Abstract: A gearbox comprising a planetary gearbox with a ring gear, a sun wheel and a planetary wheel carrier, on which at least one planetary wheel is rotatably mounted, which ring gear and sun wheel engage with the at least one planetary wheel; and a first axially shiftable coupling sleeve, which in a first gear position disconnects an input shaft from the planetary wheel carrier, and in a second gear position disconnects the input shaft with the planetary wheel carrier. A second axially shiftable coupling sleeve arranged to connect a gearbox house with the ring gear in the first gear position, and to disconnect the gearbox house from the ring gear in the second gear position. A third axially shiftable coupling sleeve arranged to connect the ring gear with an output shaft in a third gear position, wherein the second axially shiftable coupling sleeve arranged to connect the planetary wheel carrier with the gearbox house in the third gear position.

Abstract: A gearbox includes a planetary gearset, an input shaft coupled to a sun gear of the planetary gearset, and an output shaft coupled to planet gears of the planetary gearset via a carrier. A constant torsion spring is coupled to a ring gear of the planetary gearset. The constant torsion spring is capable of preventing the ring gear from moving when a torque at the output shaft is below a threshold. The ring gear winds the constant torsion spring in response to the torque exceeding the threshold.

Abstract: A disk brake includes a caliper, and a driving unit disposed in a housing attached to the caliper. An attachment portion used to attach the housing to the caliper and a connector used to supply power to the electric motor are protrudingly provided at the housing. The attachment portion is formed in such a manner that a distance between a center of the disk rotor and a portion of the attachment portion located farthest away from the center of the disk rotor in a radial direction is longer than a distance between the center of the disk rotor and a portion of the connector located farthest away from the center of the disk rotor in the radial direction, and a width of the connector in an axial direction of the disk rotor falls within a range of a width of the attachment portion in the axial direction.

Abstract: A helicopter autopilot system includes an inner loop for attitude hold for the flight of the helicopter including a given level of redundancy applied to the inner loop. An outer loop is configured for providing a navigation function with respect to the flight of the helicopter including a different level of redundancy than the inner loop. An actuator provides a braking force on a linkage that serves to stabilize the flight of the helicopter during a power failure. The actuator is electromechanical and receives electrical drive signals to provide automatic flight control of the helicopter without requiring a hydraulic assistance system in the helicopter. The autopilot can operate the helicopter in a failed mode of the hydraulic assistance system. A number of flight modes are described with associated sensor inputs including rate based and true attitude modes.

Abstract: The present structure does not require a knuckle on the vehicle body side, improves rotational accuracy of an input shaft of a speed reduction unit, increases durability of bearings, and suppresses rotation noise of the bearings by improving the supporting structure of the input shaft of the speed reduction unit. In a drive device for an electric vehicle comprising: a speed reduction unit including an input shaft driven by an electric motor; a hub unit rotationally driven by an output member of the speed reduction unit; and a housing accommodating the electric motor and the speed reduction unit, wherein the input shaft of the speed reduction unit is supported by bearings provided at two locations in the axial direction, the drive device is configured such that the bearings provided at the two locations are both supported by the output member, and the housing is provided with a suspension joining portion.

Abstract: An electromechanical actuator includes an actuator housing that contains an electric motor, a flexible printed circuit board placed on the motor and that includes an electrical connection part extending in a plane (PR), referred to as the connection plane, that is generally transverse to the axis of rotation of the shaft of the motor and that has at least two electrical connection holes, and an electrical connector including at least two internal conductive pins, each of which has a free rear electrical-connection end section, and in which, in the assembled position of the electric motor in the housing, each electrical connection section extends axially through a related connection hole of the electrical connection part wherein, before assembly of the motor in the housing, the electrical connection part extends in a plane (PM), referred to as the assembly plane, that forms an acute angle with the connection plane.

Abstract: Systems and methods are provided for an electro-mechanical system. A system includes a plurality of connected modules. A first module of the modules includes an actuator for imparting motion on the electro-mechanical system and a data processor configured to sense a state of the first module and to command the actuator to modify the state of the first module.

