Patent ID: 8894115
Filing Date: 2014-11-25
Classification: B66C,B66D

Abstract:
1. A method of handling a generally cylindrical conduit having a central longitudinal axis, the method comprising: positioning a lift cylinder within the generally cylindrical conduit, the lift cylinder including an inflatable bag, an inflation port, and an attachment point, the inflatable bag being substantially hollow from the central longitudinal axis of the generally cylindrical conduit to an inner surface of the inflatable bag, and wherein a volume of the inflatable bag passes through the central longitudinal axis; connecting a fluid source to the inflation port; inflating the inflatable bag with the fluid source such that an outer surface of the inflatable bag engages an inner surface of the generally cylindrical conduit; connecting a winch to the attachment point; and moving the lift cylinder and the generally cylindrical conduit with the winch.