Traversing hoists – Adjustable to transport or nonuse position – Collapsible or foldable boom
Reexamination Certificate
2007-08-21
2007-08-21
Brahan, Thomas J. (Department: 3654)
Traversing hoists
Adjustable to transport or nonuse position
Collapsible or foldable boom
C212S168000, C212S238000, C212S261000
Reexamination Certificate
active
10922373
ABSTRACT:
The present invention relates to a mobile crane boom having a self-sufficient energy supply arranged on it for supplying hydraulic energy to at least one hydraulic load arranged on the mobile crane boom. The supply of the hydraulic load arranged on the mobile crane boom is therefore not carried out by means of a hydraulic unit arranged on the revolving superstructure of the crane, which provides the hydraulic energy to each hydraulic load via hoses, but by means of a hydraulic unit which is arranged in the upper reaches of the mobile crane boom or in the area of the linkage of any second boom section. By arranging the hydraulic unit directly on the boom, the hoses normally required for supplying the hydraulic loads can be eliminated.
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“International Search Report, Application No. PCT/EP2004/009367, date mailed Dec. 21, 2004”, 3 Pages.
Backes Bernd
Irsch Michael
Brahan Thomas J.
Schwegman, Lundberg, Woessner and Kluth P.A.
Terex-Demag GmbH & Co. KG
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