Source: http://www.google.com/patents/US6490836?dq=6289460
Timestamp: 2014-07-31 11:33:20
Document Index: 111867083

Matched Legal Cases: ['Application No. 713', 'Application No. 00201515', 'application No. 00201515', 'application No. 00201515', 'application No. 00201515', 'application No. 00201515', 'Application No. 713', 'Application No. 713']

Patent US6490836 - Floor panel with edge connectors - Google PatentsSearch Images Maps Play YouTube News Gmail Drive More »Sign in<nobr>Advanced Patent Search</nobr>PatentsFloor covering, including hard floor panels (1) which, at least at the edges of two opposite sides (2-3, 26-27), are provided with coupling parts (4-5, 28-29), cooperating which each other, substantially in the form of a tongue (9-31) and a groove (10-32), wherein the coupling parts (4-5, 28-29) are...http://www.google.com/patents/US6490836?utm_source=gb-gplus-sharePatent US6490836 - Floor panel with edge connectorsAdvanced Patent SearchPublication numberUS6490836 B1Publication typeGrantApplication numberUS 09/471,014Publication dateDec 10, 2002Filing dateDec 23, 1999Priority dateJun 11, 1996Fee statusPaidAlso published asCA2226286A1, CA2226286C, CA2475076A1, CA2475076C, CA2521949A1, CA2521949C, CA2522085A1, CA2522085C, CA2522092A1, CA2522092C, CA2522130A1, CA2522130C, CA2522141A1, CA2522141C, CA2522321A1, CA2522321C, CA2559357A1, CA2559357C, CA2560527A1, CA2560527C, CA2569612A1, CA2569612C, CA2569614A1, CA2569614C, CA2693267A1, CA2693267C, CA2701554A1, CA2701554C, CA2735317A1, CA2735317C, CA2783398A1, CA2783398C, CN1087056C, CN1195141C, CN1195386A, CN1399051A, CN1572993A, CN1880702A, CN1880702B, CN1880703A, CN1891951A, CN1928294A, CN1928294B, CN1928295A, CN1928296A, CN1928297A, CN1932203A, CN1932204A, CN1932204B, CN1932205A, CN1932206A, CN1932207A, CN1932208A, CN1932209A, CN1932210A, CN1982638A, CN100406666C, CN100453759C, CN100491668C, CN100491669C, CN100526578C, CN100526579C, CN100529299C, CN100540820C, CN100543253C, CN100580204C, CN101016797A, CN101078293A, CN101078294A, CN102051973A, CN102051973B, DE1024234T1, DE1026341T1, DE02076363T1, DE05075560T1, DE05075635T1, DE05076551T1, DE05077262T1, DE05077327T1, DE05077348T1, DE07024053T1, DE08020631T1, DE29710175U1, DE29724428U1, DE29724742U1, DE29724868U1, DE29724876U1, DE29724883U1, DE69703230D1, DE69703230T2, DE69703230T3, DE69713629D1, DE69713629T2, DE69713629T3, DE69724013D1, DE69724013T2, DE69734406D1, DE69734406T2, DE69734406T3, DE69739197D1, DE69739238D1, DE69739617D1, DE69739623D1, DE69739812D1, DE69740068D1, DE69740147D1, EP0843763A1, EP0843763B1, EP0843763B2, EP1024234A2, EP1024234A3, EP1024234B1, EP1024234B2, EP1026341A2, EP1026341A3, EP1026341B1, EP1223267A2, EP1223267A3, EP1223267B1, EP1223267B2, EP1338721A2, EP1338721A3, EP1338721B1, EP1541778A1, EP1541778B1, EP1541779A1, EP1541779B1, EP1589161A2, EP1589161A3, EP1589161B1, EP1612346A2, EP1612346A3, EP1612346B1, EP1614828A2, EP1614828A3, EP1614828B1, EP1614829A2, EP1614829A3, EP1614829B1, EP1898026A2, EP1898026A3, EP1898026B1, EP2031147A2, EP2031147A3, EP2031148A2, EP2031148A3, EP2031148B1, EP2031149A2, EP2031149A3, EP2031149B1, EP2077358A2, EP2077358A3, EP2077358B1, EP2116668A1, EP2275622A2, EP2275622A3, EP2275623A2, EP2275623A3, EP2280131A2, EP2280131A3, EP2280132A2, EP2280132A3, EP2280133A2, EP2280133A3, EP2280134A2, EP2280134A3, EP2280135A2, EP2280135A3, US6006486, US6874292, US6928779, US6955020, US6993877, US7040068, US7328536, US7467499, US7617645, US7621094, US7634886, US7634887, US7637066, US7637067, US7640708, US7644554, US7644555, US7644557, US7647741, US7647743, US7650727, US7650728, US7654054, US7658048, US7661238, US7665265, US7665266, US7665267, US7665268, US7669376, US7669377, US7673431, US7677008, US7681371, US7698868, US7698869, US7707793, US7712280, US7726089, US7735288, US7757453, US7770350, US7810297, US7827754, US7827755, US8166723, US8365494, US20030024200, US20030024201, US20030029115, US20030029116, US20030029117, US20050284075, US20050284076, US20060005499, US20060032177, US20060196138, US20060201095, US20060225370, US20060225377, US20060236630, US20060236631, US20060236632, US20060236633, US20060236634, US20060236635, US20060236636, US20060236637, US20060236638, US20060236643, US20060248829, US20060248830, US20060248831, US20060254183, US20060254184, US20060254185, US20060260249, US20060272263, US20070094986, US20070094987, US20070107360, US20070107363, US20070251188, US20080010928, US20080010929, US20080053027, US20080053028, US20080060309, US20080060310, US20080060311, US20080066416, US20100319292, US20110023405, US20130104487, WO1997047834A1Publication number09471014, 471014, US 6490836 B1, US 6490836B1, US-B1-6490836, US6490836 B1, US6490836B1InventorsStefan Simon Gustaaf Moriau, Mark Gaston Maurits Cappelle, Bernard Paul Joseph ThiersOriginal AssigneeUnilin Beheer B.V. Besloten VennootschapExport CitationBiBTeX, EndNote, RefManPatent Citations (98), Non-Patent Citations (20), Referenced by (66), Classifications (37), Legal Events (7) External Links: USPTO, USPTO Assignment, EspacenetFloor panel with edge connectorsUS 6490836 B1Abstract Floor covering, including hard floor panels (1) which, at least at the edges of two opposite sides (2-3, 26-27), are provided with coupling parts (4-5, 28-29), cooperating which each other, substantially in the form of a tongue (9-31) and a groove (10-32), wherein the coupling parts (4-5, 28-29) are provided with integrated mechanical locking elements (6) which prevent the drifting apart of two coupled floor panels in a direction (R) perpendicular to the related edges (2-3, 26-27) and parallel to the underside (7) of the coupled floor panels (1).
