Abstract: A position measuring system, especially for hydraulic valve, having a pressure tube to accommodate an armature is provided, whereby the pressure tube is manufactured by deep-drawing. As a result, a cost-effective manufacturing process can be employed for the pressure tube. The pressure tube can be firmly attached to a valve housing by means of a holding element and, optionally, an attachment flange.

Abstract: A position measuring system, especially for hydraulic valve, having a pressure tube to accommodate an armature is provided, whereby the pressure tube is manufactured by deep-drawing. As a result, a cost-effective manufacturing process can be employed for the pressure tube. The pressure tube can be firmly attached to a valve housing by means of a holding element and, optionally, an attachment flange.

Abstract: A force measuring apparatus comprises has a force-transmitting component, that holds a strain measuring element with a carrier element and a displacement transducer. The carrier element has two fixing sections at a predefined distance from each other in a direction of the strain with which it is fixed to the component. Furthermore, the carrier element has a strain section, which is provided between the fixing sections and which has a shorter length in the direction of the strain than the distance between the fixing sections, and which has a smaller cross section than the remaining carrier element. The displacement transducer is connected to the strain section in order to register the strain of the strain section.

Abstract: A force sensor has a cylindrically shaped housing which is elastically deformable by a force acting on it perpendicularly to its center axis. The housing has a hollow space. A measuring transducer device is situated in the hollow space, by which the deformation of the housing is able to be recorded. The measuring transducer device has a plate-shaped support plate on whose surface an expansion measurement transducer is fastened. The support plate is fastened in the hollow space in such a way that a deformation of the housing is transferred to the support plate.

Abstract: There is disclosed a manually operated electric control device wherein a control lever is mounted by means of a universal joint type pivotable joint. Said control device has two axes which can be pivoted in relation to each other. One axis is formed by a bearing bush in which two bearing sections of the pivotable joint are guided. Bearing tappets are arranged on the bearing sections via which the control lever can be pivoted about another axis.

Abstract: A force measuring apparatus comprises a force-transmitting component, on which a strain measuring element is held, which comprises a carrier element and a displacement transducer. The carrier element has two fixing sections at a predefined distance from each other in the direction of the strain with which it is fixed to the component. Furthermore, the carrier element has a strain section, which is provided between the fixing sections and which has a shorter length in the direction of the strain than the distance between the fixing sections and which has a smaller cross section than the remaining carrier element. The displacement transducer is connected to the strain section in order to register the strain of the strain section.

Abstract: A pulsation damper for hydraulic circuits has a housing including a bottom, a casing, and a cover, a damper chamber which is sealed from outside and provided with supply and discharge means for a pressure medium, the housing being composed of two parts so that the bottom and the cover are connected with one another to form a single central element, while the casing peripherally surrounds the central element, the central element, and means forming force-free connecting points between the central element and the cover.

Abstract: An arrangement for mechanical measurement and for regulation of a pulling force of a tractor, has a bending-elastic element whose bending is sensed by a sensing device which acts on a lifting device for a three-point linkage of the tractor, wherein the bending-elastic element is formed as a pin which is hollow and supports one link of the linkage between two housing-fixed bearing points, and the sensing device has a gauge stick which extends inside the pin substantially between both housing-fixed bearing points.

Abstract: A hydraulic control arrangement for actuating a lifting mechanism of an agricultural machine has a hydraulic motor arranged to lift and lower at least one member of a lifting mechanism, a hydraulic pressure medium source, a directional control valve arranged to control the hydraulic motor, a structural element having a bending elasticity arranged so that forces transmitted from the lifting mechanism member in a machine housing are at least partially transmitted via the structural element and the latter is bent, and a hydromechanical transformer having two parts movable relative to one another and a hydraulic control circuit for controlling the directional control valve and arranged so that bending of the structural element is used by the transformer as an adjusting member, wherein the structural element is directly formed as these parts movable relative to one another and influencing in a pressure medium streams through the transformer, and the parts include a first part which is hollow, has bending elasticit

Abstract: An apparatus for continuously cleaning grossly soiled products of plastic material, such as sheets, bands, sacks or the like and for preparing the material for subsequent re-use, comprising an elongated container having at least one downwardly extended funnel-shaped portion closed by a valve, means for feeding soiled comminuted plastic material in the region of one end wall into the container in which a bath of washing solution is maintained, a partition adjacent the other end wall extending into the bath and dividing the interior of the container into a washing zone and a discharge zone, communicating with each other adjacent the bottom of the container, means for agitating the working solution and the comminuted plastic material in the washing zone, and a sieve conveyor for removing the comminuted and cleaned plastic material from the discharge zone.

Abstract: A continuous process for cleaning and preparing grossly soiled products of plastic material, such as sheets, bands, sacks or the like for subsequent re-use, in which the plastic material is comminuted after removing rough foreign objects therefrom, whereafter the comminuted plastic material is fed into a washing solution having a greater specific weight than the plastic material and subjected together with the washing solution in a washing zone to turbulence, transferred to a turbulence-free zone containing washing solution by passage under a submerged edge of a partition submerged in the washing solution and separating the washing zone from the turbulence--free zone, and thereafter subjected first to mechanical and then to a thermal drying operation.