Abstract: A multi-function band and method therefore having a material formed into a body and an adjuster coupled with the body and accessible to the user wherein the user can use the bands as is for applications or withdraw a variable portion of the adjuster causing the material to be gathered into a formation for use in applications.

Abstract: A latch assembly is provided according to the present application, which includes a latch body and a guiding plate. The latch body is provided with a latch end configured to connect a device, and the guiding plate is provided with multiple positioning holes, the latch body is provided with multiple convex embedding blocks matching with the multiple positioning holes respectively, the latch body is further provided with a damper, and after the multiple embedding blocks of the latch body are inserted into the multiple positioning holes respectively, the damper clamps the guiding plate to achieve the connection. The latch assembly has a simple and compact structure, occupies a small volume, can be assembled and disassembled conveniently with a high efficiency, saves operation time and operation efforts.

Abstract: An insert for use in a sandwich-type structure is provided that includes a housing defining an internal bore, a proximal flange, opposed distal flanges, and an exterior wall portion extending between the proximal flange and the opposed distal flanges. The opposed distal flanges define lateral walls arranged tangentially with a wall of the internal bore. A nut is disposed within the internal bore of the housing and configured to float therein, the nut defines a truncated flange and a hollow shaft extending from the truncated flange. The hollow shaft of the nut defines internal threads and an exterior wall, the exterior wall having a diameter at least equal to a thread lock diameter. A cap is configured for engagement with the opposed distal flanges such that the nut is floatingly captured within the internal bore of the housing.

Abstract: A coupling assembly includes first and second components with mating protrusions including shape memory polymer protrusions with different shape configurations. The components are assembled by engaging the protrusions with a temporary shape configuration at a first level of retention force. The protrusions are heated above the transition temperature to recover a permanent shape configuration, and cooled to provide a second level of retention force at the permanent shape configuration.

Abstract: A clamp for clamping an object having an aperture therethrough to a member is disclosed. The clamp passes through the aperture when clamping the object to the member. The clamp has a head portion defining a channel adapted for receiving an edge of the aperture; a body portion extending from the head portion; and a tail portion extending from the body portion. The tail portion has a member contacting surface shaped for wrapping around at least a portion of a perimeter of the member. A vehicle having a windshield clamped to a frame member using at least one such clamp is also disclosed.

Abstract: Provided is a method for resistance spot-welding at least two overlapping steel sheets. When an electrode force F after an electric current supply is started changes from an initial electrode force Fi to an electrode force Fh(1) while a lapse from the start of the electric current supply is between 20 ms and 80 ms inclusive, a suspension of the electric current supply of from 20 ms to 60 ms inclusive is started. Then the electric current supply is resumed when the electrode force F reaches an electrode force Fc(1).

Abstract: A piece of furniture includes a rectangular frame for supporting a plurality of sinuous springs. A plurality of clip assemblies are secured to opposed side walls of frame. Each clip assembly comprises at least two metal fasteners, each having a generally planar head and a shank for insertion into the frame. The generally planar head of each metal fastener is encased by plastic of a non-metallic piece. The non-metallic piece has a hook to secure one end of a sinuous wire. Connectors may be formed with the plastic or non-metallic pieces to join multiple clip assemblies.

Abstract: Provided is a single-groove and short-tail pulling rivet and an erection method thereof, and the pulling rivet comprises a single groove and a short tail having a broached groove with a continuous and smooth cambered surface, and is characterized by easy manufacturing, low cost and convenient erection. The broached groove is an arc surface with three sections of different radiuses, which solves stress concentration and sticking of a single-groove and short-tail rivet during riveting, and allows a claw of a riveting machine to be engaged to the best position automatically. The tooth profile of a locking groove section of the rivet is a curve combining an arc and a straight line, which greatly improves fastening force.

Abstract: A connection assembly including a grommet of hollow construction adapted to be retained within a retaining panel structure for attachment to a substructure. The grommet includes an upper collar and a lower collar disposed in spaced-apart relation. An axial bore extends through the grommet. Anti-rotation elements may be disposed between the upper and lower collars. The anti-rotation elements lock the grommet against rotational movement following insertion and rotation to a locking position within a complementary retaining panel opening. The grommet may carry variations of a compression limiter within the axial bore of the grommet and either an elongated fastener or a fastening nut may be secured in operative position with the grommet prior to shipment and installation.

