Elevator system having a drive sheave with rigid but circumferen

Elevator – industrial lift truck – or stationary lift for vehicle – Stationary lift for roadway vehicle or required component... – Having specific drive means for support

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Details

742303, 742305, 242155BW, 254190R, B66B 1108

Patent

active

040131424

ABSTRACT:
An elevator system including an elevator car, a counterweight, cables interconnecting the elevator car and counterweight, and a traction drive which includes a drive sheave over which the cables pass. The drive sheave has rigid but circumferentially compliant grooves for the cables. The cable grooves are defined by a plurality of circumferentially spaced sector or segment members. The sector members are connected to the hub portion of the drive sheave with a compliant arrangement which permits a predetermined independent circumferential deflection of each sector member in response to friction forces between the cables and groove surfaces produced by changes in the length of the cables as they pass over the drive sheave.

REFERENCES:
patent: 432701 (1890-07-01), Grimm
patent: 3279762 (1966-10-01), Bruns
patent: 3838752 (1974-10-01), Berkovitz

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