Abstract: An eyepiece device (10), in particular for a testing device (100), includes a mount (20), a reticle (30), and a reticle mount (40) in which the reticle (30) is enclosed. The reticle mount (40) is mounted in the mount (20) so as to be rotatable about an axis of rotation (50). A common center of gravity (55) of the reticle mount (40) and the reticle (30) is outside the axis of rotation (50).

Abstract: A radial piston pump, including a drive shaft having an eccentric and at least one piston-and-working chamber combination, wherein the piston-and-working chamber combination includes a working chamber and a piston. The radial piston pump includes at least two piston-and-working chamber combinations which extend radially from the drive shaft, wherein each working chamber is closed by a cover. The radial piston pump is equipped with at least one retaining ring for fixing all of the covers of the radial piston pump; and to a method for producing a radial piston pump.

Abstract: Radial piston pump and a method of assembly of the radial pump in particular radial piston pump, including a drive shaft having an eccentric and at least one piston-and-working-chamber combination, wherein the piston-and-working-chamber combination comprises a cylinder bore and a piston, wherein the cylinder bore has a fluid outlet duct, the cylinder bore is closed with a cover, wherein the cover is received in a cover receptacle bore, the cylinder bore has a longitudinal axis, and the cover receptacle bore has a longitudinal axis, wherein the longitudinal axis of the cylinder bore and the longitudinal axis of the cover receptacle bore are not congruent, in particular are displaced in parallel.

Abstract: A radial piston pump, in particular radial piston compressor, including a drive shaft with an eccentric, and at least one piston/working chamber combination, wherein the piston/working chamber combination includes a working chamber and a piston, wherein the radial piston pump includes at least two piston/working chamber combinations extending radially from the drive shaft, wherein each working chamber is closed with a cover, wherein the radial piston pump is equipped with a housing component with an integrated retaining ring for fixing all of the covers of the radial piston pump.

Abstract: A piston compressor having at least two piston/working space combinations, wherein each piston/working space combination includes at least one fluid inlet channel and one fluid outlet channel, the at least one fluid inlet channel being connected fluidically to a low pressure collecting volume, and/or the at least one fluid outlet channel being connected fluidically to a high pressure collecting volume, wherein the low pressure collecting volume comprises a first part collecting volume and at least one second part collecting volume, the first part collecting volume and the second part collecting volume being connected fluidically to one another via a first overflow channel and at least one second overflow channel, and/or the high pressure collecting volume comprises a first part collecting volume and at least one second part collecting volume.

Abstract: A steering augmenter for a steering device of a drilling tool, including a body, a first flow passage in the body and configured to convey a fluid supply. a channel at the outside surface of the body, the channel being configured to produce a Bernoulli effect therein during fluid flow therein, a second flow passage fluidly connecting the first flow passage to the channel, and a valve associated with the second flow passage and configured to allow, prevent or choke flow through the second flow passage. A downhole drill bit assembly including a steering augmenter, the drill bit attached to the steering augmenter. A method for drilling a borehole into the earth, the method including conveying the steering device into the borehole, operating the valve to allow, prevent or choke flow through the second flow passage, creating a steering force at the steering augmenter by the produced Bernoulli effect.

Abstract: A downhole motor, having a body having an outside surface and a longitudinal extent, a first flow passage defined within the body and disposed along the longitudinal extent of the body, and a second flow passage extending from the first flow passage to a channel at the outside surface, wherein a Bernoulli suction force is created at the channel. A method for drilling a borehole, including directing a fluid through a first flow passage defined within a body of a drill and disposed along the longitudinal extent of the body, directing a portion of the fluid from the first flow passage through a second flow passage to a channel at an outside surface to create a Bernoulli suction force at the channel, and drilling a curved section of the borehole by using the Bernoulli suction force at the channel.

Abstract: A drilling system configured to drill a borehole into a subsurface formation, including a steering device. The steering device is configured to convey a fluid supply through a valve to an outside surface of the steering device, wherein the fluid flow causes a steering force on the steering device. A method for drilling a borehole into a subsurface formation, including disposing a steering device in the borehole, rotating the steering device, urging a fluid to flow through a valve of the steering device to an outside surface of the steering device, wherein the fluid flow causes a steering force on the steering device.

Abstract: Methods, systems, devices, and products for downhole operations. Embodiments include downhole tools comprising an outer member configured for conveyance in the borehole; a pressure barrel positioned inside the outer member; a substantially cylindrical pod positioned inside the pressure barrel; and at least one downhole electronic component mounted between the exterior surface and the frame. The pod comprises at least one rigid outer surface forming an exterior surface of the pod and supported by a central frame extending across a diameter of the pod, such as a plurality of outer rigid surfaces. The pod may include a plurality of coupled rigid elongated semicircular metallic shells, wherein each shell of the plurality comprises a rigid outer surface of the plurality of outer rigid surfaces. Each of the at least one downhole electronic component may be sealingly enclosed within a corresponding shell.

Abstract: An apparatus for protecting an electronics module used in a borehole may include an enclosure disposed along a drill string. The electronics module may be attached to the enclosure by at least one joint. The at least one joint allows a predetermined bending between the electronics module and the enclosure that does not mechanically overload the electronics module. In some embodiments, the joint may be a ball joint.

