Emergency stop mechanism

Details Emergency stop mechanism Emergency stop mechanism

1981-03-11

1983-11-22

Love, John J.

Conveyors: power-driven

Conveying apparatus entirely supported by mobile ground...

Conveyor shiftably mounted on vehicle

B65G 4100

Patent

active

044163665

ABSTRACT:
An emergency stop mechanism for a lifting device capable of moving a load along a predetermined path against and with the force of gravity using a winch-operated primary cable, and wherein the primary cable accomplishes a lifting function by pulling the load in the direction of increased potential energy. The emergency stop mechanism comprises a secondary cable suspended stationary and parallel to the path of movement of the load. A braking device fastened to the load is actuated by a decrease in tension in the primary cable below a predetermined minimum amount of tension and responds to such decrease by gripping the secondary cable.

REFERENCES:
patent: 313451 (1885-03-01), Rogers
patent: 718328 (1903-01-01), Donohoe
patent: 1043323 (1912-11-01), Lester
patent: 1244136 (1917-10-01), Segerdahl
patent: 1412624 (1922-04-01), Lundgren
patent: 2489632 (1949-11-01), Frieder
patent: 3273671 (1966-09-01), Vrana
patent: 3386530 (1968-06-01), Thompson
patent: 3861650 (1975-01-01), Jackson
patent: 3979797 (1976-09-01), Stember
patent: 4000805 (1977-01-01), Hadler
patent: 4106753 (1978-08-01), Cavalieri et al.

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