Patent ID: 8857525

Claim:
A sealing device for sealing a casing comprising: a housing with an outside diameter; a core inside the housing; at least two sealing segments slidable against the core to change the outside diameter of the sealing device on at least one position of the sealing device; at least two wedges slidable against the core and slidable against the sealing segments; a first actuator for moving the at least two sealing segments and the at least two wedges relative to the core; and a second actuator or moving the at least two wedges relative to the core and the sealing segments; wherein in a sealing configuration, the at least two wedges and the at least two sealing segments are positioned by the actuators against the casing and together seal the sealing device against the casing; wherein in the sealing configuration, the wedge and sealing segments are alternately positioned between one another to define an outer circumference of the sealing device; and wherein in a removed sealing configuration, the at least two wedges and the at least two sealing segments are retracted by the actuators from the casing and the outside diameter of the sealing device is decreased.