Abstract: An articulated vehicle joint including an improved locking pin having a removable upper retainer. The articulated vehicle includes a first frame member and a second frame member pivotable about a hinge point relative to the first frame member. The locking pin is configured to prevent the second frame member from pivoting about the hinge point relative to the first frame member.

Abstract: A shaft-gear connection comprises a shaft and a shrunk-on gear that has an axial first section, attached by a first shrink-fit bond, and an axial second section, attached by a second shrink-fit bond. The second shrink-fit bond is greater than the first shrink-fit bond so that a greater maximum torque to be transmitted from the gear to the shaft by the second shrink-fit bond than by the first shrink-fit bond. An axial intermediate section, attached by a third shrink-fit bond, is located between the axial first section and the axial second section. Both a surface pressure and a maximum torque that can be transmitted by the third shrink-fit bond are greater than the surface pressure and the maximum torque that can be transmitted by the first shrink-fit bond, but are less than the surface pressure and the maximum torque that can be transmitted by the second shrink-fit bond.

Abstract: A vehicle destabilizing device that provides for the selective, remotely-deployed deflection and/or overturning of a targeted vehicle regardless of wheel or undercarriage configuration. The device is comprised of a combination of a remote arm/safe mechanism, a remote deployment switch, one or more lifting devices, a housing, and one or more structural members contiguously engaging the vehicle. The housing can be at least partially submerged in a road surface or protrude from the road surface so as to be driven over until deployed. A sensor can provide independent deployment once the device is armed.

Abstract: A paving system for paving or flooring includes a top layer of a plurality of paving elements, and an underlayment support layer of a polymeric material configured into panels. The panels are suitable to support the paving elements, the panels having a generally planar support surface and a recovery characteristic such that a deformation from a concentrated compressive load applied for a short duration returns the support surface to a generally planar condition.

Abstract: Tactile detection embedment plates used in pedestrian walkways releasably aligned by a bracket on at least one of the embedment plates. The bracket can be mated with a bracket on another plate to define a receiver yoke in which a wedge is disposed for a releasable plate assembly connection.

Abstract: A paver includes an enclosed furnace for melting an inorganic paving material and a carriage for carrying the furnace. The furnace includes a heating chamber for receiving the paving material, a heater for heating the heating chamber to a temperature greater than 1,600° C. to melt the paving material, and an outlet for discharging melted paving material to form a paved road surface.

Abstract: A flood barrier comprises hollow self-filling units (10, 12, 14, 16) placed end-to-end and connected at their ends by downwardly tapered bilobal (46) keys inserted into sockets (26, 28) at the ends of the units, wherein the keys incorporate concrete or other ballast for negative buoyancy.

Abstract: An alternating anaerobic and aerobic digestion system and method of forming same includes a subterranean enclosure configured to hold organic matter. The enclosure has a plurality of conduits in a bottom surface of the enclosure. The digestion system further includes an irrigation system configured to dispense a liquid from a top portion of the enclosure and to recover a percolated liquid from a bottom portion of the enclosure, a ventilation system configured to provide air flow to the bottom portion of the enclosure, and a gas-tight membrane cover configured to cover the enclosure.

Abstract: The instant disclosure relates to a seat portion structure for a ground-based hydraulic turbine engine. The seat portion structure includes a base plate. A first bearing element is connected to the base plate and contacts the ground. At least three arms are connected to the base plate by a pivoting link. The arms are adapted for pivoting relative to the base plate between a first position, in which the arms are placed near each other, and a second position, in which the arms radially extend from the base plate. A second bearing element is connected to one end of each arm and contacts the ground. A positioning device is adapted for changing the distance between the end of at least one arm and the associated second element. The structure includes, for each arm, a device for locking the arm in the second position.

Abstract: A floating wind farm includes a plurality of floating rafts connected with one another and being disposed in a body of water below the water by a predetermined distance; a plurality of wind turbines connected to the floating rafts respectively and being configured to be driven by wind and thereby generate power; a power generator connected to the floating rafts; a plurality of anchors connected to the floating rafts respectively and disposed in the body of water for confining the location of the floating rafts. Each of the floating rafts includes at least three pipes and a plurality of ballast blocks attached to the pipes. The pipes are configured to store air compressed by the power generated by the wind turbines. The power generator is configured to generate and output electricity from the compressed air stored in the pipes.

