MXPA98010463A - Charola de panaderia apila - Google Patents

Abstract

The present invention relates to a tray for stacking a plurality of identical trays with respect to each other, to provide at least three levels of stacking corresponding to different angular positions of trays stacked vertically adjacent to one another, The tray is characterized in that it comprises: a front wall, a rear wall opposite a front wall, two side walls and a rectangular floor connected integrally to the four walls, where the two side walls are mirror images of each other, each wall having a side continuous outer edge at an upper end of each side wall and a discontinuous internal edge spaced from the outer edge forming a discontinuous slot therebetween, each side wall further having a plurality of legs spaced non-uniformly at a lower edge providing stacking levels different when two identical trays are stacked vertically in different angular orientations with respect to one another, and the front and rear walls have a notch adjacent to each side wall in vertical alignment with the leg and the horizontal alignment with the discontinuous slot providing sliding access in the discontinuous slot by the Another tray leg for stacking, the indentation formed as a generally concave indentation with the opposite sides pronounced, wherein the first level of stacking is defined when the adjacent stacked trays are aligned in an identical orientation with respect to each other, one second Stacking level is defined when the adjacent stacked trays are rotated 90 ° with respect to one another and a third stacking level is defined when the adjacent stacked trays are rotated 180 ° relative to one another, the leg integrally formed at the lower ends of the stacking trays. each side wall of the upper tray, and a corresponding number of configured holes formed in the upper ends of each side wall of the lower tray and engageable with respect to the corresponding leg to define the cam surfaces engageable with each other to move the upper tray in a direction towards one of the front and rear walls in response to a wall that rises to allow the upper tray to slide relative to the lower tray to unstack the upper tray from the lower tray.

Description

PACKABLE BAKERY CHARTER DESCRIPTION OF THE INVENTION This invention relates generally to containers and more particularly to baking trays or baskets that can be nested or stacked. Nesting or stacking type containers are well known in the art. In the bakery industry, baked goods come in different heights and sizes, such as scones, hamburgers, bread and cakes. It is therefore convenient to provide a tray that can be adapted to various sizes of the baked goods. A number of multi-stacking trays have been developed. Some of the stacking trays of prior art do not provide an easy means for aligning an upper tray to a lower tray. In addition, some of the prior art stacking trays do not provide means for sliding an upper tray to a lower tray, but a vertical top stacking procedure is required, in order to obtain the stacking benefit. US Pat. No. 5,287,966, issued to Stahl, describes a basket of multiple sliding levels. This description provides identical trays / baskets stacked to one level when in a common orientation, while being configured for sliding and nested to a second level when one of the baskets rotates 180 ° relative to the other. Once you see that the baskets are nested, the top basket will d < Yoe lifts vertically to place the complementary sides in the upper rail of the lower basket. There is no provision for blind unstacking of the trays. This is an advantage since it generally requires two hands to lift a basket on the upper rail, instead of pivoting the upper basket with one hand to slide to the upper rail so that it can also slide away from the lower rail. Removal of the upper basket from the bottom basket when the pile is on a user's head can be almost impossible. The ability to stack and unload can also provide an advantage in areas of limited height when space is not available to physically and vertically lift the upper basket away from the lower basket. The present invention addresses the problems mentioned above. In particular, the improvement of the invention includes the configuration in the anchoring of the opposite side wall of the tray that has not been raised during the pivoting operation. Therefore, the side walls of the bakery tray provide legs and rests to accommodate both high and low stacking