Abstract: A Blind nut may be mounted on a hole of a mounted member. The blind nut includes a main body with a plastically deformable material and a nut member with a relatively harder material. The main body has a cylindrical first tubular portion and a second hexagonal and cylindrical tubular portion provided adjacent to first tubular member. A flange is provided adjacent the second tubular member. Nut member includes a short cylindrical nut base member. Nut tubular members are adjacent nut base member and have a smaller outer diameter than that of the nut base member. A female threaded pass-through hole extends across the length of the nut member. The nut cylinder members are inside the first tubular member and the second tubular member; and the lower edge of the main body tubular member is in contact with a step member of the nut base member and welded thereto.

Abstract: In one preferred form of the present invention, there is provided hook system 10 for hanging school bags 18. The hook system 10 comprises: a body 10 providing a series of protective recesses 14 each having a projection 16. Each projection 16 allows a school bag to be hung therefrom using a top hanging strap 20 of the school bag 18. Each protective recess 14 shields the corresponding projection 16 to assist with preventing personal injury or eye damage associated with a person accidently moving towards the projection.

Abstract: An eyehook includes a main hook, a gate, and a switch. The main hook includes a first portion, a second portion, and has an opening thereon. The gate is pivotally connected to the second portion, and movable between a first and a second position. When the gate is moved to the second position, the opening is closed. A first main body is clad in a first insulating coat which has a first abutting portion. The switch is pivotally connected to the first portion, and movable between a third and a fourth position. A second main body of the switch is clad in a second insulating coat. The switch abuts against the first abutting portion when moved to the third position to prevent the gate from moving toward the first position. The switch includes a covering portion covering the first abutting portion when the gate is moved to the first position.

Abstract: A motor vehicle transmission cable attachment device includes a body having a slot receiving a pin in a body sliding direction transverse to a pin longitudinal axis. A member has a portion displaced at least partially into the slot when the pin is received in the slot, the portion thereafter preventing release of the pin from the slot. A lock supported on the body is moved between a lock disengaged position to a lock engaged position when the pin is received in the slot. A lock-out slide is moved from a first position wherein a lock-out slide portion is received in a lock cavity in the lock disengaged position to a second position when the pin is received in the slot. The second position has the lock-out slide portion positioned outside of the lock allowing the lock to be displaced to the lock engaged position.

Abstract: The movable joint assembly includes a housing which extends along an axis and has an outer surface and an open interior. A ball stud is partially disposed in the open interior and projects out of the housing. A flexible and elastic boot is sealed against the outer surface of the housing and against the ball stud. A metal insert is at least partially embedded within the boot adjacent an end of the boot for resisting pull out of the boot from the housing. The boot includes a lip which is at least partially spaced axially from the insert and extends radially inwardly and is in an interference fit engagement with the outer surface of the housing for establishing a fluid tight seal of the housing and for maintaining the fluid tight seal in response to injection of a lubricant into the open interior of the housing.

Abstract: By randomly arranging dimples provided on a sealing face, a sliding characteristic is improved in a wide range of a bearing characteristic number on the sealing face. A pair of sliding parts in which a plurality of dimples is arranged on at least one of sealing faces that relatively slide on each other is characterized in that each of the plurality of dimples is provided independently from the other dimples, and arranged in such a manner that the plurality of dimples having different opening diameters is randomly distributed.

Abstract: The present invention provides a tapered roller bearing used in a planetary gear speed reducer, and including an outer race, and a retainer formed with a first annular portion, a second annular portion, and pillars. At least one retainer guiding surface (raceway) which guides the retainer in the radial direction is formed only on the inner periphery of the outer race. Guided surfaces are formed at least either on the pillars or on the first and second annular portions, and guided by the at least one retainer guiding surface. Therefore, it is possible to guide the axial central portion or both side portions of the retainer, to make the retainer less likely to tilt due to a centrifugal force, and to apply a preload to both side surfaces of the outer race.

