Patent ID: 7478834

Claim:
A mobile concrete pump with a structural frame ( 14 ) mounted on a truck undercarriage ( 10 ) of a truck chassis ( 12 ), the structural frame ( 14 ) supportable upon the ground ( 18 ) when lifting of the truck undercarriage ( 10 ), with a boom stand ( 22 ) rotatable about a vertical axis ( 20 ) provided upon the structural frame ( 14 ) and with a concrete distribution boom ( 24 ) in the form of a multi-element articulated boom, including a first boom arm ( 1 ) pivotable relative to the boom stand ( 22 ) via a first articulation linkage (A) about a horizontal articulation axis, and further boom arms ( 2 through 4 ) pivotable relative to each other via articulation linkages (B-D) about horizontal articulation axes, said boom foldable between a transport configuration and an operating configuration, wherein when in said transport condition a part of said multi-element articulated boom extends beyond the back end of said truck undercarriage ( 10 ), a trailer ( 32 ) connectable with the truck undercarriage ( 10 ) via a coupling member ( 36 ) in the transport configuration on the road, which includes a pivot mount rotatable about a vertical axis for receiving the part of the multi-element articulated boom extending beyond the end of the truck undercarriage ( 10 ) in the configuration of travel on the road, which multi-element articulated boom is comprised of the first boom arm ( 1 ) and the remaining boom arms ( 2 through 4 ) oriented in their folded in position relative to the first boom arm, and which forms the coupling member ( 36 ).