Abstract: The present invention relates to a crane vessel and a method of lowering an object from such a crane vessel into the sea. The crane comprises a stationary pedestal, a crane housing that is adapted to slew relative to the pedestal about a vertical rotation axis and a boom, comprising an inner end which is connected pivotably about a horizontal pivot axis to the crane housing. A luffing device extends between the boom and the crane housing, adapted to position the boom and actuate the up-and-down movement of the boom.

Abstract: The toy vehicle with a chassis, on which a vertical shaft with a seat is rotatably arranged, wherein the shaft is rigidly connected to a cantilever arm, pivotally connected to which is an end section of a digger arm, which is provided with a handle and whose other end section is connected to a pivotable bucket arm, which carries a pivotable bucket, is characterised in that tensioned between the cantilever arm and the digger arm there is a spring device, which biases the digger arm into a raised position and is increasingly tensioned when the digger arm is lowered.

Abstract: A manipulator, preferably for the assembly of rotor blades of a wind power installation, has a receiving unit for the receiving of a rotor blade and a connection unit via which the manipulator is connected or connectable to the boom of a crane in a torque-rigid manner so that the position and/or alignment of a rotor blade received in the receiving unit relative to the boom can be fixed by the manipulator.

Abstract: A heavy duty hoist for use in lifting and transporting stacked concrete forms and the like has a main body with a vertically extending guideway which receives an operating slide. Rigid arms extend in opposite directions at the bottom of the body with pivot pins at their outer ends. A second pair of arms extend from the slide to the pivot pins and carry sleeves engageable with the pins for pivotal movement with vertical movement by the slide. Rigid outer sections of the second pair of arms depend from the inner sections and carry inwardly projecting lifting elements at their lower end portions for engagement beneath a stack of forms. The slide carries a pair of rollers above and below the inner end portion of each of the free end portions of the second pair of arms with slight longitudinal relative movement thus accommodated. A lifting device in the form of a simple eye-member is mounted on the slide.

Abstract: A rotator including a base frame for being attached to a lift mechanism; a rotating frame; a first latch member attached to the rotating frame; a second latch member attached to the rotating frame a spaced distance from the first latch member for coacting with the first latch member to securely attach a trailer chassis to the rotating frame; and axle structure rotatably attaching the rotating frame and the base frame to one another for allowing the rotating frame to rotate between a first position and a second position to rotate the trailer chassis between an upright position and an inverted position about an axis parallel to the longitudinal axis of the trailer chassis.

Abstract: An apparatus for mounting onto a lifting machine for gripping and lifting a highway barrier and the like, said apparatus comprising a body adapted to be mounted on to the lifting machine. A pair of clamping arms is pivotally and slidingly engaging the body and having mechanical advantage means pivotally engaging and extending between the body and clamping arms for releasably applying a gripping force to the barrier and to lift same. Locking means engaging the clamping arms is provided for successively locking the clamping arms in an open position to receive the barrier, unlocking the clamping arms in an operative position to apply the gripping force and thereafter locking the clamping arms in the open position for reuse upon release of the barrier.

Abstract: This invention is a tool apparatus operable to aid in assembling and disassembling of large, rotational sprinkler systems for crop irrigation purposes. The tool apparatus function is to present the tools and the structure for readily maneuvering the elements of the respective irrigation sprinkler system.