EP2035161B1 - Procédé permettant de réaliser une colonne à étagères et colonne à étagères - Google Patents

Procédé permettant de réaliser une colonne à étagères et colonne à étagères Download PDF

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Publication number
EP2035161B1
EP2035161B1 EP06764439.3A EP06764439A EP2035161B1 EP 2035161 B1 EP2035161 B1 EP 2035161B1 EP 06764439 A EP06764439 A EP 06764439A EP 2035161 B1 EP2035161 B1 EP 2035161B1
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EP
European Patent Office
Prior art keywords
shelf column
shelf
band
thin metal
metal sheet
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EP06764439.3A
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German (de)
English (en)
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EP2035161A1 (fr
EP2035161A4 (fr
Inventor
Erkki Toivanen
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Individual
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Publication of EP2035161A4 publication Critical patent/EP2035161A4/fr
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D5/00—Bending sheet metal along straight lines, e.g. to form simple curves
    • B21D5/06—Bending sheet metal along straight lines, e.g. to form simple curves by drawing procedure making use of dies or forming-rollers, e.g. making profiles
    • B21D5/08—Bending sheet metal along straight lines, e.g. to form simple curves by drawing procedure making use of dies or forming-rollers, e.g. making profiles making use of forming-rollers
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47B—TABLES; DESKS; OFFICE FURNITURE; CABINETS; DRAWERS; GENERAL DETAILS OF FURNITURE
    • A47B96/00—Details of cabinets, racks or shelf units not covered by a single one of groups A47B43/00 - A47B95/00; General details of furniture
    • A47B96/14—Bars, uprights, struts, or like supports, for cabinets, brackets, or the like
    • A47B96/1408—Bars, uprights, struts, or like supports, for cabinets, brackets, or the like regularly perforated
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D39/00—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders
    • B21D39/02—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders of sheet metal by folding, e.g. connecting edges of a sheet to form a cylinder

