PatentDe  


Dokumentenidentifikation EP1424287 22.02.2007
EP-Veröffentlichungsnummer 0001424287
Titel Drahtgitterbehälter, ein Drahtgitterbehälter verwendendes System und Verfahren zum Herstellen dieses Behälters
Anmelder Design Ideas Ltd., Springfield, Illinois, US
Erfinder Cheng, Hsi-ming, Chung-Hua Hsien, TW;
Post, R.Neal, Springfiled Illinois 62702, US;
Hardy, Christopher, Springfield Illinois 62702, US
Vertreter derzeit kein Vertreter bestellt
DE-Aktenzeichen 60217521
Vertragsstaaten AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, IE, IT, LI, LU, MC, NL, PT, SE, SK, TR
Sprache des Dokument EN
EP-Anmeldetag 28.11.2002
EP-Aktenzeichen 022581995
EP-Offenlegungsdatum 02.06.2004
EP date of grant 10.01.2007
Veröffentlichungstag im Patentblatt 22.02.2007
IPC-Hauptklasse B65D 8/04(2006.01)A, F, I, 20051017, B, H, EP
IPC-Nebenklasse A47B 88/04(2006.01)A, L, I, 20051017, B, H, EP   

Beschreibung[en]
BACKGROUND OF THE INVENTION Field of The Invention

The present invention relates to containers, a system using such containers, and a method of making such containers. More particularly, the present invention relates to drawers made of mesh material.

Description of Related Art

Forming containers out of sheet metal is well known. United States Patent No. 903,848 to Donnelly and 1,107,014 to Avery disclose such containers. In order to make these containers, a single blank of flat material is cut out and folded with overlapping sections. Sheet metal does not provide desirable characteristics such as drainage and ventilation.

In an effort to make a well-ventilated container, United States Patent No. 645,344 to White discloses a container formed of perforated sheet metal, wire-netting or another open-work material. The White container is intended to have a folded state and a flat state. This container is designed to be readily knocked down from its folded state to its flat state and to be easily constructed without tools.

Other patents attempt to make lightweight, drainable and/or ventilated containers. United States Patent No. 1,994,553 to Wolcott discloses one such container of finely woven wire screening. United States Patent No. 2,825,481 to Glenny discloses another such container of finely woven wire screening. In order to make the White, Wolcott and Glenny containers a single blank of flat woven wire is cut out and folded with overlapping sections.

Another wire container that is commercially available under the brand name Elfa® is formed of a wire grid with a plurality of separately formed wires welded together. The Elfa® container includes a basket portion and a flat rail around the top edge of the basket portion. The Elfa® baskets are designed for use in a frame having a plurality of pairs of runners. When the baskets are inserted in the frame, the flat rail is supported by a pair of runners and is movable between retracted and extended positions. The wire grid used for the Elfa® basket has large holes measuring about 25mm by 25mm (1 inch by 1 inch). The Elfa® basket also has openings at it is corners. If a user desires to store small objects in these baskets, a plastic liner can be used. The liner has a bottom wall and upwardly bendable sidewalls, with slits between the sidewalls to allow for such bending. The open corners of the basket and the slits between the sidewalls of the liner may allow small objects to fall out of the basket, which is undesirable.

Mesh material is typically formed by perforating or slitting a piece of sheet metal and stretching it. A sheet of mesh material requires less raw sheet metal than a non-mesh piece of sheet metal and a perforated piece of sheet metal. United States Patent No. 1,408,026 to Ochiltree discloses a desk tray or basket formed of "expanded metal" or mesh material. Similar to the previous containers, the Ochiltree container is formed by a single blank of flat material that is cut out and folded.

ROC (Taiwan) Patent Publication No. 00312310 to Chih-Ming, Ko (in transliteration), filed February 21, 1997, discloses a system of containers supported by a frame. The containers are formed of a single piece of mesh with a rim connected thereto. Additionally, the containers do not move with respect to the frame so that the contents of the lower container are not easily accessible.

A number of mesh containers are made by Design Ideas, Ltd. One of these containers is the "Mesh Storage Nest." This container is formed using a first piece of mesh that has the ends welded together to form a loop. A second piece of mesh is welded to the lower edge of the loop so that the first piece of mesh forms sidewalls and the second piece of mesh forms a bottom wall. The seam at the bottom of the container is covered by a bottom rail. A top rail is connected to the upper edge of the container. The sidewalls can be shaped to include a plurality of corners.

A need exists for a lightweight container that can be incorporated into a system for storing objects. It is also desirable that the contents of such a container be made easily accessible and be prevented from accidentally falling through holes in the container. Furthermore, it is desirable that the container be formed by an economical method in unlimited sizes. The present invention was developed with the above-noted general objects in mind.

SUMMARY OF THE INVENTION

Preferably, one drawer and more preferably, a plurality of drawers are useful with a frame in a storage system. Each drawer is moveable with respect to the frame between retracted and extended positions. In such an embodiment, the frame may further include a pair of runners with a gap therein for slidably receiving the runner portion of each drawer.

The present invention is directed to a container as defined in the independent claim 1.

The basket portion may further include runner portion. In such an embodiment, the runner portion may be a rail that may be separately formed from the basket portion.

In one embodiment, the rail is preferably a flat piece of material and can include a curved portion. In the latter rail embodiment, the curved portion defines an opening in an uncompressed state for receiving the upper section of the basket portion, and in a compressed state the opening is minimized.

The present invention is also directed to a method for forming a container as defined in the independent claim 10.

According to one aspect of the inventive method, the connecting steps may be performed by welding.

The method may further include the step of forming a runner portion on the top of the basket portion.

BRIEF DESCRIPTION OF THE DRAWINGS

The present invention will be more fully appreciated as the same becomes understood from the following detailed description of the best mode presently contemplated for carrying out the present invention when viewed in conjunction with the accompanying drawings, in which:

