 1 may be designed to match any underlying object, such as a conventional pallet, various models of pallet collars or the like, without departing from the scope of the claims.
Indeed, an attachment member 2 may be designed with a height h larger than the thickness t of the cardboard 8 to be penetrated, which would lead to that a portion 21 of the attachment members 2 will protrude through the upper side 82 of the platform when affixed thereto. The protruding attachment members 2 may thus interact with and stabilize objects, for instance paper boxes, placed and stored upon the platform of a pallet, and prevent stored objects from undesirable moving or sliding.
Preferably an attachment member 2 is provided with at least one retaining means, for instance in the form of barb elements 22, which ensure that the attachment member 2, once having penetrated a platform sheet 8, will stick thereto and not come loose from its surface.
Looking now at
An initial position A is shown where an attachment member 2 comprising a pair of retaining means 22 is in a neutral disposition and approaches the undersurface 81 of the fiberboard 8. In a subsequent position B the attachment member 2 is shown after having punctuated the lower surface 81 of the fiberboard, partially having penetrated through the cardboard 8 thickness. In this position B only the pointy top portion 21 of the attachment member 2 has pierced through the undersurface 81, while the barb elements 22 still extends out from the undersurface 81. As is seen in position B the barb elements 22 are arranged to partially flex (slightly bend) as the attachment member 2 penetrates the cardboard 8, leading to that penetration is facilitated. The third position C shown herein illustrates an attachment member 2 which has advanced through the paperboard thickness to such an extent that the entire tip portion 21 and the barb elements 22 are enclosed within the fiberboard 8 interior. In this position C the barb elements 22 have flexed back to a neutral unfolded outline and will thereby prevent the attachment member 2 from rearward movement and detach from the cardboard 8. The final position D shown in the given example of
In
As is seen herein, a pallet of the shown kind can be entered by the forks of a fork lift truck from any side.
a shows another embodiment according to the invention, wherein a pallet foot 1 comprises a compact design. The compactness of the pallet foot 1 mainly resides in the height H being short in relation to the width D compared to the embodiment shown in
The compact pallet foot 1 is shown from below in
a-b show yet another example of a support structure 94 according to the invention, here in the shape of a support strip 94 comprising an L-shaped cross section. Preferably the support strip 94 is made out of hard plastic material, however any suitable material may be used. As seen in the encircled enlargement in
The function of the support strip 94 will now be described. A pallet platform 8 is provided with a number of pallet feet 1 each foot comprising a slot 42. In the following example the platform is provided with a total number of six feet arranged as shown in
It is understood that the objects of the present invention set forth above, among those made apparent by the detailed description, shall be interpreted as illustrative and not in a limiting sense. Within the scope of the following claims the set-up of various alterations of the present invention may be possible, for instance a different design of the grooves 4, 4′ and/or the underlying beam element 9.
Number | Date | Country | Kind |
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0950753-4 | Oct 2009 | SE | national |
1050294-6 | Mar 2010 | SE | national |
Filing Document | Filing Date | Country | Kind | 371c Date |
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PCT/SE10/51101 | 10/13/2010 | WO | 00 | 7/3/2012 |