What is claimed is: 1. A floor covering comprising a hard floor panel having a substantially planar underside and at least two opposed side edges, said side edges including complementary coupling parts configured to cooperate with identical cooperative complementary coupling parts of another one of said panel, said coupling parts comprising substantially a tongue and a groove extending along panel side edges generally parallel to the panel underside and including integrated mechanical locking elements, said tongue, groove and locking elements formed in one piece with the panel, said tongue, groove and locking elements arranged to prevent drifting apart of the floor panel when coupled by said coupling parts to another one of said floor panel in a direction perpendicular to the adjacent side edges of the coupled panels, and parallel to the underside of the panel; a coupling part of said panel, when engaged with a complementary coupling part of another one of said panel, configured and arranged to produce a biasing force between such coupled panels tending to urge the panels towards each other; at least one of said coupling parts including an elastically bendable portion having a relaxed unbent position, and which, when in a coupled condition, is at least partially bent out of its normal relaxed position and thereby provides said biasing force;
wherein the elastically bendable portion of said one of said coupling part comprises a lower lip defined at least in part by a lower side of the groove of said coupling parts, said lower lip cooperating with a mating portion of a tongue of a cooperating coupling part; wherein said lip when bent extends in a downward direction relative to the panel underside when the panel is coupled by cooperative complementary coupling parts to another one of said panel; wherein the panel comprises a core comprising a material selected from the group consisting of HDF and MDF board; said lower lip is substantially formed of said core; one of said locking elements comprises a recess in said lower lip, said recess having a lowermost bottom area; said groove having a deepest point within the panel; and wherein said elastically bendable portion of the lower lip comprises a portion of said lower lip located between the deepest point of said groove and the lowermost bottom area of said recess; wherein the bendable portion of the lower lip includes a side wall of said recess that slopes downwardly in a direction extending from a distally outer area of said lip towards a proximally inner area of said lip. 2. A floor covering comprising a hard floor panel having a substantially planar underside and at least two opposed side edges, said side edges including complementary coupling parts configured to cooperate with identical cooperative complementary coupling parts of another one of said panel, said coupling parts comprising substantially a tongue and a groove extending along panel side edges generally parallel to the panel underside and including integrated mechanical locking elements, said tongue, groove and locking elements formed in one piece with the panel, said tongue, groove and locking elements arranged to prevent drifting apart of the floor panel when coupled by said coupling parts to another one of said floor panel in a direction perpendicular to the adjacent side edges of the coupled panels, and parallel to the underside of the panel; a coupling part of said panel, when engaged with a complementary coupling part of another one of said panel, configured and arranged to produce a biasing force between such coupled panels tending to urge the panels towards each other; at least one of said coupling parts including an elastically bendable portion having a relaxed unbent position, and which, when in a coupled condition, is at least partially bent out of its normal relaxed position and thereby provides said biasing force;
wherein said floor panel is rectangular and includes two pairs of opposed side edges; said coupling parts and locking elements are provided on all side edges of the panel; and wherein said locking elements are provided on at least two side edges that are perpendicular to and meet each other whereby, when the panel is coupled with complementary coupling parts of identical ones of said panel at all opposed edges, the panels are locked together by said locking elements at all coupled side edges; wherein said coupling parts are configured and arranged to enable coupling of complementary coupling parts of identical ones of said panel to each other by rotation of one panel relative to the other, said coupling parts configured such that upon rotation of one panel relative to the other panel the elastically bendable portion of one coupling part is bent; and wherein at coupled side edges of the coupled panels the coupling parts are configured such that one panel is movable relative to the other by shifting the one relative to the other in a direction parallel to the coupled side edges; said shifting of one panel relative to the other maintaining the bent condition of the elastically bendable portion of the lower lip while the panels are coupled. 3. A method of assembling a floor covering comprising cooperating rectangular hard floor panels each having a substantially planar underside and at least two opposed side edges including complementary coupling parts arranged to cooperate with identical complementary coupling parts of another one of said panels, said complementary coupling parts substantially comprising a tongue and a groove extending generally parallel to said underside, said coupling parts further including integrated mechanical locking elements which prevent the drifting apart of coupled ones of said panels away from each other in directions perpendicular to the respective coupled side edges and parallel to the undersides of the panels, said coupling parts defining at least in part a lower lip which defines at least a portion of a lower side of each groove of the coupling parts and an upper lip located above each groove area adjacent the upper surface of the panel; said lower lip extending distally beyond the upper lip; said locking elements including a portion of said lower lip which slopes downwardly in a direction extending from a distally outer location towards a proximally inner location, said portion located at least in part on a part of the lower lip extending beyond said upper lip, a lower side of said tongue that is inclined downwardly in a direction extending from proximal inner location of said tongue to a distally outer location thereof; said portion of said lower lip that slopes downwardly cooperating with said lower side of the tongue that is inclined, said lower lip including an elastically bendable portion that must be elastically bent downwardly to enable coupling of a complementary pair of tongue and groove coupling parts; comprising the steps of:
laying a first one of said panels on a support surface; coupling a second one of said panels to said first one panel along first and second complementary side edges of the panels by fitting a tongue of one panel into a complementary groove of the other panel until said downwardly sloping portion of said lower lip engages said downwardly inclined lower side of said tongue while bending the lower lip elastically in a downward direction; and maintaining said lower lip in a bent condition after such coupling to effectively bias the sloped and inclined portions of the lower lip and tongue together and to produce a resultant biasing force maintaining the panels compressed against each other at the coupled side edges. 4. A method according to claim 3, wherein said second panel is coupled to the first panel by first fitting the tongue and groove into each other with the second panel angled upwardly with respect to the first panel and then subsequently angling down the second panel to bring the two panels into a coplanar relationship, and causing by said angling down that the bendable portion of the lower lip of the first panel is resiliently bent downwardly over a small distance.
