Patent ID: 9446931
Filing Date: 2016-09-20
CPC Classification: B66B,D07B,Y10T

Claim Text:
1. An elevator, comprising: an elevator car; a traction sheave that comprises a plurality of grooves; a hoisting machine configured to drive the traction sheave; and a plurality of hoisting ropes configured to interact with the traction sheave to move the elevator car; wherein an overall contact between the traction sheave and the hoisting ropes exceeds a contact angle of 180°, wherein a diameter of the traction sheave is less than 320 mm, wherein each respective hoisting rope of the hoisting ropes comprises steel wires twisted together to form strands, wherein the strands of each respective hoisting rope are twisted together to form the respective hoisting rope, wherein a thickness of each respective hoisting rope is less than 8 mm, wherein the hoisting ropes have a substantially round cross-section, wherein each of the hoisting ropes further comprises an individual exterior coating, wherein an average of wire thicknesses of the steel wires of the hoisting ropes is greater than or equal to 0.1 mm and less than or equal to 0.4 mm, and wherein a strength of the steel wires of the hoisting ropes is greater than 2,300 N/mm