# US 2014/0150366 A1 · Method for producing rectangular or square wall elements from flat sheet metal, and wall elements produced therewith > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2014/0150366 A1 - Document ID: US20140150366A1 - Status: Published application - Kind: A1 - Application number: 14/001,501 - Filed: 2012-02-22 - Published: 2014-06-05 - Earliest claimed: 2011-02-25 - Assignees: C E S Control Enclosure Systems GmbH - Inventors: Igor Harry Schaaf; Paul Mazura; Walter Nicolai; Simon Jocham - Web page: https://patentgrep.com/patent/US20140150366A1 ## CPC - B21D 5/16: Folding; Pleating - B23P 19/00: Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation {(connecting metal parts or objects by metal-working procedures B21J, B23K)}; Tools or devices therefor so far as not provided for in other classes (hand tools in general B25) - E04C 2/00: Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels (materials or manufacture, see the relevant subclasses, e.g. B27N, D21J; made in situ E04B; specially designed for insulation or other protection E04B1/62; load-carrying floor structures E04B5/02, E04B5/16; roofs consisting of self-supporting slabs E04B7/20; roof or like covering elements E04D3/00; for lining or finishing E04F13/00) - E04C 2/08: of metal, e.g. sheet metal (E04C2/26 takes precedence) - E04F 13/12: of metal {or with an outer layer of metal or enameled metal (E04F13/0864 takes precedence)} - H02B 1/28: dustproof, splashproof, drip-proof, waterproof or flameproof - H02B 1/301: {mainly consisting of a frame onto which plates are mounted} - H02B 1/013: {Profiles for cabinet frames} - Y10T 29/49906: Metal deforming with nonmetallic bonding - Y10T 29/49956: Riveting - Y10T 29/49963: Threaded fastener - Y10T 29/49968: Metal fusion joining - Y10T 29/49995: Shaping one-piece blank by removing material - B21D: WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL (working or processing of wire B21F) - B23P: METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS (arrangements for copying or controlling B23Q) - E04C: STRUCTURAL ELEMENTS; BUILDING MATERIALS (for bridges E01D; specially designed for insulation or other protection E04B; elements used as building aids E04G; for mining E21; for tunnels E21D; structural elements with broader range of application than for building engineering F16, particularly F16S) - E04F: FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS (windows, doors E06B) - H02B: BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER - Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION ## Abstract The present disclosure relates to a method for producing rectangular or square wall elements from flat sheet metal, including determining a length and width of a wall element, providing a flat sheet metal piece incising two longitudinal edge portions to form two incisions to form two tabs for each longitudinal edge portion separated by a respective incision from the remaining longitudinal edge portion, right-angled folding of a respective strip, formed by the incisions, right-angled folding of the tabs parallel to the longitudinal edge at the level of the base of the associated incision, right-angled folding of the longitudinal edge portions along the longitudinal edge, right-angled folding of the transverse edge portions parallel to the transverse edge to form a strip having a width corresponding to the transverse dimension of the tabs, and right-angled folding of the transverse edge portions along the transverse edge. ## Claims ### Claim 1 A method for producing rectangular or square wall elements from flat sheet metal, comprising: determining a length and width of a wall element; providing a flat sheet metal piece made of flat sheet metal material having a material thickness, which piece has two longitudinal edges of the determined length and two transverse edges of the determined width and projects by a predetermined extent along each longitudinal edge and transverse edge in order to form two mutually opposite longitudinal edge portions and two mutually opposite transverse edge portions having a predetermined edge width, the short lateral edges of the longitudinal edge portions and of the transverse edge portions having a dimension of the edge width; incising the two longitudinal edge portions parallel to the transverse edge close to each short lateral edge in order to form two incisions having an incision length which is smaller than the edge width so as to form two tabs for each longitudinal edge portion which are separated by a respective incision from the remaining longitudinal edge portion and have a transverse dimension; right-angled folding of a respective strip, formed by the incisions, of the remaining longitudinal edge portion parallel to the longitudinal edge, the strip having a width which corresponds at most to the incision length less the material thickness; right-angled folding of the tabs parallel to the longitudinal edge at a level of a base of the associated incision; right-angled folding of the longitudinal edge portions along the longitudinal edge; right-angled folding of the transverse edge portions