Abstract: This abnormality diagnosis system is provided with: a bearing comprising a plurality of constituent members; a sensor that is installed on a constituent member and detects signals from the surroundings; and an abnormality diagnosis device that diagnoses, on the basis of signals output from the sensor, abnormalities in the rolling bearing or in a device located at the periphery of the rolling bearing.

Abstract: For the purpose, a physical quantity regarding a bearing body is detected by a detection sensor provided in the bearing body, and detection information of the detection sensor is transmitted by a wireless transmitting unit provided in the bearing body via wireless communication. At this time, the detection information is transmitted at a first transmission interval when the detection information is smaller than a threshold value and is a normal value, and the detection information is transmitted at a second transmission interval that is shorter than the first transmission interval when the detection information is the threshold value or larger and is an abnormal value.

Abstract: A bearing can include a generally cylindrical sidewall, a flange extending radially from the generally cylindrical sidewall, and a feature extending radially from the generally cylindrical sidewall at a location disposed a distance from the flange. An assembly can include the beating and a structure having an opening with a relief portion adapted to receive the feature.

Abstract: A sliding bearing may include vertically-arranged half members obtained by halving a cylinder, wherein a narrow groove is provided circumferentially to both axial direction ends of a lower half member at a downstream side of a rotational direction. A peripheral section may be formed on a surface on an outer side of the narrow groove. The peripheral section may be formed to have a height from an outer peripheral surface of the half member that is shorter than a height of a contact surface from an outer peripheral surface of the half member. An inclined part that is inclined toward an inner peripheral side is provided to a downstream side end, of the narrow groove, and a coating layer is provided to an inner peripheral surface of the half member only part of an inner peripheral surface of the narrow groove including an inner peripheral surface of the inclined part.

Abstract: An assembly providing a bearing, a lubricant and a contamination sensor for determining a level of contamination in the lubricant. The sensor includes an EM wave generator for generating an EM signal, and an EM sensing element arranged in contact with the lubricant. The EM sensing element receives the generated EM signal and transmits an output signal whose properties are responsive to real and imaginary parts of a complex relative permittivity of the lubricant. The output signal is received by an EM measuring device that measures first and second parameters of the output signal, which are respectively representative of the real and imaginary parts of the complex relative permittivity. The EM measuring device determines a level of water contamination in the lubricant, based on the measured first parameter alone and determines a level of metal particle contamination in the grease, based on the measured first and second parameters.

Abstract: A propeller shaft has a first yoke having a fixing portion, a pair of first bifurcated yoke portions extending from one end portion of the fixing portion in an axial direction, and a first bearing hole formed at each first yoke portion and securing therein a first bearing that holds a cruciform shaft; a second yoke coupled to the first yoke through the cruciform shaft and secured to a predetermined member, and having a mounting flange, and a bolt insertion hole which is formed at the mounting flange and into which a bolt to secure the second yoke to the predetermined member is inserted; and a securing member securing the mounting flange of the second yoke to the predetermined member through the bolt by a fastening tool. Each first yoke portion is provided with a first concave portion that slides thereon an outer circumferential surface of the fastening tool.

Abstract: A disconnect mechanism includes a shaft that rotationally couples a prime mover and a driven element together. The disconnect mechanism also includes a first bearing that rotationally supports the shaft and a first seize ring rigidly attached to the shaft. The first seize ring coaxially surrounds at least a portion of the shaft. The disconnect mechanism also includes a housing that retains the first bearing. The housing includes a first contact member that is fixed with relation to the shaft. The first contact member is concentrically spaced from the first seize ring during the normal operation of the shaft and selectively contacts the first seize ring when the centerline control of the shaft is not maintained. The disconnect mechanism also includes a torque activated disconnect element that rotationally decouples the prime mover and the driven element from one another when the first seize ring contacts the first contact member.

