Crane hoist safety deactivator

Details Crane hoist safety deactivator Crane hoist safety deactivator

1993-11-08

1995-06-27

Crosland, Donnie L.

Communications: electrical

Condition responsive indicating system

With particular coupling link

340673, 340685, 212276, 361 1, G08B 108, B66C 1318

Patent

active

054283442

ABSTRACT:
A safety apparatus for use on a hoisting crane used to hoist cargo from cargo transport trucks that detects hoisting such trucks and renders the hoisting mechanism inoperative. The safety apparatus includes sensors responsive to an unsafe condition in such trucks to generate a safety signal. A transmitter responsive to the safety signal transmits an operational signal to the hoisting crane that upon receiving and recognizing the operational signal renders the hoisting mechanism inoperative and alerts the crane operator of the unsafe condition.

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