Safety system for hydraulically controlled hoisting apparatus

Details Safety system for hydraulically controlled hoisting apparatus Safety system for hydraulically controlled hoisting apparatus

1981-03-09

1983-10-25

Blix, Trygve M.

Traversing hoists

With haul-in line

B66C 1348

Patent

active

044113684

ABSTRACT:
In this device, with each jack there is associated a pressure detection system comprising two thresholds, the upper one corresponding to the maximum pressure permitted, this double detection making it possible to determine the change in the pressure during the carrying out of a movement, after passage of the first threshold.

REFERENCES:
patent: 3854593 (1974-12-01), Gross
patent: 3963127 (1976-06-01), Eriksson
patent: 4027772 (1977-06-01), Garber
patent: 4170308 (1979-10-01), Rogers

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