Abstract: The invention relates to a gear shift device for a motor vehicle transmission, comprising a first and a second gearbox component which are rotatable relative to each other around a gearbox axis, a friction ring which is connected to the first gearbox component comprising a conical frictional surface, a plurality of first disks and a plurality of second disks. The first and second disks form a multi-disk clutch, the first disks being coupled to a synchronization element in a rotationally fixed manner, and the synchronization element comprising, axially adjoining the conical frictional surface of the friction ring, a conical mating surface for speed synchronization between the first gearbox component and the first disks. Further, the first disks are designed as a synchronization disk where the synchronization element is integrally formed thereon and/or one of the first disks is designed as a disk support coupling all first disks in the circumferential direction in a form-locking manner.

Abstract: A vehicle transmission includes a transmission shaft, a friction element assembly mounted on the transmission shaft, a piston assembly for actuating the friction element assembly, a snap ring for retaining the friction element assembly and a mounting groove formed in the transmission shaft. The snap ring is installed into the mounting groove by expanding the snap ring and then allowing the snap to contract and enter the mounting groove. The mounting groove is located such that the snap ring could exit the mounting groove upon expansion of the snap ring due to a centrifugal force. Accordingly, various arrangements are provided to prevent the snap ring from leaving the mounting groove after installation.

Abstract: An interrupter includes: an intermittent member having a meshing tooth meshing with a second rotary member, and moving in an axial direction between a coupled position and an uncoupled position; and an actuator making the intermittent member move in the axial direction. The actuator includes: a coil generating magnetic flux; and a plunger moving with the intermittent member in the axial direction. The plunger is disposed in a manner capable of making relative rotation to one of the first and second rotary members via first and second air gaps. When the coil is energized, the magnetic flux is introduced to the plunger from one of the first and second air gaps, the magnetic flux is led out of the plunger to the other air gap, and the plunger moves in the axial direction so as to reduce at least one air gap of the first and second air gaps.

Abstract: A wedge clutch assembly for selectively engaging or disengaging an inner and outer hub including first and second wedge plate segments arranged radially between the inner and outer hubs, the first wedge plate including a first inner circumferential surface having an increasing radius in a first circumferential direction and the second wedge plate segment including a second inner circumferential surface having a decreasing radius in the first circumferential direction, and, third and fourth wedge plate segments arranged radially between the first and second wedge plate segments and the inner hub, the third wedge plate segment including a first outer circumferential surface in contact with the first inner circumferential surface and the fourth wedge plate segment including a second outer circumferential surface in contact with the second inner circumferential surface.

Abstract: A decoupler is provided for rotationally driving a generator of an auxiliary-unit belt drive of an internal combustion engine, including: a pulley, a hub, and two bearing points, at which the pulley is rotatably supported on the hub, a series arrangement of a helical torsion spring and a one-way clutch, which allows the hub to overtake the pulley, and a spring plate, which is rotationally fixed in relation to the pulley or the hub, for the one spring end and a spring plate, which can be rotated in relation to the pulley and the hub, for the other spring end. The spring ends, which lie against ramp steps of the spring plates, radially expand the helical torsion spring as the driving torque is transmitted. The frictional torque, produced in one of the bearing points when the hub is overtaking, acts on the rotatable spring plate in a direction of rotation of the rotationally fixed spring plate.

Abstract: Overrunning, non-friction coupling and control assemblies, a switchable linear actuator device and a reciprocating electromechanical apparatus for use in the assemblies are provided. The device and apparatus control the operating mode of at least one non-friction coupling assembly. The device and apparatus have a plurality of magnetic sources which produce corresponding magnetic fields to create a net translational force. The net translational force comprises a first translational force caused by energization of at least one electromagnetic source and a magnetic latching force based upon linear position of a permanent magnet source along an axis. One or more cams are utilized to control whether a locking member either couples or uncouples its corresponding coupling assembly.

Abstract: An improved expanding friction disk for use in a clutch of a power transmission system. The improved expanding friction disk accommodates multiple clutch pack configurations including clutch packs utilizing novel improved friction disks, is compatible with wear liners and operates with reduced friction including a reduced difference between the static and dynamic coefficients of friction in the ramp mechanism.