Abstract: An adapter for connecting a helical pile to a drive assembly includes a pin block connectable to the helical pile. A tool body has a first protrusion to receive the pin block to facilitate aligning the helical pile with the tool body. A locking member is movably connected to the tool body. The locking member is movable between an insertion position to allow insertion of the pin block and a locking position to lock the pin block in the tool body.

Abstract: A head includes an outer cylindrical body with at least one upper inlet for fluids, at least one outlet side nozzle and at least one helical duct having a helical central line. The duct connects the upper inlet to the nozzle and imparts the fluid flowing through it a helical motion about the longitudinal axis of the outer body towards the nozzle. The helical duct is progressively tapered towards the nozzle and includes a terminal length of the duct which is radiused to the nozzle in a tapered manner, both when viewed in cross-sectional planes parallel to the longitudinal axis and tangent to the helical central line, as well as when viewed in cross-sectional planes perpendicular to the longitudinal axis.

Abstract: In a method for lining tunnel walls or ceilings with protective nets or the like, web-shaped protective net material is unwound from a reel and is fastened to the tunnel walls or ceiling by tie bolts. The reel is rotatably arranged. The rotation of the reel about a shaft is controlled in order to unwind the protective net material, the shaft being mechanically moved in steps along the tunnel walls or ceiling together with the reel. The protective net material unwound in each step is preferably stretched and mechanically fastened. The individuals carrying out these processes are thus not exposed to any direct risk, while the lining process can be accelerated.

Abstract: The present description relates to an apparatus and a process for vacuum-assisted pneumatic conveying of powder products, granules or the like. The apparatus comprises a container, a filtering unit (4) in the container and a rotary head with a nozzle (108) for washing the external wall of the filter unit (4). The apparatus provides a more immediate and efficient internal cleaning, allowing sterilization thus making the apparatus suitable for use also in the pharmaceutical sector.

Abstract: A tool for the turn/turn broaching or external milling of a workpiece is disclosed. The tool comprises a disk-shaped broaching wheel or at least one segment of such a broaching wheel. In each case, at least one cutting-tip holding fixture in each case for receiving a cutting tip is provided on the end faces of the broaching wheel or segment laterally adjoining a circumferential surface. On at least one of the two end faces, a cutting-tip holding fixture is formed in a cartridge, which is axially adjustable with respect to the broaching wheel or segment by an axial clamping wedge. The cartridge is designed in such a way that it at least partially covers the axial clamping wedge in a direction towards the circumferential surface.

Abstract: A tapping machine (1) executes a tapping operation by operating a spindle motor (21) and a feed axis motor (31) in synchronization, and includes a spindle reversal detector unit (34) for detecting the reversed operation of the spindle during the tapping operation, and a reverse correction amount production unit (35) for producing a reverse correction amount for improving follow-up performance of reversed operation of the feed axis at the time when the reversed operation of the spindle is detected by the spindle reversal detector unit (34). When the reversed operation is detected by the spindle reversal detector unit, the reverse correction amount produced by the reverse correction amount production unit (35) is added to the speed instruction on a speed control loop of the feed axis control unit (30) or to an integrator (41) of the speed control loop.

Abstract: A rotational tool includes a cutting head and a basic body. The cutting head includes a cutting portion including a chip flute and at least one of a cutting edge and an insert seat, where the chip flute is located before the at least one of the cutting edge and the insert seat in a rotational direction of the cutting head. A coupling portion is located axially rearward of the cutting portion relative to a cutting end of the cutting head, and is configured to couple to the basic body. A coolant slot extends axially and opens at an external radial surface of at least a portion of the cutting head.

Abstract: A drill bit has a shank portion having a plurality of SDS-type slots, a cutting portion comprising at least one cutting flute, and an intermediate portion connecting the shank to the cutting portion, the intermediate portion including at least one additional slot. A depth gauge includes a body configured to receive the drill bit, a retention mechanism coupled to the body and having an inward projection to removably couple the body to the at least one additional slot in the drill bit, and a cap coupled to the body such that the cap contacts a workpiece surface to prevent the drill bit from entering the workpiece more than a predetermined depth, wherein the cap is movable relative to the body among a plurality of positions, wherein each of the plurality of positions corresponds to a different predetermined drilling depth.

