Hard panels formed from a wood-based material and having a decorative layer for floor coverings are provided, at least on two opposite edges, with coupling devices made in one piece with the panels wherein similar panels may be coupled together to form a floor covering, wherein these coupling device
Hard panels formed from a wood-based material and having a decorative layer for floor coverings are provided, at least on two opposite edges, with coupling devices made in one piece with the panels wherein similar panels may be coupled together to form a floor covering, wherein these coupling devices provide for an interlocking in a direction perpendicular to the plane of coupled panels, as well as in a direction perpendicular to the edges concerned and parallel to the plane of coupled panels. These coupling devices are constituted of a tongue and a groove. The top side of the tongue has a protrusion that cooperates with a meshing recess located in the lower side of the upper lip of the groove of the coupling devices, and a portion extending generally parallel with the plane of the panel to form a contact surface cooperating with the lower side of the upper lip of the groove.
대표청구항▼
1. A floor panel, for forming a floor covering: wherein the floor panel is provided with coupling means on at least two opposite edges, as a result of which several of such floor panels can be mutually coupled to one another, whereby said coupling means provide for an interlocking in a vertical dire
1. A floor panel, for forming a floor covering: wherein the floor panel is provided with coupling means on at least two opposite edges, as a result of which several of such floor panels can be mutually coupled to one another, whereby said coupling means provide for an interlocking in a vertical direction perpendicular to a plane including the floor panel, as well as in a horizontal direction perpendicular to the edges concerned and parallel to the plane of the floor panel;wherein said coupling means at least comprise coupling parts formed of a first contact surface working in conjunction with a second contact surface of a similar adjacent floor panel coupled thereto, wherein the interlocking in vertical direction is at least provided by said cooperating contact surfaces;wherein said coupling means are configured such that a bottom side of a similar adjacent floor panel, starting from a generally co-planar position with said similar adjacent floor panel coupled to the floor panel, can be turned towards a bottom side of said floor panel over at least a certain angle; andwherein said turning movement enables to reach a position in which at least the vertical interlocking provided by said cooperating contact surfaces is interrupted. 2. The floor panel of claim 1, wherein said first contact surface is located on an upward facing side of a male protrusion of the floor panel, working in conjunction with said second contact surface located on an opposite part of a similar adjacent floor panel coupled thereto. 3. The floor panel of claim 1, wherein said coupling means are configured to enable the floor panel to be lifted from a flat generally co-planar position with a similar adjacent floor panel coupled thereto, such that at least the vertical interlocking provided by said cooperating contact surfaces is interrupted. 4. The floor panel of claim 1, wherein the floor panel comprises a lower lip containing a first interlocking part which works in conjunction with an opposite second interlocking part of a similar adjacent floor panel coupled thereto, and wherein, in coupled condition of the floor panel with said similar adjacent floor panel, spaces are provided above said first interlocking part as well as under said second interlocking part. 5. The floor panel of claim 4, wherein said space below the second interlocking part is closed in coupled condition of the floor panel with the similar adjacent floor panel. 6. The floor panel of claim 1, wherein the floor panel is substantially made of synthetic material. 7. The floor panel of claim 1, wherein said coupling means are made in one piece with the floor panel. 8. A floor panel, for forming a floor covering: wherein said floor panel comprises two pairs of opposite edges, consisting of a first pair of opposite edges and a second pair of opposite edges;wherein said first and second pair of opposite edges respectively comprise first and second coupling means, as a result of which several of such floor panels can be mutually coupled to one another, whereby said first and second coupling means provide for an interlocking in a vertical direction perpendicular to a plane including the floor panel, as well as in a horizontal direction perpendicular to the edges concerned and parallel to the plane of the floor panel;wherein said first coupling means comprise a tongue and a groove, and are configured such that they allow the floor panel to be coupled to similar adjacent floor panels along the first pair of opposite side edges by means of a movement of rotation;wherein said second coupling means at least comprise coupling parts formed of a first contact surface working in conjunction with a second contact surface of a similar adjacent floor panel coupled thereto, wherein the interlocking in vertical direction along said second pair of opposite edges is at least provided by said cooperating contact surfaces;wherein said second coupling means are configured such that a bottom side of a similar adjacent floor panel, starting from a generally co-planar position with said similar adjacent floor panel coupled to the floor panel, can be turned towards a bottom side of said floor panel over at least a certain angle; andwherein said turning movement enables to reach a position in which at least the vertical interlocking provided by said cooperating contact surfaces is interrupted. 9. The floor panel of claim 8, wherein said first contact surface is located on an upward facing side of a male protrusion of the floor panel, working in conjunction with said second contact surface located on an opposite part of a similar adjacent floor panel coupled thereto. 10. The floor panel of claim 8, wherein said second coupling means are configured to enable the floor panel to be lifted from a flat generally co-planar position with a similar adjacent floor panel coupled thereto, such that at least the vertical interlocking provided by said cooperating contact surfaces is interrupted. 