Abstract: The Gear Reduction Tricycle Wheel invention provides two methods of operation of a tricycle with the use of a simple locking pin. When the pin is inserted into the wheel, it operates as a standard wheel would. Without the pin in place, the wheel requires about four times less effort to move with a similar reduction in speed. This gives the option to move with superior control up, down, and over difficult terrain and within limited space (indoor, home, daycare). One can get the sensation of a good ride without the required distance. This new design in the wheel includes gears within the wheel where spokes usually are. In the absence of spokes, side disc plates support the tire rim and the gear axles.

Abstract: A clutch management system has a ramp actuator, an inner plate housing, an outer plate housing, and a clutch assembly. The clutch assembly may have a motor, a ratio adaptor, a primary sun gear, a secondary sun gear, a primary planet carrier and a secondary planet carrier. The primary sun gear is in contact with the ratio adaptor and primary planet gears. The primary planet gears are in contact with a ring gear. The primary planet carrier forms part of the ramp actuator. The second sun gear is connected to a housing and a secondary planet gears. The secondary planet gears are also in contact with the ring gear. A secondary planet carrier is connected. to the first plate of the ramp actuator.

Abstract: A torque transmission device for starting an internal combustion engine using a permanently engaged starter motor for a start-stop system. An annular gear connected with the starter motor includes a bearing for decoupling the starter motor from the engine based upon the rotational speed difference between the internal combustion engine and the starter motor. The device includes a freewheel for the speed-controlled coupling of the starter motor to the internal combustion engine so that torque is transmitted between the annular gear and the engine crankshaft. An annular gear carrier is arranged between the annular gear and the freewheel. The bearing and the freewheel are arranged radially relative to each other so that at least the freewheel and the bearing are in communication with an oil chamber of the engine. First and second seal elements are provided for sealing the engine oil chamber of the internal combustion engine.

Abstract: Provided is a hybrid vehicle driving device including: a first differential mechanism configured to be connected to an engine and transmit a rotation of the engine; a second differential mechanism configured to connect the first differential mechanism and a driving wheel; and a switching device configured to shift the first differential mechanism, wherein the second differential mechanism includes a first rotation component connected to an output component of the first differential mechanism, a second rotation component connected to the first rotation machine, and a third rotation component connected to the second rotation machine and the driving wheel, and a reaction torque of the first rotation machine is corrected at a torque phase (S2-Y) after a start of the gear shift operation of the first differential mechanism by the switching device while the vehicle travels by using the engine as a power source (S3).

Abstract: An actuator with multi-stage gears includes a worm gear shaft driving assembly having a worm gear shaft, an electric motor having a transmission shaft, an annulus gear arranged between the worm gear shaft and the transmission shaft, and a plurality of multi-stage gears. The annulus gear includes an inner gear and a moving end actuated cooperatively with the inner gear on two ends thereof. The moving end is connected to and driving the worm gear shaft to rotate; each multi-stage gear is arranged between the transmission shaft and the inner gear; each multi-stage gear includes a first and a second outer diameter portions. The outer circumferential edges of the first and second outer diameter portions includes a helical gear engaged with the transmission shaft and a spur gear engaged with the inner gear respectively. Therefore, the actuator has merits of simplified components and reduced volume.

Abstract: An in-wheel motor driving device includes a wheel braking device. A back plate of a drum brake or a mounting member for calipers of a disc brake constituting the wheel braking device is formed integrally with an outboard-side end member which is fastened to a outboard-side end surface of a housing of a speed reducer section.

Abstract: A hybrid construction machine that enables to efficiently cool a generator motor, while suppressing an increase in the entire length of a power unit. A motor housing is provided with a bulging portion which is configured to axially bulge from the inner periphery of a motor side connection surface toward an engine over the entire circumference thereof around an axis, and to engage with the inside of an engine housing; and a coolant passage which is configured to flow a coolant for cooling a stator therethrough. The inner peripheral surface of the motor housing including the inner peripheral surface of the bulging portion is configured to come into plane contact with the outer peripheral surface of the stator. The coolant passage is disposed at a position axially displaced from the motor side connection surface.