Abstract: A rigid design for a machine tool having perpendicular X, Y, and Z axes includes fixed X-axis frame members at the back of the machine, fixed Z-axis vertical frame members at the front of the machine, and fixed upper and lower Z-axis frame members rigidly attached to the fixed X-axis frame members and the fixed Z-axis vertical frame members. The frame members form a fixed, rigid, closed force loop design. A movable Y-axis column is bifurcated and a headstock is mounted in the center opening of the column. The headstock is advanced and retracted relative to the workpiece by moving the Y-axis column and the headstock relative to the workpiece. Because the headstock is fixed relative to the Y-axis column, the unsupported portion of the headstock relative to the Y-axis column does not change as the Z-axis position of the headstock changes relative to the workpiece.

Abstract: A wheel restraint system has a restraint body having a lower portion and an upper portion. The upper portion is connected to the lower portion by a pivot point. The upper portion has a clamping portion extending across at least a portion of an upper portion of an outer surface of the wheel to be restrained. The upper portion moves about the pivot point between a release position and a clamping position such that the clamping portion moves toward and away from the outer surface of the wheel to be restrained. An actuator moves the upper portion between the release position and the clamping position. An anchor anchors the lower portion to a surface.

Abstract: A low profile hold down assembly is mounted to the exterior surface of a sidewall of a trailer. The hold down assembly includes a cover member formed from the same material from which the sidewall of the trailer is formed and therefore is aesthetically desirable.

Abstract: One or more embodiments of the present invention relate to a torque-limited attachment device, having a first head piece with at least one shaped element for the purpose of establishing a positive-fit connection to an attachment tool, and having a second head piece which has at least one threading, wherein both head pieces are connected to each other, forming at least one predetermined breaking point which breaks at a limit torque between the two head pieces such that a first breakaway surface, the same being functionally assigned to the first head piece, and a second breakaway surface, the same being functionally assigned to the second head piece, are created, and wherein at least the second head piece has a base material inside, the same having a corrosion-resistant surface coating.

Abstract: A unique self-drilling anchor screw is configured so that it can be set and used to secure a first object to a second object using only one tool to save time and effort. A nut of the screw engages a nut stop when turning in reverse, thereby driving rotation of the screw in reverse. The screw has a drill bit tip adapted for drilling a hole while turning in reverse. A hole is drilled using the drill bit tip while turning the nut in reverse with a socket wrench of the one tool. After drilling the hole, the nut is turned in the forward direction with the socket wrench to engage a sleeve member of the screw, which sets the screw in the second object. Then, the nut is further turned forward using the socket wrench to tighten the nut against the first object located between the nut and the second object.

Abstract: In case when an external force in a direction of pulling out from a female member acts on a male member in a fully fastened state, the male member moves in an axial direction, and a position where claw parts of engaging leg pieces engage moves from mounting parts and to contact parts. An engaging slot is formed on the contact part, and the engaging slot therefore engages with the claw part of the engaging leg piece. Movement in the direction of rotation of the male member is thereby restricted, and the male member is moved in state along the axial direction, so that the claw parts of the engaging leg pieces do not engage with engaging holes, and a state in which a vehicle body panel and a trim board are sandwiched by a flange part and the engaging leg pieces can be maintained.

Abstract: The invention provides a type of elastic nut, primary comprising first and second compression slots allowing for compression and connecting strips at the bottom of the retaining nut, with the connecting strips in alternate positions, so that when the retaining nut is used to hold a plug in place on the bolt, and further torque is applied to the retaining nut, the nut is held in place on top of the plug with elastic force, effectively holding the plug in place more tightly.

Abstract: The invention relates to a particle board screw having a conical screw tip with a thread. The thread extends from the screw shaft to the front end of the screw tip. In order to make it easier to screw in, and in order to reduce the splitting effect in wood, a shoulder or rib is disposed in the front region of the screw, which is to say on the end or inside of the tapering part, preferably extending around the entire circumference with no pitch. The rib has a front flank running almost transversely to the longitudinal axis of the screw and a more strongly inclined rear flank. The screw has a reduced screw-in torque.

Abstract: Method and device for manufacturing adhesively bound printed products composed of a book block and a cover, in which the book block is conducted past processing stations of the adhesive binding device for processing and applying glue to its back. A cover is supplied to the back to which glue has been applied in a synchronously timed controlled manner. After merging of the cover with the book block, a measuring procedure for measuring a mutual actual position of cover relative to book block. Subsequently, this actual position is compared to a predetermined desired position, and, in the case of deviations, a correction value is determined and stored. Prior to the renewed occurrence of the pairing of drive member and clamp, an appropriate change of the mutual positions of clamp and drive member is carried out.

