Implements or apparatus for applying pushing or pulling force – Apparatus for hauling or hoisting load – including driven... – Device includes rotatably driven – cable contacting drum
Reexamination Certificate
2005-07-27
2008-08-26
Marcelo, Emmanuel M (Department: 3654)
Implements or apparatus for applying pushing or pulling force
Apparatus for hauling or hoisting load, including driven...
Device includes rotatably driven, cable contacting drum
C254S286000, C212S274000
Reexamination Certificate
active
07416169
ABSTRACT:
The invention proposes a hoisting-cable drive for a mobile crane, which hoisting-cable drive uses a single bottom-hook block (15) instead of a known double bottom-hook block. However, to prevent this single bottom-hook block (15) from tilting in the two cable lines (9, 10), for example due to possible variations in the elongation of the two cable drives, the hoisting-cable drive according to the invention comprises a kinematic force equilibrium device (17, 21), which can equalize such differences. To this effect, another embodiment of the hoisting-cable drive according to the invention uses a hoisting-cable load pickup (21) within each cable line arrangement so that the rotary speed of the winches (7, 8) can be varied, taking into account any load differences in the individual hoisting-cable lines (9, 10). Furthermore, the invention also proposes that the rotary speed of the winches (7, 8) be adjusted, taking into account the geometric winch states and crane states.
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International Search Report for PCT/EP2005/008157 dated Nov. 7, 2005 and Written Opinion of the International Searching Authority.
Beckmann Axel
Noeske Ingo
Weckbecker Alfons
Marcelo Emmanuel M
Simpson & Simpson PLLC
Terex Demag GmbH
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