Abstract: A continuously variable transmission is provided. The continuously variable transmission includes an input assembly, an output assembly, an input/output planetary ratio assembly and a torque feedback assembly. The input/output planetary ratio assembly is configured and arranged to set an input to output speed ratio. The input/output ratio assembly has a first portion that is in rotational communication with the input assembly and a second portion that is in rotational communication with the output assembly. The torque feedback control assembly provides an axial load force in response to a torque of a load coupled to the output assembly. Moreover, the torque feedback control assembly is coupled to provide torque feedback to the input/output planetary ratio assembly to at least in part control the input to output speed ratio of the input/output planetary ratio assembly.

Abstract: A power transmission apparatus comprises an input shaft, an output shaft, a clutch device, and an actuator. The clutch device comprises a clutch hub, a clutch housing, a clutch pack, an input side cam mechanism for pressing the clutch pack toward the output shaft, an output side cam mechanism for pressing the clutch pack toward the input shaft, a return spring for urging the clutch pack to have its elements moved away from each other, and a drive shaft having an input side gear for transmitting the driving force of the actuator to the input side cam mechanism, and an output side gear for transmitting the driving force of the actuator to the output side cam mechanism.

Abstract: An in-wheel motor driving device in which a motor section A and a wheel hub bearing section C are connected coaxially in series via a speed reducer section B, whereby an axial dimension of the in-wheel motor driving device is reduced to provide a large inside space of a vehicle as well as an increase in freedom of routing a power supply wires. A terminal box for the power supply wires which supply power to the motor section A is disposed on the outer circumferential side surface of the housing which holds the motor section A. The power supply wires are routed out of the terminal box to an inboard side and are anchored by a power supply wire holder which extends perpendicularly to an axial centerline of the housing.

Abstract: A range switching device includes: a range switching portion having an output shaft rotatably supported inside a housing and switchable to ranges corresponding to output shaft turning positions; a motor attached with its motor shaft spaced apart from a shaft center of the output shaft; a reducer mechanism linked to the motor and the range switching portion; and a control board controlling rotation of the motor. The reducer mechanism has a planetary gear reducer mechanism formed of a sun gear, planetary gears, an internal gear, and a carrier supporting the planetary gears, and a spur gear reducer mechanism formed of a pinion and a main gear linked to the pinion. The control board is installed oppositely to the output shaft and the motor.

Abstract: An in-wheel motor drive assembly includes a motor case defining a motor chamber and a reduction mechanism chamber provided on one side of and isolated from the motor chamber by a partition wall. An electric motor is mounted in the motor chamber. A planetary gear reduction mechanism is mounted in the reduction mechanism chamber, and reduces the rotation of the electric motor and outputs the reduced rotation to a hub ring. The reduction mechanism is lubricated by lubricating oil stored in the reduction mechanism chamber. A tapered oil guide surface is formed at the center of the inner surface of the partition wall facing the reduction mechanism chamber. The oil guide surface guides lubricating oil splashed up by the rotating reduction mechanism and flowing down along the inner surface of the partition wall, onto the rotor shaft of the electric motor, thereby lubricating bearings mounted on the rotor shaft.

Abstract: A drive unit and a rear cushion overlap each other in a vehicle front view. Since the rear cushion is disposed to overlap the drive unit, the dimension in a vehicle width direction can be made smaller than that in the case where the cushion is disposed on the vehicle width center side of the drive unit.

Abstract: Disclosed is an electric bicycle. The electric bicycle includes a hub motor assembly provided at a wheel to supply driving force, an electronic control unit provided in the hub motor assembly, and a wireless communication device mounted to a wheel shaft and electrically connected to the electronic control unit.