Abstract: Manufacturing cost or energy consumption of a substrate processing apparatus can be reduced. The substrate processing apparatus includes a substrate loading/unloading unit (a substrate transit chamber 12) that transfers a substrate 2 accommodated in a carrier 3; a substrate transfer chamber 14 (25) communicating with the substrate loading/unloading unit via a substrate loading/unloading port 37 (39); a plurality of substrate processing chambers 15 to 24 (26 to 35) arranged along the substrate transfer chamber 14 (25); a substrate transfer device 36 (38) provided in the substrate transfer chamber 14 (25) and configured to transfer the substrate 2 between the substrate loading/unloading unit and the substrate processing chambers 15 to 24 (26 to 35); and a clean air flowing unit 41 (42) that allows clean air to flow along the substrate transfer chamber 14 (25).

Abstract: A semiconductor processing tool is disclosed, the tool having a frame forming at least one chamber with an opening and having a sealing surface around a periphery of the opening, a door configured to interact with the sealing surface for sealing the opening, the door having sides perpendicular to the door sealing surface and perpendicular to a transfer plane of a substrate, and at least one drive located on the frame to a side of at least one of the sides that are substantially perpendicular to the door sealing surface and substantially perpendicular to the transfer plane of the substrate, the drive having actuators located at least partially in front of the sealing surface and the actuators being coupled to one of the sides of the door for moving the door from a sealed position. The at least one drive is located outside of a substrate transfer zone.

Abstract: An apparatus (10) for loading a transport container with a load of bulk material has a load bin (20) positioned for axial movement atop a base assembly (40). A packer blade (90) is positioned inside the load bin for movement relative to the load bin in the same axial direction. The load bin has an open first end (22) and a second end (24), with a pair of vertical side walls (66) and a substantially open top surface. Drivers (60, 92) are provided for the axial movements. Material is loaded into the load bin, the openable end of the transport container is placed around the first end of the load bin, and the load bin is extended into the transport container until the packer blade is inside the transport container. By retracting the load bin while retaining the packer blade inside the container, the load is transferred.

Abstract: A transmission lift arm to facilitate the safe lifting and/or lowering of a transmission from or into a transmission jack. The transmission lift arm is provided in pairs and each is adapted for attachment to a transmission bell housing utilizing threaded rods secured thereto. The lift arms may be adjustably spaced apart on the lift arm of a lift truck to accommodate various spacings is the bell housing holes into which the threaded rods are placed and secured. The transmission arms may also be provided in a variety of sizes to mount to different lift bar sizes and/or to have different size threaded rods to accommodate a wide range of motor vehicle transmissions. In alternate embodiments, transmission lift arms having an adjustable opening may be used to accommodate different lift bar dimensions.

Abstract: A gripping organ for load-moving vehicles comprises a support structure (7), removably engageable to a support arm (4) of a load-moving vehicle (2); at least gripping pliers (8), operatively engaged to the support structure (7) and predisposed to engage at least an object (P) to be moved, the gripping pliers (8) comprising at least a pair of gripping elements (16) which are mobile between an operating position, in which the gripping elements (16) engage the object (P), and a non-operating position, in which the gripping elements (16) are disengaged from the object (P); the pliers (8) being translatable along a translating direction (A) and rotatable about a rotation axis (B) which is perpendicular to the translating direction (A).

Abstract: An improved Z-bar linkage for wheel loader machines for maneuvering an implement such as a bucket or pallet forks may include lift arms pivotally connected between an end frame of the machine and the implement, a tilt link pivotally connected between the implement and a tilt lever that is pivotally connected between the tilt link and the lift arms. Lift cylinders may rotate the lift arms to raise and lower the implement, and a tilt cylinder may drive the tilt lever and tilt link to rotate the implement between a dump position and a racked position. Ratios of the lengths of these kinematic elements are provided such that the good performance with one implement, such as bucket, does not result in poor performance with another implement, such as the pallet forks.

Abstract: A coupler for a backhoe or other excavator includes a frame including an upper portion and a lower portion. The upper portion is adapted to be secured to an associated backhoe or excavator arm. The lower portion includes a first hook adapted to mate releasably with a first associated attachment pin and includes a second hook adapted to mate releasably with a second associated attachment pin. First and second safety locks are movably connected to the frame and move relative to the first hook between an engaged position for capturing the first associated attachment pin in the first hook and a disengaged position for releasing the first associated attachment pin from the first hook. An actuator is adapted to move the safety locks selectively between the engaged and disengaged positions.

