Patent ID: 8702067

Claim:
An axial displacement device to be used in conjunction with a rotary winch, said winch comprising a drum being rotatable about an axis of rotation, said axial displacement device to be arranged stationary with respect to the axis of rotation of said drum and comprising one or more guiding elements, wherein, at least one winding of a line is to be arranged around said drum and said one or more guiding elements of said axial displacement device, a part of the at least one winding being in contact with said drum and a part of the at least one winding being disengaged from the drum and in contact with the one or more guiding elements; wherein said part being in contact with said drum extends from a first disengaged part of the winding to a second disengaged part of a next winding; and wherein said one or more guiding elements are configured to displace the part of said at least one winding of the line which is disengaged from the drum in a direction parallel to said axis of rotation by a distance of at least the diameter of said line, so that the entire part of said winding being in contact with said drum runs in a plane perpendicular to the axis of rotation.