Elevator system

Details Elevator system Elevator system

1985-11-14

1986-11-04

Rolla, Joseph J.

Elevator, industrial lift truck, or stationary lift for vehicle

Stationary lift for roadway vehicle or required component...

Having specific drive means for support

254287, 254371, 254396, 226 24, 226174, B66B 1108

Patent

active

046206159

ABSTRACT:
Traction enhancement for a traction elevator system has an elevator car and counterweight connected by a plurality of wire ropes reeved about a drive sheave with a predetermined angle of wrap. An arcuate frame having a plurality of rollers has one end pivotally and adjustably fixed, while its other end biases the rollers against the ropes in the angle of wrap with a tension spring. Over travel of the elevator car releases the bias to allow the ropes to slip should the counterweight reach an end of its travel path.

REFERENCES:
patent: 1438674 (1922-12-01), Trumm
patent: 3294331 (1966-12-01), Wang et al.
patent: 3794233 (1974-02-01), Dykmans

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