5. The method according to claim 3, wherein the second panel is coupled to the first panel by first fitting the tongue and groove into each other, said fitting being carried out by shifting the second panel relative to the first panel with both panels in a substantially coplanar relationship, and causing by said shifting that the bendable portion of the lower lip of the first panel is deflected downwardly over a small distance.
6. The method according to claim 3, wherein said tongue, groove, lips and locking elements are provided on coupling parts located at opposed pairs of opposite side edges, said method comprising the additional step of:
coupling a third one of said panels to the first and second ones of said panels respectively along complementary third and fourth side edges of the panels that extend perpendicular to each other; and causing by said coupling that an elastically bendable portion of a lower lip of the last recited side edges is elastically deflected in a downward direction, the return force of the deflected portion of the lip providing the resultant biasing force maintaining the panels compressed against each other along said third and fourth side edges. 7. The method according to claim 6, wherein the coupling of the panels is created by the steps of:
coupling the third panel to the first panel by first fitting a tongue of the third panel into a complementary groove of the first panel with the third panel angled upwardly with respect to the first panel, then angling down the third panel so that the first and third panels are coplanar, and causing by said angling down that the bendable portion of the lower lip of the first panel is deflected downwardly over a small distance to provide a resilient biasing force urging said first and third panels together; coupling the third panel to the second panel by first partially fitting a tongue of the third panel into a complementary groove of the second panel and then shifting the third panel toward the second panel with the second and third panels in a coplanar relationship to fully couple the respective tongue and groove of the third and second panels; said third and second panels being thereby located in a coplanar condition with the bendable portion of the lower lip of the second panel remaining in a downwardly deflected condition to provide a resilient biasing force urging the third and second panels together. 8. The method according to claim 6, wherein the coupling of the panels is created by the steps of:
coupling the third panel to the first panel by first fully coupling together a tongue and groove of the third and first panels by shifting the third panel relative to first panel with both panels in a coplanar relationship, said shifting causing a bendable portion of the lower lip of the first panel to become and remain deflected downwardly over a small distance while the panels are coupled; and coupling the third panel to the second panel by coupling the tongue and groove of the respective third and second panels, said coupling being carried out by shifting the third panel relative to the second panel with the panels in a substantially coplanar relationship; causing the bendable portion of the lower lip of the second panel to become and remain deflected downwardly over a small distance while the third and second panels are coupled. 9. The method according to claim 3, including the step of laying all the panels over a flexible underlay, said flexible underlay accommodating the downwardly bent portions of the panel lips with the upper surfaces of the panels lying in a common plane.
10. A floor covering comprising
a laminated hard floor panel having a wood-based core material selected from the group consisting of High Density Fibreboard (HDF) and Medium Density Fibreboard (MDF), said panel comprising a first pair and a second pair of opposed side edges, said panel further comprising generally complementary coupling parts located at both of the pairs of said side edges, said coupling parts comprising a tongue and a groove, said tongue and groove when coupled along adjacent side edges of two ones of said panel comprising integral mechanical locking elements, said coupling parts as well as said mechanical locking elements being integral and made in one piece with said core material, said coupling parts together with said locking elements arranged so as to enable a locking in a direction perpendicular to the plane of the floor covering as well as in a direction perpendicular to the coupled side edges and parallel to a plane including the panels that are coupled, wherein said coupling parts and the mechanical locking elements of at least said second pair of opposite side edges are configured such that two identical ones of said floor panel are coupled by shifting them laterally towards each other in a substantial planar fashion, and wherein the locking elements of said second pair of opposite side edges provide a snap-together coupling providing a snap-action during the coupling of two panels by shifting them laterally towards each other, said snap action being delivered substantially by said core material; wherein said locking elements comprise a recess located in a lower lip extending at least to a side edge and defining at least in part a lower side of said groove; and a protrusion provided at a lower side of said tongue; wherein the-panels at the side edge comprising the groove, of at least one of the side edge of both pairs of the side edges, include an upper lip above the groove, said upper lip defining at least in part an upper side of said groove, and said upper lip terminating at a distal outer end, wherein said lower lip extends distally beyond the distal outer end of the upper lip, and further wherein the recess is located in the lower lip in an area of the lower lip that is located at least partly beyond the distal outer end of the upper lip. 11. The floor covering according to claim 10, wherein the configuration of the tongue and the lower lip are such that a tongue of said panel becomes automatically lodged in the groove of another identical one of said panels by laterally moving the panels towards each other in approximately a plane including the panels during which the tongue is partially inserted into the groove before the lower lip is deformed.
12. The floor covering according to claim 11, wherein said panel becomes automatically lodged in the groove of another identical one of said panels by laterally moving the panels towards each other in approximately a plane including the panels starting from positions at which the panels are completely separated from each other.
13. The floor covering according to claim 10, wherein the first pair of side edges as well as the second pair of the side edges comprise coupling parts and locking elements including a lower lip extending beyond the upper lip.
14. The floor covering according to claim 10, wherein one pair of the side edges comprises coupling parts in the form of a tongue and a groove and wherein the locking elements of this pair of side edges are located completely inside the groove.
15. The floor covering according to claim 14, wherein the groove is formed by upper and lower lips, the upper lip and the lower lip bordering the groove are of equal length.
16. The floor covering according to claim 15, wherein said floor panels are elongated and the side edges having the upper lip and the lower lip of equal length is located at one of the short sides of the panels.
17. The floor covering according to claim 10, wherein the lower lip extends beyond the upper lip over a distance which is smaller than the thickness of the panel.
18. The floor covering according to claim 10, wherein at at least one pair of the edges, the locking elements comprise inclined contact surfaces.
19. The floor covering according to claim 18, wherein the contact surfaces define a tangent line which in respect to the plane of the floor covering shows an inclination which is comprised between 30� and 70�.
20. The floor covering according to claim 11, wherein the locking elements comprise at least one contact surface which is perpendicular to the plane of the panels.
21. The floor covering according to claim 14, wherein one pair of the side edges comprises coupling parts in the form of a tongue and a groove and wherein the locking elements of this pair of side edges are located completely inside the groove; and wherein the locking elements comprise at least one contact surface which is perpendicular to the plane of the panels.
22. The floor covering according to claim 10, wherein said lower lip comprises an increasing thickness from the recess towards the innermost point of said groove.
