Rope speed monitoring assembly and method

Details Rope speed monitoring assembly and method Rope speed monitoring assembly and method

1997-12-22

1999-03-23

Nappi, Robert E.

Elevator, industrial lift truck, or stationary lift for vehicle

With monitoring, signalling, and indicating means

Monitors operational parameter

187391, B66B 134

Patent

active

058863087

ABSTRACT:
An elevator rope speed monitoring assembly is disclosed. The rope speed monitoring assembly includes a plurality of sensors that monitor the movement of the individual ropes. The sensors output a signal indicative of the speed of the movement of the ropes. A controller compares the relative movement of the ropes and generates a warning signal if a sufficient deviation between relative rope speeds is detected.

REFERENCES:
patent: 4145920 (1979-03-01), Yamagami
patent: 4218671 (1980-08-01), Lewis
patent: 4427940 (1984-01-01), Hirama et al.
patent: 4467895 (1984-08-01), Smith et al.
patent: 5070967 (1991-12-01), Katzy et al.
patent: 5637842 (1997-06-01), Yonemoto et al.

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