Definitions

  • the invention relates to a method for making a shelf column according to claim 1.
  • the invention also relates to a shelf column according to claim 6.
  • a shelf column T-shaped in cross section is made of band-like thin metal sheet by bending the band double with respect to its longitudinal centreline and into a T-shape so that the edges of the band are opposite each other; such shelf colums are known from, for example, DE20201572U .
  • a usual method used in bending band is the roll forming method in which the band is bent stage by stage using pairs of forming rolls placed one after the other, but a basically similar T profile could, for example, be made using an edging press, a bending machine and/or with some other method suitable for bending thin metal sheet.
  • the wider bent edge is so much wider than the narrower bent edge that one can bend the wider edge as the bending stages suitably proceed to form the profile's web plate (that part of the profile which is perpendicular with respect to the flange plate). This takes place by first bending the end part of the wider bent edge (i.e. part of the web plate) first with respect to the rest of the wider bent edge into a perpendicular position and then bending this part approximately halfway along it 180° such that this part is also bent double. When this is done, the finished T profile's band edge with the wider bent edge is against the top surface of the unbent part of the band T against (i.e. this edge of the band in the finished T profile is located at where the web plate and flange plate meet).
  • the second half of the flange plate is made from the narrower bent edge of the band by bending it along its entire width 180°, i.e. doubling it against the unbent part.
  • All the necessary bend sections in the known art T profile have been chosen so that that edge of the band where the web plate and the flange plate meet on the edge adjacent to the wider bent edge, the said edge facing surface of the unbent part of the band in the finished T profile, is compressed against that edge of the band which is adjacent to the narrower bent edge.
  • band edge which is in the area of the lower portion of the web plate), which is adjacent to the edge bent wider, is formed slightly oblique so that it will be compressed against the band edge adjacent to edge, which has the narrower bend.
  • a shelf column with a T-shaped cross section further includes fastening holes formed into the web plate, whereby the shelf sheets can be mounted between the shelf columns can be fastened to the frame formed of shelf columns, and fastening holes formed into the web plate and flange plate whereby the partition walls between the shelves and the back plate can be mounted onto the shelf columns.
  • these openings and holes are pierced into the band raw material prior to roll forming the band to results in a T profile because the piercing an open profile would lead to it opening up during the piercing operation.
  • a problem with the present-day known art T-shaped shelf column is that the web plate and the flange plate are attached to each other at their point of contact merely by one sheet layer because the edges of the thin metal sheet band there are not in any contact with each other in the bent T profile. This reduces the twisting rigidity of the shelf column because the column is a so-called open profile element. Due to this, shelves are often flimsy and therefore for sufficient rigidity to be achieved it becomes necessary to use overly thick metal sheet in the manufacturing of shelf columns. This in turn increases the weight of the shelves and material costs, and makes their manufacturing more difficult.
  • Another problem in present-day shelf columns is that the fastening opening and holes implemented in the overlapping sheet layers do not often exactly coincide because they are made before the band is bent into the T shape. This causes reduction in the size of openings and holes, which in turn causes difficulties when the shelves are assembled.
  • the purpose of the present invention is to accomplish a method for making shelf columns whereby aforementioned problems associated with known art shelf columns made by bending a band of thin metal sheet to be T-shaped in cross section can be eliminated.
  • a particular purpose of the present invention is to demonstrate a method whereby a shelf column T-shaped in cross section and made from a band of thin metal sheet can be so manufactured that the resultant shelf column is significantly superior to known art shelf columns T-shaped in cross section in terms of twisting rigidity and which enables the forming of the necessary fastening openings and fastening holes into the shelf column so that the openings and holes in overlapping sheet layers will coincide.
  • a further purpose of the present invention is to demonstrate a shelf column in accordance with the method in accordance with the invention whereby disadvantages associated with present-day shelf columns are eliminated and which is advantageous to manufacture and which is structurally rigid.
  • the form joint is formed by bending locking bends into the edges of the band of thin metal sheet, these locking bends being bent to oppose each other in conjunction with the bending of the shelf column's T profile and this is also when the locking bends are fitted at least partly within each other and locked to each other. This enables such a form joint to be achieved that it's manufacturing mostly succeeds during the bending stages of the T profile of the shelf column.
  • a sealed profile is obtained from the T profile of the cross section of the shelf column, which results in considerably increasing the twisting rigidity of the shelf when compared to known art shelf columns formed using open profile elements. Consequently, a shelf column T-shaped in cross section in accordance with the present invention can be made using a thinner band of metal sheet than known art shelf columns T-shaped in cross section and yet a shelf column in accordance with the invention is more rigid and stronger, and distinctly lighter than known art shelf columns.
