EP3768906B1 - Holzbaustein - Google Patents

Holzbaustein Download PDF

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Publication number
EP3768906B1
EP3768906B1 EP19716284.5A EP19716284A EP3768906B1 EP 3768906 B1 EP3768906 B1 EP 3768906B1 EP 19716284 A EP19716284 A EP 19716284A EP 3768906 B1 EP3768906 B1 EP 3768906B1
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EP
European Patent Office
Prior art keywords
timber
pieces
transverse
width
length
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP19716284.5A
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German (de)
English (en)
French (fr)
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EP3768906A1 (de
Inventor
Werner Grosse
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
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Individual
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Publication of EP3768906A1 publication Critical patent/EP3768906A1/de
Application granted granted Critical
Publication of EP3768906B1 publication Critical patent/EP3768906B1/de
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Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B2/00—Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls
    • E04B2/02—Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls built-up from layers of building elements
    • E04B2/04—Walls having neither cavities between, nor in, the solid elements
    • E04B2/06—Walls having neither cavities between, nor in, the solid elements using elements having specially-designed means for stabilising the position
    • E04B2/08—Walls having neither cavities between, nor in, the solid elements using elements having specially-designed means for stabilising the position by interlocking of projections or inserts with indentations, e.g. of tongues, grooves, dovetails
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B2/00—Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls
    • E04B2/02—Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls built-up from layers of building elements
    • E04B2/28—Walls having cavities between, but not in, the elements; Walls of elements each consisting of two or more parts kept in distance by means of spacers, all parts being solid
    • E04B2/30—Walls having cavities between, but not in, the elements; Walls of elements each consisting of two or more parts kept in distance by means of spacers, all parts being solid using elements having specially designed means for stabilising the position; Spacers for cavity walls
    • E04B2/32—Walls having cavities between, but not in, the elements; Walls of elements each consisting of two or more parts kept in distance by means of spacers, all parts being solid using elements having specially designed means for stabilising the position; Spacers for cavity walls by interlocking of projections or inserts with indentations, e.g. of tongues, grooves, dovetails
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B2/00—Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls
    • E04B2/02—Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls built-up from layers of building elements
    • E04B2/04—Walls having neither cavities between, nor in, the solid elements
    • E04B2/12—Walls having neither cavities between, nor in, the solid elements using elements having a general shape differing from that of a parallelepiped
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B5/00—Floors; Floor construction with regard to insulation; Connections specially adapted therefor
    • E04B5/02—Load-carrying floor structures formed substantially of prefabricated units
    • E04B5/08—Load-carrying floor structures formed substantially of prefabricated units assembled of block-shaped elements, e.g. hollow stones
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B7/00—Roofs; Roof construction with regard to insulation
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B9/00—Ceilings; Construction of ceilings, e.g. false ceilings; Ceiling construction with regard to insulation
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C1/00—Building elements of block or other shape for the construction of parts of buildings
    • E04C1/39—Building elements of block or other shape for the construction of parts of buildings characterised by special adaptations, e.g. serving for locating conduits, for forming soffits, cornices, or shelves, for fixing wall-plates or door-frames, for claustra
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B2/00—Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls
    • E04B2/02—Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls built-up from layers of building elements
    • E04B2002/0202—Details of connections
    • E04B2002/0204—Non-undercut connections, e.g. tongue and groove connections
    • E04B2002/0206—Non-undercut connections, e.g. tongue and groove connections of rectangular shape
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B2/00—Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls
    • E04B2/02—Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls built-up from layers of building elements
    • E04B2002/0202—Details of connections
    • E04B2002/0204—Non-undercut connections, e.g. tongue and groove connections
    • E04B2002/0215—Non-undercut connections, e.g. tongue and groove connections with separate protrusions
    • E04B2002/0217—Non-undercut connections, e.g. tongue and groove connections with separate protrusions of prismatic shape
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B2/00—Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls
    • E04B2/02—Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls built-up from layers of building elements
    • E04B2002/0202—Details of connections
    • E04B2002/0243—Separate connectors or inserts, e.g. pegs, pins or keys
    • E04B2002/0245—Pegs or pins

