Patent ID: 11866309
Assignee: MANITOWOC CRANE GROUP FRANCE
Field: Handling (Mechanical engineering)
Classification: CPC B | IPC B

Claim 12:
13. The double-reeved lifting device according to claim 12, wherein the at least one distal guide element comprises several distal ramps successively distributed around the main axis on the proximal end of the bolt, and
the at least one complementary distal guide element comprises one or several distal dowel pin(s) projecting radially on the spindle in order to slidably bear on one of the several distal ramps, and
wherein the several proximal ramps and the several distal ramps are inclined in opposite directions around the main axis, so that the concomitant first rotation and the concomitant second rotation of the bolt is performed in a same rotational direction, during the conversions of the slidings of the bolt in the first sliding direction and the second sliding direction respectively.