positions. The opposite sides of the side walls of the bakery trays have commentary leg and foot orientations, where the left end of the side wall has a rest that corresponds vertically to one leg, while the right end of the side wall has a second rest that corresponds to the second leg. If another tray having the same configuration is stacked in vertical alignment with the first tray, the vertically aligned leg of the upper tray will be received within the first level breaks of the lower baking tray. This will provide a higher stacked position or a longer vertical space between the two trays stacked in a similar manner. When one of the trays is rotated 180 ° with respect to the other tray, a stacked position is created at a lower level so that a smaller vertical space is created between the stacked trays. The single leg of the opposite ends of the side wall is received by the lower rest set on the opposite sides of the side wall. Therefore, the same legs are used to be spread over any set of breaks in the walls. lateral to provide two levels of ap L lamiento. Additionally, when a side wall of the tray is >; * I »VJ to perform the blind unstack of the tray, the legs of the upper tray pivot and remain within the rests of the side wall of an inner tray to ensure that the upper tray remains stationary when it is raised to a of the bakery tray. Other objects, advantages and applications of the present invention will be apparent to those skilled in the art when reading the following description of the best mode contemplated for applying the invention, together with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS The description herein refers to the accompanying drawings, in which like reference numerals refer to like parts through the various views and where: Figure 1 is a top perspective view of a tray multi-level dt. according to the present invention; Figure 2 is a left side elevation view of two multiple level baskets in nested position where each basket faces the same direction; Figure 3 is a view in right lateral elevation of the two multi-level baskets in the nested position, where each basket faces the same direction; Figure 4 is a view in left lateral elevation of the lower basket and of the upper basket in the nested position where the upper basket rotates 180 ° in relation to the lower basket; Figure 5 is a view in right lateral elevation of the basket i nor emior and d the upper basket in the nest position where the upper basket rotates 180 ° in relation to the lower basket. Figure 6 is a partial front elevational view of the two baskets nested in a corner; Figure 7 is a partial rear elevation view of the two baskets nested in a corner; Figure 8 is a partial front elevation view of the lower basket and a partial rear elevation view of the upper basket in the nested position; Figure 9 is a partial rear elevation view of a lower basket - and a partial front elevation view of the upper basket in a nested position; Figure 10 is a partial perspective view of two nested baskets facing the same direction; Figure 11 is a partial perspective view of two nested baskets having the top nested basket glia 180"; Figure 12 is a partial perspective view of the upper basket, in Figure 10 sliding along the lower basket; Figure 13 is a perspective view in partial cross-section of the thermal stacking and blind destacking face of the upper basket relative to the lower basket; Figure 14 is a perspective view of nesting baskets where the upper basket is rotated 90 ° relative to the lower basket. Referring to the drawings, a multi-level basket is shown in Figure 1. The terms "basket" or "tray" will be used throughout the specification interchangeably to refer to the invention. I, to bakery tray 10 has four vertical sides Les and a lower flat surface connected between the cells; vertical sides. Four verticals include a front side called a straight A, a left side called side B, a backward or backward side called C side, and a right side called side C, which is designated in Figure 1. Lower flat surface is designated as Side L in Figure 1. Sides B and D are mirror images of each other and, therefore, only one side will be treated. The bakery tray 10 and especially the sides B and D of the tray are configured so that another identical bakery tray 10 can slide above the first bakery tray 10 along a lane, as will be discussed below. , until the extension portions located on each side B and D fall into a closed position in the first tray 