Definitions

  • the present invention relates to a wooden building block.
  • the invention also relates to a wall system with at least five such interconnected wooden building blocks.
  • wood is ecologically CO 2 neutral and, compared to concrete, for example, for which limestone must first be mined, ground and burned, saves energy and resources and is also cost-effective.
  • Another advantage of wooden constructions is that they are relatively easy to recycle.
  • DE 10 2015 122919 discloses a wooden building block comprising interconnected longitudinal and transverse timbers.
  • a disadvantage of the wooden constructions previously known from the prior art is their low flexibility, insofar as wood is used for prefabricated houses, for example. In this case, subsequent changes to the plan cannot be implemented, or only with great difficulty.
  • attention must always be paid to the grain of the wood since, for example, the tendency of wood to shrink orthogonally to the grain is significantly greater than parallel to the grain, which often leads to cracks in conventional wooden constructions.
  • wood also has anisotropic compressive and tensile properties and wear resistance that depends on the fiber flow. A high level of wear resistance is therefore achieved, for example, with end grain wood floors in which the individual wood fibers are arranged orthogonally to the load-bearing surface.
  • the present invention deals with the problem of avoiding the disadvantages of wooden structures known from the prior art.
  • the present invention is based on the general idea of specifying a wooden building block that is not only made entirely of wood, but can also be connected to other wooden building blocks in the manner of a Lego brick in a comparatively simple manner and also has almost isotropic properties in terms of strength. Walls, pillars, girders, floors, supports, roofs and/or ceilings can then be built from such wooden building blocks in an extremely flexible manner, which means that subsequent changes to the plan can also be implemented comparatively easily.
  • the wooden building block according to the invention has four longitudinal pieces of wood with a square cross section, each with a width B 1 and a minimum length L 1 of 6B 1 , which are arranged parallel and spaced apart from one another in such a way that they span a square with a width B 2 of 3B 1 at the front . There is thus a parallel distance between two longitudinal timbers lying on one side of this square, which in turn corresponds to the width B 1 .
  • the wooden building block also has at least six cross-section square cross-pieces with a width B 1 and a length L 2 of 3B 1 .
  • at least two dowels with a square cross section and a width B 1 and a length L 3 of 2B 1 are provided.
  • both the longitudinal timbers and the transverse timbers and the dowels can be made from a common squared timber.
  • at least four crossbars are arranged upright and at least two crossbars are arranged horizontally, with the crossbars over the length L 1 of the longitudinal bars between them as follows are arranged standing, lying, standing, standing, lying and standing. This would therefore apply to a wooden building block with an exact length L 1 of 6B 1 .
  • longer wooden building blocks can also be produced without any problems, as long as longer lengthwise wood and more crosswise wood or dowels are used.
  • the at least two dowels are arranged standing parallel to each other and to the vertical crossbars on the at least two horizontal crossbars and protrude from a side surface of the wooden block, similar to a Lego block, with the two dowels opposite, i.e. on the opposite side of the at least two horizontal ones Crossbars, recesses are provided, in which two dowels of another wooden building block can be accommodated.
  • the wooden building block according to the invention can be put together in a similar way to Lego building blocks to form pillar, wall and ceiling constructions.
  • the individual longitudinal beams, transverse beams and dowels of the wooden building block are connected to one another exclusively via connecting dowels made of wood, so that no further fasteners such as screws, nails or glue are required.
  • the wooden building block according to the invention is therefore not a hybrid building block, but a building block made exclusively of wood.
  • Another great advantage of the wooden building block according to the invention is that it can not only be made from standard squared timber, but also overcomes the inherently anisotropic properties of wood, since the grain of the longitudinal timber is transverse to the grain of the transverse timber and the dowel and the standing transverse timber as well as the dowels are aligned transversely to the grain of the lengthwise and crosswise timbers.
  • direction-dependent properties such as a tendency to shrink, tensile strength and compressive strength, can be designed to be the same in all directions.
  • the dowel connection between the individual lengthwise timbers, transverse timbers and dowels can also achieve a firm connection of these individual components and thereby achieve the isotropic, i.e non-directional properties are supported. It is also of particular advantage that the wooden building block according to the invention can be designed in different lengths, ie with a different number of crosspieces and dowels, so that, for example, lintels with correspondingly long wooden pieces can be represented without any problems. With the simple, Lego-like connection of the individual wooden building blocks, it is also possible to implement subsequent changes to the plan comparatively easily, since the individual wooden building blocks then only have to be arranged differently.
