Abstract: A manually operated press comprising an actuating member coupled to a shaft, wherein an actuation of the actuating member is converted into a stroke movement of a press ram coupled to the shaft, and hence also into a change in a relative position of the press ram. The press furthermore comprises a reset mechanism for resetting the actuating member, which reset mechanism counteracts the actuation of the actuating member and causes a return movement of the press ram opposite the stroke movement. The reset mechanism comprises a spiral spring.

Abstract: A spindle drive having a spindle, a spindle nut which is arranged on the spindle, a housing which surrounds the spindle nut, and an overload clutch which is arranged in the housing. The spindle nut and the housing are connected to one another via the overload clutch. The overload clutch is set up to disconnect the spindle nut from the housing in a torque-free manner if a defined overload torque which acts between the spindle nut and the housing is exceeded.

Abstract: A movable guard for safeguarding a machine, comprising: a protective cover for covering a working area of the machine; a counterweight; a connecting element for connecting the protective cover to the counterweight; a deflection element, which is configured to deflect the connecting element in such a way that the protective cover and the counterweight are movable in mutually opposite directions; and a drive, which acts on the counterweight in order to drive the counterweight.

Abstract: A press including a drive train having a motor and a press ram, and a housing having a first base plate, a second base plate and at least three columns arranged therebetween. The columns connect the two base plates to one another and keep them spaced apart. A first opening is arranged in the first base plate and a second opening is arranged in the second base plate. At least a part of the motor is arranged on a first side of the first base plate facing away from the columns and at least a part of the press ram is arranged on a second side of the second base plate facing away from the columns. The motor and the press ram are interconnected through the first and second openings.

Abstract: A dosing device for demand-dosing a liquid includes a primary container, a point of release for releasing the liquid, a main liquid channel between the primary container and the point of release and a vented secondary container, wherein the secondary container is coupled to the main liquid channel at a branch point, wherein the secondary container and the main liquid channel are designed such that the main liquid channel preferably fills with the liquid before the secondary container. The dosing device further includes a liquid valve between the primary container and the branch point, a sensor for measuring the filling level in the secondary container and finally means for opening the valve responsive to a predetermined filling level in the secondary container.

Abstract: A manually operated press has an actuating member, the movement of which being translated into a stroke movement of a press ram. A stroke stop is provided for inhibiting an undesired stroke movement of the press ram. The stroke stop comprises a first sensor for detecting the stroke movement of the press ram as well as a clutch. The clutch is actuated under the control of signals of the first sensor and is adapted to inhibit a transmission of force between the actuating member and the press ram.

Abstract: An impact-induced pulse sensor comprises a housing having a longitudinal axis and a guiding element arranged on the housing. A sensor element is adapted to be displaced within the housing along the guiding element when an essentially pulse-shaped impact of a given duration is exerted on the housing. The sensor element is displaced with a predetermined speed and along a predetermined distance. The guiding element is configured such as to affect the speed. The sensor element is made of a magnetic material. A pickup element is rigidly connected to the housing for magnetically generating a measuring signal derived from the displacing of the sensor element caused by the impact. The sensor element, when displaced, generates in the pickup element a measuring voltage depending from the distance. The guiding element affects the speed such that for impacts with like pulse areas the measuring voltage vs distance is independent from the duration of the pulse-shaped impact.

Abstract: A manually operable press comprises a manually pivotable actuating lever for effecting a forward press stroke and a return stroke of a press slide. A mechanical return stroke interlock inhibits a return movement of the press before the press slide has come to a lower end position of the press stroke. A cam plate within said return stroke interlock is connected for being pivoted together with the actuating lever. The cam plate has a groove-shaped guide cam provided with a plurality of lock protrusions. A spring-biased lock pin runs along the guide cam and is adapted to run freely along the guide ram in an operational direction but is inhibited by the lock protrusions within the guide cam from running in a direction opposite the operational direction. An opening each is provided in the guide cam at the lock protrusions. Unlocking pins are provided in each of the openings.

Abstract: A method is described for operating an electric press which comprises an electrically actuated press ram, at least one displacement sensor for sensing positions of the displacement of the press ram during its working stroke, at least one force sensor for sensing compressive force applied by the press ram during the working stroke onto workpieces to be processed, and a control system which controls the working stroke in terms of displacement and compressive force. Parameters which indicate a successful course or completion of the pressing operation are dynamically adapted as a function of the profile of the compressive force versus the displacement of the press ram.

Abstract: A press has a press ram actuated by a drive apparatus and a dosing system to be actuated by the drive apparatus for lubricating at least the drive apparatus.

Abstract: A fail-safe circuit (10) comprises a storage battery (11) for electrical charges as well as a first charge path (12) which optionally connects the storage battery (11) to a first potential (UL). A second charge path (14) and a third charge path (15) optionally connect the storage battery (11) with a second or third potential (UE1, UE2). The first and second switching devices (16, 17), which operate as function of the first and second switching events (TA, TB), each comprise a first and second switching contact (A1, B1) in the first charge path (12) and a second switching contact (A2, B2) in the second and third charge path (14, 15). The actuation coils (LC, LD) of the third and fourth switching devices (18, 19) are in the second and third charge path (14, 15) and each have a first switching contact (C1, D1) in the first charging path (12) and a second contact (C2, C2', D2, D2').

Abstract: A method and a device serve for measuring fluidic or calorimetric parameters, for example the velocity of flow, and comprise the steps of heating up a sensor element arranged in a measuring environment, to a temperature higher than the surrounding temperature of the measuring environment, and deriving the parameter from the heat transmission between the measuring environment and the sensor element. In order to permit measurements the result of which is systematically independent of the absolute value of the heating power in the sensor element, two measurements are carried out successively at different temperatures, in the stationary condition. One determines the heating power at both these operating conditions and derives therefrom the parameter to be measured (FIG. 7).

Abstract: A sensor, preferably one of sub-miniature design, serves for measuring an acceleration (b). For this purpose, an electric signal representative of the acceleration (b) to be measured is generated by a sensor arrangement and evaluated as measured value. The sensor arrangement produces a predetermined logic signal when an acceleration threshold value is exceeded. In order to ensure high detection security and to obtain a computer-compatible signal, with the aid of an arrangement of small dimensions, one makes use of a plurality of sensors responding at different acceleration threshold values. The sensors are, preferably, designed as unilaterally fixed elastic tongues. The tongues are differently designed, with respect to their spring-and-mass properties, in order to provide different acceleration threshold values. They are arranged on a common substrate board and connected to a digital evaluation unit.

Abstract: A press has a press ram actuated by a drive apparatus and a dosing system to be actuated by the drive apparatus for lubricating at least the drive apparatus.