Abstract: The present invention relates to a process for preparing ammonium (meth-) acrylate, aqueous ammonium (meth-) acrylate solutions obtainable by such process, and (meth-) acrylic acid homopolymers or copolymers obtainable by polymerizing such ammonium (meth-) acrylate. The invention furthermore relates to a modular, relocatable bioconversion unit for manufacturing aqueous ammonium (meth-) acrylate solutions.

Abstract: A sliding cover for a salient-pole rotor of an electric machine for closing a groove formed between two adjacent salient poles of the salient-pole rotor, having a groove-closing wedge extending axially and in the peripheral direction, for closing the groove and supported on pole shoes of the adjacent salient poles, the groove-closing wedge having an inner side facing the groove and an outer side facing an air gap of the electric machine, and at least one bulkhead arranged on the groove-closing wedge and extending radially starting from the outer side of the groove-closing wedge, for reducing a power-loss-increasing axial flow along the sliding cover in the air gap of the electric machine.

Abstract: A valve unit comprises an operating piston for closing and opening a connection between a process pressure input line and a process pressure output line, at least one control line and at least one control chamber for controlling the operating piston. The operating piston has a closing ring which in the closed state of the connection sealingly abuts a valve seat of the valve housing (or the valve housing has a closing ring which in the closed state of the connection sealingly abuts against a valve seat of the operating piston). The valve seat consists of a softer and more elastic material than a circumferential sealing edge abutting said valve seat. An annular sealing element is present which comprises the valve seat. The sealing element has the shape of a truncated cone with an outwardly widening base.

Abstract: When acquiring detailed utilization information from imaging equipment in a cross-vendor approach, one or more sensors (16, 18, 22, 24) are positioned within a data security zone (14) in which an imaging procedure is performed. Sensor data is pre-processed on an isolated processing unit (20) to remove any sensitive information and keep a selection of features only. The resultant feature pattern is transmitted outside of the data security zone to a processing unit (28) where pattern recognition is performed on feature pattern to identify the type of imaging modality, scan, etc. being performed as well as to determine whether the scan is being performed according to schedule.

Abstract: A device of a blow-moulding apparatus for moulding hollow bodies, in particular a stretch blow-moulding machine, is disclosed. The device includes a housing block with a through-bore, at least one valve with a movable piston and with a valve chamber, a first channel which runs in the housing block and which connects the valve chamber to the through-bore, a second channel which connects the valve chamber to an external line, and a cover for fastening the valve to the housing block. The valve connects the first channel and the second channel to one another and separates them from one another. The second channel runs at least partially in the cover and/or at least one part of the valve chamber is arranged in the cover and surrounds the piston. The device is small and compact and the valves may be replaced in a simple manner.

Abstract: Method for actuating a valve unit, which has a process pressure inlet, a process pressure outlet and a valve chamber connecting the process pressure inlet to the process pressure outlet and a movable piston for closing and opening the connection between the process pressure inlet and the process pressure outlet. The piston is able to be subjected on a first side to a first control pressure and the piston is able to be subjected on a second side to a second control pressure. The piston is moved by means of the first control pressure and the second control pressure for the purpose of closing and opening the connection. In the operating state of the valve unit, the piston is permanently subjected to the first control pressure, wherein the piston is additionally subjected to the second control pressure for moving the piston in one direction and wherein a pressure which is higher than atmospheric pressure and lower than the second control pressure is used as the first control pressure.

Abstract: The present invention relates to an underwater VR headset (1) comprising a diving mask (10), which can be placed on a diver's head on the diver's face in a viewing direction (5), and an underwater display unit (20), wherein the underwater display unit (20) is arranged behind the diving mask (10) in the viewing direction (5) of the diver, wherein the underwater display unit (20) comprises a housing (22) and at least one VR display unit (25) arranged in the housing (22), wherein a virtual reality displayed by the VR display unit (25) can be perceived by the diver through the diving mask (10) and the housing (22), and wherein the housing (22) is gas-tight and liquid-tight. Moreover, the present invention relates to a diving mask (10) and an underwater display unit (20).

Abstract: A valve, in particular of an extrusion blow moulding machine or a stretch blow moulding machine for manufacturing hollow bodies, has a movable piston, a process fluid region and a compensation chamber. The piston has a free front face which faces the process fluid region with a circumferential outer sealing region. At least one connecting channel connects the process fluid region to the compensation chamber. The free front face of the piston has an elevation, which is surrounded by the outer sealing region. The elevation protrudes over the outer circumferential sealing region. The valve permits a rapid and precisely timed opening.

Abstract: A valve unit comprises an operating piston for closing and opening a connection between a process pressure input line and a process pressure output line, at least one control line and at least one control chamber for controlling the operating piston. The operating piston has a closing ring which in the closed state of the connection sealingly abuts a valve seat of the valve housing (or the valve housing has a closing ring which in the closed state of the connection sealingly abuts against a valve seat of the operating piston). The valve seat consists of a softer and more elastic material than a circumferential sealing edge abutting said valve seat. An annular sealing element is present which comprises the valve seat. The sealing element has the shape of a truncated cone with an outwardly widening base.

Abstract: A valve unit includes a valve housing having an input line and an output line or the process pressure as well as a process guide shaft, an operating piston for closing and opening a connection between the two lines, two control lines and two control chambers for controlling the operating piston. The operating piston has a closing ring which in the closed state of the connection sealingly abuts a valve seat of the valve housing and it has a diameter which corresponds to a guide diameter of a dynamic process seal. The valve seat includes a softer and more elastic material than the sealing edge. The valve unit has low axial forces, due to low sealing forces, thus makes a long service life with a high number of cycles of operation possible.