  • the assembly of a wall construction from the individual wooden building blocks is also comparatively simple, since only a rubber mallet, for example, is required for connection. Additional tools are not required.
  • rigid corners can also be realized by simple plug connections.
  • the production of the bores for the connecting dowels can be designed in a fully automated manner according to a predefined grid which is based on the width B 1 .
  • the bores for the individual connecting dowels penetrate the respective longitudinal wood, the respective transverse wood and the dowels orthogonally and intersect, whereby a continuous dowel connection with correspondingly long connecting dowels of, for example, two parallel longitudinal woods via a transverse wood arranged in between or a dowel arranged in between is possible .
  • Transporting the wooden blocks to the construction site is also much easier compared to wall elements made of wood, since the wooden blocks can simply be delivered to the construction site on pallets and installed there according to the plans. Special trucks and powerful cranes are not required, which significantly simplifies construction.
  • two filler pieces with a square cross-section and a width B 1 and a length L 3 of 2B 1 are provided, which are arranged parallel to the longitudinal timbers between two adjacent transverse timbers.
  • Such filler pieces can be used to create a completely flat wall surface, which can later be covered with insulation, for example, or with plasterboard in the interior design.
  • the minimum length L 1 is approximately 48 cm or a multiple thereof.
  • a length L 1 of 48 cm a hollow building block according to the invention with four longitudinal timbers, six transverse timbers and two dowels can thus be created.
  • a length L 1 of 96 cm or even longer is also conceivable, so that a door lintel, for example, but also ceiling constructions, support constructions, floors or roofs with a corresponding span width can be realized without any problems with such a wooden building block.
  • the wooden building block has four longitudinal pieces of wood with a square cross-section, each with a width B 1 and a length L 0 of 3B 1 , which are arranged parallel and spaced apart from one another in such a way that they form a square with a width B 2 of 3B 1 open.
  • Two of the crossbars are arranged vertically and one crossbar is arranged horizontally, the crossbars being arranged between them over the length L 0 of the longitudinal bars as follows: standing, lying, standing.
  • the single dowel is arranged upright and parallel to the vertical crossbars on the horizontal crossbar and protrudes from a side surface of the wooden block, with a recess arranged between the two longitudinal bars being provided on the opposite side of the horizontal crossbar to accommodate an adjacent dowel.
  • the lengthwise timbers, the transverse timbers and the dowels are connected to one another via connecting dowels made of wood.
  • the width B 1 of the squared timber to be used for the wooden building block is expediently about 8 cm. 8 cm squared timbers are commercially available and inexpensive to produce, especially if they are made from softwood or small wood, for example.
  • the at least one dowel is rounded off at its end protruding from the side surface of the wooden building block or has chamfers.
  • a rounding makes it easier to assemble a wall or ceiling construction from such wooden building blocks.
  • the dowel can also only have corresponding chamfers on its end protruding from the side surface, which also allow the wooden building blocks to be plugged together more easily.
  • the connecting dowels are made of hardwood.
  • a particularly strong and durable connection of the components of the wooden block, that is, the lengthwise timbers, the transverse timbers and the dowels can be achieved, with the formation of the connecting dowel made of hardwood also the offers the great advantage that, due to their greater strength, they can be driven more easily into the associated holes on the lengthwise beams, the cross beams and the dowels.
  • Such a connecting dowel can, for example, have a diameter of 16 mm, the diameter of the connecting dowel to be used obviously being dependent on the width B 1 of the squared timber used for the lengthwise timbers, the transverse timbers and the dowels.
  • a wooden building block 1 according to the invention has four longitudinal pieces of wood 2 with a square cross section and a width B 1 , which are arranged parallel and spaced apart from one another in such a way that they span a square with a width B 2 of 3B 1 at the front.
  • Wood block 1 shown has two dowels 4 with a square cross section and a width B 1 and a length L 3 of 2B 1 .
  • Four of the crossbars 3 are arranged upright and denoted by the reference numeral 3a, while two crossbars 3 are lying are arranged and provided with the reference numeral 3b.
  • the crossbars 3, 3a and 3b are arranged over the length L 1 of the longitudinal bars 2 between them as follows: standing, lying, standing, standing, lying and standing.
  • the two dowels 4 are arranged upright and parallel to each other and parallel to the upright crossbars 3a on the at least two horizontal crossbars 3b and protrude from a side surface of the wooden building block 1 .