23. A floor covering comprising
a laminated hard floor panel having a wood-based core material selected from the group consisting of High Density Fibreboard (HDF) and Medium Density Fibreboard (MDF), said panel comprising a first pair and a second pair of opposed side edges, said panel further comprising generally complementary coupling parts located at both of the pairs of said side edges, said coupling parts comprising a tongue and a groove, said tongue and groove when coupled along adjacent side edges of two ones of said panel comprising integral mechanical locking elements, said coupling parts as well as said mechanical locking elements being integral and made in one piece with said core material, said coupling parts together with said locking elements arranged so as to enable a locking in a direction perpendicular to the plane of the floor covering as well as in a direction perpendicular to the coupled side edges and parallel to a plane including the panels that are coupled, wherein said coupling parts and the mechanical locking elements of at least said second pair of opposite side edges are configured such that two identical ones of said floor panel are coupled by shifting them laterally towards each other in a substantial planar fashion, and wherein the locking elements of said second pair of opposite side edges provide a snap-together coupling providing a snap-action during the coupling of two panels by shifting them laterally towards each other, said snap action being delivered substantially by said core material; at least one of said pairs of edges comprising a lower lip defining at least in part a bottom side of a groove of said coupling parts and extending distally beyond a respective groove opening, and wherein said locking elements comprise a protrusion extending from the lower side of a tongue of said pairs of edges and a cooperating recess in said lower lip, said protrusion and recess fitting together when ones of said panel are coupled by said tongue and groove; wherein, when a complementary tongue and groove are coupled, said protrusion and recess meet each other at contiguous contact surfaces at a common plane of tangency that with respect to a common plane of the coupled panels is inclined inwardly from a distally outer area towards a distally inner area at an angle less than 90�. 24. The floor panel according to claim 23, wherein the angle is between 30-70�.
25. A floor covering comprising
a laminated hard floor panel having a wood-based core material selected from the group consisting of High Density Fibreboard (HDF) and Medium Density Fibreboard (MDF), said panel comprising a first pair and a second pair of opposed side edges, said panel further comprising generally complementary coupling parts located at both of the pairs of said side edges, said coupling parts comprising a tongue and a groove, said tongue and groove when coupled along adjacent side edges of two ones of said panel comprising integral mechanical locking elements, said coupling parts as well as said mechanical locking elements being integral and made in one piece with said core material, said coupling parts together with said locking elements arranged so as to enable a locking in a direction perpendicular to the plane of the floor covering as well as in a direction perpendicular to the coupled side edges and parallel to a plane including the panels that are coupled, wherein said coupling parts and the mechanical locking elements of at least said second pair of opposite side edges are configured such that two identical ones of said floor panel are coupled by shifting them laterally towards each other in a substantial planar fashion, and wherein the locking elements of said second pair of opposite side edges provide a snap-together coupling providing a snap-action during the coupling of two panels by shifting them laterally towards each other, said snap action being delivered substantially by said core material; at least one of said pairs of edges comprising a lower lip defining at least in part a bottom side of a groove of said coupling parts and extending distally beyond a respective groove opening, and wherein said locking elements comprise a protrusion extending from the lower side of a tongue of said pairs of edges and a cooperating recess in said lower lip, said protrusion and recess fitting together when ones of said panel are coupled by said tongue and groove; said panel including an upper outer edge and wherein the protrusion and recess include engageable complementary contact surfaces located on radii (R1-R2) centered within a circle which extends within a radius of 3 mm around the upper outer edge of the panel. 26. A method of assembling a floor covering comprising hard floor panels of rectangular shape, said panels each including complementary coupling parts at opposed side edges of the panels, said coupling parts arranged to cooperate with complementary coupling parts of another one of said panel, said coupling parts comprising substantially a tongue, a groove, and integrated locking elements collectively arranged to prevent the drifting apart of two coupled ones of said floor panel in a direction parallel to the edges along which the panels are coupled and parallel to a plane including the floor panels, said panels each including distally extending upper and lower lips on opposite sides of said groove, said lower lip including an elastically flexible portion and defining at least in part a lower side of the groove and extending distally beyond the upper lip, and wherein one of said locking elements comprises at least in part a portion of the elastically flexible portion of the lower lip that extends beyond the upper lip and which is inclined downwardly in a direction extending inwardly from the distal end area of said lip, said locking element cooperating with a surface of the lower side of the tongue which slopes downwardly in a direction extending outwardly from a proximal area of the tongue toward a distal area thereof, said method comprising the steps of:
laying a first one of said hard floor panel on a support surface; placing a second one of said panel next to a side edge of the first one of said panel, such that a tongue of one of said panel side edges lies next to a groove of the other one of said panel side edges; shifting the panels towards each other to move a tongue into a groove and to bend a flexible portion of a lower lip downwardly, said shifting causing the inclined and sloped surfaces of the tongue and groove respectively to engage each other in coupled relationship with the panels biased towards each other by the returning force of the downwardly bent lower lip; wherein a third panel is coupled to a previously laid one or more of said first and second ones of said panel by placing the tongue of the third panel in a complementary groove of one or more of the previously laid panels, and wherein the second one of said panel, before being coupled with the first one of said panel, is coupled to an already previously laid one or more of said panel using the steps of: directing a tongue of the third one of said panel towards a groove of an already laid panel or panels and inserting a tongue of the third one of said panel at least partially into the groove of an already laid panel or panels while the third one panel is angled upwardly relative to the already laid panel or panels; angling down the third one of said panel so that the inclined locking elements are brought adjacent each other; after such angling down of the third one of said panel, laterally moving the third one of said panel towards the previously laid one or more panels with the panels in a common plane to completely engage the tongue, groove and locking elements of the third one of said panel with a complementary tongue, groove and locking element of the previously laid panel or panels. 27. A floor covering comprising
a laminated hard floor panel having a wood-based core material selected from the group consisting of High Density Fibreboard (HDF) and Medium Density Fibreboard (MDF), said panel comprising a first pair and a second pair of opposed side edges, said panel further comprising generally complementary coupling parts located at both of the pairs of said side edges, said coupling parts comprising a tongue and a groove, said tongue and groove when coupled along adjacent side edges of two ones of said panel comprising integral mechanical locking elements, said coupling parts as well as said mechanical locking elements being integral and made in one piece with said core material, said coupling parts together with said locking elements arranged so as to enable a locking in a direction perpendicular to the plane of the floor covering as well as in a direction perpendicular to the coupled side edges and parallel to a plane including the panels that are coupled, wherein said coupling parts and the mechanical locking elements of at least said second pair of opposite side edges are configured such that two identical ones of said floor panel are coupled by shifting them laterally towards each other in a substantial planar fashion, and wherein the locking elements of said second pair of opposite side edges provide a snap-together coupling providing a snap-action during the coupling of two panels by shifting them laterally towards each other, said snap action being delivered substantially by said core material; wherein said coupling parts and locking elements of the first pair of side edges are configured and dimensioned so as to enable two identical ones of said floor panel to be coupled at the side edges at least by turning one of said floor panels relative to the other. 28. The floor covering according to claim 27, wherein said coupling parts and locking elements of the first pair of side edges are configured and dimensioned so as to enable identical ones of said floor panel to be laterally coupled at these side edges exclusively by turning one of said floor panels relative to the other.
