Abstract: A gas turbine engine according to an aspect of the present disclosure includes, among other things, propulsor means, first compression means, second compression means, reduction means for reducing a rotational speed of an output that drives the propulsor means relative to an input, first expansion means for driving the second compression means, and second expansion means for driving the input of the reduction means. The first compression means includes a plurality of arrays of rotor blades and a plurality of arrays of stator vanes arranged in a plurality of compression stages. A factor (F) is defined as a total number of the rotor blades in an array of the plurality of arrays divided by a total number of the stator vanes in an adjacent array of the plurality of arrays. The factor (F) is between 1.19 and 1.55 for at least two of the arrays of the rotor blades.

Abstract: A fluid pump for generating a fluid stream (55) is provided. The fluid pump includes a first actuator (20) with a first vibration element, a second actuator (30) with a second vibration element, and a power source that is connected to the first actuator and second actuator to supply energy to the first actuator and second actuator. The fluid pump further includes a controller that is connected to the power source and controls the power source to vary the energy supplied to the first actuator and second actuator. The first actuator (20) and the second actuator (30) are arranged opposite to each other so that a first movement direction of the first vibration element is inclined with respect to a second movement direction of the second vibration element.

Abstract: The present disclosure provides an accumulator system that utilizes an ionic liquid for pressurizing gases. In particular, the accumulator system of the present disclosure avoids use of any internal mechanical parts, e.g., a bladder or a piston, thereby eliminating any potential for mechanical failure experienced by conventional accumulators.

Abstract: Disclosed is a valve device, comprising at least one valve piston arranged in a valve housing in a longitudinally displaceable manner, which valve piston is moved by means of a drive in conjunction with the assigned drive train and interconnects individual fluid ports present in the valve housing in a fluid-conveying manner or separates them from one another. A sensor device monitors the respective positions of the drive train and thus the respective positions of the valve piston in the valve housing.

Abstract: The present invention is directed to a system, device, apparatus, methodology, technique and kit that allow a party to more effectively purge a hydraulic system of trapped air, along with any residual oil. The configuration of the present invention, which connects to the external hydraulic system, collects the residual oil in an accumulation chamber with transparent sides. A worker can thus see the progress of the hydraulic purge and easily dispose of the oil without mess and exposure.

Abstract: A locking assembly can lock a workpiece. The workpiece includes a locking hole. The locking assembly includes a housing, a movable component, and an unlocking handle. The movable component includes a sleeve, a pin, and an unlocking cover. The sleeve is mounted on the housing. The pin is accommodated in the sleeve, and a portion of the pin protrudes from the housing and accommodated in the locking hole. The unlocking cover is fixed to the pin. The unlocking handle is disposed between the unlocking cover and the sleeve. The unlocking cover can be pulled from a first direction to move the pin out of the locking hole; or the unlocking handle can be pulled from a second direction intersecting with the first direction, and the unlocking handle can abut against the unlocking cover to drive the pin to move out of the locking hole.

Abstract: Embodiments of the adjustable clamps having a curved body having an inner surface, an outer surface, a first side section, a middle section, a recess, and a bore to receive a fastener to compress, or expand the adjustable clamps are presented herein. Other embodiments and related methods are also disclosed herein.

Abstract: A fastener assembly for releasable interconnecting two objects comprises a retainer having means at the top end for attaching the retainer to a first object and an end wall at the bottom end having an aperture. A post affixed to a second object at its bottom end is captured within a central cavity of the retainer by resilient snap fit wherein either the post or the retainer is radially deflectable. A locking element slidably connected to the retainer is axially moveable between locked and unlocked positions operative to restrict the relative radial movement of the post and the retainer to prevent the removal of the post. The locking element maybe a pin moved by a magnet and extendable into a bore of the post by a spring. Alternatively, the locking element may be a sleeve closely fitted around the outside of the retainer.

Abstract: A pin structure, comprises an external piece; a shaft coupled to the external piece and configured to extend into a via in an accessory; and a retention component couped to the shaft and configured to interact with the via to retain the pin structure to the accessory.

Abstract: A system and method for securing an item. Custom connectors which only couple to a custom converter can secure an item, deter its theft, and prevent unauthorized access. The custom connectors have a custom head which has a custom void. The custom void has a unique shape which matches and couples with a custom converter. A custom converter allows the custom connector to be manipulated. If desired, subsequently, when the item is in a more secure location, conventional screws can replace the item.

