Abstract: A mobile concrete pump comprising a structural frame (14) mounted on the undercarriage (10) of a truck chassis (12), a boom stand (22) that is provided on the structural frame (14) and that is rotatable about a vertical axis (20) and a concrete distribution boom (24) configured in the form of multi-arm articulated boom (24). The concrete distributing boom consisting, for example, of six arms, which arms can rotate with respect to one another. In order to make possible the use of a distributing boom with a longer reach, a trailer (32) having its own undercarriage (34) is provided, said trailer being connected to the truck undercarriage (10) by a coupling member (36) in the transport condition. The trailer (32) has a pivot member (40) rotatable about a vertical axis (38) for receiving an arm set (42) that projects beyond the rear end of the truck undercarriage (10) in the transport condition.

Abstract: A mobile concrete pump comprising at least five mast arms (1 to 7) which are pivotable relative to each other about horizontal rotation axes (B to G). The first respective mast arm is hinged to a mast block (22) so as to be pivotable about a horizontal rotation axis (A), said mast block being rotatable about a vertical axis (20), while one end of the last mast arm has no joint. In order to be able to add other mast arms in a modular manner, a first Z-type folding group comprising the last three mast arms, a first coil-type folding group comprising the penultimate, third to last and fourth to last mast arm, and a second Z-type folding group comprising the third to last, fourth to last, and fifth to last mast arm are provided in a preferred embodiment.

Abstract: A mobile concrete pump comprising at least five mast arms (1 to 7) which are pivotable relative to each other about horizontal rotation axes (B to G). The first respective mast arm is hinged to a mast block (22) so as to be pivotable about a horizontal rotation axis (A), said mast block being rotatable about a vertical axis (20), while one end of the last mast arm has no joint. In order to be able to add other mast arms in a modular manner, a first Z-type folding group comprising the last three mast arms, a first coil-type folding group comprising the penultimate, third to last and fourth to last mast arm, and a second Z-type folding group comprising the third to last, fourth to last, and fifth to last mast arm are provided in a preferred embodiment.

Abstract: A mobile concrete pump comprising a structural frame (14) mounted on the undercarriage (10) of a truck chassis (12), a boom stand (22) that is provided on the structural frame (14) and that is rotatable about a vertical axis (20) and a concrete distribution boom (24) configured in the form of multi-arm articulated boom (24). The concrete distributing boom consisting, for example, of six arms, has a first boom arm (1) with a first articulation linkage (A), which rotates with respect to the tabernacle (22), in addition to other boom arms (2 to 6) arranged with the articulation linkages (B to F), which arms can rotate with respect to one another. In order to make possible the use of a distributing boom with a longer reach, a trailer (32) having its own undercarriage (34) is provided, said trailer being connected to the truck undercarriage (10) by a coupling member (36) in the transport condition.

Abstract: The invention relates to a mobile working machine, particularly a mobile concrete pump, comprising a device for monitoring the stability thereof when in operation. The working machine comprises a chassis (10), which contains a supporting structure with two front and two rear support struts (20). The support struts can be extended out of a transporting position and into at least one supporting position and each can be supported on a surface (28) by a telescopic supporting jack or foot (26). The working machine additionally comprises a working boom (14), which can be extended out of a transporting position and into working positions that project beyond the chassis, which can rotate about a vertical axis that is fixed with regard to the chassis, and which is preferably provided in the form of a concrete distributing boom. Measuring devices for determining the respective supporting load are arranged in the area of the supporting foot and their output signals are sent to a stability monitoring device.

Abstract: The invention relates to a mobile working machine, particularly a mobile concrete pump, comprising a device for monitoring the stability thereof when in operation. The working machine comprises a chassis (10), which contains a supporting structure with two front and two rear support struts (20). The support struts can be extended out of a transporting position and into at least one supporting position and each can be supported on a surface (28) by a telescopic supporting jack or foot (26). The working machine additionally comprises a working boom (14), which can be extended out of a transporting position and into working positions that project beyond the chassis, which can rotate about a vertical axis that is fixed with regard to the chassis, and which is preferably provided in the form of a concrete distributing boom. Measuring devices for determining the respective supporting load are arranged in the area of the supporting foot and their output signals are sent to a stability monitoring device.

Abstract: The invention concerns a five-arm concrete-distribution rig (20) mounted on a vehicle. Arms (1, 2 and 3) can be folded together by pivoting in opposite directions about hinged joints (B and C), which are capable of pivoting through approximately 180.degree., to form a "Z". In order to make it possible to supply concrete through several hoses in parallel, to upper stories and over obstacles, the invention proposes that arms (3, 4 and 5) can be folded together by pivoting in the same direction about joints (D and E), which are capable of pivoting through approximately 270.degree., to bring them up against arms (2 and 3) in the vicinity of hinged joint (C).

Abstract: The invention is concerned with an injection molding apparatus in which thermoplastic material mixed with an expanding agent is kept in a plastic state below the reaction temperature of the agent and is passed generally continuously through an inter-connecting passage to a transfer cylinder; by flowing through the passage, the mass is heated above the reaction temperature and the built-up pressure prevents foaming of the thermoplastic until it is injected into a mold.