  • a recess 5 for receiving a dowel 4 of an adjacent wooden building block 1 is arranged in the region of the opposite dowel 4 .
  • the longitudinal members 2, the transverse members 3, 3a, 3b and the dowels 4 are pinned together via connecting dowels 6 and are thereby held firmly together. Other fasteners such as screws, nails or glue are not used.
  • the wooden building block 1 has four longitudinal timbers 2 with a square cross section, each with a width B 1 and a length L 0 of 3B 1 , the longitudinal timbers 2 being arranged parallel and spaced apart from one another in such a way that they also form a square with a width B 2 of 3B 1 open.
  • the length L 0 of the longitudinal bars 2 corresponds to the length L 2 of the transverse bars 3 and the width B 2 of the spanned frontal or lateral square.
  • Two crossbars 3a are arranged upright, while a crossbar 3b is arranged horizontally.
  • the crossbars 3, 3a, 3b are arranged over the length L 0 of the longitudinal bars 2 between them as follows: standing, lying, standing.
  • the dowel 4 in turn, is arranged upright and parallel to the standing crossbars 3a on the lying crossbar 3b and protrudes from a side surface of the wooden building block 1, with the longitudinal woods 2, the crossbars 3a, 3b, 3 and the dowel 4 also protruding in this case Connecting dowels 6 made of wood are connected to each other.
  • 6 holes 7 are introduced into the longitudinal beams 2, the transverse beams 3 and the dowels 4, with a predetermined grid spacing, which usually corresponds to the width B1 .
  • the width B 1 can be 8 cm, for example, whereby the wooden building block 1 according to the invention, regardless of its size, always applies that this is due to the dowels 4 arranged orthogonally to the horizontal crossbeams 3b and the longitudinal timbers 2 and the vertical transverse timbers arranged orthogonally to the longitudinal timbers 2 3a has isotropic properties, that is, direction-independent properties, in particular with regard to shrinkage and compressive and tensile strength. This is of immense advantage in particular in the case of wooden building blocks 1, since these have a greater tendency to shrink transversely to a wood fiber direction and a significantly lower tensile strength than along the respective wood fiber direction.
  • the connecting dowels 6 are usually made of hardwood, so that a particularly strong connection of the individual components, ie the lengthwise timbers 2, the transverse timbers 3 and the dowels 4, can be achieved.
  • the longitudinal beams 2, the cross beams 3, 3a and 3b and/or the dowels 4 as well as filler pieces 10 with a square cross section can be made of coniferous wood or small wood and can therefore be produced inexpensively.
  • the holes 7 to be provided for the connecting dowels 6 are introduced crosswise, that is to say crossing one another, in the previously defined grid spacing in the lengthwise timbers 2, the transversal timbers 3 and the dowels 4 or the filler pieces 10. This can be done with automated drilling operations. By using small wood or softwood for the squared timber for the longitudinal beams 2, the crossbeams 3 and the dowels 4 or the filler pieces 10, these can be produced particularly inexpensively.
  • Wall systems 11 and ceiling systems 12 made from individual wooden building blocks 1 are shown, with wooden building blocks 1 having a greater length L 1 being used in particular for the ceiling systems 12 in order to be able to achieve a larger span.
  • the wooden building blocks 1, which are longer in terms of their length L 1 can also be used as lintels without any problems.
  • the side surfaces of the wooden building block 1 can be made flat using the filler pieces 10 .
  • carrier systems, pillar systems, floors, supports or roof systems can also be manufactured.
  • wooden building blocks 1 according to the invention With the wooden building blocks 1 according to the invention, a comparatively simple, resource-saving and ecological construction can also be achieved over several floors, with only a hammer or rubber mallet being required for assembly. Due to the omission of conventional connecting means, such as screws, glue or nails, improved recyclability of the wooden building blocks 1 according to the invention can also be achieved. Another advantage of wooden building blocks is their non-destructive recyclability, which means they can be reused for new constructions. An extremely high degree of flexibility should also be particularly emphasized, so that subsequent plan changes can be made comparatively easily and flexibly with the wooden building block 1 according to the invention, which was previously not possible with prefabricated components prefabricated in halls.
  • the orthogonal arrangement of the longitudinal timbers 2, the transverse timbers 3a, 3b and the dowels 4 makes it possible in particular to achieve isotropic shrinkage properties as well as tensile and compressive strengths, which was previously not possible with timbers processed unidirectionally. Delivery of the wooden building blocks 1 to a construction site is also conceivable without a larger crane truck, that is to say simply in the form of pallets.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Rod-Shaped Construction Members (AREA)
  • Joining Of Building Structures In Genera (AREA)
EP19716284.5A 2018-03-19 2019-03-15 Holzbaustein Active EP3768906B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102018204154.7A DE102018204154B3 (de) 2018-03-19 2018-03-19 Holzbaustein
PCT/DE2019/100237 WO2019179563A1 (de) 2018-03-19 2019-03-15 Holzbaustein