Abstract: A fastening arrangement in the form of a pin and sleeve combination is provided for fixing one or more screening media modules on top of screen support panel structure. The fastening arrangement includes a pin capable of being screwed into a sleeve, the pin being provided with engagement elements capable of connecting with complementary projections on a handling tool for facilitation of installing and dismantling the fastening arrangement. A method for fastening the screening media module on to the screen support panel structure, and a screening equipment housing the same for separating solid materials according to size is also provided.

Abstract: A self-feed bit system includes a shank extending along an axis and configured to be coupled to a tool holder of a power tool and a cutting head couplable to the shank and including a sector shaped base. A radially extending lip is at a leading edge of the sector shape facing in a cutting direction and includes a rake face facing the cutting direction at a rake angle relative to the axis. A radially extending cutting blade is coupled to the radially extending lip and extends axially forward from the base at a first height. An at least partially threaded tip is coupled to the shank and extends axially forward of the cutting blade. Two or more teeth are positioned on a perimeter of the base trailing the cutting blade. Each tooth extends axially forward from the base at a second height that is less than the first height.

Abstract: An ice screw assembly includes a screw that has a head and a shaft. The shaft has a threaded portion and an unthreaded portion and the threaded portion penetrates ice for securing the screw into the ice. A first washer is secured around the screw and the first washer is positioned on the unthreaded portion of the shaft to abut the ice when the screw is threaded into the ice. A second washer is movably positioned around the screw and the second washer is positioned between the first washer and the head. The second washer has an opening extending through the second washer thereby facilitating an anchoring line of an ice shack to be attached to the second washer to secure the ice shack to the ice.

Abstract: An adjustable resistance hinge system for a joint connecting at least a first articulating member and a second articulating member, the hinge system comprising a central element defining a hinge axis. The central element comprises a first and a second elongate arm, each elongate arm extending away from the hinge axis, and a first and a second keeping element hinging on the hinge axis are attached to the first and the second articulating members, respectively. A first and a second biasing device are also engageable with the first and the second elongate arms, respectively. The first and the second elongate arms extend into the first and the second articulating members, respectively, and the first and the second biasing devices engage the central element to resist relative motion of the first and the second articulating members about the hinge axis. The adjustable resistance hinge system allows two joined members to be adjusted to replicate desired physiology, limits, and resistance.

Abstract: A foil bearing includes a bearing housing, a top foil, a bump foil, and two retaining portions. A holding groove is formed in the inner circumferential surface of the bearing housing to extend in an axial direction. The top foil and the bump foil each include an insertion plate portion, which is inserted into the holding groove and extends in the axial direction. Each of the retaining portions includes a facing surface that faces the insertion plate portion in the axial direction. In the axial direction, the distance between the facing surfaces of the two retaining portions is longer than the length of the insertion plate portion. At least one of the insertion plate portions includes a bent plate portion that is bent to contact the facing surface.

Abstract: Radiaxial bearing having a cylindrical configuration centered on a central axis, the bearing having at least one harmonic wave-type reduction stage and including three or more rings and a first ring-shaped arrangement of rolling elements, each being centered on the central axis, the three or more rings enclosing the ring-shaped arrangement of rolling elements such that a) an innermost of the rings has a race in contact with the rolling elements from radially inward, an outermost of the rings has a race in contact with the rolling elements from radially outward, and a third ring, and possibly a fourth ring, has or have a race or races in contact with the rolling elements axially from both sides, or b) the three or more rings have four races contacting the rolling elements in a rectangular box formation, the box formation being oriented at an oblique angle with respect to the central axis of between 0° and 360°, wherein two opposed races have structures with different spatial frequencies that are designed to fo

Abstract: In a thrust needle roller bearing, even in an environment where an amount of lubricating oil is small, the amount of lubricating oil is held and seizure is prevented. The thrust needle roller bearing includes a plurality of needle rollers, a bearing ring (31) having an annular raceway surface (31a) on which the needle rollers roll, and a cage that rollably holds the needle rollers, in which an oil repellent film (41a) is formed by oil repellent treatment on a portion of the raceway surface (31a) other than a portion in contact with the needle rollers.

Abstract: A linear motion guide apparatus in which a guide rail can be readily provided with a meshing portion that meshes with a gear is provided. The linear motion guide apparatus includes: two guide rails that are movable relative to each other in a longitudinal direction thereof via at least one rolling element; and a cage configured to hold the rolling element and rotatably hold a gear engaging with a meshing portion provided to at least one of the two guide rails. The meshing portion includes a plurality of circular holes arranged in the longitudinal direction on the guide rail. Each of the circular holes has a wall surface formed in a cylindrical shape.

