Implements or apparatus for applying pushing or pulling force – Apparatus for hauling or hoisting load – including driven... – Device includes rotatably driven – cable contacting drum
Patent
1981-05-29
1983-08-16
Jillions, John M.
Implements or apparatus for applying pushing or pulling force
Apparatus for hauling or hoisting load, including driven...
Device includes rotatably driven, cable contacting drum
254355, 254356, 254361, 254379, B66D 108, B66D 506
Patent
active
043986986
ABSTRACT:
One or more freefall systems for a crane or the like is disclosed, which system includes a protective circuit that includes three separate switches that must be closed before the winch can be placed in its freefall mode. A mode switch in the cab must first be closed, a brake pedal must be depressed to close a second switch, and a third switch must be held closed by the operator during freefall.
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Crawford Steven C.
Feltman Thomas J.
Steuck Roger A.
FMC Corporation
Jillions John M.
Megley R. B.
Moore A. J.
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