  • the fastening openings and/or holes formed to this kind of a shelf column can be executed after the stages of bending necessary in forming an element T-shaped in cross section because the attachment between the edges of the band of thin metal sheet prevents the profile from opening up during the piercing action.
  • the openings and holes executed into the sheet layers of the shelf column always coincide precisely and thereby the reduction in size of the fastening openings and/or holes in the separate sheet layers, which is typical of known art shelf columns because of the non-concentricity of the openings and/or holes, is avoided.
  • a band of thin metal sheet is bent such that the form joint formed of the locking bends occurs in the joint area between the flange plate and the web plate in the finished shelf column.
  • This procedure results in a form joint of minimal prominence and of minimum obstruction with respect to the use of the finished shelf column, as well as resulting in a shelf column of maximum cross-sectional symmetry.
  • the joint area between the web plate and the flange plate is provided with several overlapping sheet layers, which considerably adds to the strength and rigidity of this section of the shelf column, which is subject to heavy loads, and makes it superior to the similar sections of known art shelf columns.
  • At least some of the bends necessary for the locking bends are made before commencing with the bending stages of the flange plate and/or at their initial stage, and the locking bends are locked to each other at the final stage of the stages of bending the flange plate and the web plate and/or after them.
  • This procedure enables maximum simplicity and efficacy to be achieved in forming the locking bends required for the form joint, and with little disturbance to the other bends necessary in forming the T profile.
  • seam depressions are formed in the web plate within this area in order to fit the form joint between the sheet layers located one on top of the other in the web plate.
  • the shelf column in accordance with the invention is characterised in that the form joint includes the locking bends formed along the edges of the band of thin metal sheet, the said locking bends having been bent opposite each other concurrently with the bending of the T profile of the shelf column and being at least partly fitted within each other and locked to each other.
  • the twisting rigidity of this kind of a shelf column T-shaped in cross section is considerably greater than the twisting rigidity of known art shelf columns constructed to have an open profile. Consequently, a shelf column T-shaped in cross section can be made from a thinner band of metal sheet than known art shelf columns T-shaped in cross section and yet a shelf column in accordance with the invention is more rigid and stronger, and because of the lighter material distinctly lighter than known art shelf columns.
  • the necessary fastening openings and/or holes can be pierced into this kind of a shelf column after the bending of the T profile whereupon the openings and/or holes required for the different sheet layers will always precisely coincide with the corresponding fastening opening and/or hole location.
  • the form joint is located in the web plate, in the joint area between the flange plate and the web plate.
  • a form joint thus placed increases the rigidity and strength of the shelf column, because the form joint results in multiple overlapping sheet layers being formed in the joint area between the flange plate and the web plate.
  • the locking bends which are part of form bend, are mainly U-shaped in cross section. Locking bends of this kind enable such a form joint to be achieved as is strong and readily manufactured in conjunction with the bending stages of the shelf column's T profile and the resultant form joint can be easily manufactured to be inconspicuous and not to hinder the installation of a shelf column.
  • the shelf column has seam depressions formed in the band of thin metal sheet at the form joint. Because of the seam depressions, the form joint is implemented in the middle of doubled sheet layers of the band of thin metal sheet as a result of which the form joint portion becomes symmetrical and of minimum conspicuousness.
  • the shelf column 17 in accordance with the invention and illustrated in Fig. 1 has been formed of a band of thin metal sheet 1, whose edges have been bent double against the unbent portion of the band remaining between them and such that a horizontal flange plate 2 is formed in the shelf column and a horizontal web plate 3 is formed in its middle, mainly in a vertical position with respect to it.
  • the shelf column includes shelf sheets' fastening openings 4 and partition wall fastening holes 6 being executed into the web plate 3, and fastening holes 6 for the back plate being executed into the flange plate.
  • the shelf column in accordance with Fig. 1 is such that the edges of the band of thin metal sheet 1 have been fastened to each other by means of a form joint 7, which is located in the joint area between the flange plate 2 and the web plate 3.
  • the shelf column 17 in accordance with Fig. 1 is mainly made in a roll forming and piercing unit illustrated in Fig. 2 .
  • the raw material for the shelf column consists of a band of thin metal sheet 1 on a reel, which is opened using a winding-off machine (not shown in Fig. 2 ) located at the front of a roll forming and piercing unit.
  • Roll forming part 20 is placed at the begin end of the roll forming and piercing unit, the said roll forming part 20 being used to bend the edges of the band of thin metal sheet 1 two fold with the other parts of the sheet such that the cross section of the band will be T-shaped as shown in Fig. 1 . In this case, this takes place in 22 bending stages (i.e.
