Patent ID: 9695014
Date: 2017-07-04
CPC Classifications: B66B,D07B

Claim:
1. An elevator having a car, a counterweight, a suspension coupling the car and the counterweight, a wheel contacted and at least partially looped by the suspension, and at least one drive for driving the car, the counterweight and the suspension, the elevator being arranged with the car, the counterweight, the suspension and the drive in a common shaft, comprising: the suspension having a cross section ratio of a width to a height being in a range of between one and three; the suspension extending longitudinally with a tie beam arrangement and a shell which encases the tie beam arrangement and forms an outer surface that contacts the wheel; the wheel having a flute in which the suspension is at least partially received, and a flute base of the flute, which is contacted by the suspension and is formed substantially planar, wherein said flute has a lateral guide region and a lateral inlet region, said guide region extending between said inlet region and said base, said guide region widening in a direction of said inlet region to form air gap between said guide region and a majority of a height of the suspension when unloaded, the suspension being widened under a loading force whereby the suspension is substantially adapted to said widened guide region closing said air gap, and wherein said guide region has a guide region radius larger than a suspension radius of the suspension when unloaded, the suspension being ovalized under the loading force whereby the suspension is substantially adapted to said guide region radius; and said shell is coated on at least a portion of said outer surface, said coating selectively having at least one of a friction-reducing, a friction-increasing and a wear-detecting effect when contacting the wheel.