  • FIG. 1 is front, perspective view of a first preferred embodiment of a system of drawers of the present invention, where the drawers are in a retracted position;
  • FIG. 2A is an enlarged, perspective view of an L-connector for use with the system of FIG. 1;
  • FIG. 2B is an enlarged, end view of the L-connector shown in FIG. 2A;
  • FIG. 2C is an enlarged, perspective view of a T-connector for use with the system of FIG. 1;
  • FIG. 2D is an enlarged, end view of the T-connector shown in FIG. 2C;
  • FIG. 3 is an enlarged, rear, perspective view of a first preferred embodiment of a drawer shown in FIG. 1;
  • FIG. 3A is an enlarged, perspective view of a portion of the drawer shown in FIG. 3;
  • FIG. 4 is an exploded, rear, perspective view of the drawer shown in FIG. 3;
  • FIG. 5 is an exploded, rear, perspective view of a portion of the drawer shown in FIG. 3, wherein all of the mesh pieces have been bent;
  • FIG. 5A is a partially-exploded, rear, perspective view of the drawer shown in FIG. 4, wherein three pieces of mesh material have been joined together;
  • FIG. 6 is a schematic representation of some of the mesh pieces of FIG. 5 and a portion of a welding machine for joining such pieces;
  • FIG. 7 is a schematic representation of some of the mesh pieces of FIG. 5 and another portion of the welding machine of FIG. 6;
  • FIG. 8 is a partial, elevational view of a first embodiment of an upper rail joined to one of the mesh pieces shown in FIG. 5, wherein an upper portion of the mesh piece is uncropped;
  • FIG. 9 is a partial, elevational view of the upper rail joined to the mesh piece of FIG. 8, wherein the upper portion of the mesh piece is cropped;
  • FIG. 10 is a partial, elevational view of a second embodiment of an upper rail separated from a mesh piece;
  • FIG. 11 is a partial, elevational view of the upper rail joined to the mesh piece of FIG. 10;
  • FIG. 12 is an exploded, rear, perspective view of a second embodiment of a basket using the upper rail and mesh piece shown in FIGS. 10 and 11;
  • FIG. 13 is an exploded, rear, perspective view of a third embodiment of a drawer for use in the system of FIG. 1, wherein an alternative embodiment of two side pieces of mesh material are used;
  • FIG. 14 is a partially-exploded, rear, perspective view of the drawer shown in FIG. 13, wherein three pieces of mesh material have been joined together;
  • FIG. 15 is an enlarged, rear, perspective view of a background art drawer useful in the system of FIG. 1;
  • FIG. 16 is an exploded, rear, perspective view of the drawer shown in FIG. 15;
  • FIG. 17 is a partially-exploded, rear, perspective view of the drawer shown in FIG. 15, wherein three pieces of mesh material have been joined together; and
  • FIG. 18 is front, perspective view of a second preferred embodiment of a system of drawers of the present invention, where the drawers are shown in a retracted position.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

Referring to FIG. 1, a preferred, first embodiment of a drawer system 10 is shown. This drawer system 10 may be used to store a variety of housewares, such as kitchen items, clothing, accessories, sports equipment, shoes, bathroom supplies, tools, appliances, and the like. Additionally, the system 10 can be used to store a variety of other items, for example food, office supplies, office equipment, file folders, papers/documents, bags, boxes, cans, bottles, etc.

The drawer system 10 includes a frame 12 and a plurality of containers or drawers 14a-d. The drawer 14a is smaller than the drawers 14b-c so drawer 14a can hold a smaller volume than the other drawers 14b-d. The drawers 14a-d are movable with respect to the frame 12 between a retracted position (shown in FIG. 1) and an extended position. In the retracted position, the contents of the lower drawers 14b-d is difficult to access. In the extended position, the contents of the extended drawer are easily accessible; the extended drawer may be fully withdrawn from frame 12 if desired.

With reference to FIG. 1, frame 12 includes two side frame members or ladders 16 that are spaced apart and joined by pairs of upper and lower cross members 18a,b, respectively. The side frame members 16 and the pairs of upper and lower cross members 18a,b are formed to give the frame 12 a rectangular shape. The present invention is not limited to this frame shape.

The frame 12 further includes L-connectors 20 (as best seen in FIG. 2A) and T-connectors 22 (as best seen in FIG. 2B) for joining the side frame members 16 to the cross frame members 18a,b. Preferably, L- connectors 20 connect upper cross member 18a to the side frame members 16, if no additional frames are to be added above the one illustrated in FIG. 1. If an additional frame is to be added above the frame 12 shown in FIG. 1, T-connectors 22 are used to join upper cross members 18a to frame members 16. Preferably, T-connectors 22 also connect lower cross members 18b to the side frame members 16. Alternatively, the T-connectors 22 joined to the lower cross members 18b can be replaced with plugs with casters (not shown) thereon to make the system 10 movable, as is apparent to those of ordinary skill in the art.

Referring again to FIG. 1, each side frame member 16 includes a pair of spaced apart vertical rods 24 coupled by vertically spaced apart horizontally-extending runners 26a-g. Each side frame member 16 is formed so that the runners 26a-g of each side frame member 16 are aligned with the runners 26a-g of the other side frame member 16 to form a plurality of pairs of runners. Each runner 26a-g is a generally U-shaped member with an inwardly extending gap 28 defined therein. The runners 26a-g may include a bore (not shown) in the rear end for receiving a pin (not shown) for preventing rearward movement of the drawers 14a-d out of the frame 12. To make the frame independent of direction the bore (not shown) may be formed at both ends of each runner and the pin (not shown) disposed in the desired end for use.

The frame 12 is preferably formed of any metal with sufficient rigidity and formability, for example mild sheet steel, stainless steel, aluminum, copper or the like can be used. The vertical rods 24 and the runners 26a-g are preferably welded together using conventional welding techniques. The frame 12 may be subjected to a powder painting treatment, similar to that discussed below for the drawers 14a-d.

Referring to FIGS. 1, 2A and 2B, the L-connector 20 includes a central body 30 and first and second generally perpendicular legs 32 and 34 extending therefrom. Preferably, the pairs of cross members 18a,b and vertical rods 24 are hollow so that the legs 32 and 34 are received therein to join these components together. Referring to FIGS. 1, 2C and 2D, the T-connector 22 includes a central body 36 and first, second, and third legs 38, 40, and 42, respectively, extending therefrom. First and second legs 38 and 40 are generally perpendicular to one another similar to L-connector 20. Third and second legs 40 and 42 are also generally perpendicular to one another. Preferably, the first leg 38 and the third leg 42 may be inserted into the hollow vertical rods 24, and the second leg 40 is inserted in the hollow associated cross members 18a,b.

The L-connectors 20 and T-connectors 22 are preferably formed of any metal with sufficient rigidity and formability. For example, the connectors 20 and 22 can be cast of die-cast aluminum or any alloy, using conventional techniques known to those of ordinary skill in the art. These connectors 20 and 22, however, can also be formed of another material like injection molded plastic.

Now, with reference to FIGS. 1, 3, and 3A, the details of the drawer 14b will be discussed. The drawer 14b includes a runner portion that comprises upper rail 54 and a basket portion 55. The basket portion 55 is coupled to the upper rail 54. In the present embodiment, the basket portion 55 is formed of expanded metal plate (i.e., sheet metal) or "mesh" and has small openings 55a therein. In the present specification and appended claims "mesh" means flat metal that is pierced and stretched so that no material is separated from the original raw material, as known by those of ordinary skill in the art. On the other hand, unlike mesh, punching portions of waste material out of sheet metal material forms perforated metal. Preferably, the openings 55a (see FIG. 3) in the mesh have an area less than 25.4 mm by 25.4 mm, more preferably less than 20 mm by 10 mm, and most preferably, less than 6 mm by 3 mm.

The basket portion 55, preferably, is formed of any metal such as copper, steel, stainless steel or aluminum, and the like. The basket portion 55 includes a bottom wall 56, a pair of spaced apart sidewalls 58 and 60, and another pair of sidewalls 62. Preferably, the sidewalls 58, 60 and 62 are joined together to form closed curved corners 64. The sidewalls 58, 60 and 62 extend upwardly from the bottom wall 56 to form an upwardly-facing opening 66..

As shown in FIG. 3, the corners 64 are curved so that they deviate from straightness in a smooth, continuous fashion. The present invention, however, is not limited to drawers with curved corners and drawers with more angular corners are also considered inventive. The present invention is also not limited to drawers with a radius of curvature greater at the top of the drawer (adjacent the rail 54) than at the bottom. Thus, drawers with, for example, a constant radius of curvature are also considered inventive.

