The invention relates to a method for electrodynamically braking a rail vehicle that is provided with a drive unit (6). According to the inventive method, acceleration (a.sub.1st) of said rail vehicle is regulated according to the speed (v) thereof.

The invention relates to a method for monitoring the condition of turbines using their coasting time. The aim of the invention is to ensure that the monitoring process is as sensitive as possible with low resource requirements. To achieve this, the measured coasting time (t.sub.measured) is corrected by a correction member, in which the temperature of the medium (T.sub.medium) in the turbine that has likewise been measured, is taken into consideration and compared with a reference value.

Apparatus and process for removing surface regions of a component. The prior art involves removing surface regions of a metallic component by means of electrochemical processes. The electrochemical process is accelerated by the use of a current pulse generator.

An attachment device for a housing is provided which is suitable for snapping onto a hat rail which is attached to a plate, and allows screw attachment to a plate. The housing base has a bevelled area on one side of a snap-action device and, in this area, screw eyelets are intgrated in a spacer which is arranged resiliently on the housing base. Said spacer is supported on the plate when screwed together.

A liquid ring pump including at least one drive unit is described, having a drive shaft, a working space housing with an impeller rotating in it and axially freely movable on the drive shaft, and a disk cam with passages in the region of a front face of the drive shaft for an exchange of operating fluid for venting. The passage for the exchange of operating fluid and the axial free mobility have the effect that the impeller adjusts itself during operation.

There is described an insulation displacement terminal connecting device with adjacent insulation displacement terminal connectors is created, its swivel joint levers forming a stepped separating plane. This allows an arrangement of the contact openings to be achieved with optimal space utilization, allowing a narrow structural form.

In a method for segmentation of a medical data set, the segmentation is implemented using markings, the markings being set in the generation of the data set.

A connecting element is provided which has integrated catches in the area of the engagement sections, so that after they are inserted into engagement grooves have a matching shape on the individual contactors, the catches are engaged on a housing contour. Due to this design, when the individual contactor is screwed onto a base plate, dislocation of the connecting elements and migration to the base plate is prevented.

A switching device including a movable contact member. The movable contact member produces an isolating distance and includes an integral semiconductor switching element.

An electromagnetic holding brake comprising a switchable electromagnet (4) for holding a movable sheet (6) in a predetermined position, wherein said brake further comprises a second fixated sheet (5) which is arranged substantially parallel to the movable sheet (6), such that said movable sheet (6) is clamped between the electromagnet (4) and the second sheet (5) when the current is switched on.