Abstract: The invention relates to apparatuses for turning racks (1) for specimen slides (4), having a rack receptacle for at least one rack, the rack (1) being oriented in the rack receptacle horizontally in a first position such that specimen slides in the rack are arranged vertically next to one another relative to a longitudinal axis of the rack, and the rack receptacle being pivotable around a rotation axis (8) into a second position in which the rack (1) is oriented vertically. The rotation axis (8) of the rack (1) extends obliquely with respect to the longitudinal axis (5) of the horizontally oriented rack (1), so that the rack (1) can be pivoted back and forth between the first and the second position by means of a 180-degree rotation around the rotation axis (8).

Abstract: A method for preventing cracking of a turbine engine case includes the steps of disposing at least two rails upon an exterior surface of a turbine engine case; and securing a first rail to a first means for attaching at least one fan exit guide vane to the turbine engine case and securing a second rail to a second means for attaching the at least one fan exit guide vane to the turbine engine case.

Abstract: A method for increasing the operational flexibility of a turbomachine during a shutdown phase is provided. The turbomachine may include a first section, a second section, and a rotor disposed within the first section and the second section. The method may determine an allowable range of a physical parameter associated with the first section and/or the second section. The method may modulate a first valve and/or a second valve to allow steam flow into the first section and the second section respectively, wherein the modulation is based on the allowable range of the physical parameter. In addition, the physical parameter allows the method to independently apportion steam flow between the first section and the second section of the turbomachine, during the shutdown phase.

Abstract: A removable steam inlet assembly and lifting fixture for a steam turbine are provided to facilitate lifting of the upper exhaust hood of the steam turbine. The removable steam inlet assembly is detached from the steam inlet of the turbine inner casing for the lift and mounted to the upper exhaust hood with a lifting fixture. Detaching and removal of the steam inlet assembly substantially lowers the clearance height for the lift, allowing lower turbine building height with significant cost savings.

Abstract: A side channel compressor for compressing a gas comprises a housing (3), a side channel (30), located in the housing (3) and having a cross-sectional area (A), for compressing a gas, a gas inlet opening (31) formed in the housing (3), the gas inlet opening (31) being in flow connection with the side channel (30) for introducing a gas, a gas outlet opening (32) formed in the housing (3) for discharging the gas to be compressed from the side channel (30), wherein the gas outlet opening (32) is in flow connection with the gas inlet opening (31) via the side channel (30), and an impeller (2) which is mounted for rotation in the housing (3) and comprises impeller blades (1) disposed in the side channel (30), wherein the cross-sectional area (A) of the side channel (30) decreases non-monotonically from the gas inlet opening (31) towards the gas outlet opening (32).

Abstract: A steam turbine may include a turbine section including a rotor. An inner casing is provided about the turbine, the inner casing including an upstream end, a downstream end and an inner casing exhaust port positioned at the downstream end allowing exhaust steam to exit the inner casing. An outer casing is provided about the inner casing, the outer casing including an upstream end, a downstream end and an outer casing exhaust port positioned at the upstream end of the outer casing. A flow path extends between the inner casing and the outer casing through which the exhaust steam passes in an upstream direction from the inner casing exhaust port to the outer casing exhaust port. A flow barrier may be provided in the flow path between the inner casing and the outer casing.

Abstract: A rotor containment structure for gas turbine engine comprises an inner containment layer having a single integral body defining an annular structure about the rotor, and having a support on the inner surface of the inner containment layer for at least one shroud segment. An outer containment layer provides containment strength to contain blade fragments and defining an annular structure about the inner containment layer. Air passage through the outer containment layer for air to pass from an exterior of the outer containment layer to an interior of the outer containment layer; and the inner containment layer being connected at a first end to the outer containment layer with a gap defined between the inner surface of the outer containment layer and the outer surface of the inner containment layer, the gap being in fluid communication with the air passage such that air flows through the gap, beyond a free second end of the inner containment layer.