Abstract: Methods, systems, devices, and products for downhole operations. Embodiments include downhole tools comprising an outer member configured for conveyance in the borehole; a pressure barrel positioned inside the outer member; a substantially cylindrical pod positioned inside the pressure barrel; and at least one downhole electronic component mounted between the exterior surface and the frame. The pod comprises at least one rigid outer surface forming an exterior surface of the pod and supported by a central frame extending across a diameter of the pod, such as a plurality of outer rigid surfaces. The pod may include a plurality of coupled rigid elongated semicircular metallic shells, wherein each shell of the plurality comprises a rigid outer surface of the plurality of outer rigid surfaces. Each of the at least one downhole electronic component may be sealingly enclosed within a corresponding shell.

Abstract: Methods, systems, devices, and products for downhole operations. Embodiments include downhole tools comprising an outer member configured for conveyance in the borehole; a pressure barrel positioned inside the outer member; a substantially cylindrical pod positioned inside the pressure barrel; and at least one downhole electronic component mounted between the exterior surface and the frame. The pod comprises at least one rigid outer surface forming an exterior surface of the pod and supported by a central frame extending across a diameter of the pod, such as a plurality of outer rigid surfaces. The pod may include a plurality of coupled rigid elongated semicircular metallic shells, wherein each shell of the plurality comprises a rigid outer surface of the plurality of outer rigid surfaces. Each of the at least one downhole electronic component may be sealingly enclosed within a corresponding shell.

Abstract: The invention relates to a method and a device for disintegrating a recyclable item in a material-selective manner and using the electrohydraulic effect, an electric discharge being generated, in a container filled with a liquid, using a pulsed current source and within an underwater spark gab between a container base-side electrode and at least one container cover-side electrode that points towards the first electrode, with electric discharge having an average field strength of less than or equal to 5 kV/mm and a pulse or discharge energy of greater than 10 J, and being generated at least substantially in the liquid. In the container, the recyclable item lies partially in the underwater spark gab on the container base-side.

Abstract: A method for operating a wind farm with a number of wind power installations is provided. Each wind power installation respectively has a nacelle with an aerodynamic rotor with one or more rotor blades and a generator. Each of the wind power installations is variable in its azimuth position and at least two of the wind power installations are so close together that, depending on the direction of the wind, they can influence one another by way of the wind. At least a first of the wind power installations is cut back in dependence on its azimuth position in order to positively influence the wind for a further wind power installation arranged downwind of the first.

Abstract: Methods, systems, devices, and products for downhole operations. Embodiments include downhole tools comprising an outer member configured for conveyance in the borehole; a pressure barrel positioned inside the outer member; a substantially cylindrical pod positioned inside the pressure barrel; and at least one downhole electronic component mounted between the exterior surface and the frame. The pod comprises at least one rigid outer surface forming an exterior surface of the pod and supported by a central frame extending across a diameter of the pod, such as a plurality of outer rigid surfaces. The pod may include a plurality of coupled rigid elongated semicircular metallic shells, wherein each shell of the plurality comprises a rigid outer surface of the plurality of outer rigid surfaces. Each of the at least one downhole electronic component may be sealingly enclosed within a corresponding shell.

Abstract: An apparatus for protecting an electronics module used in a borehole may include an enclosure disposed along a drill string. The electronics module may be attached to the enclosure by at least one joint. The at least one joint allows a predetermined bending between the electronics module and the enclosure that does not mechanically overload the electronics module. In some embodiments, the joint may be a ball joint.

Abstract: A method for checking the operation of a photovoltaic module of a photovoltaic power station. The module has a positive terminal, a negative terminal and a number of solar cells, in particular thin-layer solar cells. An electric field emitted by the photovoltaic module as a result of solar radiation is measured at an exposed measurement location during the operation of the power station and the electrical voltage present between the positive terminal and the negative terminal is determined from the measured electric field. A corresponding measuring instrument has a sensor to be placed near the photovoltaic module so as to measure the electric field strength. A rod or wand may be used to position the sensor, or a robot may be configured for automatic travel on the photovoltaic module.

Abstract: A method and apparatus for automatic down-hole asset monitoring is provided that monitors tagged down-hole assets wherein the assets travel into and out of an oil or gas well. A rig reader system, a controller and a computer incorporating a graphic user interface are connected to monitor tagged assets moving into and out of a drill head. The rig reader portion may be a ring shaped device having therein an integrated antenna array and radio frequency identification interrogators that interrogate an SAW or RFID tag as it moves through the ring shaped device. The integrated antenna array may include evenly distributed antennas about an interior surface of the ring shaped device that are covered by a radome that seals the antenna array and interrogators against contamination from caustic chemicals and other substances found on or around an oil rig platform.

Abstract: The invention relates to a method and a device for disintegrating a recyclable item in a material-selective manner and using the electrohydraulic effect, an electric discharge being generated, in a container filled with a liquid, using a pulsed current source and within an underwater spark gab between a container base-side electrode and at least one container cover-side electrode that points towards the first electrode, with electric discharge having an average field strength of less than or equal to 5 kV/mm and a pulse or discharge energy of greater than 10 J, and being generated at least substantially in the liquid. In the container, the recyclable item lies partially in the underwater spark gab on the container base-side.

Abstract: A method and apparatus for packaging a Surface Acoustic Wave (SAW) piezoelectric device into a SAW tagging device for use in a harsh environment is provided. An exemplary SAW tagging device comprises a SAW piezoelectric device within a header container. The header container is electrically connected to an antenna system that comprises an antenna substrate, a dielectric disk that may operate as an antenna reflector in combination with a metal base. The antenna system, antenna substrate, dielectric disk and header container are all contained within a cavity in the metal base. The SAW tagging device is completely encased in a chemical, temperature and environmentally resistive and durable material that is transparent to the operating radio frequency of the SAW piezoelectric device contained therein.