Abstract: A valve for thick matter and method for actuating a valve for thick matter, wherein, in a first switching operation, a valve element is switched between a first switching state (A) and a second switching state (B) by a first volume of hydraulic fluid being supplied to a control cylinder, and, in a second switching operation, the valve element is switched between the second switching state (B) and a third switching state (C) by a second volume of hydraulic fluid being supplied to a control cylinder. The first and second volumes of hydraulic fluid are supplied to the control cylinder by displacement of a metering piston of a metering cylinder from a first end position to a second end position.

Abstract: The invention relates to a boom arm for mobile concrete pumps and to a mobile concrete pump. The boom arm, having a first and second end, wherein at least one elbowed section, in which the main bending loads which occur during proper use act as torsional loads, is provided between the first and the second end of the boom arm, is made from a fiber composite material, wherein beyond the elbowed region the height of the boom arm in cross-section is greater than the width of the boom arm in cross-section and in the elbowed region the width of the boom arm in cross-section is greater than or equal to the height of the boom arm in cross-section. A concrete pump with a placing boom, arranged on a substructure, comprising at least two boom arms, at least one of which is designed according to the invention.

Abstract: A boom system for a concrete-delivery device includes a plurality of booms which are pivotably interconnected. At least one of the booms has a recess along its length, the recess configured to at least partially receive an adjacent boom when the boom system. is in a retracted position. Side walls of the boom are extended to define the recess in the form of a channel. The recess may have a depth greater than or equal to a height of the adjacent boom so that the adjacent boom is received within the recess when the boom system is in the retracted position. Alternatively, the recess may have a depth less than a height of the adjacent boom so that the adjacent boom is only partially received in the recess when the boom system is in the retracted position.

Abstract: An extruder apparatus for the extrusion of a strand of building material for 3D printing of a structural part includes an extruder nozzle and at least one cover element. The extruder nozzle has a discharge opening for the discharge of the strand of building material out of the extruder apparatus. The at least one cover element is designed to cover at least a part of the discharge opening such that an opening cross section of at least one uncovered part of the discharge opening specifies a strand cross section of the discharged strand of building material.

Abstract: A printing method forms a continuous strand of building material for 3D printing of a structural part via a printing system. The printing system has a printing apparatus that dispenses building material out of the printing apparatus and shapes building material to form a strand of building material, and a discontinuous building material pump that discontinuously conveys building material for discontinuously dispensing conveyed building material out of the printing apparatus. The printing method includes the steps of: a) discontinuously conveying building material via the discontinuous building material pump and discontinuously dispensing conveyed building material out of the printing apparatus and shaping conveyed building material via the printing apparatus, and b) discontinuously moving the printing apparatus during the discontinuous conveying and the discontinuous dispensing such that the dispensed and shaped building material forms a continuous strand of building material.

Abstract: A method produces a part of a building. The part of a building has at least one first region and one second region, which adjoins the first region. In the first region, an installation structure is concealed by building material. The method includes the following steps: a) dispensing building material to produce the first region and providing the building material with a marking substance before, at the same time as, and/or after the dispensing operation, and b) dispensing building material to produce the second region.

Abstract: The invention relates to a boom arm for mobile concrete pumps and to a mobile concrete pump. The boom arm, having a first and second end, wherein at least one elbowed section, in which the main bending loads which occur during proper use act as torsional loads, is provided between the first and the second end of the boom arm, is made from a fiber composite material, wherein beyond the elbowed region the height of the boom arm in cross-section is greater than the width of the boom arm in cross-section and in the elbowed region the width of the boom arm in cross-section is greater than or equal to the height of the boom arm in cross-section. A concrete pump with a placing boom, arranged on a substructure, comprising at least two boom arms, at least one of which is designed according to the invention.

Abstract: A boom system for a concrete-delivery device includes a plurality of booms which are pivotably interconnected. At least one of the booms has a recess along its length, the recess configured to at least partially receive an adjacent boom when the boom system. is in a retracted position. Side walls of the boom are extended to define the recess in the form of a channel. The recess may have a depth greater than or equal to a height of the adjacent boom so that the adjacent boom is received within the recess when the boom system is in the retracted position. Alternatively, the recess may have a depth less than a height of the adjacent boom so that the adjacent boom is only partially received in the recess when the boom system is in the retracted position.

Abstract: Container for packing of liquid, pasty or solid substances or small parts with a cup made of plastic, which is liquid-tight and can be sealed with a sealing film made of plastic. The container has a cover with a stable, plastic edge part, which can be detached from the cup and attached liquid-tight to the upper edge of the container, on the surface of which sealing film can be welded on liquid-tight.

Abstract: A medication system with a medication tray includes a substantially rectangular tray sheet with individual receiving sites, which are separated from each other and run in rows. A plurality of containers of the medication system contain medications which are positioned in the receiving sites such that they are individually removable. Plastic film, which is provided with perforations along the outer contours of the containers, is sealed to the edges of the containers. The tray is a plastic injection-molded part. Each container is individually provided with a plastic film which is sealed to the edge of the container, and which originates from a single flexible plastic film provided with perforations along the outer contours of the containers, which has been welded only along the container edges. The non-welded part of the plastic film forms a foil mesh, which is removed by cutting through it in the area of the perforations.

Abstract: A medication system with a medication tray includes a substantially rectangular tray sheet with individual receiving sites, which are separated from each other and run in rows. A plurality of containers of the medication system contain medications which are positioned in the receiving sites such that they are individually removable. Plastic film, which is provided with perforations along the outer contours of the containers, is sealed to the edges of the containers. The tray is a plastic injection-moulded part. Each container is individually provided with a plastic film which is sealed to the edge of the container, and which originates from a single flexible plastic film provided with perforations along the outer contours of the containers, which has been welded only along the container edges. The non-welded part of the plastic film forms a foil mesh, which is removed by cutting through it in the area of the perforations.

Abstract: Container (1) for packing of liquid, pasty or solid substances or small parts with a cup (2) made of plastic, which is liquid-tight and can be sealed with a sealing film (8) made of plastic. The container (1) has a cover (3) with a stable, plastic edge part (6), which can be detached from the cup (2) and attached liquid-tight to the upper edge of the container (2), on the surface (6a) of which sealing film (8) can be welded on liquid-tight.