In this embodiment, the sidewall 58 forms a front end wall that includes a curved cutout 68 bordered by a handle rail 70. The cutout 68 forms a place where a user can easily grasp the drawer 14b to move it between the retracted and extended positions. In an alternative embodiment, the cutout 68 can be replaced with other methods to aid the user in moving the drawer 14b, such as a protruding handle connected to wall 58. The handle rail 70 may have a circular cross-sectional shape and be cut and formed to extend along the edge of cutout 68. Preferably, the rail 70 is of the same material as upper rail 54 and is spot-welded to the basket portion 55. In this embodiment, the sidewall 60 forms a rear end wall.

Referring to FIG. 4, the drawer 14b is shown in a disassembled state. The basket portion 55 is formed by a first piece of mesh 72, a second piece of mesh 74 and a third piece of mesh 76. The first, second, and third pieces of mesh are formed separately from one another. The first piece of mesh 72 is bent along lines 72a,b to form edges as shown in FIG. 5 to define bottom wall 56 and sidewalls 62. The angle between the bottom wall 56 and sidewalls 62 is greater than about 90°, but the present invention is not limited to this configuration.

The second piece of mesh 74 includes an outer edge 74a, an inner edge 74b, a central portion 74c, side extensions 74d, and a lower extension 74e. The central portion 74c is between the outer edge 74a and the lower extension 74e and between the side extensions 74d. The side extensions 74d have a trapezoidal shape so that they taper downward from the outer edge 74a to the lower edge 74b. The second piece of mesh 74 is bent to form front end wall 58, curved corners 64, and lower extension 74e that is generally perpendicular to front end wall 58 (see FIGS. 3 and 5). Third piece of mesh 76 is formed similarly to second piece of mesh 74 to include an upper edge 76a, a lower edge 76b, a central portion 76c, side extensions 76d, and a lower extension 76e.

The pieces of mesh 74 and 76 can be formed of a single piece of material separate from the first piece of mesh 72. In such event, the two pieces of mesh 74 and 76 would be joined by another mesh segment (not shown) that would be shaped similar to bottom wall portion 56. As a result, the bottom wall of basket 55 would be formed of two layers of mesh material that overlap. This disclosure does not form part of the invention but represents background art useful for understanding the invention.

Referring to FIG. 5A, the first, second, and third pieces of mesh 72, 74, and 76 have been joined together so that bottom seams 78 are formed. Seams 78 are where the material of bottom wall 56 of the first piece of mesh 72 overlaps with lower extension 74e of the second and third pieces of mesh 74 and 76 (see FIG. 4). When the corners 64 are formed, side seams 80 (as shown in FIG. 3) are formed adjacent each corner 64. Seams 80 are where the material of sidewalls 62 of the first piece of mesh 72 overlaps with side extensions 74d and 76d of second and third pieces of mesh 74 and 76, respectively. Seams 80 are generally vertically extending side seams.

The method of making drawer 14b will now be discussed. Referring to FIGS. 4 and 5, the first piece of mesh 72 is formed shaped as shown. This involves cutting a piece of mesh 72 with the desired dimensions from a roll of mesh using a conventional press machine. Then, the first piece of mesh 72 is bent into a U-shape that includes the bottom wall 56 and end walls 62 (as shown in FIG. 5). A conventional hydraulic press machine is used to bend the mesh piece 72. The hydraulic press machine includes a mold for achieving the desired bent shape, as is known by those of ordinary skill in the art.

The second and third pieces of mesh 74 and 76 are formed and shaped as shown in FIG. 4. This involves cutting the pieces of mesh 74 and 76 with the desired dimensions and shape from a roll of mesh using a conventional press machine. Then, the piece 74 is bent using a conventional hydraulic press machine so that side extensions 74d are curved and lower extension 74e is angularly offset from center section 74c. The hydraulic press machine includes a mold, as is known by those of ordinary skill in the art. The third piece of mesh 76 is bent similarly to second piece 74 (as shown in FIG. 5). The handle rail 70 may be welded to mesh piece 74 at this point or later, when the upper rail 54 is joined to basket portion 55.

After the drawer 14b is completely formed, optionally but preferably a process of powder painting may be used to coat the drawer 14b, as is known by those of ordinary skill in the art. One preferable paint is an epoxy coat. The painting may provide a decorative (colored and/or metallic) finish to the drawer 14b, if desired, and will also provide some protection for the drawer 14b from water and other corrosive elements.

Next, the lower extensions 74e,76e of each piece 74,76 are connected by welding to the side edge of the bottom wall 56 of first piece 72 (as shown in FIG. 5A) to form seams 78. Then, the curved side extensions 74d,76d of pieces 74,76 are connected by welding to sidewalls 62 of first piece 72 to form seams 80 (as shown in FIG. 3).

Referring to FIGS. 5, 6, and 7, the equipment used to connect the first, second and third pieces of mesh 72, 74, and 76 together will now be discussed. The equipment preferably comprises a spot-welding machine 84 including a base 86, a clamp 88 supported on the base 86, a movable elongated member 90 movable by the clamp 88 to provide a clamping force F, and a pair of anode electrodes 92a and a pair of cathode electrodes 92b. The base 86, clamp 88, member 90, and cathode electrodes 92b form a fixture for supporting the mesh pieces 72, 74, and 76 during welding. As shown, preferably, the cathode electrodes 92b are preferably bar-like and parallel to one another to properly support and clamp mesh pieces 72, 74, and 76. In an alternative embodiment, the spot-welder can be used without the clamp 88 and elongated member 90, where the pieces may be manually held during welding.

In order to join lower extension 74e of second piece 74 to bottom wall 56 of first piece 72, the already-bent first piece 72 is disposed on cathode electrodes 92b so that the sidewalls 62 extend downward (as shown in FIG. 6) toward the floor. Bent second piece 74 is disposed between member 90 and cathode electrode 92b, as shown in FIG. 7. Next, the clamp 88 is actuated so that the clamping force F moves the member 90 from a retracted position (shown in FIG. 6) into a clamping position (shown in FIG. 7). In the clamping position, the mesh piece 74 is compressed between member 90 and cathode electrode 92b. The clamping force F must be sufficient to hold mesh piece 74 into contact with mesh piece 72 for the welding operation.

Then, the anode electrode 92a moves in direction D1 into contact with pieces 72,74 adjacent extension 74e. These pieces 72,74 are tightly compressed between the electrodes 92a and 92b. The electrodes 92a,b then discharge electric welding current through the place to be welded and seam 78 (see FIG. 5A) is formed. The third piece 76, as shown in FIG. 5, is similarly joined to first piece 72. Preferably, the welding machine 84 is properly configured so that the fixture includes two clamps, two elongated members 90 and two pairs of electrodes 92a,b. As a result, the second and third pieces 74 and 76 can preferably be simultaneously welded to first piece 72.

Another spot-welding machine similar to machine 84 is used to weld pieces 74 and 76 to piece 72 adjacent the corners 64 to form seams 80. This spot-welding machine for forming seams 80 has an appropriately sized fixture including clamp(s), elongated member(s) and cathode electrode(s) for smaller pieces 74 and 76. For example, the cathode electrode(s) may be tapered to match trapezoidal extensions 74d,76d so that pieces 74 and 76 are suitably clamped to end walls 58 and 60 during welding.