Abstract: An aerofoil blade or vane suitable for the turbine of a gas turbine engine includes an extending aerofoil portion having facing wall parts interconnected by a divider member to partially define first and second cooling fluid passage portions. The first and second passage portions are interconnected in a series fluid flow relationship by a bend passage portion. The first passage portion directs cooling fluid to the bend portion and the second passage portion exhausts cooling fluid from the bend portion. The divider member provides a localised contraction of the downstream end of the first passage portion to accelerate the cooling fluid flow before it enters the bend passage portion. The divider member provides a localised progressive series narrowing and opening of the upstream end of the second passage portion in the general direction of cooling fluid flow.

Abstract: A cooling circuit for a drum rotor of a multi-stage steam turbine including tangential female dovetail slots in the drum rotor for tangential entry dovetailed buckets. Axial female dovetail slots are cut into drum rotor projections between stages of the tangential entry buckets for mounting axial inserts. The axial inserts may include axial and radial cooling passages allowing cooler external steam to cool the drum rotor flow through tangential cooling spaces between the tangential female dovetail slots and the tangential entry dovetailed buckets.

Abstract: The invention at hand relates to a housing for a compressor of a gas turbine, in particular of an aircraft gas turbine, with an external housing with at least one air supply opening and an interior housing formed by at least two housing segments, with the housing segments having at least one injection nozzle to inject air suctioned in via the air supply openings into a flow channel in the area of blade tips of blades of a rotor of the compressor. In this case, the housing segment has at least one air flow channel, with the air flow channel being designed in such a way that a direct air supply to the at least one injection nozzle occurs via at least one air supply element arranged in the air supply opening of the exterior housing. The invention relates moreover to a compressor of a gas turbine as well as to a method for the manufacture of a housing segment of a compressor housing.

Abstract: A high pressure turbine of a turbomachine such as a turbojet, in which a control box of radial clearances of rotating blades are provided. An annular element including a determined flexibility has one end fixed to an annular support and the other end supported by a simple axial bearing with a given pressure on the upstream side of the control box. Thus, disturbing vibration loads are prevented at the attachment points of the control box with the external casing of turbines, thereby also eliminating the risk of cracks occurring.

Abstract: The present disclosure relates generally to a sump pump guard adaptor, system, and method of adapting thereof, and more particularly to an inlet pre-screen cover also acting as a platform for pit positioning of a pump, a platform for adapting multiple pumps made to adapt over the inlet of sump pumps of different size to be configured into sump pits also of varied size. The adaptor can be adapted using a base connected to a top portion or simply a top portion also called the adaptor itself. The design also includes a plurality of flow openings that allow for easy cutting or bending of different portions of the adaptor for example on the inner and outer radii of the adaptor, a multi-segment design for better stacking and storage in a compact configuration, a plurality of pipe openings for use in a staked sump pumps configuration, an access doors to help lower the sump pump into the adaptor, and an adaptor with a secondary pump support built in the main body or as an external piece adaptable to the main body.

Abstract: An adjustable support apparatus for a steam turbine nozzle assembly is disclosed. In one embodiment, a steam turbine apparatus includes: a diaphragm segment having a horizontal joint surface and an angled ledge below the horizontal joint surface, the angled ledge configured to receive a complementary angled portion of a wedge member.

Abstract: A shell structure for a turbine engine that includes a plurality of diaphragms, wherein each diaphragm comprises: an annularly formed support structure that positions and secures a row of circumferentially spaced stator blades, and wherein the plurality of diaphragms are configured and axially stacked such that each diaphragm abuts the diaphragm that is positioned directly upstream from it and the diaphragm that is positioned directly downstream from it such that a first shell structure is formed; a second shell structure disposed outboard of the first shell structure; and an intermediate chamber defined between an outboard face of the first shell structure and an inboard face of the second shell structure; wherein: a downstream end and an upstream end of the first shell structure define the axial length of the first shell structure; one or more downstream radial ports are defined at the approximate axial position of the downstream end of the first shell structure, each downstream radial port fluidly connecti

Abstract: A fan includes at least one fan frame, at least one impeller and at least one active flow-control device. The fan frame includes at least one air inlet and at least one air outlet. The impeller is disposed in the fan frame. The active flow-control device is disposed on the fan frame for adjusting the size of the air inlet or the size of the air outlet according to demands.

Abstract: The guide blades provided for the variable turbine geometry are adjustably arranged within a radial gap through which gases can flow on a moveable carrier ring, which is axially clamped against stops on or in the radial gap with a thrust spring device. According to the invention, the thrust spring device loads the carrier ring on the positions closely adjacent to the stops. The thrust spring device is designed open without sealing function and if applicable combined with a separate seal without thrust function.