Abstract: The electric cart has a main body, wheels at the bottom of the main body and a gear motor to electrically drive the wheels. The gear motor includes a motor having a motor shaft, an output shaft connected to at least one of the wheels, and a gear reduction unit connecting the motor shaft to the output shaft. The gear reduction unit has a helical gear train.

Abstract: An in-wheel motor drive assembly 21 includes: a motor unit A; a speed reduction unit B having an output shaft 28 reducing the rotational speed of the motor rotary shaft 35 and outputting the reduced rotation and a speed-reduction-unit casing 22b forming a contour, and disposed on one axial side of the motor unit A; a wheel hub bearing unit C having a wheel hub 32 fixedly coupled with the output shaft 28 and a wheel-hub-bearing outer ring 22c rotatably supporting the wheel hub 32, and disposed on one axial side of the speed reduction unit B; and coupling portions 63, 64 secured to at least one of the wheel-hub-bearing outer ring 22c and speed-reduction-unit casing 22b to couple with members of a vehicle body.

Abstract: A drive unit for an electric bicycle, the drive unit including a motor configured to generate a rotary force to drive a wheel of the electric bicycle, and a reduction gear unit provided with a plurality of gears to decelerate a rotary force generated from the motor, wherein the motor is provided with a rotor which has an accommodation space formed at a center thereof and a stator installed to surround the rotor while being spaced apart from the rotor by a predetermined interval, and the reduction gear unit includes a first planet gear assembly disposed on an accommodation space inside the motor and connected to the rotor, and a second planet gear assembly disposed outside the motor and connected to the first planet gear assembly.

Abstract: Providing an electric vehicle transaxle suppressing occurrence of wear, seizure, etc. of a one-way clutch as compared to a conventional one. When an electric motor MG is driven and a one-way clutch 34 moves in a rotation axis C1 direction, the one-way clutch 34 comes into contact with a flange portion 46b of an inner race 46 or a supporting portion 30b of a transaxle housing 30 via a sliding washer 74 and, therefore, direct contact is prevented between the one-way clutch 34 and the flange portion 46b of the inner race 46 or the supporting portion 30b and wear, seizure, etc. of the one-way clutch 34 are suppressed.

Abstract: A powered dispensing tool includes a housing, a motor at least partially positioned within the housing, a rack operably coupled to the motor for powered translation, and a transmission selectively operably coupling the motor and the rack. The transmission includes an output shaft rotatable in response to rotation of the motor, and an output member drivably coupled to the rack and supported on the output shaft for relative rotation therewith. The transmission also includes a clutch member coupled for co-rotation with the output shaft and movable along the output shaft between a first position, in which the clutch member is engaged with the output member for transferring torque from the output shaft to the output member, and a second position, in which the clutch member is disengaged from the output member to inhibit torque transfer between the output shaft and the output member.

Abstract: An electric vehicle driving system includes an energy-storage apparatus (1), a first motor (2), a speed regulating motor (3) and a single row planetary mechanism. Said first motor (2) and said speed regulating motor (3) are connected electrically to the energy-storage apparatus (1). The single row planetary mechanism includes a sun gear (4), a gear ring (5) and a planetary carries (6) with planetary gears (7). The planetary gears (7) in the planetary carrier (6) mesh the gear ring (5) and the sun gear (4) separately. The output axle of the first motor (2) is connected to the gear ring (5), and the output axle of the speed regulating motor (3) is connected to the sun gear (4) by a brake (8). The invention takes the speed regulating motor and the single row planetary mechanism instead of the gearbox in a transmission driving system, and achieves a simple and compact structure, easy assemble, light weight, and low manufacturing cost.

Abstract: A modified planetary gear box and arrangement of the gear box with a drive motor permits electrical, optical or other types of cabling or wiring to be passed through the planetary gear box along its axis of rotation. The planetary gear box drives or rotates a reel of coiled tubing. Electrical, hydraulic, optical and other types of line for lowering into a well bore through the coiled tubing is passed through a passageway through the center of the planetary gear box, into one end of a hub of the reel, and then into the coiled tubing, which is injected into the wellbore. The other end of the hub of the reel is able to be connected to a swivel joint that can be connected to a pump for pumping fluid into the coiled tubing.