With reference to FIG. 3, the upper rail 54 is subsequently connected to the upper section of the end walls 58 and 60 and sidewalls 62 by spot-welding. Referring to FIGS. 3 and 8-9, the step of connecting the upper rail 54 to the basket portion 55 further preferably includes the steps of forming a generally flat upper rail 54; contacting rail 54 to basket portion 55 on a contact surface 54a so that an upper section 55a of the basket portion 55 extends above the rail 54; and spot-welding the contact surface 54a to the outer surface of basket portion 55.

The upper rail 54 is preferably formed of the same material as the basket portion 55 so that these components can be welded together. Thus, preferably, the rail 54 is formed of any metal such as copper, steel, stainless steel, mild sheet steel or aluminum, and the like. In a preferred embodiment using sheet steel, a roll of sheet steel strip material with a circular cross-section is used. This material is passed through a conventional roll forming machine with a number of pairs of rollers using a predetermined compression pressure to continuously and gradually change the circular cross-section into a generally flat rectangular cross-section, as is known by those of ordinary skill in the art.

The material with the flat rectangular cross-section is then fed into a bending machine that includes spaced apart pairs of guide rollers for guiding the material through the machine and bending the material into four spaced apart right angles to form a rectangular ring. Hydraulic power can be used to provide the bending force to the associated pairs of guide rollers. Where the bending pairs of guide rollers are located, the machine further includes rollers for preventing vertical expansion of the material. Once the rectangular ring is formed, the free ends of the ring are joined by welding to form the upper rail 54.

The rail is not limited to the above configuration, shape and materials. For example, it can be hollow with various shapes, such as a circular cross-section. The rail can also be solid with various shapes, such as a circular cross-section. The rail can also be formed of a plastic that is connected to the basket portion 55 by glue or adhesive, for example.

Referring to FIGS. 8 and 9, the step of contacting rail 54 to basket portion 55 on a contact surface 54a may preferably further include the step of using a spot-welding machine with a fixture F for supporting the rail 54 at a sufficient elevation above a table (not shown) so that the upper section 55a of the basket portion 55 extends above the rail 54. The fixture F may also provide a clamping force for assuring the surface 54a is in solid contact with the basket portion 55 or this force may be provided by movable anode and cathode electrodes AE and CE, respectively. Preferably, electrodes AE and CE are circular welding wheels. The anode electrode AE contacts the outer surface of the rail 54 and the cathode electrode CE contacts the inner surface of the basket portion 55 adjacent surface 54a, as shown in FIG. 9. An electric current is discharged through the electrodes AE and CE, rail 54 and basket portion 55 to spot-weld the rail 54 to the basket portion 55. Preferably, sufficient electrodes AE and CE are provided to make the welding of rail 54 to basket portion 55 efficient. Since the electrodes AE and CE are movable vertically in directions V and horizontally in directions H, the spot-welder can be used to weld variously size rails and baskets together.

The step of connecting the upper rail 54 may further include cutting and grinding steps. In the cutting step, the upper section 55a (as shown in FIG. 8) of basket portion 55 is severed using a conventional severing apparatus, such as one including a reciprocating saw blade. In the grinding step, the exposed upper edge 55b (FIG. 9) of basket portion 55 is worked using a conventional grinding machine so that a smooth upper edge 55b is formed. The rail 54 aids in providing structural rigidity to the basket portion 55 and is the only rail circumscribing each drawer's perimeter.

Referring to FIGS. 1 and 3, in use the drawer 14b is inserted into the system 10 by disposing upper rail 54 within gap 28 of opposed, aligned pair of runners 26b. The rail 54 and gap 28 are sized to allow free sliding movement of the drawer 14b with respect to the frame 12 between the retracted and extended positions.

Since the drawer 14b is formed of mesh with very small openings 55a (see FIG. 3), small objects, such as pens, paper clips, and the like, can be stored in the drawer without a liner and will not fall through the openings 55a. In addition, since the drawer 14b has closed corners 64, small objects also cannot fall out of this area of the drawer.

As shown in FIG. 1, drawers 14b-14d are of medium size and vertically extend across two sets of vertically spaced runners. Drawer 14a is a small size and consequently extends across only one set of vertically spaced runners. The drawers may be sized differently, see FIG. 4, particularly by changing the length L of the first piece of mesh 72 and the height H of the second and third pieces of mesh 74 and 76. This allows containers of a variety of sizes to be formed without excess machinery costs, particularly large containers having a depth D from bottom wall 56 to top surface of top rail 54 (see FIG. 3) equal to or greater than about 11 inches. If larger baskets are desired, the basket material may need to be changed and/or thickened to provide more rigidity thereto. The width W of the mesh (FIG. 4) can be set by the machine forming the raw material so that the edges of piece 72 that will be connected to pieces 74 and 76 are smooth and require no cutting or grinding.

FIGS. 10-12 illustrate an alternative embodiment of the upper rail 54' for use with an alternative embodiment of basket portion 55'. To form the upper rail 54' raw material is bent to include a curved portion 54a' with an opening 54b' and an extension 54c' angularly offset from curved portion 54a' using a roll forming machine. The material is bent into a closed rectangular loop and welded together, similar to rail 54.

The basket portion 55' is formed similarly to basket portion 55 except the end walls 58, 60 and sidewalls 62 all have an outwardly bent upper section 55a' formed by a conventional hydraulic press machine with a mold at the same time other bends are formed in pieces 72, 74, 76 (see FIG. 5).

The bent upper section 55a' is inserted into the opening 54b' of the upper rail 54' (as shown in FIG. 11). The curved portion 54a' is then compressed by a conventional press machine so that the opening 54b' is minimized and curved portion 54a' tightly engages the basket portion 55a'. This step also results in the front curved tip 54d' of the rail 54' engaging the angled corner 55b' of the basket portion 55'. Then, the vertically-extending extension 54c' is welded to the basket using a spot-welding machine and fixture similar to the method used for rail 54 (shown in FIGS. 8 and 9). Once the upper rail 54' is joined to basket portion 55' in this manner, it provides additional structural rigidity to the basket portion 55'. Using the rail 54' eliminates the need to cut the upper section 55a of basket portion 55 as when using rail 54, as shown in FIGS. 8 and 9. Consequently, rail 54' eliminates the need to deburr the basket portion 55'.

Referring back to FIG. 1, basket 14a includes a rectangular cutout 68' on the front of wall 58'. A metal handle rail 70' covers the free end of the mesh within the cutout 68'. The handle rail 70' is preferably formed similar to rail 54' with an opening that is compressed about the mesh, once the mesh is inserted therein. Preferably, the handle rail 70' also includes an extension, similar to extension 54c' of rail 54', that can be spot-welded to securely attach the rail 70' to the mesh. In such an embodiment, the opening in the rail 70' extends vertically along with the extension. In an embodiment of the handle rail 70' without such an extension, the rail 70' may still be spot-welded to the mesh.