Publications (2)

Publication Number Publication Date
EP3768906A1 EP3768906A1 (de) 2021-01-27
EP3768906B1 true EP3768906B1 (de) 2022-04-27

Family

ID=66101769

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19716284.5A Active EP3768906B1 (de) 2018-03-19 2019-03-15 Holzbaustein

Country Status (9)

Country Link
US (1) US11578484B2 (es)
EP (1) EP3768906B1 (es)
CA (1) CA3094296A1 (es)
DE (1) DE102018204154B3 (es)
DK (1) DK3768906T3 (es)
ES (1) ES2922535T3 (es)
LT (1) LT3768906T (es)
PL (1) PL3768906T3 (es)
WO (1) WO2019179563A1 (es)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202021100849U1 (de) 2021-02-19 2022-05-27 Nico Herrmann Holzbaustein
CN115839148B (zh) * 2023-02-24 2023-06-16 江苏殷巧建设有限公司 一种防渗的组合式仿古建筑砖木
DE102024105131A1 (de) * 2024-02-23 2025-08-28 Wegrow Germany Gmbh Verbindungsdübel, Holzbaumodul und Wandmodul

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR992912A (fr) 1944-09-29 1951-10-24 Mode de construction d'ossatures ou de charpentes de toutes sortes et éléments d'assemblage permettant cette construction
US3672681A (en) * 1970-05-01 1972-06-27 David Wolf Game method involving competitive arranging of grouped pieces into polyhedric form
CA1178775A (en) * 1982-09-28 1984-12-04 Luc Trudeau Dismantable joint arrangement
US4534563A (en) * 1983-10-06 1985-08-13 Guenther Geoffrey L Three dimensional puzzle
AUPM596394A0 (en) * 1994-05-31 1994-06-23 Dyksterhuis, Francis Henry Games and puzzles
US5823533A (en) * 1997-03-21 1998-10-20 Edwards; Boyd F. Puzzles in two and three dimensions
US5928052A (en) * 1998-05-14 1999-07-27 Buscher; William C. Cube toy blocks
CA2371339A1 (en) * 2002-02-11 2003-08-11 Michael Porter Three dimensional puzzle
TWI542395B (zh) * 2014-10-31 2016-07-21 國立臺灣科技大學 積木單體
DE102015122919A1 (de) * 2015-12-29 2017-06-29 Thomas Damm Holzmauerstein

Also Published As

Publication number Publication date
ES2922535T3 (es) 2022-09-16
DE102018204154B3 (de) 2019-08-08
WO2019179563A1 (de) 2019-09-26
DK3768906T3 (en) 2022-07-25
US20210002891A1 (en) 2021-01-07
LT3768906T (lt) 2022-08-10
US11578484B2 (en) 2023-02-14
PL3768906T3 (pl) 2022-09-19
CA3094296A1 (en) 2019-09-26
EP3768906A1 (de) 2021-01-27

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