  • the finished T profile is passed on to the piercing section 21 further on along the line where the hexagonal fastening openings 4 for the shelf sheets and the fastening holes 5 for the back plate and the fastening holes 6 for the side/partition walls are executed on the web plate 3 of the T profile.
  • the ready finished shelf column band is cut to shelf columns of specified length by means of the cut-off device (not illustrated in Fig. 2 ) following the roll forming and piercing unit along the production line.
  • the band winding-off machine, the roll forming and piercing unit 21, and the cut-off device are mainly known art as regards their operating principles and structure.
  • Roll forming part 20 of the roll forming and piercing unit also corresponds to known art T-shaped shelf column forming machines as regards its basic operating principles.
  • roll forming does differ from known art shelf column forming that the forming stages for form joint 7 have been added in connection with the bending stages for T profile forming.
  • the bending operations executed at different stages of roll forming are shown in Fig. 3 as regards their foremost features.
  • stages 3-7 launch the bending of the upper sheet layers 10 and 11 of the flange plate 2 in the direction of the unbent portion 12 of the band, the said unbent portion becoming the flange plate's lower sheet.
  • Stage 8 is when the seam depression 15 is formed near the edge of the band, in the web plate's sheet layer 14.
  • bending of the flange plate's upper sheet layer 10 continues as Stages 9-13 towards the band's unbent portion 12, and bending of the web plate's sheet layer 14 begins such that it is turned towards sheet layer 13.
  • Stage 14 is when a seam depression 16 is formed in sheet layer 13.
  • sheet layer 14 is more or less at a right angle to sheet layer 13 and the upper sheet layer 10 of the flange plate is against the band's unbent part 12. From here on, the bending continues as Stages 15-22 in the manner illustrated in Fig. 4 , i.e.
  • Stage 22 is when the locking bends 8 and 9 are compressed within each other and tightly against each other so that they become locked to each other.
  • the upper sheet layers are 10 and 11 of the flange plate 2 are against the band's unbent portion 12 and the sheet layers 13 and the 14 of the web plate 3 are opposite to each other.
  • Form joint 7 formed between the flange plate and the web plate as the result of locking bends 8 and 9 is between the seam depressions 15 and 16 in the joint area of the flange plate and the web plate such that the finished T profile is symmetrical in cross section and minimally conspicuous when viewing the web plate from the side.
  • FIG. 5 shows an example of this kind of a shelf unit having several shelf sheets 18 one on top of the other and assembled using shelf columns in accordance with Figs. 1-4 .
  • the shelf columns 17 are installed such that their web plates 3 face each other.
  • the shelf sheets 18 to be mounted between the shelf columns 17 are fastened by means of the fastening openings 4 against the right-angled corners formed between the flange plate and 2 and the web plate 3 using the hook-like protrusions (not shown in Fig.
  • a cross-like stiffening brace 19 (or a back sheet, for example) is fastened to the fastening holes 5 between the shelf columns at the back of the shelf unit to ensure that the shelf unit stays together and to brace the shelves.
  • Sidewalls may also be fastened to the sides of the shelf unit (not illustrated in Fig. 5 ).
  • the sidewalls serve as partitions between adjacent shelf compartments assuming that the shelves comprise several side-by-side fastened/set shelf units.
  • the side walls/partitions are fastened to the shelf columns by means of the fastening holes 6 for partitions located in the web plates.
  • Machine screws for example, can be used as the fastening items for side walls/partitions and the cross-like stiffening brace, but other suitable fastening items are also possible.
  • shelf column in accordance with the invention can be implemented deviating in many respects from the above application example.
  • shelf columns the feature that the sheet layers of the web plate and of the flange plate remain against each other is ensured by forming edge enclosures at the end of the web plate and at both ends of the flange plate, i.e. these being parts in which the overlapping sheet layers have so formed that they are separately from each other and thereby form an enclosure-like structure for this section.
  • edge enclosures of this kind can also be implemented in the shelf column in accordance with the invention.
  • Fig. 6 shows a shelf column, which corresponds to the application in accordance with Fig.
  • edge enclosures 30, 31 and 32 have been formed along the free edge of its web plate and along both edges of the flange plate. These edge enclosures further enable additional twisting rigidity and robustness to be achieved for the shelf column. In some further applications deviating from the preceding ones, the edge enclosure has been formed only along both edges of the flange plate or merely along the free edge of the web plate.
  • the form joint characteristic of a shelf column in accordance with the inventive method can be implemented in several different ways to that in the above example application. For example, the form, size and order of bending of the locking bends required for the form joint can be varied, depending on factors such as the thickness of the metal sheet used and the external dimensions of the shelf column. Moreover, the location of the form joint along the T profile can vary. In one shelf column in accordance with the invention the form joint has been placed along the free edge of the web plate. This solution enables it to be used to replace the edge enclosure formed along the edge of the web plate.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Assembled Shelves (AREA)