Referring to FIGS. 13-14, a third preferred drawer embodiment 114b is shown. Drawer 114b comprises a runner portion or upper rail 154 and a basket portion 155. The upper rail 154 may be formed like rail 54 or rail 54' previously discussed. The basket portion 155 includes a bottom wall 156, end walls 158 and 160, and sidewalls 162. The bottom and end walls 156 and 158 are also sidewalls. A first piece of mesh 172 is bent to form the bottom wall 156 and end walls 158 and 160. The sidewalls 162 are formed of separate second and third pieces of mesh 174 and 176, respectively. The end wall 158 includes a first piece of mesh 172 with a cutout 168 similar to end wall 58.

For drawer 114b, different from drawer 14b, the second piece of mesh 174 includes a central portion 174c, rectangular side extensions 174d and a lower extension 174e. The third piece of mesh 176 has a similar configuration. When the pieces 172, 174 and 176 are connected using a method similar to that used in forming drawer 14b, the drawer 114b has closed smoothly curved corners similar to corners 64 (as shown in FIG. 3), but the corners of drawer 114b will have a substantially constant radius. Drawer 114b also includes four side seams 80 at each corner and two bottom seams 178.

Referring to FIGS. 15-17, another drawer 214b is shown. Drawer 214b comprises a runner portion or upper rail 254 and a basket portion 255. The upper rail 254 may be formed like rail 54 or rail 54' discussed above. The basket portion 255 includes a bottom wall 256, end walls 258 and 260, and sidewalls 262. The end walls 258 and 260 are also sidewalls. A first piece of mesh 272 is bent to form the bottom wall 256 and end walls 258 and 260. The sidewalls 262 are formed of separate second and third pieces of mesh 274 and 276. The end wall 258 includes a cutout 268 similar to end wall 58.

In drawer 214b, different from drawers 14b and 114b, the second and third pieces of mesh 274 and 276 do not include extensions. When the pieces 272, 274 and 276 are connected using the method of forming drawer 14b, pieces 274 and 276 only overlap piece 272 on the bottom not on the sides. As a result, the drawer 214b has open corners 264 (as shown in FIG. 15) and two bottom seams 278. Drawers configured like drawer 214b can be used in systems like system 10 (shown in FIG. 1) and move between extended and retracted positions. Drawers similar to drawer 214b can come in a number of sizes. The drawer 214b is formed similarly to drawer 14b by bending and spot-welding the mesh pieces. The subject-matter concerning the drawer 214b is not part of the invention but represents background art useful for understanding the invention.

Referring to FIG. 18, a second preferred embodiment of a drawer system 310 is shown. Drawer system 310 includes a frame 312 and a plurality of drawers 314a and 314b. The frame 312 includes four pairs of runners 326a-d. This embodiment illustrates that any number of pairs of runners can be used depending on how large a system is desired. The frame 312 is otherwise configured and formed similarly to frame 12 (shown in FIG. 1). The system 310 further may include a solid table top or shelf 327 that is securely connected to the top of frame 312 by a press fit so that objects can be stored or displayed thereon. Alternatively, the shelf 327 may be sized differently (larger or smaller than) the frame 312 and connected to the frame 312 with conventional fasteners such as screws and L-brackets. Drawer 314a is small and extends across one pair of runners 326a. Drawer 314b is large and extends vertically across three pairs of runners 326b-d. Drawers 314a and 314b are configured and manufactured similar to drawer 14b (see FIG. 1), but drawers configured like drawers 114b and 214b can also be used with system 310.

Those skilled in the art will appreciate that the conception, upon which this disclosure is based, may readily be utilized as a basis for designing other products for carrying out the several purposes of the present invention. Therefore, this invention is not to be limited to the specifically preferred embodiments depicted therein. For example, the features of one embodiment disclosed above can be used with the features of another embodiment. Furthermore, the two different runner portions or upper rail embodiments 54 and 54' can be used exclusively in different systems of drawers to provide systems that cost different amounts, e.g., a high-priced system and a lower priced system. Alternatively, one system can have drawers with both types of rails 54 and 54'. Additionally, a system can use all closed-corner drawers or combine closed-corner drawers with open-corner drawers in one system. The system may be used with sliding drawers and/or stationary and sliding shelves each supported by a pair of runners. The system frame may also include a section for holding hanging file folders and one or more of the inventive drawers. The drawers of the present invention may be used without a frame. In yet another alternative embodiment, the containers/drawers of the present invention may be retained within a frame formed of wood, plastic, metal, or material with a wood finish, where the frame has components such as runners and rollers thereon. The frame would cooperate with a stationary holder with runners and rollers thereon so that the container does not move with respect to the holder, but when the holder moves between an extended and retracted position by moving with respect to the stationary component, the container likewise moves. In such an embodiment, the runner portion serves to connect the container to the holder without a sliding engagement therebetween. In addition, the container can be formed without upper rail 54 (see FIG. 3) by forming the runner portion in another way, such as by folding the upper edge of the basket portion upon itself to form a sufficiently-rigid integral runner portion. Alternatively, the runner portion need not extend around the entire basket and may extend only on the sides to work with the runners 26a-g (See FIG. 1). In such an embodiment, the end walls without the runner portions may have upper edges finished with portions of metal, wood, plastic or some other suitable material. Thus, the details of the present invention as set forth in the above-described preferred embodiments should not limit the scope of the present invention.


Anspruch[de]
Ein Behälter (14a, 14b, 14c, 14d, 114b, 314a, 314b) bestehend aus ersten (72), zweiten (74) und dritten (76) Gittermaterialteilen, die durch Durchlöchern und Strecken von Metall geformt werden:

das erste metallische Gittermaterialteil (72) wird gebogen, um eine Bodenwand zu bilden (56) und erste und zweite Seitenwälle (62), die sich nach oben von der genannten Bodenwand (56) erstrecken und die Bodenwand umfasst außerdem voneinander entfernte erste und zweite Kanten; das zweite Gittermaterialteil (74) wird unabhängig vom oben genannten ersten Gittermaterialteil (72) geformt, und das zweite Gittermaterialteil (74) wird mit der oben genannten Bodenwand (56) verbunden, neben der ersten Kante, und gebogen, damit eine dritte Seitenwand (58) gebildet wird, die sich von der genannten Bodenwand (56) nach oben erstreckt, und die dritte Seitenwand (58) wird weiter gebogen, um eine zentrale dritte Seitenwand (74c) zu formen, die sich zwischen einem Paar dritter Seitenwand-Gittermaterialerweiterungen (74d) befindet, und die dritte Seitenwand-Gittererweiterung (74d) formt ein Seitenwandkantenpaar (64), von denen jedes Paar eine dritte Seitenwandkante hat; und

das dritte Gittermaterialteil (76) wird unabhängig von den oben genannten ersten und zweiten Gittermaterialteilen (72, 74) geformt und das dritte Gittermetallteil (76) wird mit der oben genannten Bodenwand (56) neben der zweiten Kante verbunden, und gebogen, damit eine vierte Seitenwand (60) gebildet wird, die sich von der genannten Bodenwand (56) nach oben erstreckt, und die vierte Seitenwand (60) einschließlich Kanten der vierten Seitenwand werden weiter gebogen, um eine zentrale vierte Seitenwand (76c) zu formen, die sich zwischen einem Paar vierter Seitenwand-Gittermaterialerweiterungen (76d) befindet, und die dritte Seitenwand-Gittererweiterung (76d) formt ein Seitenwandkantenpaar (64), von denen jedes Paar eine dritte Seitenwandkante hat;

