An apparatus for forming an expanded connection in a wellbore, whereby the apparatus includes a first tubular radially expandable outward into contact with an inner wall of a second tubular upon the application of an outwardly directed force supplied to an inner surface of the first tubular. The apparatus...http://www.google.fr/patents/US7028780?utm_source=gb-gplus-shareBrevet US7028780 - Expandable hanger with compliant slip system