Abstract: A bearing assembly, preferably a wheel bearing assembly, includes at least one first ring and at least second ring, at least one of the first and second rings being rotatable and a bearing interior being defined between the first and second rings. The first ring(s) are designed to be attached with press fit to a component formed of a first material with a first coefficient of thermal expansion, the first ring (s) being formed of a second material with a second coefficient of thermal expansion different than, preferably lower than, the first coefficient of thermal expansion. At least one seal unit is provided to seal an axially outer side of the bearing assembly and includes a carrier element formed of a third material with a third coefficient of thermal expansion, the third coefficient of thermal expansion is at least as high as the first coefficient of thermal expansion.

Abstract: An elastic bushing includes a core, an outer tube, and an elastomer body disposed between the core and the outer tube. The core includes an inner central portion and a wing extending radially from the inner central portion. In embodiments, the inner central portion and the wing of the core are integrally formed as a one-piece component. In embodiments, a portion of the wing and a curved or bent portion of the outer tube provide an overlap in an axial direction that forms an axial limitation.

Abstract: A metallic bearing body for a sliding bearing includes a main body and a plurality of protrusions extending outward from the main body. Each of the plurality of protrusions extends in a longitudinal direction from the main body to an upper surface that is distal from the main body and has at least one through-bore that extends through the protrusion transversely relative to the longitudinal direction.

Abstract: A bearing assembly includes a bearing, an outer race located radially outward of the bearing and supporting the bearing, a bearing housing located radially outward of the outer race and supporting the bearing and the outer race, and a bearing lubricant drain including a multi-directional passage formed in one or both of the outer race or the bearing housing, the lubricant drain arranged to cause a lubricant to flow from a first location to a second location. The second location is radially outward and axially offset from the first location. A gas turbine engine includes a shaft configured to rotate about a centerline axis of the gas turbine engine and the bearing assembly configured to facilitate the rotation of the shaft.

Abstract: The present invention relates to an air foil journal bearing in which air is introduced between a foil and a rotor rotating at high speed and generates pressure to support a radial load of the rotor and allow the rotor to rotate smoothly, and more particularly, to a housing fixing structure of an air foil journal bearing that improves durability against external impact or vibration by restricting an axial movement of a bump by means of two opposite ends of the bump and a top foil fixing portion.

Abstract: A cast for producing end plates for a pump assembly, the cast comprising a base portion and a pair of projections, the pair of projections providing material to machine bearing assembly housings for accommodating drive and idler shafts in the pump assembly. Also provided is an inner plate bushing for an end plate in a pump assembly, the inner plate bushing comprising a collar extending from a flange, the collar to be inserted into a mounting recess in the end plate with the flange seating flush with a surface of the end plate, the surface area of an end of the collar being larger than an inner surface of the flange.

Abstract: A tripod joint can include a joint outer part with a first longitudinal axis and a cavity running parallel to the first longitudinal axis with an open end, three recesses running parallel to the first longitudinal axis being formed in the joint outer part, and a joint inner part with a second longitudinal axis., The tripod joint can include at least one central body on which three trunnions are formed with trunnion axes extending radially from the second longitudinal axis, wherein a roller body is arranged on each of the trunnions, which roller body has at least one outer ring and an inner ring rotatable therewith about a common axis of rotation, as well as bearing bodies arranged between the outer ring and the inner ring; wherein each roller body is movably received in the recesses along the first longitudinal axis.

Abstract: A sliding assembly (100) for use in a clutch assembly having a housing, including a body portion, preferably in the form of a sliding ring (102) having a central bore (108) extending therethrough, a linear ball guide (130) including an elongated guide pin (132) affixed to the body portion (102), and including an annular groove (136), a detent housing (140) defining a central bore (144), the guide pin (132) extending through the central bore (144) of the detent housing (140) so that the bore (144) of the detent housing (140) and the outer surface (134) of the guide pin (132) defines an annular space therebetween, and a ball bearing assembly disposed in the annular space. The balls (166) are provided in an annular bearing cage (160). The detent housing (140) has a catch portion (150), which is selectively engageable with the annular groove (136) of the guide pin (132).

