Patent ID: 8002044

Claim:
A liner hanger for hanging a liner within a bore of a casing string, the liner hanger comprising: a housing for securing into the casing string at a desired location, the housing having a housing bore, an outer wall surface, and an inner wall surface, the inner wall surface having a pocket disposed thereon; a slip disposed within the pocket, the slip having a gripping inner wall surface, the slip being movable from an upper position fully recessed within the pocket to a lower position wherein the gripping inner surface protrudes inward from the pocket; a cover disposed interior to the slip, the cover having a first position in which the cover restricts movement of the slip toward the lower position, and a second position in which the slip is capable of movement toward the lower position; and an actuator for connection to a liner for placement within the housing bore, the actuator when in the housing bore, causing the cover to move from the first position to the second position so that the slip is capable of moving from the upper position to the lower position to engage and secure the liner within the bore, wherein the slip comprises a flange member in sliding engagement with an inner wall surface of the pocket to form a chamber, the chamber comprising a downwardly biased member operatively associated with the flange member of the slip for facilitating movement of the slip from the upper position to the lower position.