Abstract: A drive unit having a transmission, which has an input axis and an output axis, which are arranged parallel to one another and spaced apart. In a drive unit of this kind, provision is made for the transmission to be designed as a cartridge which forms a unit and is connected to a support element forming a component part of the drive unit. A drive unit embodied in this way allows quick and easy mounting of the transmission while allowing for the required transmission forces and transmission torques of the transmission. Moreover, the transmission can be embodied in a space-saving way.

Abstract: A ride-on vehicle, such as for a child, includes a vehicle body and one or more wheels that support the vehicle body relative to a surface. At least one of the wheels includes a hub motor arrangement that provides a drive torque for propelling the vehicle. The hub motor arrangement includes a housing defining an interior space. An axle or other mounting element(s) define an axis of rotation of the housing. Preferably, the axle or other mounting element(s) do not pass completely through the housing. A motor drives the housing through a transmission. Preferably, the motor is a standard, compact motor that is positioned on the axis of rotation and can be laterally offset from a central plane of the housing. In some embodiments, a traction element is carried directly by the housing.

Abstract: A transfer case includes first and second output shafts selectively driven by an input shaft. A first gearset is driven by the input shaft providing first and second gear ratios to the first output shaft. A range actuator includes an axially moveable member operable to shift the first gearset between the first and second gear ratios. An actuation shaft is coupled to the axially moveable member such that rotation of the actuation shaft translates the axially moveable member. A second gearset is driven by the input shaft and drives the actuation shaft. The second gearset includes a control gear moveable into and out of meshed engagement with a first gear and an idler gear. The actuation shaft is rotated in a first direction when the control gear is meshed with the first gear and rotated in an opposite direction when meshed with the idler gear.

Abstract: A transmission having a plurality of tilting balls and opposing input and output discs provides an infinite number of speed combinations over its transmission ratio range. The transmission provides multiple powerpaths and can be combined with electrical components to provide motor/generator functionality, which reduces the overall size and complexity of the motor and transmission compared to when they are constructed separately. In one embodiment, rotatable components of a continuously variable transmission are coupled separately to an electrical rotor and to an electrical stator so that the rotor and stator rotate simultaneously in opposite directions relative to one another. In other embodiments, an electrical rotor is configured to transfer torque to or from a disc that is in contact with a plurality of speed adjusters, while an electrical stator is configured to transfer torque to a shaft that is operationally coupled to the speed adjusters via an idler.

Abstract: A transmission device or an electric axle which has improved operational characteristics compared to known solutions. Said aim is achieved by providing a transmission device (1) including an electric motor (3) provided with a rotor (6), a planetary gear (4) provided with at least one sun gear (9), and a shaft arrangement (7,8), the rotor (6) being coupled in a rotationally fixed manner to the sun gear (9) by the shaft arrangement (7, 8). The shaft arrangement (7,8) includes at least one compensation interface (21) which is designed such that it is possible to change the distance and/or tilting between the motor (6) and sun wheel (9).

Abstract: Illustrative embodiments of angle impact tools are disclosed. In at least one illustrative embodiment, an angle impact tool may comprise a motor including an output shaft configured to rotate about a first axis, an impact mechanism configured to drive rotation of an output drive about a second axis that is non-parallel to the first axis, and a gear assembly configured to be driven by the output shaft of the motor and to drive the impact mechanism, the gear assembly comprising a planetary gear set coupled to the output shaft of the motor.

Abstract: A speed change device comprising an inner race having an outer surface, an outer race having an inner surface, and set of orbital rollers including inner rollers in rolling contact with the outer surface of the inner race and outer rollers in rolling contact with the inner surface of the outer race.