Claims (8)

  1. Procédé pour la fabrication d'une colonne d'étagère, procédé dans lequel une colonne d'étagère (17) présentant une section transversale quasiment en forme de T et comprenant une tôle de rebord (2) ainsi qu'une tôle d'âme (3) quasiment perpendiculaire à celle-ci, avec des ouvertures (4) et/ou des trous (5, 6) nécessaires pour fixer les autres parties d'étagère (18, 19) à la colonne d'étagère, est constituée à partir d'une bande de feuille métallique fine (1) réalisée à l'aide de procédés techniques pour feuilles, et procédé dans lequel les bords de la feuille métallique fine (1) sont au moins partiellement repliés en double avec d'autres parties de la feuille, de sorte que lorsque le pliage de la feuille métallique fine (1) est terminé, la section transversale de la feuille métallique fine se présente quasiment sous forme de T, et procédé dans lequel un joint d'assemblage (7) est formé entre les bords afin de fixer les bords les uns aux autres, caractérisé en ce que le joint d'assemblage (7) est formé en pliant les coudes de verrouillage (8, 9) dans les bords de la bande de feuille métallique fine (1), lesdits coudes de verrouillage (8, 9) étant pliés lors du pliage du profilé en T de la colonne d'étagère (17), les uns en face des autres et de manière à les ajuster au moins partiellement les uns dans les autres et à les verrouiller entre eux, et la bande de feuille métallique fine (1) étant pliée de manière à ce que dans la colonne d'étagère (17) finie, le joint d'assemblage (7) constitué des coudes de verrouillage (8, 9) apparaisse dans la zone d'assemblage située entre la tôle de rebord (2) et la tôle d'âme (3).
  2. Procédé selon la revendication 1, caractérisé en ce qu'au moins certains des coudes nécessaires pour former les coudes de verrouillage (8, 9) sont réalisés avant de commencer les étapes de pliage de la tôle de rebord (2) et de la tôle d'âme (3) et/ou tout au début du pliage de celles-ci, et en ce que les coudes de verrouillage (8, 9) sont verrouillés entre eux au cours de l'étape finale de pliage de la tôle de rebord et de la tôle d'âme et/ou après le pliage de celles-ci.
  3. Procédé selon la revendication 1 ou 2, caractérisé en ce que des creux d'assemblage (15, 16) sont formés dans une zone dans la tôle d'âme (3) leur permettant de correspondre avec le joint d'assemblage entre les couches de feuille (13, 14) disposées les unes sur les autres sur la tôle d'âme.
  4. Procédé selon l'une quelconque des revendications 1 à 3, caractérisé en ce qu'une bande de feuille métallique fine (1) est pliée pour former une bande de colonne d'étagère par laminage avec une section transversale quasiment en forme de T, et en ce que les ouvertures de fixation (4) et/ou les trous de fixation (5, 6) nécessaires à la colonne d'étagère (17) sont percés dans la bande de colonne d'étagère après l'étape de laminage.
  5. Procédé selon l'une quelconque des revendications 1 à 4, caractérisé en ce que la bande de feuille métallique fine dont la mise en forme et le perçage sont terminés est découpée pour réaliser des colonnes d'étagère (17) de la longueur souhaitée après les étapes de mise en forme et de perçage.
  6. Colonne d'étagère (17) présentant une section transversale quasiment en forme de T et comprenant une tôle de rebord (2) ainsi qu'une tôle d'âme (3) perpendiculaire à celle-ci, et des ouvertures (4) et/ou des trous (5, 6) nécessaires pour fixer les autres parties d'étagère (18, 19) à la colonne d'étagère, ladite colonne d'étagère (17) étant constituée d'une bande de feuille métallique fine (1) au moins partiellement pliée en double et présentant une section transversale quasiment en forme de T, à l'aide de procédés techniques pour feuilles, et la colonne d'étagère (17) comportant un joint d'assemblage (7) entre les bords de la feuille métallique fine (1) pour fixer les bords les uns aux autres, caractérisée en ce que le joint d'assemblage (7) comprend des coudes de verrouillage (8, 9) formés le long des bords de la bande de feuille métallique fine (1), lesdits coudes de verrouillage (8, 9) étant pliés lors du pliage du profilé en T de la colonne d'étagère (17), les uns en face des autres, et de manière à les ajuster au moins partiellement les uns dans les autres et à les verrouiller entre eux, et en ce que le joint d'assemblage (7) se trouve dans la tôle d'âme (3) dans la zone d'assemblage entre la tôle de rebord (2) et la tôle d'âme (3).
  7. Colonne d'étagère selon la revendication 6, caractérisée en ce que les coudes de verrouillage (8, 9) présentent une section transversale quasiment en forme de U.
  8. Colonne d'étagère selon la revendication 6 ou 7, caractérisée en ce que la colonne d'étagère (17) possède des creux d'assemblage (15, 16) formés dans la bande de feuille métallique fine (1) à l'endroit où se trouve de joint d'assemblage (7).
EP06764439.3A 2006-06-19 2006-06-19 Procédé permettant de réaliser une colonne à étagères et colonne à étagères Active EP2035161B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/FI2006/000213 WO2008003813A1 (fr) 2006-06-19 2006-06-19 Procédé permettant de réaliser une colonne à étagères et colonne à étagères