Abstract: Method for actuating a valve unit, which has a process pressure inlet, a process pressure outlet and a valve chamber connecting the process pressure inlet to the process pressure outlet and a movable piston for closing and opening the connection between the process pressure inlet and the process pressure outlet. The piston is able to be subjected on a first side to a first control pressure and the piston is able to be subjected on a second side to a second control pressure. The piston is moved by means of the first control pressure and the second control pressure for the purpose of closing and opening the connection. In the operating state of the valve unit, the piston is permanently subjected to the first control pressure, wherein the piston is additionally subjected to the second control pressure for moving the piston in one direction and wherein a pressure which is higher than atmospheric pressure and lower than the second control pressure is used as the first control pressure.

Abstract: A device of a blow-moulding apparatus for moulding hollow bodies, in particular a stretch blow-moulding machine, is disclosed. The device includes a housing block with a through-bore, at least one valve with a movable piston and with a valve chamber, a first channel which runs in the housing block and which connects the valve chamber to the through-bore, a second channel which connects the valve chamber to an external line, and a cover for fastening the valve to the housing block. The valve connects the first channel and the second channel to one another and separates them from one another. The second channel runs at least partially in the cover and/or at least one part of the valve chamber is arranged in the cover and surrounds the piston. The device is small and compact and the valves may be replaced in a simple manner.

Abstract: A ground drilling device with a wheel undercarriage, comprising wheels and wheel carriers for the wheels, wherein the wheel undercarriage makes possible a towing of the ground drilling device in highway traffic by a towing vehicle, and no tracked undercarriage is present.

Abstract: In a method for monitoring a blow-moulding device for producing a hollow body, the blow-moulding device includes at least one process valve unit for feeding a process fluid into a preform of the hollow body under process pressure, wherein the process valve unit includes at least one electrically operated valve. During a blow-moulding process, at least one value of an electric current of the electrically operated valve is detected. The method and the device allow early recognition of an ageing process of the process valves, in particular their pilot valves, and/or the recognition of the status of valve properties.

Abstract: A solid, particulate composition having at least one water-soluble carrier material, at least one fragrance and at least one rheology modifier from the group of heteroglycans. The carrier material being a water-containing salt (hydrate) of which the water vapor partial pressure, at a specific temperature in the range of from 30 to 100° C., corresponds to the H2O partial pressure of the saturated solution of this salt, such that the salt melts at this temperature in its own water of crystallization. Furthermore, the invention relates to methods for preparing the solid composition and to a washing or cleaning agent containing the solid composition. Moreover, the present invention also relates to the use of such a washing or cleaning agent for cleaning textiles or hard surfaces and corresponding methods for cleaning textiles or hard surfaces using such a washing or cleaning agent.

Abstract: Various embodiments of the present disclosure are directed to devices and methods for monitoring service life of an installed rolling bearing. In one example embodiment, a methods is disclosed wherein measurements are recorded in a region around the bearing using at least two sensors, and remaining service life is calculated. The step of calculating remaining service life includes determining at least one transfer function, and determining, using the at least one transfer function and the recorded measurements of the at least two sensors, at least dynamic loads on the rolling bearing.

Abstract: A medical imaging system for acquiring medical image data from an imaging zone. The medical imaging system includes a memory for storing machine executable instructions and medical imaging system commands. The medical imaging system further includes a user interface and a processor. Execution of the machine executable instructions causes the processor to: receive scan parameter data for modifying the behavior of the medical imaging system commands; receive metadata descriptive of imaging conditions from the user interface; store configuration data descriptive of a current configuration of the medical imaging system in the memory; calculate an error probability by comparing the metadata, the configuration data, and the scan parameter data using a predefined model, wherein the error probability is descriptive of a deviation between the metadata and between the configuration data and/or the scan parameter data; perform predefined action if the error probability is above a predetermined threshold.

Abstract: The present invention relates to an underwater VR headset (1) comprising a diving mask (10), which can be placed on a diver's head on the diver's face in a viewing direction (5), and an underwater display unit (20), wherein the underwater display unit (20) is arranged behind the diving mask (10) in the viewing direction (5) of the diver, wherein the underwater display unit (20) comprises a housing (22) and at least one VR display unit (25) arranged in the housing (22), wherein a virtual reality displayed by the VR display unit (25) can be perceived by the diver through the diving mask (10) and the housing (22), and wherein the housing (22) is gas-tight and liquid-tight. Moreover, the present invention relates to a diving mask (10) and an underwater display unit (20).

Abstract: When acquiring detailed utilization information from imaging equipment in a cross-vendor approach, one or more sensors (16, 18, 22, 24) are positioned within a data security zone (14) in which an imaging procedure is performed. Sensor data is pre-processed on an isolated processing unit (20) to remove any sensitive information and keep a selection of features only. The resultant feature pattern is transmitted outside of the data security zone to a processing unit (28) where pattern recognition is performed on feature pattern to identify the type of imaging modality, scan, etc. being performed as well as to determine whether the scan is being performed according to schedule.

Abstract: A valve unit includes a valve housing having an input line and an output line or the process pressure as well as a process guide shaft, an operating piston for closing and opening a connection between the two lines, two control lines and two control chambers for controlling the operating piston. The operating piston has a closing ring which in the closed state of the connection sealingly abuts a valve seat of the valve housing and it has a diameter which corresponds to a guide diameter of a dynamic process seal. The valve seat includes a softer and more elastic material than the sealing edge. The valve unit has low axial forces, due to low sealing forces, thus makes a long service life with a high number of cycles of operation possible.