wobei die genannten Gittermaterialerweiterungen (74d, 76d) der genannten dritten und vierten Seitenwände (58, 60) mit den genannten Seitenwänden (62) verbunden werden und die genannten ersten und zweiten Seitenwände (62) überlappen, um den Korbteil (55, 55', 155) ausschließlich aus Gittermaterial zu formen.
Der Behälter (14a, 14b, 14c, 14d, 114b, 314a, 314b) von Anspruch 1, außerdem mit einem Läuferteil (54, 54', 154). Der Behälter (14a, 14b, 14c, 14d, 114b, 314a, 314b) von Anspruch 2, wobei der genannte Korbteil (55, 55', 155) außerdem eine obere Sektion (55a') einschließt, die vom Rest des genannten Korbteils (55, 55', 155) nach außen gebogen wird, und der genannte Läuferteil (54') bestehend aus einer Schiene (54'), die einen gekrümmten Teil (54a') hat, die eine Öffnung (54b) definiert, um die obere Sektion (55a') des genannten Korbs (55, 55', 155) aufzunehmen. Der Behälter (14a, 14b, 14c, 14d, 114b, 314a, 314b) von Anspruch 3, wobei die genannte Schiene (54') Schienenerweiterungen (54c') enthält, die winklig von dem genannten gekrümmten Teil (54a') abstehen und die Schienenerweiterung (54c') wird an die Genannte geschweißt. Korbteil (55, 55', 155) nachdem der genannte gekrümmte Teil (54a') zusammengepresst wurde. Der Behälter (14a, 14b, 14c, 14d, 114b, 314a, 314b) von Anspruch 1, wobei die genannten Kanten (64) gekrümmt sind. Der Behälter (14a, 14b, 14c, 14d, 114b, 314a, 314b) von Anspruch 1 zur Benutzung mit Rahmen (12), und der genannte Behälter (14a, 14b, 14c, 14d, 114b, 314a, 314b) ist beweglich in Bezug auf den genannten Rahmen (12) zwischen der eingefahrenen und der ausgefahrenen Position. Der Behälter (14a, 14b, 14c, 14d, 114b, 314a, 314b) von Anspruch 6, wobei der genannte Rahmen (12) ein Läuferpaar (26a-g) einschließt, jedes Paar hat eine Lücke (28), um den genannten Läuferteil (54, 54', 154) gleitend aufzunehmen. Der Behälter (14a, 14b, 14c, 14d, 114b, 314a, 314b) von Anspruch 2, wobei der genannte Läuferteil (54, 54', 154) eine Schiene (54, 54', 154) ist, die getrennt von dem Korbteil (55, 55', 155) geformt und an diesen geschweißt wird. Der Behälter (14a, 14b, 14c, 14d, 114b, 314a, 314b) von Anspruch 2, wobei der genannte Läuferteil (54, 54', 154) sich über den gesamten Umfang des genannten Korbteils (55, 55', 155) erstreckt. Ein Methode zur Herstellung des Behälters (14a, 14b, 14c, 14d, 114b, 314a, 314b) aus ersten (72), zweiten (74) und dritten (76) Gittermaterialteilen, die durch Durchlöchern und Strecken von Metall geformt werden, bestehend aus den folgenden Schritten: das Formen des ersten Gittermaterialteils (72); biegen des genannten ersten Gittermaterialteils (72) in eine Bodenwand (56) und in erste und zweite getrennte Seitenwände (62), die sich von der genannten Bodenwand (56) nach oben erstrecken, und die genannte Bodenwand (56) umfasst außerdem getrennte erste und zweite Kanten; Formen des zweiten Gittermaterialteils (74), unabhängig vom genannten ersten Gittermaterialteil (72); Zusammenfügen des genannten zweiten Gittermaterialteils (74) zur genannten Bodenwand (56) und anschließender ersten Kante; Biegen des zweiten Gittermaterialteils (74), um eine dritte Seitenwand (58) zu formen, die sich nach oben von der genannten Bodenwand (56) erstreckt; Biegen der genannten Seitenwand (58), um ein drittes Seitenwandteil (74c) zu formen, das sich zwischen einem Paar dritter Seitenwand-Gittermaterialerweiterunger (74d) befindet, und die dritten Seitenwand-Gittermaterialerweiterungen (74d) formen ein drittes Seitenwandkantenpaar (64), und jedes Paar hat eine anschließende Seitenwandkante; Formen des dritten Gittermaterialteils (76), unabhängig vom genannten ersten und zweiten Gittermaterialteil (72, 74) Zusammenfügen des genannten dritten Gittermaterialteils (74) zur genannten Bodenwand (56) und anschließender zweiter Kante; Biegen des dritten Gittermaterialteils (74), um eine vierte Seitenwand (60) zu formen, die sich nach oben von der genannten Bodenwand (56) erstreckt; Biegen der genannten vierten Seitenwand (60), um ein zentrales viertes Seitenwandteil (76c) zu formen, das sich zwischen einem Paar vierter Seitenwand-Gittermaterialerweiterungen (76d) befindet, und die vierte Seitenwand-Gittermaterialerweiterungen (76d) formen ein viertes Seitenwandkantenpaar (64), und jedes Paar hat eine anschließende Seitenwandkante; Überlappen der genannten dritten Seitenwand-Gittermaterialerweiterungen (74d, 76d) mit den genannten ersten und zweiten Seitenwänden (62); und Zusammenfügen der genannten dritten und vierten Seitenwand-Gittermaterialerweiterungen (74d, 76d) mit den genannten ersten und zweiten Seitenwänden (62), um ein Korbteil (55, 55', 155) zu formen, nur aus Gittermaterial mit einer sich nach oben erstreckenden Öffnung (66). Die Methode von Anspruch 10, wobei die Schritte des Zusammenfügens der genannten zweiten Gittermaterialteile (74) mit der genannten Bodenwand (56), des Zusammenfügens des dritten Gittermaterialteils (76) mit der genannten Bodenwand (56) jeweils einen Schweißschritt umfasst. Die Methode von Anspruch 10, die einen Läuferteil (54, 54', 154) oben auf dem genannten Korb (55, 55', 155) umfasst. Die Methode von Anspruch 12, wobei der Schritt des Formens des genannten Läuferteils (54, 54', 154) auch die Schritte der Formung der Schiene (54, 54', 154), unabhängig vom genannten Korbteil (55, 55', 155), umfasst, und das Verbinden der genannten Schiene (54, 54', 154) mit dem genannten Korbteil (55, 55', 155). Die Methode von Anspruch 13, wobei der Schritt des Verbindens der genannten Schiene (54, 54', 154) mit dem genannten Korbteil (55, 55', 155) auch den Schritt des Schweißens umfasst. Die Methode von Anspruch 11, wobei der Schritt des Zusammenfügens der genannten Seitenwand-Gittermaterialerweiterungen (74d, 76d) mit den genannten ersten und zweiten Seitenwänden (62) auch den Schritt des Schweißens umfasst. Die Methode von Anspruch 10, wobei der genannte Schritt des Zusammenfügens auch den Schritt der Benutzung einer Vorrichtung (86 , 88 , 9 0 , 92b) umfasst, um die ersten, zweiten und dritten Gittermaterialteile (72, 74, 76) zu stützen, und die Vorrichtung (86, 88. 90, 92b) zusammen mit einer Elektrode (92b) stützt die genannten ersten, zweiten und dritten Gittermaterialteile (72, 74, 76).
Anspruch[en]
