Abstract: The invention relates to an electrohydraulic monitoring device for a dual effect hydraulic cylinder in which certain operating pressures must be maintained. A pressure reduction valve is provided for setting said pressures, this pressure reduction valve being used to set a defined pressure (41) by adjusting the pretension of the valve spring (41). The valve spring is situated in a spring chamber (137) which is bordered by a regulating sleeve (46) on one side, in an axially moveable manner. Said regulating sleeve is displaceable between two end positions within a limited axial stroke area. The alternative switching positions of a micro-switch (117) are linked to these end positions. Two sensor chambers, each of which is connected to one of the pressure chambers of the cylinder in such a way that they communicate, are provided and are delimited by sensor pistons (106, 107) in order to determine the operating pressure that is being coupled into the hydraulic cylinder at a particular time.

Abstract: A device for integrally joining a metal block (11′) that can consist of a number of plates, by hard-soldering or brazing. The hard-solder provides a connection covering a large surface and with a minimal thickness in solder gaps (17j; j=1, 2, . . . , n−1) located between adjacent segment plates (12i; i=1, 2, . . . , n). At least one capillary solder inflow path (14) is provided. Said solder inflow path starts at a solder depot containing a supply of hard solder or braze material (42), which melts as the stack (11) of plates is heated. The melted solder material flows directly to the individual, also capillary solder gaps (17j; j=1, 2, . . . , n−1) via said solder inflow path, the solder gaps being provided between surfaces of the segment plates (12i) that face towards each other.