10. If a second tray is placed in a stacked position so that the front J (side A) of a second Tray looks in the same direction as the tray itself, the height between the two flat surfaces (E) of the two trays will be at the same level. If a second tray is inverted so that the C side of the second tray faces the same direction as the A side of the lower tray in a stacked position, the height between the two flat surfaces of the two trays will be at a different level . Therefore, baked goods of different sizes can be stored using the configuration that saves more space from the bakery trays. As will be seen, the trays can also be oriented lK) ü in relation to each other (Figure 14) for a space in the third level. The invention further provides a blind stacking and unstacking feature that accommodates the storage and storage of additional trays at a height above an individual's head. The bakery tray will be described with reference to Figure 1. The bakery tray or bread basket 10 is a one-size molded plastic tray having four walls (A, B, C and D) and a lower flat floor surface E. The lower floor surface may be a solid floor that is preferably perforated or scratched, as shown in Figure 1 to provide ventilation between the layers of the flooring articles. to bake. The perforated floor E also provides finger holders for the blind stacking and unstacking of the tray 10. The front and rear sides, also referred to as side A and C respectively, have lower heights than the side walls B and D. The front wall ( side A) has angular portions in two stages 12 and 14, respectively, in each corner it with a lower edge 18 between the sides. The rear wall (side C) has a single angular leg, the portion 20 at each corner 22 with a lower edge 24 therebetween. On the substantially upper horizontal surface 26 of the upper passage 12 of the A side and adjacent to each side of the wall (B and D) there is a rectangular slot 28 and a first edge portion of the rail Yl which initiates the non-continuous rail 29 to guide along the side walls (B and D) when an upper patent leather is piled on the current lower tray. Adjacent to the first edge of the rail 30 on the side of the wall A and inside the side walls (B and D) there is a second slot 32. Each second slot 32 is dimensioned to accommodate one of the side walls (B and D) when a The upper tray is positioned at 90 ° relative to the lower tray, as shown in Figure 14. The angular surface 34 of the first step 12 on the end of the front wall (A) are separated from each other to maintain an upper tray in a position of 90 °. The upper horizontal surface 36 of the second wall passage (A) is at the same height as the central flange portion 24 of the wall (C). Beneath each first portion of steps 12 on the wall (A) there is an angular cutting portion 38 made on the outer surface 19 of the wall (A), so that the upper tray can fall behind the first portion of steps or the angle flange portion 12 and 20 of the wall (A) ((C) respectively of the lower tray This feature is shown in Figures 8 and 9. The rear wall (C), as shown more clearly in the tray Figure 14, has similar groove formations on the surface of the upper wall as in the front wall, Therefore, the wall (C) also includes a first portion of grooves 39 adjacent to each edge of the wall. the portion 30. The first slot portion 39 is parallel to the first portion of the slot 28 on the A side and the portion of the rail edge 30 of the wall (C) is parallel to the edge portion of the rail 30 on the side (A). After the portions of the bord The rail 30 is a second slot 42 that is parallel to the second slot 32 on the side (A). The outer surface 46 of the rear wall (C) has a lower portion 44 that is depressed, which slides behind the upper portion 46 of the rear wall (C) of a lower basket or behind the outer surface 19 of the front wall (A), as shown in Figure 8. As discussed in the foregoing, the side walls of the bakery tray 10, designated as side (B) and (D), are mirror images of each other. Therefore, by looking at Figure 1, the side wall (D) will be discussed when detailing the internal surfaces 48 of the wall, and the side wall (B) will be discussed when detailing the outer surfaces 50 of the side wall. An upper continuous wall portion extends the entire length of the side walls (B and D) referred to herein as the external rail guide.; 52. The two outer track guides 52 are integrated with the front and rear walls (A and C respectively). The outer rail guide 