Abstract: An electro-magnetic coil assembly mounted to a clutch assembly, the electromagnetic coil assembly including a coil mounted within an annular coil housing and a flexible armature plate. The coil assembly adapted to generate an electromagnetic field between the coil and the armature plate for attracting the armature plate to the coil assembly. The flexible armature plate includes an annular plate with an outer edge and an inner edge, the outer edge defining an outer periphery, the inner edge defining an inner periphery. Tangs spaced about the inner periphery extending radially inward from the inner edge. Inner notches spaced about the inner periphery of the annular plate and extending radially outward to a point at least halfway in the radial direction between the inner edge and the outer edge. Outer notches spaced about the outer periphery between and extending radially inward.

Abstract: A pulsation damper for damping pressure medium vibrations in a hydraulic system, has a membrane within a bore of a housing, which membrane is exposed to the pressure medium on its one side and faces a gas-filled cavity inside the housing on its other side, the bore of which is closed by means of a plug. The membrane, in conjunction with the plug and a hollow-cylindrical support body, forms an independently handleable, functionally pre-testable assembly, for which purpose the membrane is substantially cup-shaped, and the support body extends into it.

Abstract: A brake system and a method of performing a release operation with the brake system. The brake system comprises a sliding caliper body and a fixed caliper body. The fixed caliper body has a stop formed therein and accommodates a spindle nut that mates with the stop in a release operation. The brake system comprises a spindle that drives the spindle nut in a second direction during the release operation. Continued translation of the spindle after mating of the spindle nut with the stop drives the sliding caliper body in a first direction opposing the second direction.

Abstract: A pad-holding spring and pad return spring assembly for a brake caliper may have a caliper body adapted to be arranged straddling a brake disc and a one pad-holding spring configured to be arranged between at least one guiding ear of a brake pad housed in the caliper body and the caliper body to bias the brake pad, and a pad return spring configured to bias the brake pad away from a brake disc. The pad-holding spring may have one C-shaped section. The pad return spring may have an anchoring portion operatively connected to the C-shaped section, a coupling portion configured to couple the brake pad, and a linking arm. The coupling portion is elastically movable with respect to the anchoring portion between a retracted resting position and at least one advanced position, towards the disc, and vice versa.

Abstract: A pad liner includes a first pad clip that surrounds and is coupled to a side protrusion protruding in a lateral direction from a brake pad, and a torque support located under the first pad clip and between a side surface of the brake pad and the caliper body. The torque support supports a braking torque. The first pad clip includes a reference surface located on one of a top surface and a bottom surface of the side protrusion, a vertical elastic portion located on an opposite side from the reference surface that pressurizes the side protrusion in a direction of the reference surface, and a clip side portion that connects the reference surface and the vertical elastic portion and surrounds a side surface of the side protrusion. The pad liner minimizes a vertical gap and movement of the brake pad.

Abstract: A pad-holding spring and pad return spring assembly for a brake caliper may have at least one pad-holding spring arranged between at least one guiding ear of a brake pad and a caliper body to bias the brake pad, and a pad return spring. The pad-holding spring has a main extension and at least one C-shaped section. The pad return spring may have an anchoring portion connected to the C-shaped section, a coupling portion to couple the brake pad, and a linking arm connected to the anchoring portion and the coupling portion. The coupling portion is movable with respect to the anchoring portion between a retracted resting position and at least one advanced position, towards the disc, and vice versa. The pad return spring may have at least one winding portion connecting the linking arm to the anchoring portion.

Abstract: A method for making a braking band (2) for a brake disc (1) for a disc brake, comprising the following steps: a) preparing a mold (10) having an inner cavity (11), which comprises a first portion (11a) of a shape corresponding to the braking band (2) to be made; b) preparing a band preform (20) comprising a central layer (200) made of porous ceramic material comprising silicon carbide (SiC), an upper outer layer (201) and a lower outer layer (202), said upper outer layer (201) and said lower outer layer (202) being made of porous ceramic material comprising silicon carbide (SiC) and infiltrated with silicon (SiC+Si), said upper outer layer (201) and said bottom outer layer (202) being arranged in an opposing way and on opposite sides of the central layer (200); c) placing said band preform (20) inside the mold at the first portion (11a) of said inner cavity (11); and d) injecting a liquid or semi-solid aluminum alloy inside the entire inner cavity (11) of the mold (11) so as to infiltrate only the central lay

Abstract: A contact element for contacting at least one long molded part, in particular a cable, in the unassembled state includes a plurality of first windings and a plurality of second windings which are geometrically different from the first windings, and a through-opening for the passage of a long molded part.

