Electric elevator car driving device

Details Electric elevator car driving device Electric elevator car driving device

1982-03-02

1984-03-06

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

340 19R, B66B 100

Patent

active

044348738

ABSTRACT:
An electric elevator car drive has a sheave having grooves lines with non-metallic linings, and a controller which stops the elevator car when the linings are damaged. The grooves of the sheave have a plurality of metallic projections projecting thereinto which are normally covered by the non-metallic layers but which come into secure engagement with the cable when the layers are damaged. A fault detector detects the damage done to the layers, and, when damage to the layers are detected, the controller stops the elevator car at the nearest floor at which it can be stopped safely without damage to the cables suspending the elevator car.

REFERENCES:
patent: 3677370 (1972-07-01), Devine
patent: 4263578 (1981-04-01), Fukuhara et al.

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