52 and the edge portion of the rail 30 are at the lateral boundaries of the rail 29. The slots 28 and 39 are beginning and ending portions of the carel YY My i go to the B side of Figure 1 of the tray of bakery 10 and extending below the outer rail guide 52 there are four extension legs 54a, 54b, 54c, 54d, which extend downwardly downward to the floor portion (?) and the c-harole 10. The four patches of extension 54a, 54b, 54c, 54d have different widths and separate at uniform nc distances from one another. The extension legs 54a, 54b, 54t, 54d are separated inward from the pointer guides and are guided by the guides of the outer rail 52 in the upper trephines 5a, 56b, 56c, 56d to the inner wall surface of the outer rail guide Y. The supeporem extrennclik 56a, 56b, 5ßc and 56cl were seized from the top of the outer lane guide by 1 m fully integrated pipelines 29 The extension patches 51a, 541o, 5U, 541 they are connected to an internal wall - part 58 that integrates with the floor (E). The inner wall 58 extends upwards of the floor only a couple of centimeters, so that there are spaces 60a, 60b, t > 0c, 60d or open topaces between the inner wall 58 and the guide (top) 52 and the separation between the upper ends 5foa, 56b, 56c, 56d The prope sts of the spaces 60a, 60b, bOc, 60d will be discussed below In the lower part of each extension leg 54a, 54b, 54c, 54d there is an internal groove 62a, 6 / b, 62c and 6Y1 respectively, adjacent to the inner wall surface 58. The left side (D) of the bakery tray exhibits the inner wall 58 of the side walls, as set forth above, the side wall (D) is the mirror image of the side wall. (B) The inner wall 58 is integral with the upwardly extending ends 56a, 56b, 56c, 56d, having various shapes with the openings 61a, 61b, 61c, 61d to the respective spaces 60a, 60b, bOc, 60d The upper end of the upwardly extending limbs 56a, 56b, 56c, 56d end at different levels. One of the upwardly extending extremities 56a, 56b, 56c, 56d includes an edge portion of the rail 30 on which the internal groove 62a, 62b, 62c, 62d of the legs extends downwardly of the legs 54a, 54b, 54c, 54d of a tray, the upper basket is mounted on them. In addition, each of the upwardly extending limbs 56a, 56b, 56c, 56d has portions that terminate at a first level at a position that coincides with downwardly extending legs 54a, 54b, 54c, 54d. The portions of the first level 64a, 64b, 64c, 64d are on the same parallel plane. The first planar level of the portions 64a, 64b, 64c, 64d are placed at a level lower than the rail and the edge of the rail i0. The position of the first level is adapted to the legs extending in the upper part 54a, 54b, 54c, 54d from an upper bakery tray 10. The flat positions of the first level 64a, 64lo, 64c, 64d and the positions of the legs extending in the lower part 64a, 64b, 64c, 64d are separated so that the positions of the legs extending in the lower part 54a, 54b, 54c, 54d do not fall in the position of the first level 54a, 54b , 54c, 54d while moving over lane 29 until the upper bakery tray is fully fixed directly on the lower bakery tray. After the extension leg 54a extends into the first level of the first portion 64a, extending to the leg 54b and falling into the first level of the portion 64b, the leg 54c falls into the position of the first level L 64c, and the extension leg 54d falls into the portion of the first level 64d. In Figures 1, 2 and 3, four lower extension legs and four positions in the first level are shown. Each lower extension leg and each position in the first level are numbered to indicate the correlation between the lower extension legs 54a, 54b, 54c, 54d and the positions in the first level 64a, 64b, 64c, 64d. Figures 2 and 3 show the respective lower extension legs on the upper basket / tray in the corresponding optimum level position of the lower tray. Figures 2 and 3 also show the alignment of the lower extension legs placed in the corresponding and respective first level positions when the upper bakery tray 10 is placed in the same direction of the lower bakery tray 10, that is, in the front side (side A) is facing the same direction for the upper and lower bakery trays. Figures 6 and 7 show portions of the front and back sides (A and C) of the two stacked baskets 10 respectively. The portions shown are placed in a corner to illustrate when at the corners an upper and lower basket falls which they meet when in the stacked position. As can be seen in Figure 6, when