Lifting unit
AssigneeAscom AG
InventorFranco Sevalie′
Life of this patent
Estimating the term…
Abstract
A lifting unit, comprising a frame for supporting a motorized winch, at least one first tackle and one second tackle, the first tackle being interposed between the second tackle and the winch, each tackle being provided with two blocks, a fixed one and a movable one, and each comprising at least one pulley, and a flexible element, with a first end connected to the winch and wound around the pulleys, to form at least one initial loop around the first tackle, an outgoing portion from the first tackle to the second tackle, at least one intermediate loop around the second tackle, a return portion from the second tackle to the first tackle, and at least one end loop around the first tackle, the second end of the flexible element being connected to the frame, and a temporarily locking element for locking sliding of the flexible element.
Claims12
A lifting unit, comprising:
- a frame;
- a motorized winch;
- at least one first tackle;
- at least one second tackle, said first tackle being interposed between said second tackle and said winch, said first and second tackles and winch being supported at said frame;
- two blocks, provided at each of said first and second tackles, a fixed one and a movable one;
- at least one pulley, provided at each one of said blocks;
- a flexible element, having a first end connected to said winch and being wound around said pulleys so as to form at least one initial loop around said first tackle, an outgoing portion from said first tackle to said second tackle, at least one intermediate loop around said second tackle, a return portion from said second tackle to said first tackle, and at least one end loop around said first tackle, a second end of said flexible element being connected to said frame;
- and locking means which act at said flexible element along said return portion for temporarily locking sliding of said flexible element.
Dependencies are inferred from the claim text.