Cable lift without a machine room
First Claim
Patent Images
1. A cable lift comprising:
- a single compartment or shaft (1) housing a movable cage (2) and apparatus (3) including at least one winch (4) with a cable fixed on a wall (16) in an upper space (1a) of the shaft (1) opposite a side wall of the cage (2) when the cage (2) is fully elevated in the shaft (1);
wherein the upper space (1a) is occupied only by the apparatus (3) during operation of the movable cage (2);
wherein the winch (4) has a traction pulley (4c) with an axis of rotation (4a) parallel to the wall (1b) on which the winch (4) is fixed and a traction pulley (4c) over which the cable travels and extends to travel around at least one drive pulley (5a) on a counterweight (5) for displacement of the cage (2);
wherein the cable (6) has a first end (6a) fixed to the cage (2) and a second end (6b) fixed in the upper space (1a);
wherein the counterweight (5) is always located below the cage (2) during ascent or descent of the cage (2); and
wherein during any displacement of the cage (2), travel of the cable (6) around the drive pulley (5a) results in displacement of the counterweight (5) equal to substantially half the displacement of the cage (2).
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Accused Products
Abstract
In a cable lift, with a single compartment or shaft (1) for housing a movable cage (2) and an apparatus (3), comprising at least one fixed winch (4) and a counterweight (5), for displacement of the cage (2), the counterweight (5) performs travel movements shorter than those of the cage (2) so that a part (1a) of the shaft (1) is always free to house the winch (4) therein. The latter, in particular, comprises a traction pulley (4c) with its axis (4a) parallel to a wall (1b) of the shaft (1), next to which it is arranged.
22 Citations
5 Claims
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1. A cable lift comprising:
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a single compartment or shaft (1) housing a movable cage (2) and apparatus (3) including at least one winch (4) with a cable fixed on a wall (16) in an upper space (1a) of the shaft (1) opposite a side wall of the cage (2) when the cage (2) is fully elevated in the shaft (1); wherein the upper space (1a) is occupied only by the apparatus (3) during operation of the movable cage (2); wherein the winch (4) has a traction pulley (4c) with an axis of rotation (4a) parallel to the wall (1b) on which the winch (4) is fixed and a traction pulley (4c) over which the cable travels and extends to travel around at least one drive pulley (5a) on a counterweight (5) for displacement of the cage (2); wherein the cable (6) has a first end (6a) fixed to the cage (2) and a second end (6b) fixed in the upper space (1a); wherein the counterweight (5) is always located below the cage (2) during ascent or descent of the cage (2); and wherein during any displacement of the cage (2), travel of the cable (6) around the drive pulley (5a) results in displacement of the counterweight (5) equal to substantially half the displacement of the cage (2). - View Dependent Claims (2, 3, 4, 5)
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Specification