Patent ID: 7845140

Claim:
A flooring system comprising rectangular floorboards which are mechanically lockable, in which system the individual floorboards along their long sides have pairs of opposing connectors for locking together similar, adjoining floorboards both vertically and horizontally and along their short sides have pairs of opposing connectors which lock the floorboards horizontally, wherein the connectors of the floorboards are designed to allow locking-together of the long sides by angling along an upper joint edge, wherein the system comprises two different types of floorboards, the connectors of one type of the floorboards along one pair of opposite edge portions arranged in a mirror-inverted manner relative to the corresponding connectors along the same pair of opposite edge portions of the other type of floorboards, wherein said pair of opposing connectors of said short sides are adapted for locking the floorboards only horizontally, wherein the mirror inverted panels are connected to each other wherein a short side is lockable to a long side.