29. The floor covering according to claim 27, wherein said floor panels are elongated and the first pair of opposed side edges is formed by the longer side edges, whereas the second pair of opposed side edges is formed by the shorter side edges.
30. The floor covering according to claim 27, wherein said coupling parts and said locking elements of both of the pairs of side edges are configured and dimensioned so as to enable identical ones of said floor panel to be laterally engaged, as well as disengaged, at their side edges by turning one of said floor panel relative to the other.
RELATED APPLICATION DATA This application is a continuation of application Ser. No. 08/872,044 filed Jun. 10, 1997 now U.S. Pat. No. 6,006,486.
In a first important preferred form of embodiment, the coupling parts are provided with locking elements which, in the engaged position of two or more ofsuch floor panels, exert a tension force upon each other which force the floor panels towards each other. As a result of this that not only the formation of gaps counteracted during installation, but also in a later stage the development of gaps, from any causes whatsoever, is counteracted.
According to a second important preferred embodiment, the aforementioned optimalization is achieved in that the floor covering panel possesses the following combination of characteristics: the coupling parts and locking elements are formed in one piece with the core of the floor panels; the coupling parts have such a shape that two subsequent floor panels can be engaged into each other exclusively by snapping together and/or turning, whereby each subsequent floor panel can be inserted laterally into the previous; the coupling parts are interlocked free from pay in all directions in a plane extending perpendicular to the aforementioned edges; the possible difference between the upper and lower lip of the lips which border the aforementioned grooves, measured in the plane of the floor panel and perpendicular to the longitudinal direction of the groove, is smaller than one time the total of the thickness of the panel; the total thickness of each related floor panel is larger than or equal to 5 mm; and that the basic material of the floor panels, of which the aforementioned core and locking elements are formed, consists of a ground product which, by means of a binding agent or by means of melting together, is made into a unitary composite, and/or of a product on the basis of synthetic material and/or of a chip board with fine chips.
In the most preferred form of embodiment, for the basic material use shall be made of the aforementioned product, which, as said, is ground and, by means of a binding agent, made into a unitary composite material. More particularly, for the core use shall be made of finely-ground wood which preferably is glued, more particularly, moisture resistant glued. Still more particularly, for the core use shall be made of so-called HDF board (High Density Fibreboard) or MDF board (Medium Density Fibreboard) which is highly compressed ground wood particles and binder material. Hereinafter, the wood component of the core material shall be referred to as �wood product�.
The fact that the invention is applied to floor panels the basic material of which consists of the material described above, offers the advantage that with he processing of this material, very smooth surfaces are obtained whereby very precise couplings can be realized, which, in first instance, is important in the case of a snap-together connection and/or turning connection free from play. Also, very special forms of coupling parts can be manufactured in a very simple manner because the aforementioned kinds of material can be processed particularly easy.
The inner side 20 of the groove 10 and the 4 front side 19 of the tongue 9 of the two interlocked floor panels 1 preferably do not fit closely against each other, such that an intermediate space 21 is created between them into which possible dust remainders or such can be pushed away by means of the tongue 9.
It is, however, clear that a number of minor deviations to these complementary forms can occur which, anyhow, have no or almost no effect upon the receipt and transmission of pressure forces. For example, a chamfer 24 and lip 22 on a recess 25 can be provided, as represented in FIGS. 2 to 4, as a result of which the subsequent floor panels 1 can easily be pushed and guided into each other, such that no possible ridges in the subflooring or such render good insertion difficult.
Patent CitationsCited PatentFiling datePublication dateApplicantTitleUS753791Aug 25, 1903Mar 1, 1904Elisha J FulghumMethod of making floor-boards.US1124228Feb 28, 1913Jan 5, 1915 Matched flooring or board.US1986739Feb 6, 1934Jan 1, 1935Mitte Walter FNail-on brickUS1988201Apr 15, 1931Jan 15, 1935Hall Julius RReenforced flooring and methodUS2276071Jan 25, 1939Mar 10, 1942Johns ManvillePanel constructionUS2430200Nov 18, 1944Nov 4, 1947Nina Mae WilsonLock jointUS2740167Sep 5, 1952Apr 3, 1956Rowley John CInterlocking parquet blockUS3045294Mar 22, 1956Jul 24, 1962Livezey Jr William FMethod and apparatus for laying floorsUS3267630Apr 20, 1964Aug 23, 1966Powerlock Floors IncFlooring systemsUS3310919Oct 2, 1964Mar 28, 1967Sico IncPortable floorUS3387422Oct 28, 1966Jun 11, 1968Bright Brooks Lumber Company OFloor constructionUS3526420May 22, 1968Sep 1, 1970IttSelf-locking seamUS3538665Apr 15, 1968Nov 