A container (14a, 14b, 14c, 14d, 114b, 314a, 314b) comprising first (72), second (74) and third (76) pieces of mesh material being formed by piercing and stretching of metal: the First piece (72) of metal mesh material bent to form a bottom wall (56) and first and second spaced apart sidewalls(62) extending upwardly from said bottom wall (56), said bottom wall (56) further including spaced apart first and second edges; the second piece (74) of metal mesh material formed separate from said first piece (72) of metal mesh material, said second piece (74) of metal mesh material joined to said bottom wall (56) adjacent said first edge and bent to form a third sidewall (58) upwardly extending from said bottom wall (56), said third sidewall (58) further bent to form a central third sidewall portion (74c) located between a pair of third sidewall mesh extensions (74d), said third sidewall mesh extensions (74d) forcing a pair of third sidewall corners (64) each having an adjacent third sidewall edge; and the third piece (76) of metal mesh material formed separate from said first and second pieces (72, 74) of metal mesh material, said third piece (76) of metal mesh material joined to said bottom wall (56) adjacent said second edge and bent to form a fourth sidewall (60) upwardly extending from said bottom wall (56), said fourth sidewall (60) including fourth sidewall edges, said fourth sidewall (60) further bent to form a central fourth sidewall portion (76c) located between a pair of fourth sidewall mesh extensions (76d), said fourth sidewall mesh extensions (76d) forming a pair of fourth sidewall corners (64) each having an adjacent fourth sidewall edge; wherein said mesh extensions (74d, 76d) of said third and fourth sidewalls (58, 60) are joined to said first and second sidewalls (62) and overlap said first and second sidewalls (62) to form a basket portion (55, 55', 155) only of mesh material. The container (14a, 14b, 14c, 14d, 114b, 314a, 314b) of claim 1, further including a runner portion (54, 54', 154). The container (14a, 14b, 14c, 14d, 114b, 314a, 314b) of claim 2, wherein said basket portion (55, 55', 155) further includes an upper section (55a') bent to extend outwardly from the remainder of said basket portion (55, 55', 155), said runner portion (54') comprising a rail (54') having a curved portion (54a') defining an opening (54b') for receiving said upper section (55a') of said basket portion (55, 55', 155). The container (14a, 14b, 14c, 14d, 114b, 314a, 314b) of claim 3, wherein said rail (54') further includes a rail extension (54c') angularly offset from said curved portion (54a'), said rail extension (54c') being welded to said basket portion (55, 55', 155) after said curved portion (54a') is compressed The container (14a, 14b, 14c, 14d, 114b, 314a, 314b) of claim 1, wherein said corners (64) are curved. The container (14a, 14b, 14c, 14d, 114b, 314a, 314b) of claim 1, for use with a frame (12), said container (14a, 14b, 14c, 14d, 114b, 31a, 314b) being moveable with respect to said frame (12) between retracted and extended positions. The container (14a, 14b, 14c, 14d, 114b, 314a, 314b) of claim 6, wherein said frame (12) further includes a pair of runners (26a-g) each having a gap (28) therein for slidably receiving said runner portion (54, 54', 154). The container (14a, 14b, 14c, 14d, 114b, 314a, 314b) of claim 2, wherein said runner portion (54, 54', 154) is a rail (54, 54', 154) separately formed from said basket portion (55, 55', 155)and welded thereto. The container (14a, 14b, 14c, 14d, 114b, 314a, 314b) of claim 2, wherein said runner portion (54, 54', 154) extends about the entire perimeter of said basket portion (55, 55', 155). A method of forming a container (14a, 14b, 14c, 14d, 114b, 314a, 314b) from first (72), second (74) and third (76) pieces of mesh material being formed by piercing and stretching of metal comprising the following steps: forming the first piece (72) of mesh material; bending said first piece (72) of mesh material into a bottom wall (56) and first and second spaced apart sidewalls(62) extending upwardly from said bottom wall (56), said bottom wall (56) further including spaced apart first and second edges; forming the second piece (74) of mesh material, separate from said first piece (72) of mesh material; joining said second piece (74) of mesh material to said bottom wall (56) adjacent said first edge; bending said second piece (71) of mesh material to form a third sidewall (58) upwardly extending from said bottom wall (56); bending said third sidewall (58) to form a central third sidewall portion (74c) located between a pair of third sidewall mesh extensions (74d), said third sidewall mesh extensions (74d) forming a pair of third sidewall corners (64) each having an adjacent third sidewall edge; forming the third piece(76) of mesh material, separate from said first and second pieces (72, 74) of mesh material; joining said third piece (74) of mesh material to said bottom wall (56) adjacent said second edge; bending said third piece (74) of mesh material to form a fourth sidewall (60) upwardly extending from said bottom wall (56); bending said fourth sidewall (60) to form a central fourth sidewall portion (76c) located between a pair of fourth sidewall mesh extensions (76d), said fourth sidewall mesh extensions (76d) forming a pair of fourth sidewall corners (64) each having an adjacent fourth sidewall edge; overlapping said third and fourth sidewall mesh extensions (74d, 76d) with said first and second sidewalls (62); and joining said third and fourth sidewall mesh extensions (74d, 76d) with said first and second sidewalls (62) to form a basket portion (55, 55', 155) only of mesh material with an upwardly-extending opening (66). The method of claim 10, wherein the steps of joining said second piece (74) of mesh material to said bottom wall (56), joining said third piece (76) of mesh material to said bottom wall (56), each further include the step of welding. The method of claim 10, further including forming a runner portion (54, 54', 154) on the top of said basket portion (55, 55', 155). The method of claim 12, wherein the step of forming said runner portion (54, 54', 154) further includes the step of forming a rail (54, 54', 154) separate from said basket portion (55, 55', 155) and connecting said rail (54, 54', 154) to said basket portion (55, 55' , 155). The method of claim 13, wherein the step of connecting said rail (54, 54', 154) to said basket portion (55, 55', 155) further includes the step of welding. The method of claim 11, wherein the step of joining said third and fourth sidewall mesh extensions (74d, 76d) with said first and second sidewalls (62) further includes the step of welding. The method of claim 10, wherein said joining steps each further include the step of using a fixture (86, 88, 90, 92b) to support said first, second, and third pieces (72, 74, 76) of mesh material, said fixture (86, 88, 90, 92b) including an electrode (92b) for supporting said first, second, and third pieces (72, 74, 76) of mesh material.
Anspruch[fr]
