Abstract: A static bilge pump has a body surrounded by a shell, forming a motive plenum therebetween. Inlets in the front of the shell allow a motive fluid to enter the motive plenum. The motive plenum tapers, decreasing in cross-sectional area along with width as it moves toward its aft, and ends at a motive nozzle. The body houses a suction chamber in fluid communication with a suction inlet that is in fluid communication with the bilge of a boat. Ejectors are positioned proximal to and between the motive nozzle and the discharge outlet. When the static bilge pump is exposed to fluid flow from its front to its stern, such as when a boat is in motion, water enters the motive inlets, filling the motive Plenum and acting as a motive fluid. The motive fluid is ejected at high pressure from the motive nozzle, creating suction at the ejectors and discharging the motive fluid as well as liquid with in the suction chamber out the discharge outlet.

Abstract: An actuation pressure to actuate one or more hydraulic actuators may be determined based on a load on the one or more hydraulic actuators of a robotic device. Based on the determined actuation pressure, a pressure rail from among a set of pressure rails at respective pressures may be selected. One or more valves may connect the selected pressure rail to a metering valve. The hydraulic drive system may operate in a discrete mode in which the metering valve opens such that hydraulic fluid flows from the selected pressure rail through the metering valve to the one or more hydraulic actuators at approximately the supply pressure. Responsive to a control state of the robotic device, the hydraulic drive system may operate in a continuous mode in which the metering valve throttles the hydraulic fluid such that the supply pressure is reduced to the determined actuation pressure.

Abstract: In one aspect, a system for controlling the supply of hydraulic fluid to an implement of a work vehicle may generally include a pump, a control valve coupled to the pump and first and second fluid lines provided in flow communication with output ports of the control valve. The system may also include a pressure control valve provided in flow communication with the second fluid line that is configured to regulate a fluid pressure of the hydraulic fluid being supplied to a hydraulic cylinder of the implement. Additionally, the system may include a bypass fluid line configured to provide a flow path for hydraulic fluid between the pump and the second fluid line that is independent of the control valve and a load sensing line configured to provide an indication of the fluid pressure of the hydraulic fluid being supplied to the hydraulic cylinder.

Abstract: A fluid-operated linear actuator includes a tubular body, a pair of heads, at least one head of the pair of heads is perforated, at least one piston and at least one stem which passes through the at least one perforated head. The pair of heads are locked at the ends of the tubular body by way of retention rings which are integral with the tubular body and are arranged proximate to the ends on the inner surface of the tubular body. The heads are fixed integrally to the retention rings by way of a connection component.

Abstract: A hydraulic apparatus includes a first valve manifold that provides a shutdown capability and a second valve manifold that provides an overspeed control capability. The hydraulic apparatus advantageously further employs a hydraulic appliance that includes a check valve and a bypass apparatus. The hydraulic appliance enables the second valve manifold to additionally provide as an alternative function a redundant shutdown capability, thereby obviating the need to have three separate valve manifolds.

Abstract: A thermal management system includes a first hydraulic system for circulating a first hydraulic fluid at a first temperature and a second hydraulic system for circulating a second hydraulic fluid at a second temperature that is higher than the first temperature. The thermal management system also includes a sealed heat transfer device coupled between the first hydraulic system and the second hydraulic system. The sealed heat transfer device is not in flow communication with either of the first hydraulic system and the second hydraulic system. The sealed heat transfer device is configured to transfer heat from the second hydraulic fluid to the first hydraulic fluid.

Abstract: Example apparatus for regulator heat transfer are disclosed. An example apparatus includes a housing including an inlet, an outlet, a first valve, and a stem disposed therein. The example apparatus includes a vortex generator disposed in the housing. A fluid is to flow from the inlet through the vortex generator. The example apparatus includes a second valve disposed in the vortex generator. In the example apparatus, the vortex generator is to generate heat prior to the fluid flowing through the second valve to the outlet. The stem is to control the first valve and the second valve to regulate an amount of the heat conveyed to the first valve.