Abstract: A spring element includes a body, at least one leaf spring and a stress relieving section. The body includes at least one mounting section. The leaf spring includes a first portion and a second portion. The first portion being secured to the body and at least a part thereof extends angularly with respect to a plane of the body. The leaf spring exerts an urging pressure on an element disposed between the body and a housing as the body is mounted on the housing. The stress relieving section is formed along at least one lateral side of the leaf spring and proximal to the first portion.

Abstract: The invention relates to a method and to a liquid column damping system, in particular for damping vibrations, preferably structural vibrations, comprising a tank filled with a liquid, in which at least three preferably vertical columns of the tank, which are spaced apart from one another, in particular for forming communicating liquid columns, are connected by a base region of the tank that is common to all columns, wherein the tank is rotatably mounted about a vertical axis, in particular on a platform that can be rotated about the vertical axis, and, in directions perpendicular to the vertical axis of rotation, has natural frequencies f1, f2, f3, f4 that differ as a function of the direction, wherein the tank can be tuned in terms of the natural frequency f1, f2, f3, f4 thereof acting for a predetermined direction by rotation about the axis of rotation.

Abstract: A shock absorber includes a gas spring cylinder containing a piston moveable between an extended position and a compressed position within the gas spring cylinder. A mechanical actuator is arranged whereby a bleed port is automatically closed when the gas spring is compressed to a predetermined position corresponding to a desired sag setting. In one embodiment, the position corresponds to a predetermined sag setting whereby the gas spring is partially compressed. In another embodiment, a proper sag setting is determined through the use of a processor and sensor that in one instance measure a position of shock absorber components to dictate a proper sag setting and in another instance calculate a pressure corresponding to a preferred sag setting.

Abstract: A valve adjustment device according to the present invention includes: a shaft having a screw portion on an outer periphery, the shaft being displaceable in an axial direction by rotation in a peripheral direction, the shaft applying displacement to a valve that changes resistance applied to a flow of hydraulic oil (fluid) by transmission of the displacement; a ball received in a hole opening in a radial direction from a side of the shaft; a spring received in the hole and biasing the ball outward from the hole; and a notch case that has a tubular shape, into which the shaft is inserted, and that has a plurality of detent grooves that is provided along the axial direction on an inner periphery to receive the ball fitted thereinto. At least one of the detent grooves is shorter than the other detent grooves.

Abstract: A vehicle includes a conveyor device in which a plurality of rotating bodies whose rotation directions, torques, and angles are controlled is arranged to form a plane and provided such that a freight is loaded on the plurality of rotating bodies, and a controller configured to control the rotation directions, torques, and angles of the plurality of rotating bodies to suppress shaking or movement of the freight loaded on the conveyor device.

Abstract: The present invention belongs to the field of mechanical transmission technology, and proposes a non-orthogonal elliptical toroidal worm gear pair, including an involute cylindrical gear and an elliptical toroidal worm formed by a primary envelope of the involute cylindrical gear; both adopt spatial non-orthogonal transmission, and the shaft angle satisfies the self-locking condition and the restriction condition of minimum tooth top width; the toroidal generatrix of the elliptical toroidal worm is elliptical, which can increase the number of meshing teeth and the total length of instantaneous contact line. A non-orthogonal elliptical toroidal worm gear pair proposed in this invention has the characteristics of toroidal worm drive and can realize the whole facewidth of the gear to participate in the meshing drive.

Abstract: This planetary gear mechanism comprises a plurality of planetary gears having planetary teeth sections on the outer peripheral surfaces, and an internally toothed gear which is provided so as to surround the plurality of planetary gears and the inner peripheral side of which has an internal teeth section that meshes with the planetary teeth sections, the internally toothed gear having a sliding section that slides against the end surfaces of the planetary gears on one side in the axial direction.

Abstract: A ball nut assembly and an end component thereof are provided. The ball nut assembly includes a nut body and an end component. The nut body includes an outer ring wall, a ball groove, an assembling groove, and a fixing hole. The assembling groove is arranged on an end portion, and the assembling groove has a first side surface, a second side surface, and a bottom surface. The end component is accommodated in the assembling groove of the nut body, and includes a first contact surface, a second contact surface, a radial surface, a fixing portion, and a reflow bend. The fixing portion is arranged on the radial surface. The first and second contact surfaces contact the first and second side surfaces of the assembling groove in a force-fit manner, respectively, and two ends of the reflow bend respectively correspond to the ball groove and the reflow channel.

