Method of reducing fretting of steel ropes and belts
AssigneesThyssenkrupp Elevator AG, thyssenkrupp AG
InventorRory Stephen Smith
Life of this patent
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Abstract
A load-bearing member includes a core including a first plurality of steel wires. Each of the first plurality of steel wires have a benign metallic layer disposed thereon and a low friction coating disposed over the benign metallic layer. A plurality of outer strands surrounds the core. The plurality of outer strands includes a second plurality of steel wires. Each of the second plurality of steel wires have a benign metallic layer disposed thereon. Each of the plurality of outer strands includes a plurality of outer strand inner wires surrounded by a plurality of outer strand outer wires and each of the outer strand inner wires includes a low friction coating.
Claims18
A load-bearing member, comprising:
- a core including a first plurality of steel wires, each of the first plurality of steel wires having a benign metallic layer disposed thereon, and a low friction coating disposed over the benign metallic layer;
- and
- a plurality of outer strands surrounding the core, the plurality of outer strands including a second plurality of steel wires, each of the second plurality of steel wires having a benign metallic layer disposed thereon;
- wherein each of the plurality of outer strands includes a plurality of outer strand inner wires surrounded by a plurality of outer strand outer wires, each of the outer strand inner wires including a low friction coating.
An elevator system, comprising:
- an elevator car;
- a load-bearing member including a core including a first plurality of steel wires, each of the first plurality of steel wires having a benign metallic layer disposed thereon, and a low friction coating disposed over the benign metallic layer;
- and
- a plurality of outer strands surrounding the core, the plurality of outer strands including a second plurality of steel wires, each of the second plurality of steel wires having a benign metallic layer disposed thereon;
- wherein each of the plurality of outer strands includes a plurality of outer strand inner wires surrounded by a plurality of outer strand outer wires, each of the outer strand inner wires including a low friction coating;
- a drive motor configured to displace the rope and move the car;
- one or more sheaves configured to guide the displacement of the rope;
- and
- a counterweight coupled to the rope and configured to counterbalance the weight of the car.
Dependencies are inferred from the claim text.