Abstract: A release device for releasing another device in an environment includes a housing containing a material matrix. A member is restrained by the material matrix and extends outside the housing. The matrix is a solid in conditions of the environment to hold the member stationary in opposition to predetermined force. The matrix softens at a predetermined softening temperature to permit relative movement between the member and the material matrix. A heating element is disposed to heat the material matrix to the predetermined softening temperature. A method for releasing a device includes attaching the device to a member extending out of the release device. The device remains attached against the predetermined force. The matrix is heated to the softening temperature in response to a communication to permit movement of the member to fully or partially release the device.

Abstract: The invention relates to a clamp (1), in particular for fastening tubular objects to an underlying surface, comprising a clamp band (2), which has a first peripheral end (3) having a first leg (4) and a second peripheral end (5) having a second leg (6), and comprising at least one clip (7, 71), which is arranged on at least one of the legs (4, 6) on a side opposite the other leg (6, 4). The problem addressed by the invention is that of designing such a clamp in a simple manner and provide said clamp economically. This problem is solved in that the clamp band (2) has at least one projection (21), which interacts with the at least one clip (7, 71).

Abstract: The described embodiments provide a subsea connector that is a quickly deployable and reusable. The subsea connector comprises a male and a female assembly that can be connected and disconnected. The male assembly includes a shaft, a sleeve that surrounds the shaft, and bars that are connected to the shaft and are configured to rotate about one axis. The female assembly includes a receptacle into Which the male assembly can fit. Once the male assembly is inserted into the female assembly, the bars can rotate into such a position that the male and female assemblies are connected together. The bars can also be rotated such that the male and female assemblies can be disconnected.

Abstract: Embodiments of a multi-track beam for use in modular assembly systems for office and industrial work stations. The embodiments have four corner tubes, bars, or channels arranged in a rectangular pattern in cross-section and connected in ways that provide improved ability to transmit torque along a long axis of the multi-track beam while providing improved resistance to bending under the forces of the torque. Fastening devices such a jam nuts may be inserted into the tracks to secure accessories to the multi-track beam or to other multi-track beams.

Abstract: A building assembly structure comprises a coupling block fixed on the ground or to a frame so as to fix and extend the frame. The coupling block comprises a body has a first through-hole passing through upper and lower portions thereof, a connection member coupled to a lower portion of the first through-hole, and having a second through-hole formed therein, a fixing plate coupled to the connection member so as to be located on the lower portion of the body, and having a fixing protrusion protruding from a side thereof, and a vibration-proof pad coupled to the upper portion of the body in order to absorb load and shocks applied from above.

Abstract: A bed can include one or more connectors for connecting components of the bed. For example, a frame can include a fastening mechanism for releasably connecting a cross-member to a longitudinal support. Another example includes connectors for connecting and aligning a foundation with a frame.

Abstract: A mounting system employs an X-shaped adapter for mounting a device to a square receiver. Many different devices can include an X-shaped adapter to allow the device to be mounted to any appropriately sized square receiver. A square receiver can be positioned and secured in many different locations to facilitate the use of a variety of devices in such locations. The X-shaped adapter is configured to insert within the opening of the square receiver when the X is aligned with the corners of the opening. Once inserted, the X-shape prevents the device from rotating.

Abstract: A strip of nails for a nail driver has a number of nails connected to one another in order to connect at least two components and each nail has a nail shaft and a nail tip. The nails are made of wood and/or wooden materials and/or bamboo or materials containing palm tissue with a density greater than 0.65 g/cm3 and are connected to severable connecting means which are automatically sheared off when a nail is driven in. The nail tip is a conical round tip. The ratio of the length of the tip of the nail to the smallest thickness of the nail shaft is between 1.5 and 3, in particular between 1.5 and 2.5, and preferably between 1.8 and 2.1.