11. The floor panel of claim 8, wherein said second coupling means comprise a lower lip containing a first interlocking part which works in conjunction with an opposite second interlocking part of a similar adjacent floor panel coupled thereto, and wherein, in coupled condition of the floor panel with said similar adjacent floor panel, spaces are provided above said first interlocking part as well as under said second interlocking part. 12. The floor panel of claim 11, wherein said space below the second interlocking part is closed in coupled condition of the floor panel with the similar adjacent floor panel. 13. The floor panel of claim 8, wherein the floor panel is rectangular and has a longitudinal form, such that the floor panel has long edges and short edges; wherein the first pair of opposite edges forms the long edges; and wherein the second pair of opposite edges forms the short edges. 14. The floor panel of claim 8, wherein the floor panel is substantially made of synthetic material. 15. The floor panel of claim 8, wherein said first and second coupling means are made in one piece with the floor panel. 16. A floor panel, for forming a floor covering: wherein the floor panel is provided with coupling means on at least two opposite edges, as a result of which several of such floor panels can be mutually coupled to one another, whereby said coupling means provide for an interlocking in a vertical direction perpendicular to a plane including the floor panel, as well as in a horizontal direction perpendicular to the edges concerned and parallel to the plane of the floor panel;wherein said coupling means at least comprise coupling parts formed of a first contact surface working in conjunction with a second contact surface of a similar adjacent floor panel coupled thereto, wherein the interlocking in vertical direction is at least provided by said cooperating contact surfaces;wherein said coupling means are configured such that a bottom side of a similar adjacent floor panel, starting from a generally co-planar position with said similar adjacent floor panel coupled to the floor panel, can be turned towards a bottom side of said floor panel over at least a certain angle; andwherein said turning movement enables to reach a dislocation between the first and second contact surfaces, such that the first contact surface is moved past an edge of the second contact surface. 17. The floor panel of claim 16, wherein said first contact surface is located on an upward facing side of a male protrusion of the floor panel, working in conjunction with said second contact surface located on an opposite part of a similar adjacent floor panel coupled thereto. 18. The floor panel of claim 17, wherein said male protrusion of the floor panel comprises a downward facing support surface which, in coupled condition of the floor panel with an adjacent similar floor panel, lies against an upward facing support surface of the lower lip of the similar adjacent floor panel, and wherein said turning movement causes the downward facing support surface to lift from the upward facing support surface. 19. The floor panel of claim 16, wherein said coupling means are configured to enable the floor panel to be lifted from a flat generally co-planar position with a similar adjacent floor panel coupled thereto, such that said dislocation is reached. 20. The floor panel of claim 16, wherein the floor panel is substantially made of synthetic material. 21. The floor panel of claim 16, wherein said coupling means are made in one piece with the floor panel. 22. A floor panel, for forming a floor covering: wherein the floor panel is provided with coupling means on at least two opposite edges, as a result of which several of such floor panels can be mutually coupled to one another, whereby said coupling means provide for an interlocking in a vertical direction perpendicular to a plane including the floor panel, as well as in a horizontal direction perpendicular to the edges concerned and parallel to the plane of the floor panel;wherein said coupling means comprise a male protrusion and a female recess which is bordered at the bottom by a lower lip which extends further than the distal end of a top side of the floor panel in the horizontal direction away from the female recess;wherein said male protrusion is connected to the floor panel via a zone in the shape of a local constriction or reduced cross-section;wherein said coupling means comprise coupling parts formed of a first contact surface on an upward facing side of the male protrusion, working in conjunction with a second contact surface of an opposite part of a similar adjacent floor panel coupled thereto, such that the interlocking in vertical direction is at least provided by said cooperating contact surfaces;wherein said coupling means are configured such that a bottom side of a similar adjacent floor panel, starting from a generally co-planar position with said similar adjacent floor panel coupled to the floor panel, can be turned towards a bottom side of said floor panel over at least a certain angle. 23. The floor panel of claim 22, wherein the lower lip comprises a first interlocking part with an inwardly directed contact surface which can cooperate with an opposite contact surface of a second interlocking part of an adjacent similar floor panel coupled thereto; and wherein said zone is situated past the opposite contact surface seen as of the male protrusion. 24. The floor panel of claim 23, wherein, in coupled condition of the floor panel with said similar adjacent floor panel, spaces are provided above said first interlocking part as well as under said second interlocking part. 25. The floor panel of claim 24, wherein said space below the second interlocking part is closed in coupled condition of the floor panel with the similar adjacent floor panel. 26. The floor panel of claim 22, wherein said zone has a thickness, according to the vertical direction, which is smaller than half the thickness of the floor panel. 27. The floor panel of claim 22, wherein said thickness of the zone is smaller than 3 mm, and better still smaller than 2 mm. 28. The floor panel of claim 22, wherein said male protrusion of the floor panel comprises a downward facing support surface which, in coupled condition of the floor panel with an adjacent similar floor panel, lies against an upward facing support surface of the lower lip of the similar adjacent floor panel, and wherein said turning movement causes the downward facing support surface to lift from the upward facing support surface. 29. The floor panel of claim 22, wherein the floor panel is substantially made of synthetic material. 30. The floor panel of claim 22, wherein said coupling means are made in one piece with the floor panel.
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