Abstract: A device for controlling and/or regulating the electromechanical actuator of a planetary gear assembly includes commutation electronics that are designed as an electronic circuit board and are arranged in a housing, directly on a solenoid ring of the electromechanical actuator. The housing accommodates the planetary gear assembly and the device that electromagnetically actuates the same. The solenoid ring is formed by annular solenoids that can be actuated in turn in the circumferential direction of the solenoid ring by the commutation electronics.

Abstract: A driven hatch arrangement is provided, particularly a rear hatch arrangement, for a motor vehicle with a hatch and with a hatch drive for opening and/or closing the hatch, with the hatch drive comprising a motor with a motor shaft and a motor pinion and at least one planetary gear with a sun gear, planetary carriers with planetary rolling elements arranged on bearing pins, and an annulus, with the sun wheel of the planetary gear being formed by the motor pinion and a driven shaft being driven via the planetary gear, in which the driven shaft is embodied in one piece with a planetary carrier including the bearing pins for planetary rolling elements.

Abstract: A driven hatch arrangement is provided, particularly a rear hatch arrangement, for a motor vehicle with a hatch and with a hatch drive for opening and/or closing the hatch, with the hatch drive comprising a motor with a motor shaft and a motor pinion and at least one planetary gear with a sun gear, planetary carriers with planetary rolling elements arranged on bearing pins, and an annulus, with the sun wheel of the planetary gear being formed by the motor pinion and a driven shaft being driven via the planetary gear, in which the bearing pins of the planetary gear projecting beyond the planetary rolling elements arranged on the bearing pins in the direction towards the motor.

Abstract: A multi-speed hub drive wheel (MDW) is provided. The MDW includes first and second gears; a clutch shaft having a clutch collar disposed thereon, wherein the clutch shaft drives the clutch collar between a first position in which the clutch collar engages the first gear, a second position in which the clutch collar engages the second gear, and a third position in which the clutch collar maintains the MDW in neutral; a drive shaft having a first spline disposed thereon; a clutch disk equipped with a yoke, wherein the yoke and the clutch disk slidingly engage the first spline; and a clutch motor which drives the clutch shaft.

Abstract: A driven hatch arrangement is provided, particularly a rear hatch arrangement, for a motor vehicle with a hatch and with a hatch drive for opening and/or closing the hatch, with the hatch drive comprising a motor with a motor shaft and a motor pinion and at least one planetary gear with a sun gear, planetary carriers with planetary rolling elements arranged on bearing pins, and an annulus, with the sun wheel of the planetary gear being formed by the motor pinion and a driven shaft being driven via the planetary gear, in which the motor pinion is slid onto the motor shaft.

Abstract: A planetary gear transmission is disclosed, which comprises a planetary gear train having a sun gear, a fixed annular gear, at least one planet gear and a planet carrier; a synchronizer configured to be driven into a first coupling state in which it couples the sun gear with a prime mover, and a second coupling state in which it couples the planet carrier with the prime mover; and an actuator configured for selectively driving the synchronizer into one of its first and second coupling states. An electric vehicle comprising such a planetary gear transmission is also disclosed.

Abstract: An electric drive for a motor vehicle is disclosed that comprises an electric motor and a drive unit drivable by the electric motor. The drive unit has a planetary drive and a differential drive 9, which are arranged coaxially to a rotational axis A. The planetary drive comprises a ring gear, a sun gear, a plurality of planet gears as well as a planet carrier. The ring gear is rotatingly driveable by the electric motor around the rotational axis A. The sun gear is supportable or supported relative to a stationary component against rotation. The planet carrier is connected to a differential carrier of the differential drive so as to transmit torque thereto. A motor vehicle with such an electric drive is also disclosed.

Abstract: A power-shiftable multi-stage transmission in planetary design, between a drive shaft and an output shaft, in particular an automatic transmission for a vehicle. The multi-stage transmission has two parallel shaft sections, six shift elements, at least two spur-gear stages and three planetary gear sets, each of which has one sun gear, one ring gear, and one planet carrier having a plurality of planetary gears. The planet carrier is united in a carrier, and the two shaft sections can be connected to one another via the at least two spur-gear stages. Different transmission ratios between the drive shaft and the output shaft can be implemented by selective engagement of the six shift elements such that a plurality of forward gears, in particular nine forward gears, and at least one reverse gear, can be implemented.