Abstract: A roof cover fastener may include a cover plate having a planar body with a perimeter. A central aperture may be disposed centrally in the body. A first annular rib may be formed into the body and may encircle the central aperture. A second annular rib may be formed into the body and may encircle the first annular rib. A first channel may separate the first annular rib from the second annular rib. A medial aperture may be disposed in the channel between the first annular rib and the second annular rib. The fastener may also include an auger element having a first end and a second end. A head may be coupled to the first end, and a tip may be coupled to the second end. A thread crest with a thread root may extend from the second end towards the first end.

Abstract: A low-cost method of manufacturing a composite tube assembly having a composite fiber tube connected to metallic end fittings includes placing at least one end fitting on a mandrel, the end fitting including a grip region having a plurality of external surfaces, wrapping a fiber tow around the grip region of each end fitting and the mandrel to form a fiber-wrapped assembly, curing the fiber tow, and removing the mandrel to yield a completed tube assembly. The method may include positioning a plurality of compression inserts around the grip region after some of the fiber tow has been wrapped around the grip region, and wrapping additional fiber tow around the compression inserts and the grip region. The compression inserts may have a rounded outer surface such that an end portion of the tube wound around the compression inserts has a round outer cross-sectional shape.

Abstract: A flexure mechanism may be constructed by joining a first, second, and third material together, wherein the first and second materials are non-flexure materials and the third material is a flexure material that does not have a flexure motion-defining feature. Then, after the joining step, forming a flexure-motion defining feature into the third material. Each of the components of flexure mechanism may first be machined individually and the components may then be joined or assembled in any order. Significant tolerance stack-up may occur during the individual machining operations and joining assembly of the individual components. However, these tolerance issues, miss-alignments or other flaws in the overall assembly may be eliminated in the forming of the flexure-motion defining features as part of flexure mechanism.

Abstract: A thrust foil air bearing includes a bottom plate comprising a coupling portion protruding toward a rotating portion, an intermediate plate arranged above an upper surface of the bottom plate and comprising a bump foil that is elastically deformable and a first through-hole through which the coupling portion passes, and a top plate arranged above an upper surface of the intermediate plate, facing the rotating portion, and comprising a top foil arranged above the bump foil and contactable with the rotating portion and a second through-hole, through which the coupling portion passes, formed at a position corresponding to the first through-hole. The coupling portion couples the bottom plate, the intermediate plate, and the top plate to one another by passing through the first through-hole and the second through-hole. Thus, the thrust foil air bearing may be rapidly assembled without a complicated process such as welding.

Abstract: In a motor, a dynamic pressure gas bearing is prevented from seizing when the motor shaft and a sleeve contact each other. The number of rotations of a rotating body with respect to a case is maintained substantially constant both before and after contact. Auxiliary bearings are arranged in series with the gas bearing. A non-contact detent torque generation mechanism in parallel with the auxiliary bearings suppresses rotation in the auxiliary bearings. The sum of a predetermined detent torque generated by the torque generation mechanism during a rotation suppression time and the friction torque of the auxiliary bearings is smaller than the magnitude of an adhesion-time contact friction torque generated when the motor shaft and sleeve adhere to each other and is greater than the magnitude of a rotation-time viscous friction torque of the dynamic pressure gas bearing while the motor shaft and sleeve are spaced from each other.

Abstract: An object is to provide a motor-incorporation-spindle ball bearing capable of allowing cooling air which enters inside the bearing of the motor-incorporation-spindle to be discharged smoothly out of the bearing without causing turbulent flow inside the bearing, does not cause a retainer easily to be vibrated, and provides a high level of silent operation. A seal plate has a length to allow air to pass through the bearing from an entrance side toward an exit side substantially straightly without resistance. Therefore, the seal plate is less likely to be exposed to unnecessary force when the air passes through the bearing; the seal plate is prevented from wobble and deformation; stable sealing is ensured; the air is discharged smoothly without causing turbulent flow inside the bearing; a retainer is not easily vibrated, and silent operation is maintained.

