Patent ID: 9027306
Filing Date: 2015-05-12
Classification: E04F,Y10T

Abstract:
1. A flooring system, comprising a plurality of rectangular floor panels adapted to be installed on a sub floor, said panels having long and short edges which are connectable to each other along one pair of adjacent edges of adjacent panels having a mechanical locking system comprising a tongue formed in one piece with the panels and a groove for mechanically locking together said adjacent edges at right angles to the horizontal plane of the panels, thereby forming a vertical mechanical connection between the panels, and a locking element at one first edge and a locking groove at an opposite second edge thereby forming a first horizontal mechanical connection locking the panels to each other in a direction parallel to the horizontal plane and at right angles to the joint edges, wherein: each panel is made up of one or more upper layers of decorative plastic material and an intermediate core plastic material, each panel at said adjacent edges being provided with a second horizontal mechanical connection locking the panels to each other along the joint edges, in a direction parallel to the horizontal plane and parallel to the joint edges, when the panels are laying flat on the sub floor, said second horizontal mechanical connection comprises a plurality of protrusions in said mechanical locking system which reduces displacement of the panels along the joint edges when the panels are laying flat on the sub floor and are locked with the vertical mechanical connection and the first horizontal mechanical connection, the protrusions extending in a direction that traverses a line along the joint edges.