10, 1970Bauwerke AgParquet flooringUS3694983May 19, 1970Oct 3, 1972Pierre Jean CouquetPile or plastic tiles for flooring and like applicationsUS3731445Aug 3, 1970May 8, 1973Freudenberg CJoinder of floor tilesUS3759007Sep 14, 1971Sep 18, 1973Steel CorpPanel joint assembly with drainage cavityUS3859000Mar 30, 1972Jan 7, 1975Reynolds Metals CoRoad construction and panel for making sameUS4164832Mar 31, 1978Aug 21, 1979Alex Van ZandtTongue and groove structure in preformed wall sectionsUS4169688Nov 9, 1977Oct 2, 1979Sato ToshioArtificial skating-rink floorUS4426820Feb 17, 1981Jan 24, 1984Heinz TerbrackPanel for a composite surface and a method of assembling sameUS4501102Mar 11, 1982Feb 26, 1985James KnowlesComposite wood beam and method of making sameUS4641469Jul 18, 1985Feb 10, 1987Wood Edward FPrefabricated insulating panelsUS4738071Oct 10, 1986Apr 19, 1988Ezijoin Pty. Ltd.Manufacture of wooden beamsUS4769963Jul 9, 1987Sep 13, 1988Structural Panels, Inc.Bonded panel interlock deviceUS4819932Feb 28, 1986Apr 11, 1989Trotter Jr PhilCushionedUS5029425Mar 13, 1989Jul 9, 1991Ciril BogatajStone cladding system for wallsUS5179812May 13, 1991Jan 19, 1993Flourlock (Uk) LimitedFlooring productUS5216861Jul 3, 1991Jun 8, 1993Structural Panels, Inc.Building panel and methodUS5295341Jul 10, 1992Mar 22, 1994Nikken Seattle, Inc.Snap-together flooring systemUS5349796Dec 20, 1991Sep 27, 1994Structural Panels, Inc.Building panel and methodUS5502939Jul 28, 1994Apr 2, 1996Elite Panel ProductsInterlocking panels having flats for increased versatilityUS5630304Aug 26, 1996May 20, 1997Austin; JohnAdjustable interlock floor tileUS5706621Apr 29, 1994Jan 13, 1998Valinge Aluminum AbSystem for joining building boardsUS5768850Feb 4, 1997Jun 23, 1998Chen; AlenMethod for erecting floor boards and a board assembly using the methodUS5797175Feb 7, 1997Aug 25, 1998Richard Bergner Gmbh & Co.Process for connecting an insert to a sheet to form a joint designed to be secured against rotation and insert ejectionUS5797237Feb 28, 1997Aug 25, 1998Standard Plywoods, IncorporatedFlooring systemUS5860267Jan 6, 1998Jan 19, 1999Valinge Aluminum AbMethod for joining building boardsUS6023907Nov 18, 1998Feb 15, 2000Valinge Aluminium AbMethod for joining building boardsUS6182410Jul 19, 1999Feb 6, 2001V�linge Aluminium ABSystem for joining building boardsAU1309883A Title not availableBE417526A Title not availableBE557844A Title not availableCA991373A Title not availableCH200949A Title not availableCH211877A Title not availableCH562377A5 Title not availableDE1212275BMay 25, 1957Mar 10, 1966Roberto PiodiFussbodenbelagplatteDE1534278A1Feb 18, 1966Nov 18, 1971Harvey Aluminum IncVerriegelungsvorrichtung fuer LasttragflaechenDE1534802A1Feb 8, 1965Apr 2, 1970Weber Geb WalterEinzelplatte fuer StabfussbodenDE2238660A1Aug 5, 1972Feb 7, 1974Heinrich HebgenFormschluessige fugenverbindung von plattenfoermigen bauelementen ohne gesonderte verbindungselementeDE2502992A1Jan 25, 1975Jul 29, 1976Geb Jahn Helga TritschlerBodenplatteDE2616077A1Apr 13, 1976Oct 27, 1977Hans Josef HewenerVerbindungssteg mit flansch fuer parkettfussboedenDE2917025A1Apr 26, 1979Nov 27, 1980Reynolds Aluminium France S AZu einer loesbaren paneelenverbindung geeignete und im breitenverband vereinigbare paneele mit profilleisten im bereich gegenueberliegender flaechenDE3041781A1Nov 5, 1980Jun 24, 1982Terbrack Kunststoff Gmbh & CoVerbindungsmittel fuer plattenDE3246376A1Dec 15, 1982Jun 20, 1984Peter BallasSheet-metal panels for covering walls or ceilingsDE3343601A1Dec 2, 1983Jun 13, 1985Buetec Ges Fuer BuehnentechnisJoining arrangement for rectangular boardsDE3512204A1Apr 3, 1985Oct 16, 1986Herbert HeinemannCladding of exterior walls of buildingsDE3544845A1Dec 18, 1985Jun 19, 1987Max LiebichProfiled-edge board for producing wooden panelsDE4215273A1May 9, 1992Nov 18, 1993Dietmar GroegerFloor, wall and/or ceiling cladding in adjacent strips - consists of tongue and groove coupled planks with couplers on understructure coupling stripsDE4242530A1Dec 16, 1992Jun 23, 1994Walter FriedlConstructional element for walls, ceiling, or roofsDE7102476A Title not availableDE7402354A Title not availableDE8604004U1Feb 14, 1986Apr 30, 1986Balsam Sportstaettenbau Gmbh & Co. Kg, 4803 Steinhagen, DeTitle not availableEP0248127A1Jun 2, 1986Dec 9, 1987Hockney Pty LimitedA table top for a motor lorryEP0667936A1Jul 7, 1993Aug 23, 1995Bergner Richard Gmbh CoInsert for use as a connection element for joints designed to be secure against rotation and insert ejection.FR1293043A Title not availableFR2568295A1 Title not availableFR2630149A1 Title not availableFR2675174A1 Title not availableFR2691491A1 Title not availableFR2697275A1 Title not availableGB424057A Title not availableGB1127915A Title not availableGB1237744A Title not availableGB1275511A Title not availableGB1430423A Title not availableGB2117813A Title not availableGB2243381A Title not availableGB2256023A Title not availableJPH0656310A Title not availableJPH0776923A Title not availableJPH03169967A Title not availableJPH05148984A Title not availableJPH06146553A Title not availableJPH06200611A Title not availableJPH06320510A Title not availableJPH07180333A Title not availableJPH07300979A Title not availableJPH07310426A Title not availableJPH08270193A Title not availableJPS5465528A Title not availableJPS57119056A Title not availableNL7601773A Title not availableSE372051B Title not availableSE450141B Title not availableSE501014A