Abstract: Pipe machining apparatuses and bearing assemblies are provided. In one aspect, a pipe machining apparatus includes a frame, a tool carrier, a first roller bearing and a second roller bearing. The tool carrier is coupled to and movable relative to the frame and defines a race therein. The first roller bearing includes a first shaft and a first roller rotatably coupled to the first shaft. The first roller is at least partially positioned in the race and is rotatable about a first roller bearing axis adapted to remain substantially fixed relative to the frame. The second roller bearing includes a second shaft and a second roller rotatably coupled to the second shaft. The second roller is at least partially positioned in the race and is rotatable about a second roller bearing axis. The second roller bearing is adjustable to move the second roller bearing axis relative to the frame.

Abstract: A roller bearing assembly configured to guide linear movement of a shaft with a polygonal cross section. The roller bearing assembly includes a housing unit, which may contain a centrally-placed hole for mounting the assembly, and a plurality of cavities on the surface of both ends of the housing unit. The bearing assembly further includes a plurality of axially-displaceable roller bearings placed in one or more sets of pairs in the cavities of the housing. The roller bearings contact the shaft to guide movement axially and to resist torque, and thereby prevent the rotation of the shaft relative to the housing unit.

Abstract: A cage for a roller bearing is provided. The cage has a ring-shaped base body with a plurality of pockets for receiving rolling elements. The base body is formed by two side rings arranged in a defined axial distance and by a plurality of pocket elements, which are located between the side rings. Each pocket element has two face sides designed for contacting a rolling element. The connection between the pocket element and each of the side rings is established by at least one beam joined with one of the side rings and the pocket element. The beam is a positive substance joined with one of the side rings and the pocket element and has a ring-shaped or elliptical cross section in a section perpendicular to the longitudinal extension of the beam.

Abstract: A ball bearing retainer holds balls disposed between an inner ring and an outer ring, in pockets formed at a plurality of portions, in a circumferential direction, of an annular body. The annular body includes: annular parts disposed on both sides in an axial direction; and pillar parts that are disposed at a plurality of portions in the circumferential direction and that connect between the annular parts. The pockets are formed by the annular parts and the pillar parts adjacent to each other in the circumferential direction, and allow ball guide. First contact portions of the pillar portions, which contact portions contact with the balls in the circumferential direction, are formed by first planes that extend along the axial direction, and the balls are guided by the first planes.

Abstract: A seal for a bearing assembly, including: a longitudinal axis; a first portion arranged to engage an outer ring for the bearing assembly; and a second portion extending radially inward and in a first axial direction from the first portion. The second portion includes: a first lip arranged to contact a rotatable shaft passing through the bearing assembly; and a second lip located past the first lip in a second axial direction, opposite the first axial direction, and arranged to be separated, in a radial direction, from the rotatable shaft by a first distance.

Abstract: Installation of a bushing into the shift cable end of an automatic transmission, without replacing the entire shift cable end, is accomplished via a method that does not require the use of compression tools and maintains the axial alignment of the bushing with the shift cable end during installation, thus preventing deformation of the shift cable end and bushing during installation, and ensuring the proper coupling of the shift cable end and shift lever. In one particular embodiment of the invention, the bushing may be installed by radially compressing the leading shoulder of the bushing and passing the bushing through the shift cable end, then releasing the leading shoulder of the bushing so that it engages the shift cable end and secures the bushing in place.

Abstract: Disclosed systems couple two rotational shafts in axial alignment with each other such that torque can be transferred between the shafts without undesired loading occurring. A shaft coupling system can include an annular mounting housing positioned around a juncture of two rotational shafts with bearings positioned between the shafts and the housing so that the housing prevents radial motion of the shafts while allowing the shafts to rotate about their common axis. One shaft can be coupled to an engine and the other shaft can be coupled to a shaft-driven device such as a hydraulic pump. One shaft can be smaller in diameter and piloted into a recess in the end of the other shaft. In some embodiments, the two shafts have about the same diameter and are linked via a torque coupler within an annular mounting housing that allows rotation but limits radial motion of the shafts.