Abstract: A differential for a vehicle includes a final drive gear with a final drive gear spline, a differential carrier with a differential carrier spline, and an axially slidable clutch. The axially slidable clutch includes a first clutch spline drivingly engaged with a one of the final drive gear spline or the differential carrier spline and a second clutch spline for selectively drivingly engaging with the other one of the final drive gear spline or the differential carrier spline. In an example embodiment, the differential also includes a pair of side gears, each including an inner spline for drivingly engaging a respective axle shaft, a pair of radially offset spider gears, each drivingly engaged with both of the side gears, and a shaft extending through the pair of radially offset spider gears into the differential carrier.

Abstract: Methods and systems are described for a gearbox lockout device. It may be desirable in certain vehicles to lock a drive shaft within a gearbox for a period of time. Lockout embodiments under the present disclosure include a shaft configured to selectively engage the drive shaft via teeth. An inner and outer collar surrounding the shaft can be manipulated to restrict the movement of the shaft once the shaft's teeth are engaged with the teeth of the drive shaft. The system can be torqued up and locked in place. This can allow for more safe transporting of the vehicle, easier maintenance, or other advantages.

Abstract: A vehicle drive device includes an internal combustion engine, a power transmission device, and a reinforcing member coupled to both the internal combustion engine and the power transmission device. A seal is arranged between a cylinder head and a cam housing that are adjacent to each other in a direction parallel to an axis of a cylinder. A reinforcing member is coupled to the cam housing. A first fastening portion of the cam housing that is fastened to the reinforcing member is arranged at a position away from a contact portion of the cam housing that contacts the seal in the direction parallel to the axis.

Abstract: A gearwheel arrangement for a transmission of a vehicle, including: a gearwheel configured to be rotatable about an axis of rotation, the gearwheel including a gearwheel body and an annular gear tooth section extending around the gearwheel body, the gear tooth section including a plurality of external gear teeth, wherein at least a part of the gear tooth section extends past a radially outer portion of the gearwheel body in an axial direction of the gearwheel, so that at least one radially inwardly facing surface is provided opposite of the external gear teeth, means for guiding cooling fluid toward the at least one radially inwardly facing surface so as to cool the gear tooth section during rotation of the gearwheel about the axis of rotation.

Abstract: A mobile machine can include a traction powertrain configured to operate on electrical power and which includes a traction motor coupled to a transmission. To lubricate the transmission, the mobile machine can include a lubrication system having a lubricant pump coupled with a pump motor. The traction motor and the pump motor are electrically arranged in parallel with each other. A powertrain sensor monitors rotational motion in the traction powertrain and an electronic controller can generate a lubricant supply command directing the lubricant pump to deliver a first lubricant quantity to the transmission.

Abstract: A planet carrier assembly includes a rotational axis, a carrier and a carrier flange. The carrier has circumferentially spaced first driver elements formed thereon and the carrier flange has circumferentially spaced second driver elements formed thereon. The second driver elements are interconnected with the first driver elements at common contact areas in an interlocking manner. The carrier flange is axially secured to the carrier in an axial direction by plastically deformed material at the common contact areas. In an example embodiment, the plastically deformed material is displaced from the first driver elements or the second driver elements.

Abstract: The disclosure relates to a hydraulic arrangement for actuating hydraulic consumers and for cooling heat sources and/or lubricating component parts, in particular within a drivetrain of a motor vehicle, comprising a reversing pump, by means of which a hydraulic medium can be conveyed in opposite conveying directions, and the reversing pump has a first pump connection and a second pump connection, the hydraulic arrangement comprising an active valve device, the active valve device configured as a 6/2-way valve.

Abstract: Disclosed is a torque-converting or speed-converting variable-speed transmission with at least two gear ratios. Each gear ratios is assigned at least one changeable gear pair. Shifting elements act on sliding sleeves (24) connected to the gear pairs to change these gear pairs. The shifting elements are in engagement with a shift drum (10), which is moveable into defined angular positions and rotatable between these angular positions. The shift drum (10) has an electric-motor direct drive (12), which can rotate it and bring it into the particular defined angular positions. A method used to control such a torque-converting or speed-converting variable-speed transmission is also contemplated.