the internal groove 62 receives the first edge of the rail 30 so that the extension leg 54a is positioned to be behind the first slot portion 28 in the first level position 54a. In addition, the second slot portion 32 receives a complementary size flange 66 extending from the floor E of the upper tray. The cutting portion 38 of the upper coharola is fixed behind the first portion 12 of the lower tray. In Figure 7, the internal groove 62d slides in the rail 29. The inter-relationship between the surfaces helps provide stability for the stacked trays. As can be seen in Figures 6 and 7, the distance of the space or height between the joys E of the lower tray to the upper tray is shown as Hl. When two or more trays are stacked therein (direction, the open areas or spaces 60a, 60b, 60c, 60d, are provided by an air circulation as well as areas for inserting handles to transport the stack of trays when the upper tray is rotated 180 ° relative to the lower tray, the ratio of the two stacked trays is as illustrated in Figures 4, 5, 8 and 9. Figure 4 illustrates a front elevation view of the left side (B ) of the bakery tray as the lower tray and the right side (D) of the upper tray When the upper tray is reversed 180 ° in relation to the lower tray the extension legs 54a, 54b, 54c and 54d of charcola The upper tray will still be mounted along the rail 29 until the trays are directly and completely over the lower tray When the upper tray is completely over the lower tray, the extension legs 54a, 54b, 54c and 54d they are configured and separated so that they fall in the openings 61a, 61b, 61c, 61d to the spaces 60a, 60b, 60c, 60d respectively between the rail portions. In the orientation of the legs and breaks, the legs do not fall in any level position or in the openings that are completely on a lower tray. In Figure 4, the extension leg 54a falls into the bid opening, the extension leg 54b falls into the opening 61c, the extension leg 54 e falls into the opening 61b and the extension leg 54d falls into the opening 61 a . When the upper bakery tray col á di rt.ri anu-p. on the Ib lower bakery tray, a pair of shelves 68 located on both sides (B and D) of the bakery basket rests on the rail edge portion 30. The rail edge 30 acts as a retainer for the shelves 68 to determine the height of the upper basket in relation to the lower basket. Also, the closure on the opposite sides of the bakery trays ap- plied as shown in Figure 5, the left side (B) is directly on the right side (D). Figure 5 shows which pair of recesses 68 rest on the edge portion of the carriage 30 and also the ratio of the extension legs 54a, 54b, 54c, 54d to the openings 61a, 61b, 61c, 61d. Figures 8 and 9 show the front and rear views of the corner portions of the stacked trays where one of the trays is 180 ° inverted relative to the other tray. In Figure 8, the front face (A) is in the view for the Lower tray and the poster side (C) is in the view for the upper tray. As seen in Figure 8, the lower depressed portion of the back wall (C) is directly behind the first leg pore 12 of the front wall (A). A surface portion 47 of the upper portion 46 of the rear wall (C) was made on the upper horizontal surface 26. Looking at Figure 9, the front wall (A) of the tray 10 is in view as shown in FIG. upper bakery tray 10 while the rear face of the wall (C) is in view towards the lower bakery tray. When the trays in this configuration are in a stacked position, the front cut portion 38 of the front face (A) slides behind the upper portion 46 of the rear wall (C). When comparing the height (Hl) between the floors (E) of the upper bakery tray to the lower bakery tray when one of the trays is inverted 180 ° relative to the other bakery tray, the differential height of the tray (Hl) is less than the differential height (Hl) when the trays are facing the same direction, as shown in Figures 6 and 7. Figure 10 shows a worst-case view of Figure 3 where the guide cié < ai r i 1 outside is cut so that views of the stacking mode are best observed. Figure 10 shows the bakery trays stacked in the same direction with the right side (D) in view. Figure 11 shows a perspective view of Figure 2 in which one tray is inverted L80 ° in relation to the other tray. The left side (B) is facing the upper tray and the right side (D) is facing the lower tray. The extension legs 54a, 54b, 54c, 54d are shown in relation to the first level portions 64a, 64b, 64c, 64d and the openings 61a, 61b, 61c, bid.