parallel to the transverse edge to form a strip having a width corresponding to a transverse dimension of the tabs; and right-angled folding of the transverse edge portions along the transverse edge. ### Claim 2 (canceled) ### Claim 3 (depends on 1) The method according to claim 1, further comprising connecting at least one tab to a region of the transverse or longitudinal edge portion arranged upon it. ### Claim 4 (depends on 3) The method according to claim 3, wherein the step of connecting is effected by adhesive bonding, welding, riveting, clinching or screwing. ### Claim 5 (depends on 4) The method according to claim 4, wherein the welding is a spot welding. ### Claim 6 (depends on 1) The method according to claim 1, further comprising producing a hole grid along at least the strips of the longitudinal edge portions or the transverse edge portions. ### Claim 7 (depends on 6) The method according to claim 6, wherein the hole grid has a grid dimension of 25 mm. ### Claim 8 A wall element made of flat sheet metal material of a material thickness, comprising: a rectangular or square main surface which determines two longitudinal edges and two transverse edges, the flat sheet metal material being in one piece and folded inwards at right angles in each case twice, parallel to each longitudinal edge and each transverse edge, in order to form edge regions having a U-shaped edge cross-section; and free limbs, projecting inwards parallel to the main surface, of edge regions of the longitudinal edges or of edge regions of the transverse edges have lateral end portions which are formed by a respective tab which extends parallel to the associated limb in a plane arranged by at least the material thickness of the flat sheet metal material closer to the main surface, wherein lateral end portions of the free limbs, not having tabs, of edge regions of the transverse edges or of edge regions of the longitudinal edges overlap the tabs. ### Claim 9 (depends on 8) The wall element according to claim 8, wherein the lateral end portions of the free limbs not having tabs completely overlap the tabs. ### Claim 10 (depends on 8) The wall element according to claim 8, wherein the lateral end portions of the free limbs not having tabs are adhesively bonded, welded, riveted or screwed to the tabs or connected to them by clinching to one another. ### Claim 11 (depends on 8) The wall element according to claim 8, wherein along the free limbs a respective row of holes is present, the holes being arranged in accordance with a grid dimension. ### Claim 12 A method for producing rectangular or square wall elements from flat sheet metal, comprising: determining a length and width of a wall element; providing a flat sheet metal piece made of flat sheet metal material having a material thickness, which piece has two longitudinal edges of the determined length and two transverse edges of the determined width and projects by a predetermined extent along each longitudinal edge and transverse edge in order to form two mutually opposite longitudinal edge portions and two mutually opposite transverse edge portions having a predetermined edge width, the short lateral edges of the longitudinal edge portions and of the transverse edge portions having the dimension of the edge width; incising the two transverse edge portions parallel to the longitudinal edge close to each short lateral edge in order to form two incisions having an incision length which is smaller than the edge width so as to form two tabs for each transverse edge portion which are separated by a respective incision from the remaining transverse edge portion and have a transverse dimension; right-angled folding of a respective strip, formed by the incisions, of the remaining transverse edge portion parallel to the transverse edge, the strip having a width which corresponds at most to the incision length less the material thickness; right-angled folding of the tabs parallel to the transverse edge at a level of a base of the associated incision; right-angled folding of the transverse edge portions along the transverse edge; right-angled folding of the longitudinal edge portions parallel to the longitudinal edge to form a strip having a width corresponding to a transverse dimension of the tabs; and right-angled folding of the longitudinal edge portions along the longitudinal edge. ### Claim 13 (depends on 12) The method according to claim 12, further comprising connecting at least one tab to the region of the transverse or longitudinal edge portion arranged upon it. ### Claim 14 (depends on 13) The method according to claim 13, wherein the step of connecting is effected by adhesive bonding, welding, riveting, clinching or screwing. ### Claim 15 (depends on 14) The method according to claim 14, wherein the welding is a spot welding. ### Claim 16 (depends on 12) The method according to claim 12, further comprising producing a hole grid along at least the strips of the longitudinal edge portions or the transverse edge portions. ### Claim 17 (depends on 16) The method according to claim 16, wherein the hole grid has a grid dimension of 25 mm.