Publications (3)

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EP2035161A1 EP2035161A1 (fr) 2009-03-18
EP2035161A4 EP2035161A4 (fr) 2013-03-13
EP2035161B1 true EP2035161B1 (fr) 2013-09-18

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Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2690988B1 (fr) * 2011-03-31 2018-03-07 Finger Lakes Intellectual Property, LLC Élément de cadre de lit unitaire en forme de t
DE102016205605A1 (de) * 2016-04-05 2017-10-05 Peri Gmbh Riegel
GB201620745D0 (en) 2016-12-06 2017-01-18 Ge Oil & Gas Uk Ltd immobilised insert
AT521757B1 (de) * 2018-09-28 2021-05-15 Slavonia Baubedarf Gmbh Tragprofil für eine Fassadenkonstruktion

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB846315A (en) * 1956-10-17 1960-08-31 Sergram Improvements in and relating to metalic box sections
BE755358A (fr) * 1969-08-28 1971-02-01 Rapena Patent & Verwaltungs Ag
US4206578A (en) * 1978-07-31 1980-06-10 Donn Incorporated Grid tee for suspension ceilings or the like
DE3525139A1 (de) * 1985-07-13 1987-01-15 Richter System Gmbh & Co Kg Tragschiene fuer unterdecken
US5088309A (en) * 1990-04-23 1992-02-18 Knudson Gary Art Rotary punch
GB2274080B (en) * 1993-01-08 1995-09-06 Armstrong World Ind Inc Ceiling runners and process for producing same
US6047511A (en) * 1998-03-04 2000-04-11 Usg Interiors, Inc. Grid tee with integrally stitched web
DE20201572U1 (de) * 2002-02-02 2002-06-27 Richter System Gmbh & Co Kg T-Profil aus Blech

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EP2035161A1 (fr) 2009-03-18
WO2008003813A1 (fr) 2008-01-10
EP2035161A4 (fr) 2013-03-13

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