Patent ID: 8857127
Filing Date: 2014-10-14
Classification: B44C,E04F,Y10T

Abstract:
1. Floor covering comprising panels, each panel comprising: a core of polyvinylchloride (PVC), said core comprising filling materials, a glass fiber mat provided in an upper portion of a center of the core and extending horizontally through the core, complementary and mutually engaging locking profiles at connected lateral edges thereof, the lateral edge of one of said locking profiles including a lower protrusion that comprises a trough-shaped receiving portion on an upper side thereof, said receiving portion having a generally trapezoid shaped cross-section and being delimited towards an end of the protrusion by an elevated portion, and above the receiving portion, an upper lateral edge portion being generally vertical and comprising a flexible detent that is angled relative to vertical, the lateral edge of the other locking profile being provided with a protrusion facing in a downward direction at the lateral edge thereof adapted to be received within the receiving portion of the one said locking profile by being depressed in a vertical direction into the receiving portion, the other said locking profile including a depression shaped complementary to said angled flexible detent for engagement therewith, wherein at least one of said panels includes a milled-out portion at an upper side of a lateral edge thereof, with the cover layers thereat being excavated completely over a width of the milled-out portion so that a bottom of the milled-out portion is formed by the material of the core, such that a groove with a rectangular cross section and approximately vertical sidewalls is formed between the two said connected panels, being delimited laterally by the sidewalls of upper edges of the said connected panels.