Connectors for joining adjacent modular floor covering units. The connectors include a film and an adhesive layer coated on one side of the film. To install tiles using the connectors, a first tile is placed on the floor and a connector is positioned so that the adhesive layer faces upward and does not...http://www.google.fr/patents/US7464510?utm_source=gb-gplus-shareBrevet US7464510 - System and method for floor covering installation