Traversing hoists – With haul-in line
Patent
1993-08-06
1994-09-06
Huppert, Michael S.
Traversing hoists
With haul-in line
340436, 340942, 212149, B66C 1504
Patent
active
053437390
ABSTRACT:
A transmitter attached to the overhang of a hoisting crane that is movable over rails. The transmitter is operative to transmit signals to receivers also mounted on the hoisting crane. During movement of the crane, the signals may be blocked by objects that may come between the transmitter and receivers indicating a pending collision. The receivers upon detecting a blockage are operative to alert the operator of the unsafe condition and deactivate the gantry motors moving the crane.
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Brahan Thomas J.
Huppert Michael S.
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