Un récipient (14a, 14b, 14c, 14d, 114b, 314a, 314b) composé d'une première (72), d'une deuxième (74) et d'une troisième (76) pièce de treillis formées par perçage et étirement de métal : la première pièce (72) de treillis métallique courbée pour former un fond (56) et les première et deuxième parois latérales espacées (62) se déployant vers le haut partir du fond (56), ce fond (56) comprenant également le premier et le deuxième bord espacés ; la deuxième pièce (74) de treillis métallique formée séparément de la première pièce (72) de treillis métallique, la deuxième pièce (74) de treillis métallique raccordé au fond (56) de façon adjacente au premier bord et courbée pour former une troisième paroi latérale (58) se déployant vers le haut à partir du fond (56), la troisième paroi latérale (58) courbée également pour former une partie de troisième paroi latérale centrale (74c) située entre la paire d'extensions de troisième treillis latéral (74d), ces extensions de troisième treillis latéral (74d) formant une paire de coins de troisième paroi latérale (64), chacun comportant un bord de troisième paroi latérale adjacent ; et la troisième pièce (76) de treillis métallique formée séparément de la première pièce de treillis métallique et de la deuxième pièce (72, 74) de treillis métallique, la troisième pièce (76) de treillis métallique raccordé au fond (56) de façon adjacente au deuxième bord et courbée pour former une quatrième paroi latérale (60) comprenant quatre coins de paroi latérale, cette quatrième paroi latérale (60) étant également courbée pour former une partie de quatrième paroi latérale centrale (76c) située entre la paire d'extensions de quatrième treillis latéral (76d), ces extensions de quatrième treillis latéral (76d) formant une paire de coins de quatrième paroi latérale (64), chacun comportant un bord de quatrième paroi latérale adjacent ; où les extensions de treillis (74d, 76d) des troisième et quatrième parois latérales (58, 60) sont raccordées à la première et à la deuxième paroi latérale (62) et chevauchent la première et la deuxième paroi latérale (62) pour former une partie panier (55, 55', 1SS) uniquement en treillis. Le récipient (14a, 14b, 14c, 14d, 114b, 314a, 314b) de la revendication 1, comprenant également une partie coulisseaux (54, 54', 154). Le récipient (14a, 14b, 14c, 14d, 114b, 314a, 314b) de la revendication 2, où la partie panier (55, 55', 155) inclut aussi une section supérieure (55a') courbée vers l'extérieur du reste de cette partie panier (55, 55', 155), cette partie coulisseaux (54') comprenant un rail (54') ayant une partie courbée (54a') définissant une ouverture (54b') pour recevoir la section supérieure (55a') de cette partie panier (55, 55', 155). Le récipient (14a, 14b, 14c, 14d, 114b, 314a, 314b) de la revendication 3, où le rail (54') comprend une extension de rail (54c") dont l'angle est décalé par rapport à la partie courbée (54a'), cette extension de rail (54c') étant soudé à la partie panier (55, 55', 155) une fois la partie courbée (54a') comprimée. Le récipient (14a, 14b, 14c, 14d, 114b, 314a, 314b) de la revendication 1, ou les coins (64) sont courbés. Le récipient (14a, 14b, 14c, 14d, 114b, 314a, 314b) de la revendication 1, pour utilisation avec un cadre (12), le récipient (14a, 14b, 14c, 14d, 114b, 314a, 314b) étant mobile par rapport au cadre (12) entre les positions entrée et sortie. Le récipient (14a, 14b, 14c, 14d, 114b, 314a, 314b) de la revendication 6, où le cadre (12) comprend aussi une paire de coulisseaux (26a-g), chacun ayant un espace à glissière (28) pour recevoir la partie coulisseau (34, 54', 154). Le récipient (14a, 14b, 14c, 14d, 114b, 314a, 314b) de la revendication 2, où la partie coulisseaux (54, 54', 154) est un rail (54, 54', 154) formé séparément de la partie panier (55, 55', 155) et soudé dessus. Le récipient (14a, 14b, 14c, 14d, 114b, 314a, 314b) la revendication 2, où la partie coulisseaux (54, 54', 154) se déploie sur tout le périmètre de la partie panier (55, 55', 155). Une méthode de formation du récipient (14a, 14b, 14c, 14d, 114b, 314CJ, 314b) à partir d'une première (72), d'une deuxième (74) et d'une troisième (75) pièce de treillis formées par perçage et étirement du métal, dont les étapes suivantes : formation de la première pièce (72) de matériau de treillis ; courbure de la première pièce (72) de treillis pour former un fond (56) et des première et deuxième parois latérales espacées (62) se déployant vers le haut partir du fond (56), ce fond (56) comprenant également le premier et le deuxième bord espacés ; formation de la deuxième pièce (74) de treillis, séparé de la première pièce (72) de treillis raccordement de la deuxième pièce (74) de treillis au fond (56) adjacent au premier bord ; courbure de la deuxième pièce (74) de treillis pour former la troisième paroi latérale (58) se déployant vers le haut à partir du fond (56) ; Courbure de la troisième paroi latérale (58) afin de former une partie centrale de la troisième paroi latérale (74c) située entre une paire d'extensions de treillis de troisième paroi latérale (74d), ces extensions de treillis de troisième paroi latérale (74d) formant une paire de coins de troisième paroi latérale (64), chacun ayant un bord de paroi latérale adjacent : formation de la troisième pièce (76) de treillis, séparé de la première et de la deuxième pièce (72,74) de treillis ; raccordement de la troisième pièce (74) de treillis au fond (56) adjacent au deuxième bord ; courbure de la troisième pièce (74) de treillis pour former la quatrième latérale (60) se déployant vers le haut à partir du fond (56) ; courbure de la quatrième paroi latérale (60) afin de former une partie centrale de la quatrième paroi latérale (76c) située entre une paire d'extensions de treillis de quatrième paroi latérale (76d), ces extensions de treillis de quatrième paroi latérale (76d) formant une paire de coins de quatrième paroi latérale (64), chacun ayant un bord de paroi latérale adjacent : chevauchement des extensions de treillis de la troisième et de la quatrième paroi latérale (74d, 76d) avec les première et deuxième parois latérales (62) ; et le raccordement des extensions de treillis de la troisième et de la quatrième paroi latérale (74d, 76d) à la première et à la deuxième paroi latérale (62) afin de former la partie panier (55, 55', 155) en treillis seulement avec une ouverture se déployant vers le haut (66). La méthode de la revendication 10, où les étapes de raccordement de la deuxième pièce (74) de treillis au fond (56), raccordant la troisième pièce (76) de treillis au fond (56), chacune incluant l'étape de soudure. La méthode de la revendication 10 comprenant aussi la formation d'une partie coulisseau (54, 54', 154) en haut de la partie panier (55, 55', 155). La méthode de la revendication 12, où l'étape de formation de la partie coulisseau (54, 54', 154) comprend aussi l'étape de formation d'un rail (54, 54', 154) séparé de la partie panier (55, 55', 155) et de raccordement du rail (54, 54', 154) à la partie panier (55, 55', 155). La méthode de la revendication 13, où l'étape de raccordement du rail (54, 54', 154) à la partie panier (55, 55', 155) comprend aussi l'étape de soudure. La méthode de la revendication 11, où l'étape de raccordement des extensions de treillis de la troisième et de la quatrième paroi latérale (74d, 76d) avec la première et la deuxième paroi latérale (62) comprend aussi l'étape de soudure. La méthode de la revendication 10, où les étapes de raccordement comprennent chacun l'étape d'utilisation d'une fixation (86, 88, 90, 92b) pour soutenir la première, la deuxième et la troisième pièce (72, 74, 76) de treillis, la fixation (86, 88, 90. 92b) incluant une électrode (92b) pour la première, la deuxième et la troisième pièce (72, 74, 76) de treillis.






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