Title not availableSE502994A Title not availableWO1984002155A1Dec 2, 1983Jun 7, 1984Christer BjoerklundDevice for joining together building boards, such as floor boardsNon-Patent CitationsReference1Abgustaff Kahr Opposition Against Unilin European Patent No. EP 0 843 763 (Jun. 29, 2001).2Akzenta Brief (Arguments) in Support of Intervention in Opposition Against Unilin European Patent No. EP 0 843 763 (Sep. 11, 2001).3EFP Floor Products Opposition Against Unilin European Patent No. EP 0 843 763 (Oct. 27, 2000).4Hornitex-Werke Opposition to Unilin European Patent No. EP 0 843 763 (Jul. 4, 2001).5Kronospan Action to Nullify Unilin German Utility Model Patent No. 297 24 428 U1, Including Cited Documents E2 (with Partial Translation); E3; E5; and E6 (with Translation) (Aug. 9, 2001).6Kronospan Opposition Against Unilin European Patent No. EP 0 843 763 (Jul. 14, 2001).7Kronotex Arguments filed before Federal Patent Court in Appeal from Adverse Decision of German Patent Office Upholding Validity on Unilin German Utility Model Patent No. DE-UM 297 10 175 (Jul. 24, 2001).8Kronotex Arguments in Appeal from Decision of German Patent Court Upholding Validity of Unilin German Utility Model Patent No. DE-UM 29 710 175 (Jul. 17, 2000).9Kronotex Opposition Against Unilin Australian Patent Application No. 713,628 AU-B (32569/97) (Sep. 1, 2000).10Kronotex Opposition Against Unilin European Patent No. EP 0 843 763 (Jun. 29, 2001).11Observations by Third Party (Kandl) Regarding Patentability of Unilin European Patent Application No. 00201515.4 (Including Partial Translation of Document E2 Cited Therein) (Oct. 10, 2001).12Observations of M. Kandl submitted in European patent application No. 00201515.4 of Unilin Beheer, Dec. 18, 2001.13Observations of M. Kandl submitted in European patent application No. 00201515.4 of Unilin Beheer, Jan. 14, 2002.14Observations of M. Kandl submitted in European patent application No. 00201515.4 of Unilin Beheer, Jan. 24, 2002.15Observations of M. Kandl submitted in European patent application No. 00201515.4 of Unilin Beheer, Oct. 18, 2001.16Valinge Aluminium Observations Regarding Unilin European Patent No. EP 0 83 763 (Nov. 19, 1998).17Valinge Aluminium Opposition Against Unilin Australia Patent Application No. 713 628 (AU-B 325 60/97) (Jun. 6, 2000).18Valinge Aluminium Opposition Against Unilin Australia Patent Application No. 713 628 (AU�B 325 60/97) (Jun. 6, 2000).19Valinge Aluminium Opposition Against Unilin European Patent No. EP 0 843 763 with Copies of Cited Documents (Aug. 6, 2001).20Valinge Aluminium Opposition Against Unilin New Zealand Patent 329,581 (Jun. 2001).Referenced byCiting PatentFiling datePublication dateApplicantTitleUS6681820Jan 30, 2002Jan 27, 2004Pergo (Europe) AbMolding substantial part of profile cross-section by milling with milling tool, fine molding undercuts in at least groove of board by broaching utilizing at least one broaching toolUS6766622 *Jul 20, 1999Jul 27, 2004Unilin Beheer B.V.Floor panel for floor covering and method for making the floor panelUS6865855Apr 16, 2002Mar 15, 2005Kaindl, MBuilding component structure, or building componentsUS7065935Aug 4, 2004Jun 27, 2006Akzenta Paneele & Profile GmbhMethod for laying and interlocking panelsUS7121058 *Nov 4, 2002Oct 17, 2006Pergo (Europe) AbBuilding panelsUS7127860Sep 6, 2002Oct 31, 2006Valinge Innovation AbFlooring and method for laying and manufacturing the sameUS7146772 *Sep 17, 2002Dec 12, 2006Akzenta Paneele + Profile GmbhPanel and locking system for panelsUS7322299 *Nov 18, 2004Jan 29, 2008Greene Joseph PInterlocking modular tubular palletUS7337588 *Feb 18, 2000Mar 4, 2008Maik MoebusPanel with slip-on profileUS7442423Apr 28, 2003Oct 28, 2008Shaw Industries GroupHard surface-veneer engineered surfacing tilesUS7451578Jul 4, 2002Nov 18, 2008Akzenta Paneele + Profile GmbhPanel and fastening system for such a panelUS7454874 *Dec 12, 2006Nov 25, 2008Akzenta Paneele + Profile GmbhPanel and locking system for panelsUS7543418 *Jun 18, 2003Jun 9, 2009Weitzer Parkett Gmbh & Co. K.G.Panel element and connecting system for panel elementsUS7584583Jul 9, 2007Sep 8, 2009Valinge Innovation AbResilient grooveUS7596920Dec 28, 2003Oct 6, 2009Barlinek, S.A.Floor panelUS7603826 *Jun 7, 2000Oct 20, 2009Kronospan Technical Company LtdPanels with coupling meansUS7637066 *Jun 9, 2006Dec 29, 2009Unilin Beheer B.V., Besloten VennootschapFloor panels with edge connectorsUS7677005Mar 5, 2008Mar 16, 2010Valinge Innovation Belgium BvbaMechanical locking system for floorboardsUS7721503Jul 9, 2007May 25, 2010Valinge Innovation AbLocking system comprising a combination lock for panelsUS7726089 *Jun 9, 2006Jun 1, 2010Unilin Beheer B.V., Besloten VennootschapFloor panels with edge connectorsUS7802411Jul 9, 2007Sep 28, 2010Valinge Innovation AbMechanical locking system for floor panelsUS7841145Aug 10, 2007Nov 30, 2010Valinge Innovation AbMechanical locking system for panels and method of installing sameUS7841150Jul 9, 2007Nov 30, 2010Valinge Innovation AbMechanical locking system for floorboardsUS7856789 *Jun 27, 2006Dec 28, 2010Akzenta Paneele & Profile GmbhMethod for laying and interlocking panelsUS7861482Jun 29, 2007Jan 4, 2011Valinge Innovation AbLocking system comprising a combination lock for panelsUS7866110Jul 9, 2007Jan 11, 2011Valinge Innovation AbMechanical locking system for panels and method of installing sameUS7908815Jul 11, 2007Mar 22, 2011Valinge Innovation AbMechanical