Figure 12 is a view of Figure 10 showing the tray of the upper basket sliding over the rail portion of the lower bakery tray. As can be seen, the extension legs 54a, 54b, 54c and 54d are separated on the upper tray and the rail portions 30 are separated on the lower tray so that the extension legs 54a, 54b, 54c, 54d do not fall to one of the lower levels until the upper tray is completely stacked on the lower tray. Figure 13 shows the blind stacking and unstacking feature of the present invention. Figure 13 is again a view of Figure 10 showing the right sides (D) for the upper and lower bakery trays. The extension end 54a is pivoted on its first level portion 64a so that the extension legs 54b, 54c, 54d will move slightly forward to rise above an adjacent rail portion 29. Once the extension legs are rise over the portion of lane 29, The upper bakery tray can be used lengthwise to remove the lower tray. The extension tip 54a may be repurposed in the opening 61a as well. Although it is not shown, the extension leg 54d can also pivot where it is located in the first level portion 6 ci or located in an opening 61a of a space area area 61a 60a. The pivoting feature is provided by the wave openings, 61b, 61d between the portions of the rail 29 that give the extension legs 54a and the, to pivot and rise from the position of the first level or opening to the space for the rail 29 The widths of the positions of the first level 64a, 64b, 64c, 64d and the widths of the openings 61a, 61b, 61c, 61d are larger than the widths of the extension legs 54a, 54b, 54c, 54d. Figure 14 shows an upper tray rotated 90 ° in relation to a lower tray for stacking purposes. The lower edge portions of the front and rear sides A and C are disposed between the angular walls 34 and 20 of the sides A and C respectively of the lower tray. The upper tray 10 is prevented from moving by the internal flange 70 located against the outer wall surface 19 of the front side (A) and upper portion 46 of the rear wall (C). This prevents lateral movement of the upper tray. While the invention has been described together with what is currently considered to be the most practical preferred mode, it should be understood that the invention is not limited to the described modes, but on the contrary, it is intended to cover various modifications and equivalent arrangements included within. of the spirit and scope of the appended claims, the scope of which should be in accordance with the broadest interpretation so as to cover all the modifications and equivalent structures permitted by law.

Claims (15)

1. CLAIMS 1. A tray for stacking a plurality of identical trays, the tray is characterized in that it comprises: a front wall; a back wall; two side walls and a floor integrally connected to the four walls, wherein the two side walls are mirror images of each other, each of said side walls having interleaved legs and positions of interconnected levels when two identical trays are appealed.
2. 2. The tray according to claim 1, characterized in that each side wall has an upper side forming a portion of a rail.
3. And The tray according to claim 2, characterized in that the rail in each side wall is formed by discrete rail portions.
4. The tray according to claim 3, characterized in that between a pair of rail portions there is at least one interleaved level position.
5. 5. The tray according to claim 1, characterized in that the interspaced patches are separated along each side wall at un- equal intervals. b.
6. The tray according to claim 1, characterized in that the legs interleaved along a side wall have unique widths. 1 .
7. The tray according to claim 1, characterized in that the front wall has a pair of angular surfaces and a low level surface between them, wherein the level surface on a lower tray supports an identical upper tray oriented 90 degrees in relation to the lower tray. H.
8. The tray according to claim 7, characterized in that the rear wall is joined to a side wall at a corner and a rear wall having downwardly directed flanges near each corner, wherein the tabs directed downward prevent movement. of the upper tray when stacked at 90 degrees in relation to the lower tray.
9. 9. The tray according to claim 4, characterized in that the legs interspersed each have an internal groove to slide on the rail portions.
10. 10. The tray according to claim 9, characterized in that the side walls have at least two interleaved level positions.
11. 11. The tray according to claim LO, characterized in that the side walls include handle means.
12. The tray according to claim 11, characterized in that the handle means are formed by spaces between pairs of rail portions, wherein at least one space forms a first level position interleaved to receive a complementary sandwich foot. an upper stacking tray when the lower stacking tray is oriented 180 ° in relation to a lower tray.
13. The tray according to claim 12, characterized in that an interleaved second level position is formed to rest between the pairs of rail portions to receive a complementary sandwiching foot of an upper stacked tray when the upper stacked tray is oriented identical to the lower tray.
14. The tray according to claim 13, characterized in that the first portion of the interleaving level is lower than the second portion of the interleaving level.
15. 15. The tray according to claim 14, characterized in that it includes stacking and unstacking means.