Abstract: Vehicle input shafts are disclosed. The vehicle input shafts include a bearing boss, a spline portion, a cylindrical shaft body portion and a drive end. The spline portion includes spline teeth and spline grooves that do not exit directly onto the shaft body. Instead, the spline grooves include blend out fillets that interrupt the spline grooves by providing additional material near the shaft body. The bearing boss includes an increased diameter at a central point along its axial length and decreased diameters at its first and second boss ends.

Abstract: The invention comprises a clutch device having an actuating device, wherein the actuating device has an electrical eddy current brake. The eddy current brake has a brake stator with at least one coil and a brake rotor with a brake region, wherein the brake region has a first layer which is electrically conductive and which has a first lateral face and a second lateral face, the first lateral face facing toward the coil and the second lateral face facing away from the coil. The brake region has a second layer which is magnetic and which is connected to the second lateral face. The invention further comprises a corresponding production method.

Abstract: A bicycle disc brake caliper comprises a first brake pad, a second brake pad, an actuation structure, and a link structure. The second brake pad is arranged to face the first brake pad. The actuation structure moves the first brake pad toward the second brake pad. The link structure is coupled to the first brake pad to transmit a movement of the first brake pad to the second brake pad to move the second brake pad toward the first brake pad.

Abstract: Method of assembling a drum brake device includes positioning a portion of a brake shoe (22) support structure (40, 42) near an opening of a brake actuating cylinder (80); manipulating the support structure (40, 42) so that a window (44) of the support structure (40, 42) is received over a portion of a shoe mount (50); moving the support structure (40, 42) relative to the shoe mount (50) so that the portion of the support structure (40, 42) is received into the brake actuating cylinder (80) and the support structure (40, 42) is engaged by the shoe mount (50) in a manner that the shoe mount (50) restricts movement of the brake shoe (22) in two dimensions and allows selective movement in a third dimension; and securing the brake shoe (22) in an installed position by placing the drum (26) over the brake shoe (22) with the braking surface facing the friction lining.

Abstract: A brake disc includes a basic body with at least one contact surface that has a wearing coat applied thereon. The at least one contact surface of the basic body is pretreated to realize the bond between the searing coat and the basic body. The at least one pretreated contact surface of the basic body has a surface topography that is modified by laser irradiation and has at least one predetermined parameter. A method produces the brake disc.

Abstract: A parking brake, particularly for a vehicle, includes a brake piston, supported to be movable along a longitudinal axis between a braking position and an open position, by which a brake disk is immobilizable by applying a braking force, when the brake piston is in the braking position, a drive unit for moving the brake piston along the longitudinal axis, and a toggle lever interacting with the brake piston and having at least first and second legs. The first and second legs are connected rotatably with a joint element and are actuatable by the drive unit, such that the toggle lever provides the braking force and applies it to the brake piston. An immobilizing device having such a parking brake, as well as a vehicle having the immobilizing device, and a method for immobilizing a vehicle by such an immobilizing device are also provided.

Abstract: A disk brake for a utility vehicle is provided. A brake caliper of the disk brake includes a receiving chamber configured to receive a brake application device with a pivotable brake lever. The brake lever is supported at one end on a bridge supporting at least one brake piston and at the other end on a wall of the brake caliper forming a caliper head. A pivot bearing is provided for supporting the brake lever on the caliper head or the bridge. The pivot bearing includes a receptacle having a circular-arc-shaped cross-section and has a pivoting body configured to be located in the receptacle. The brake lever is retained in such a way that the brake lever is secured against displacement transversely to the pivoting direction of the brake lever by at least one securing element arranged in the region of the pivoting body extending axially on both sides of the securing element.

