Elevator
First Claim
1. Elevator, preferably an elevator without machine room, in which elevator a hoisting machine engages a set of hoisting ropes via a traction sheave, said set of hoisting ropes comprising hoisting ropes of substantially circular cross-section, said ropes having a load-bearing part twisted from steel wires of circular and/or non-circular cross-section, and in which elevator the hoisting ropes support a counterweight and an elevator car moving on their tracks, characterized in that the cross-sectional area of the steel wires of the hoisting ropes is larger than about 0.015 mm2 and smaller than about 0.2 mm2, and that the steel wires of the hoisting ropes have a strength exceeding about 2000 N/mm2.
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Accused Products
Abstract
In an elevator, preferably one without machine room, a hoisting machine engages a set of hoisting ropes via a traction sheave, said set of hoisting ropes comprising hoisting ropes of substantially circular cross-section. The ropes have a load-bearing part twisted from steel wires of circular and/or non-circular cross-section. The steel wires of the hoisting ropes have a cross-sectional area larger than about 0.015 mm2 and smaller than about 0.2 mm2 and a strength exceeding about 2000 N/mm2. The elevator preferably has a hoisting machine of substantially light weight relative to the nominal load.
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Citations
16 Claims
- 1. Elevator, preferably an elevator without machine room, in which elevator a hoisting machine engages a set of hoisting ropes via a traction sheave, said set of hoisting ropes comprising hoisting ropes of substantially circular cross-section, said ropes having a load-bearing part twisted from steel wires of circular and/or non-circular cross-section, and in which elevator the hoisting ropes support a counterweight and an elevator car moving on their tracks, characterized in that the cross-sectional area of the steel wires of the hoisting ropes is larger than about 0.015 mm2 and smaller than about 0.2 mm2, and that the steel wires of the hoisting ropes have a strength exceeding about 2000 N/mm2.
Specification