Patent ID: 8127417

Claim:
A system comprising: a shaft comprising an axially-extending passage, the axially-extending passage defining an inside surface of the shaft; a bearing assembly through which the shaft extends; a fulcrum block; an arm adapted to pivot about the fulcrum block; a lift block pivotally coupled to the arm, the lift block comprising at least one surface adapted to apply a force against the inside surface of the shaft defined by the axially-extending passage in response to the pivoting of the arm about the fulcrum block; a first configuration in which the bearing assembly at least partially supports the shaft and relative movement between the bearing assembly and the shaft is generally prevented; and a second configuration in which the lift block at least partially extends within the axially-extending passage of the shaft, the at least one surface of the lift block applies the force against the inside surface of the shaft, and relative movement between the bearing assembly and the shaft is generally permitted.