Communications: electrical – Condition responsive indicating system – With particular coupling link
Patent
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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Chambers Donald A.
Curry John R.
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