Abstract: An assembly includes a brake system comprising, a parking brake assembly including a first drive shaft and a second drive shaft. The assembly also includes two or more opposing brake pads, and a rotor extending between the two or more opposing brake pads. During use, the first drive shaft is moved so that a first portion of the brake pad is moved relative to the rotor. The second drive shaft is moved so that a second portion of the brake pad is moved relative to the rotor. One of the first portion of the brake pad or the second portion of the brake pad is moved relative to the rotor before the other of the first portion of the brake pad or the second portion of the brake pad is moved relative to the rotor.

Abstract: An engaging projection formed on a back surface of a pressure plate is inserted into an engaging hole formed in an outside shim plate. A flat surface parts of the engaging projection constituting a side surface thereof are opposed to a linear parts of the engaging hole constituting an inner peripheral edge thereof. When the outside shim plate exists at a neutral position with respect to the pressure plate, the flat surface parts and linear parts are slightly inclined with respect to each other. A rotation of the outside shim plate about an axis of a piston based on a rotation force applied from a leading end face of the piston to the outside shim plate is regulated by line contact between the flat surface parts and linear parts.

Abstract: A brake cooling system for a heavy-duty truck includes an air compressor mounted on a truck-cab chassis that is in fluid communication with a pressurized air reservoir. The reservoir outlet includes an automatic solenoid valve that establishes select communication between the reservoir and an air distribution system. The air distribution system is formed of a network of compressed air tubes having arteries that each extend to a designated brake drum. Whenever the vehicle is traveling above a predetermined speed and the brake pedal is applied, a microprocessor opens the solenoid to deliver cooling air to each brake drum.

Abstract: A shock absorber having an outer tube, an inner tube disposed coaxially in the outer tube and a piston reciprocally mounted in the inner tube. The interior of the inner tubes forms a working chamber for hydraulic oil while an annular replenishment chamber is formed between the inner and outer tubes. An improved base plate and base cage assembly facilitates fluid flow from the replenishment chamber to the working chamber during an extension cycle of the shock absorber.

Abstract: A resetting semi-passive stiffness damper (RSPSD) triggering assembly and a RSPSD and method of use for damping movement of an object. Exemplary embodiments of a RSPSD triggering assembly include, for example, a rotatable disc and a spring-loaded lever arranged between the disc and a slotted channel. A sensor is provided and communicates with a bypass valve on the cylinder. A change in the direction of movement of the disc causes reciprocation of the lever in the channel, which causes the sensor to send open and close signals to the bypass valve. In some embodiments, a single disc may be replaced with two interacting discs. A RSPSD equipped with such a triggering assembly is usable to damp movement of an object of interest.

Abstract: Motion-damping systems and methods that include motion-damping systems are disclosed herein. The motion-damping systems are configured to damp relative motion between a base structure and an attached component that define a gap therebetween. The systems include an at least substantially rigid tubular structure that defines an internal volume and extends within the gap. The systems also include a magnetic assembly and a magnetically active body. One of the magnetic assembly and the magnetically active body is located within the tubular structure and the other of the magnetic assembly and the magnetically active body is operatively attached to a selected one of the base structure and the attached component. The magnetic assembly is in magnetic communication with the magnetically active body such that a magnetic interaction therebetween resists motion of the attached component relative to the base structure. The methods include dissipating energy with the motion-damping system.

Abstract: A toothed belt includes an uneven surface formed due to a weave pattern of a woven fabric or a knit loop pattern of a knitted fabric at a tooth bottom portion between toothed portions.

Abstract: A leaf chain includes a plurality of chain units each having two pins, around which first and second alternate inner plates between outer plates are mounted. The plates form respective apertures where the pins penetrate. Each chain unit has bushings located in the apertures of the first and second inner plates, and first washers disposed between any two adjacent bushings and between the bushings and the outer plates. There are connecting plates located at an outer side of the outer plates and tightly engaged with the pins to prevent the outer plates from being deformed because of a concentration of large force in the outer plates during the transmission. The outer plates have a loose engagement with the pins to prevent the pins and inner plates from being worn away. The first washers help the sealing effect to maintain the preferable stability and transmissibility and prolong the operating life.

