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
1998-03-19
2000-07-25
Matecki, Katherine A.
Implements or apparatus for applying pushing or pulling force
Apparatus for hauling or hoisting load, including driven...
Device includes rotatably driven, cable contacting drum
188106P, 188 70R, 254267, 254361, 254377, 254379, 303 2, 303 3, 212284, B66D 526, B66D 158, B66D 502
Patent
active
060927895
ABSTRACT:
A boom hoist system for supporting and adjusting the position of a lifting crane gantry is provided including a drum, a drive system, and first and second braking systems for selectively stopping rotation of the drum. The boom hoist system operates independently from crane mechanical works and the first and second braking systems may include sensors for automatically engaging when specified conditions occur in order to prevent a hoisted gantry from falling uncontrollably in the event of a hoist system malfunction or failure.
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Christopher Patrick
Juneau Daniel R.
Schellstede Herman J.
Hugo Nev Corporation
Joint Venture Operations, Inc.
Matecki Katherine A.
Shanahan Michael E.
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