Patent ID: 11913237
Assignee: I4F LICENSING NV
Field: Civil engineering (Other fields)
Classification: CPC E | IPC E

Claim 11:
12. A panel comprising a panel top side and a panel underside and comprising at least four panel margins which are situated opposite one another in pairwise fashion, having complementary holding profiles which are provided in pairwise fashion on the panel margins and which fit together such that identical panels are fastenable to one another, wherein a first holding profile pair is equipped with a groove profile and a tongue profile, wherein the groove profile and the tongue profile of identical panels can be locked together by means of a pivoting joining movement, and wherein a second holding profile pair is equipped with hook profiles, specifically with a receiving hook on one panel margin and with an arresting hook on the opposite panel margin, wherein the receiving hook has a receiving edge directed toward the panel top side and a receiving groove open toward the panel top side, and the arresting hook is equipped with an arresting edge which is directed toward the panel underside and with an arresting groove which is open toward the panel underside, wherein the receiving edge has a receiving edge inner side which faces toward the receiving groove, and said receiving edge inner side serves as a lower locking surface, and in a similar manner, the arresting edge has an arresting edge inner side which faces toward the arresting groove, and said arresting edge inner side serves as a corresponding upper locking surface, with the structure that both the lower locking surface and the upper locking surface are each inclined relative to the perpendicular to the panel top side such that, in the locked state, said lower locking surface and upper locking surface are oriented parallel to one another and make contact, wherein the inclination of the locking surfaces is such that the normal vector with respect to the lower locking surface intersects the panel top side, and the normal vector with respect to the upper locking surface intersects the panel underside, wherein a lower detent engagement point is provided which comprises a first detent means which is arranged on an outer side of the receiving edge, and the lower detent engagement point comprises a second detent means which corresponds to said first detent means and which is arranged on a recessed groove flank of the arresting groove, wherein at least a partial section of the top side of the receiving edge runs downward in an inclined manner in the direction of the outer side of the receiving edge, wherein at least a partial section of the groove base of the arresting groove is adapted in complementary fashion to the inclination of the partial section of the top side of the receiving edge, wherein, in a coupled condition, a gap is provided between the inclined partial section of the groove base of the arresting groove and the inclined partial section of the top side of the receiving edge, in which the gap has an inclined orientation, wherein a bottommost surface of the arresting hook defines a shoulder including an inclined surface that extends from the bottommost surface of the arresting hook and a planar surface that extends parallel to the panel top side, wherein the planar surface extends from the inclined surface at an end of the inclined surface opposite to an end at the bottommost surface of the arresting hook, wherein a transition is provided between the partial section of the groove base of the arresting groove and the upper locking surface of the arresting hook, and wherein the transition is curved.