Abstract: An inner link plate for a bicycle chain is provided. The inner link plate may have a longitudinal centerline defining a longitudinal direction and comprising a first inner-link end portion including a first inner-link opening having a first inner-link center axis, a second inner-link end portion including a second inner-link opening having a second inner-link center axis parallel to the first inner-link center axis, and an inner-link intermediate portion interconnecting the first inner-link end portion and the second inner-link end portion. The first inner-link end portion may have an extended edge portion extending to be away from the second inner-link end portion in the longitudinal direction.

Abstract: A planet gear includes an annular planet gear ring including an annular planet gear rim. The annular planet gear rim has an inner radius and an outer radius. The inner radius and the outer radius define a rim thickness therebetween. The annular planet gear rim further has a bending stress neutral axis. The bending stress neutral axis radius and the rim thickness define a ratio including values in a range from and including about 3 to and including about 10.

Abstract: An elliptically interfacing gearbox system may include an input plate having a rotation axis and a plurality of input teeth. The gearbox system may include a wobble plate having a wobble axis disposed at a non-zero angle relative to the rotation axis, a rear face, and a plurality of face teeth disposed on the rear face. The wobble plate may further include a first plurality of wobble teeth disposed in a first plane perpendicular to the wobble axis and a second plurality of wobble teeth disposed in a second plane perpendicular to the wobble axis. The second plane may be spaced from the first plane along the wobble axis. The gearbox system may include a stator gear having a plurality of stator teeth and an output plate having an output axis substantially aligned with the rotation axis and a plurality of output teeth.

Abstract: A transmission is connectable to an input member and includes an output transfer gear, first and second transmission input shaft members, first and second countershaft members, a plurality of co-planar gear sets, and a plurality of torque transmitting devices. The torque transmitting devices include a plurality of synchronizer assemblies and a dual clutch assembly. The transmission is operable to provide at least one reverse speed ratio and a plurality of forward speed ratios between the input member and the output member.

Abstract: A coupling assembly is provided for a transmission assembly, in particular for a multiple spider planetary gear transmission, wherein the transmission assembly has two speed-change gear units coupled to each other. A first shaft and a second shaft are coupleable with one of the speed-change gear units, wherein by blocking of one of the shafts two shifting stages of the transmission assembly are shiftable. A third shaft is provided as well as a first shifting element and a second shifting element, each of which couples the first shaft and the second shaft with the third shaft. A third shifting element is provided which can brake and/or block the third shaft.

Abstract: A sun roller of a friction roller-type transmission includes a movable sun roller element (23) capable of moving in an axial direction. Furthermore, the sun roller is provided with a loading cam mechanism which is formed along the circumferential direction of an input shaft (12), the loading cam mechanism having a first cam surface (75), a second cam surface (77) arranged facing the first cam surface (75) and secured to the input shaft (12), rolling elements (63) held between the first and second cam surfaces (75, 77), and an annular holding device (51), and the loading cam mechanism axially displacing the movable sun roller element (23). The holding device (51) has an inside-diameter-surface guiding part (81) for positioning the holding device relative to the input shaft by being fitted over the input shaft, the guiding part being provided to the inside diameter surface.

Abstract: A power strut for raising and lowering a liftgate of an automotive vehicle includes an outer housing tube carrying a first attachment element for attaching the power strut to a vehicle. A spindle bearing an outer thread is rotatable relative to the outer housing tube via an electric motor. The spindle is axially stationary relative to the outer housing tube. A spindle nut having an inner thread meshing with the outer thread of the spindle is displaceable along the longitudinal axis. A nut tube is rigidly connected to the spindle nut and surrounds the spindle. A second attachment element is located opposite the first attachment element. The first attachment element has a first snap structure that is complementary to a second snap structure formed on the outer housing tube. The first and second snap structures non-rotatably secure the first attachment element to the outer housing tube.