Telescoping system for crane jib and auxiliary jib
AssigneeManitowoc Crane Group France SAS
InventorDieter Stührwoldt
Life of this patent
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Abstract
A crane jib system having a main jib, an auxiliary jib, and a telescoping cylinder. The main jib is comprised of main telescoping portions and the auxiliary jib is attached to the main jib and comprises auxiliary telescoping portions. The telescoping cylinder has a first telescopic part locking unit disposed on a base portion of the telescoping cylinder. The first telescopic locking unit is adapted to selectively engage the main telescoping portions. A second telescopic part locking unit is disposed on the telescoping cylinder above the first telescopic part locking unit. The second telescopic part locking unit is adapted to selectively engage the auxiliary telescoping portions.
Claims20
A crane jib system comprising:
- a main jib comprised of main telescoping portions;
- an auxiliary jib detachably attached to the main jib, the auxiliary jib comprised of auxiliary telescoping portions;
- a telescoping cylinder having a first telescopic part locking unit disposed on a base portion of the telescoping cylinder, the first telescopic part locking unit adapted to selectively engage the main telescoping portions, and a second telescopic part locking unit disposed on the telescoping cylinder above the first telescopic part locking unit, the second telescopic part locking unit adapted to selectively engage the auxiliary telescoping portions.
A crane jib telescoping system for a telescopic crane jib having a telescopic main jib comprised of main telescoping portions and a telescopic auxiliary jib detachably attached to the main jib compromised of auxiliary telescoping portions, the crane jib telescoping system comprising:
- a telescoping cylinder having a first telescopic part locking unit disposed on a base portion of the telescoping cylinder, the first telescopic part locking unit adapted to selectively engage the main telescoping portions, and a second telescopic part locking unit disposed on the telescoping cylinder above the first telescopic part locking unit, the second telescopic part locking unit adapted to selectively engage the auxiliary telescoping portions.
Dependencies are inferred from the claim text.