Abstract: An unlocking device for a control device (10) includes an actuating magnet (12) in a coil base (14) and/or in housing elements of the actuating magnet. An actuating element (16) can be displaced along a first axis (20) and releases, in an actuation position, a swivel path (22) for a control unit (24) arranged to swivel about a second axis (26). The control unit (24) has a locking element (30) which, when unlocked by the actuating element (16) via the control element (24), releases the trajectory (32) for the control device (10) to be actuated. The unlocking device also has a swiveling lever (34) guided in a housing part (28) to swivel. The second axis (26) is parallel to the first axis (20). The swiveling lever (34), at its free end and when the actuating magnet (12) is not actuated, contacts the actuating element (16). The locking element (30) is disposed on the other end of the swiveling lever (34) and maintains the control device (10) in the locked position.

Abstract: The invention relates to an actuating device, particularly for actuating valves that can be connected externally, comprising a housing (10) and a coil body (12) arranged therein and having a coil winding (14), which at least partially encloses a coil tube (16), having a pole core (20) connected at the free end thereof, further comprising an armature (22) that is guided in a longitudinally displaceable manner at least in the pole tube (16) within an armature chamber (24) and interacts with an actuating pan (26) for actuating the respective valve part, wherein the pole tube (16) is designed as a receiving sleeve for the armature (22), said sleeve being fixed with the free end region thereof to a fixed bearing point, and wherein the fixed bearing point is formed by two support parts (118,124) of the pole core (20) that delimit a receiving gap between them, in which the free end region of the receiving sleeve is fixed in a clamped manner.

Abstract: The invention relates to an actuating device, particularly an actuating magnet, for actuating valves. In order to improve the sealing action of an actuating magnet, the invention provides that a contacting plug insert (48) has a seating surface (54) against which an annular sealing part (52) rests and which extends in the form of a groove inside the plug insert (48). The groove depth is selected so that, when in an unpressed state, approximately half of the sealing part (52) is accommodated inside the groove (56). When the groove (56) is fitted with the sealing part (52), it is completely filled whereby resulting in a projection that sealingly closes the gap (58) arising between a plug plate (40) and an outer peripheral surface (50) of the housing (18).

Abstract: The invention relates to an actuating device, particularly for actuating externally connected valves, comprising a housing (10) and a coil member (12). Said coil member (12) is disposed in the housing (10), is provided with a coil winding (14), and at least partially encompasses a pole tube (16). A pole core (20) adjoins one free end of said pole tube (16). The actuating device further comprises at least one armature (22) which is guided within an armature chamber (24) at least in the pole tube (16) and cooperates with a part for actuating the respective valve. In order to dispense with the need for an independent lift stop used in prior art, the pole tube (16) is configured like a receiving jacket for the armature (22), one free end of said receiving jacket being provided with an inward-facing folded edge so as to foam a stop area (38) for the armature (22).

Abstract: A device (5) measures capacity, and includes an electrode arrangement with a plurality of electrodes (E1, E2, . . . , En) which are adjacently and/or successively arranged on a carrier (6). An intrinsic measuring device (8) measures the capacitance between a first electrode (E2), in the form of a measuring electrode, and a second electrode (E1), in the form of a counter-electrode. A controllable switching device (7) connects the electrodes (E1, E2, . . . , En), in the form of first and second electrodes (E2, E1), to the measuring device (8) in such a way that they can be switched in a pre-determinable manner. Each electrode (E1, E2, . . . , En) of the electrode arrangement can be switched in a controlled, alternate manner by the switching device (7), in the form of a measuring electrode, and respectively at least one of the other electrodes (E1, E2, . . . , En), in the form of a counter-electrode, can be switched to a pre-determinable reference potential.

Abstract: A switchgear, especially for actuating valves, includes a housing (18) and a coil body (10) disposed in the housing. A switch element is guided in the coil body. The coil body is provided with a winding (14) of a conductor (16) that is connected to a plug connector (22) via contact elements (20). At least some sections of the housing (18) and of the plug connector (22) are enclosed by a plastic compound (24). Sealing devices (40) seal off the interior (42) of the switchgear from the surroundings (44). At least one of the sealing devices (40) is configured as a sealing web (48) of a meltable material. The sealing web (48) is disposed on the bottom face (50) of a plug plate (26) of the plug connector (22) which faces the housing (18).

Abstract: A device (1) for determining the qualify of a medium, particularly of a lubricant and/or cutting oil, includes a number of sensors (3, 4, 5, 6, 7) that emit electric output signals according to the respective sensor-specific input variables. One sensor is a temperature sensor (7) that emits an output signal, which is essentially only dependent on the temperature (T) of the medium and is essentially independent of, in particular, the quality of the medium. At least one other sensor (3, 4, 5, 6) emits an output signal that is dependent on both the quality of the medium as well as the temperature (T) of the medium. The sensors (3, 4, 5, 6, 7) are placed on a shared substrate (2) that can be immersed in the medium. An associated process also determines the quality of a medium.

Abstract: System determines the position of a control element of an electrically driven actuator. The actuator may be switched on by a controlled switch when a lower threshold value is reached and may be switched off when an upper threshold value is reached. An on-period and an off-period are determined as a function of the lower threshold value, the upper threshold value, and the electric switching behavior of the actuator depending on the position of the control element. From the on-period and the off-period, the position of the control element are determined from a comparison of the quotient of the on-period or off-period and the sum of the on-period and off-period, and from a comparison of the sum of the on-period and the off-period with corresponding stored reference data. The system includes accompanying circuitry for application of the process, and an accompanying device, in particular a hydraulic valve.

Abstract: A displacement sensor system for solenoid coils includes at least two primary coil windings arranged in line on a main coil body to form a primary winding. A secondary coil winding is arranged on top of each primary coil winding to form a secondary winding. This displacement sensor system is configured in such a way that it can be produced in an economical manner and with a reduced length.

Abstract: An electromagnet for actuating valves includes a sheath-like magnet housing encompassing a pole core forming a one-sided closure of the housing. The housing is connected to the pole core by an annular groove in its periphery, by an O-ring accommodated in the groove as a sealing element and by an annular groove in the magnet housing. The magnet housing forms bearing surfaces joined in positive fit to the inner walls of the annular groove and a sealing surface located on the O-ring.

Abstract: A device for emergency hand operation has switching magnets with an armature that can be moved in the pole pipe to a final position by the force of a spring assembly, and can be moved against the spring force to a second final position by a magnetic field excitation. The device has a tensional member which can be axially displaced and moved by a manual actuating device. A carrier interacts with the armature to move the carrier against the spring force and to the second final position. The armature, the pole core, the spring assembly, the tensional member and the actuating device are combined to form a prefabricated component which can be inserted into the pole pipe via its inner open end and which can be connected to the pole pipe.