locking of floor panels with a flexible bristle tongueUS7980041Aug 25, 2010Jul 19, 2011Valinge Innovation AbMechanical locking system for floor panelsUS7980043Jun 15, 2009Jul 19, 2011Kronoplus Technical AgPanels with coupling meansUS7993731Apr 28, 2004Aug 9, 2011Shaw Industries Group, Inc.Hard surface-veneer engineered surfacing tilesUS8033074May 27, 2010Oct 11, 2011Valinge Innovation AbMechanical locking of floor panels with a flexible bristle tongueUS8042311Dec 4, 2007Oct 25, 2011Valinge Innovation AbMechanical locking system for panels and method of installing sameUS8061104 *May 20, 2005Nov 22, 2011Valinge Innovation AbMechanical locking system for floor panelsUS8079196Dec 7, 2010Dec 20, 2011Valinge Innovation AbMechanical locking system for panelsUS8112967May 15, 2009Feb 14, 2012Valinge Innovation AbMechanical locking of floor panelsUS8171692Jul 9, 2007May 8, 2012Valinge Innovation AbMechanical locking system for floor panelsUS8181416 *Jun 13, 2011May 22, 2012Valinge Innovation AbMechanical locking system for floor panelsUS8234830Feb 3, 2011Aug 7, 2012V�linge Innovations ABMechanical locking system for floor panelsUS8312686Jan 22, 2004Nov 20, 2012Pergo (Europe) AbProcess for the manufacturing of joining profilesUS8341915Oct 21, 2005Jan 1, 2013Valinge Innovation AbMechanical locking of floor panels with a flexible tongueUS8353140Nov 7, 2008Jan 15, 2013Valinge Innovation AbMechanical locking of floor panels with vertical snap foldingUS8375673Aug 26, 2002Feb 19, 2013John M. EvjenMethod and apparatus for interconnecting panelingUS8381477Jul 11, 2008Feb 26, 2013Valinge Innovation AbMechanical locking of floor panels with a flexible tongueUS8429869 *May 3, 2011Apr 30, 2013Valinge Innovation AbLocking system and flooring boardUS8448402Dec 16, 2011May 28, 2013V�linge Innovation ABMechanical locking of building panelsUS8499521Nov 7, 2008Aug 6, 2013Valinge Innovation AbMechanical locking of floor panels with vertical snap folding and an installation method to connect such panelsUS8505257Jan 30, 2009Aug 13, 2013Valinge Innovation AbMechanical locking of floor panelsUS8528289Mar 21, 2012Sep 10, 2013Valinge Innovation AbMechanical locking system for floor panelsUS8544230Dec 23, 2010Oct 1, 2013Valinge Innovation AbMechanical locking system for floor panelsUS8544234Oct 25, 2012Oct 1, 2013Valinge Innovation AbMechanical locking of floor panels with vertical snap foldingUS8590253May 24, 2010Nov 26, 2013Valinge Innovation AbLocking system for floorboardsUS8607532Oct 20, 2004Dec 17, 2013Petec Soci�t� AnonymeBuilding component for forming a floor or wall coveringsUS8615955May 24, 2012Dec 31, 2013Valinge Innovation AbLocking system, floorboard comprising such a locking system, as well as method for making floorboardsUS8627862Jan 30, 2009Jan 14, 2014Valinge Innovation AbMechanical locking of floor panels, methods to install and uninstall panels, a method and an equipment to produce the locking system, a method to connect a displaceable tongue to a panel and a tongue blankUS8640424 *Aug 8, 2013Feb 4, 2014Valinge Innovation AbMechanical locking system for floor panelsUS8733410Mar 5, 2008May 27, 2014Valinge Innovation AbMethod of separating a floorboard materialUS8745952Dec 12, 2011Jun 10, 20144Sight Innovation B.V.Floor panel and floor covering consisting of a plurality of such floor panelsUS20110167744 *Jan 10, 2011Jul 14, 2011Mannington Mills, Inc.Floor Covering With Interlocking DesignUS20110203214 *May 3, 2011Aug 25, 2011Valinge Innovation AbLocking system and flooring boardUS20120042595 *Apr 22, 2010Feb 23, 2012Lode De BoeFloor panelCN101680230BOct 25, 2007Mar 26, 2014瓦林格创新股份有限公司通过垂直折叠实现的地板镶板的机械锁定WO2004059104A1 *Dec 28, 2003Jul 15, 2004Barlinek S AFloor panelWO2005040521A2 *Oct 20, 2004May 6, 2005Petec SaBuilding component for forming a floor or wall coveringsWO2008060232A1 *Oct 25, 2007May 22, 2008Darko PervanMechanical locking of floor panels with vertical foldingWO2009109031A1 *Jun 27, 2008Sep 11, 2009Ren� ST-CYR (1996) Inc.Pivotably detachable hardwood floorboardsWO2010143962A2Jun 14, 2010Dec 16, 20104Sight Innovation B.V.Floor panel and floor covering consisting of a plurality of such floor panels* Cited by examinerClassifications U.S. Classification52/589.1, 52/586.1, 52/592.1, 52/590.2, 52/592.3International ClassificationB32B21/13, B27C5/00, E04F15/04, B32B21/02, B27M3/04, B27F1/06, E04F15/00, E04C2/40, E04B2/08, E04F15/02, F16B5/00Cooperative ClassificationE04F2201/0107, B27F1/06, E04F15/107, E04F2201/0161, F16B5/0016, E04B5/00, E04F2201/023, B27M3/04, E04F15/02, E04F2201/0115, E04F15/04, E04F2201/026, F16B5/008, E04F2201/0153European ClassificationF16B5/00A1B2, B27F1/06, B27M3/04, E04F15/02, E04F15/10C, E04F15/04, F16B5/00A4Legal EventsDateCodeEventDescriptionMay 30, 2014FPAYFee paymentYear of fee payment: 12Mar 19, 2014ASAssignmentEffective date: 20140319Free format text: ADDRESS CHANGE;ASSIGNOR:UNILIN BEHEER B.V., BESLOTEN VENNOOTSCHAP;REEL/FRAME:032471/0927Owner name: UNILIN BEHEER B.V., BESLOTEN VENNOOTSCHAP, NETHERLDec 10, 2010SULPSurcharge for late paymentYear of fee payment: 7Dec 10, 2010FPAYFee paymentYear of fee payment: 8Jul 19, 2010REMIMaintenance fee reminder mailedJun 5, 2006FPAYFee paymentYear of fee payment: 4Jun 24, 2003CCCertificate of correctionRotateOriginal ImageGoogle Home - Sitemap - USPTO Bulk Downloads - Privacy Policy - Terms of Service - About Google Patents - Send FeedbackData provided by IFI CLAIMS Patent Services©2012 Google