Abstract: A drive unit with a planetary gear mechanism includes a stationary housing. A drive motor is eccentrically positioned on an end face of the stationary housing. A preliminary gear stage of the drive unit includes (i) an externally toothed spur gear shaft operatively connected to an output shaft of the drive motor, and (ii) an internally toothed gear that is operatively connected to the spur gear shaft, and that is coaxial with and is further operatively connected to a sun gear shaft. A hub housing is mounted on the stationary housing by at least two bearings, and has at least one integrated internal gear. At least two planetary stages are positioned downstream of the sun gear shaft, and are configured to transmit converted torque of the drive motor to the hub housing via the at least one integrated internal gear.

Abstract: A deceleration device is used for a directly electromechanically actuated planetary gear assembly in a seat adjustment mechanism. The deceleration device is integrated into the structural unit consisting of the planetary gear assembly and the electromechanical actuator therefor. Also described is a method for operating a deceleration device for a directly electromechanically actuated planetary gear assembly in a seat adjustment mechanism.

Abstract: A starter motor for an engine includes a housing and a planetary gear assembly. The housing defines an interior space. The planetary gear assembly is at least partially positioned in the interior space and includes (i) a sun gear having a first number of gear teeth equal to a pitch diameter of the sun gear, (ii) a ring gear having a second number of gear teeth equal to a pitch diameter of the ring gear, and (iii) no more than two planet gears each connected to a planetary gear carrier. Each planet gear of the no more than two planet gears has a third number of gear teeth equal to a pitch diameter of the no more than two planet gears.

Abstract: A planetary gear set module having planetary gear set and a biasing member. The biasing member may exert a biasing force on a component of the planetary gear set and may permit the component to rotate when sufficient torque is provided to overcome the biasing force.

Abstract: An electric motor is arranged on a reduction device, and a wet braking device which gives braking force to a motor shaft is arranged on an upper end side of the electric motor. The wet braking device has a brake case which accommodates an upper end portion of the motor shaft, an adapter which is detachably disposed to the motor shaft in the brake case, a plurality of rotating side brake disks and a plurality of non-rotating side brake disks arranged on an outer peripheral side of the adapter and a brake piston which gives braking force to the motor shaft by frictionally engaging the rotating side brake disks and the non-rotating side brake disks with each other. At the time of performing a maintenance operation for the wet braking device, the wet braking device alone can be solely removed while keeping the electric motor assembled to the reduction device.

Abstract: A planetary gear arrangement for a seat adjustment mechanism, includes at least one inner, externally toothed fitting part and an outer, internally toothed fitting part, which fitting parts are pivotable in relation to each other about a pivot axis. An external toothing of the inner, externally toothed fitting part rolls along an internal toothing of the outer, internally toothed fitting part. A plurality of electric magnetizing coils are arranged annularly on the outer, internally toothed fitting part, the magnetizing coils being activatable alternately in an encircling manner in the circumferential direction of the outer, internally toothed fitting part such that the magnetic field of each magnetizing coil acts on the inner, externally toothed fitting part and sets the latter into a rotatory movement relative to the outer, internally toothed fitting part.

Abstract: In compact drive, spiroid gear unit, and method for manufacturing a drive unit that includes at least an electric motor, a brake, a gear unit, and a frequency converter, the output shaft of the gear unit and the rotor shaft are positioned in parallel to each other, and the shaft-center distance is determined by at least one gear stage. The first gear stage includes a first toothed member connected to the rotor shaft, and a second toothed member, which engages with the first toothed member and is connected to an intermediate shaft, the brake, including at least a brake-rotor shaft, being integrated in the housing of the compact drive, the brake-rotor shaft being parallel to the rotor shaft, and the brake-rotor shaft being connected to a toothed member, which engages with the second toothed member.