Abstract: A clutch for an automatic transmission includes a tubular housing surrounding a clutch pack and having an end for engaging with a pressure plate. An annular separator spring on the end provides a biasing force against the pressure plate. A plurality of depressible pins are disposed in the housing and are located radially outward from the annular spring for inhibiting radial movement of the separator spring.

Abstract: A brake actuator for brakingly engaging a brake block or pad (9) with a rotating part of a vehicle has spring means (24) creating a linear brake force. An eccentric mechanism (21, 23, 25) is arranged in a brake force transmitting chain from the spring means (24) to the brake block or pad (9), and there is a motor (2) for controlling the angular position of an eccentric (25) in this mechanism and thus the brake force transmitted from the spring means (24).

Abstract: A disc guard assembly for use in shielding a disc of a rear disc brake system on a motorcycle is provided. The disc guard assembly may include a disc guard, which may be plastic, and a carrier adapter, which may be metal. The carrier adapter may be removably attached to a rear brake carrier mount of the rear disc brake system of the motorcycle via one or more fasteners, and the disc guard may be removably attached to the carrier adapter via one or more fasteners.

Abstract: A brake actuator comprises a housing having an end wall and a pushrod projecting through an opening in the end wall and terminating at a movable plate in the housing. A spring is enclosed in the housing and surrounds the pushrod. At least one unitary resilient member is disposed on the push rod proximate to the end wall and partially extends through the opening for centering the spring around an axis of the pushrod and restricting contamination into the housing. The unitary resilient member comprises a central aperture and an annular flange surrounding the central aperture. At least one section of a collar radially outward from the annular flange has a thickness less than half of the annular flange thickness for constraining movement of the spring and the push rod in a radial direction.

Abstract: A disc brake assembly includes a brake clip having a U-shaped section and at least one extension portion. The U-shaped section has a base leg and opposing upper and lower legs extending from the base leg. The at least one extension portion has an application portion, a transition portion with first and second legs, and a bend connecting the first and second legs. The transition portion extends in a first direction from a side of the U-shaped section. The first and second legs extend in a direction other than the first direction. The bend redirects the application portion from a second direction to a third direction. The second direction is angled from the first direction.

Abstract: A method for maintaining a brake system in a vehicle with a hydraulic vehicle brake and an electromechanical brake device with an electric brake motor includes preparing the brake system for maintenance operations by actuating the electric brake motor to displace a transmission member into a retracted position that is remote from a brake starting position in which a brake lining is located adjacent to a brake disk of the wheel brake device. The method further includes actuating the electric brake motor to displace the transmission member in the direction of the brake starting position after completion of the maintenance operations.

Abstract: A vehicle braking system includes a piston rod extendable from an air brake chamber, a rotatable cam shaft, and a slack adjuster coupled to the piston rod and the cam shaft. The slack adjuster is configured to rotate the cam shaft as the piston rod extends. The slack adjuster has a control gear coupled to the cam shaft such that the control gear rotates as the cam shaft is rotated. A pinion gear meshes with the control gear such that the pinion gear rotates as the control gear rotates, and a take-off gear meshes with the pinion gear such that the take-off gear rotates as the control gear rotates. A magnet coupled to the take-off gear is configured to rotate as the take-off gear rotates. A sensor is configured to sense rotation of the magnet, and an indicator is configured to indicate brake stroke of the piston rod.

Abstract: The invention is directed to a heat shield structure (8) for a wheel (1) which comprises a base structure (11) that is at least partially made from a composite material. The heat shield structure (8) is arranged on the base structure (11) and is at least partially covering the base structure (11).

Abstract: Provided is a device for detecting thickness of a brake pad, comprising a support body, a conducting wire or a resistor body, further comprising a conducting wire provided outside the support body, and possibly further comprising a resistor, some or all of the conducting wire, resistor body, and resistor are connected to form a circuit in a certain structure, and the conducting wire or the resistor body on the support body is rubbed together with the brake pad within a certain thickness range of the brake pad. By the present invention, the range of the thickness dimension of the brake pad can be determined, or the thickness dimension of the brake pad can be continuously reflected within a certain range.

Abstract: A thermosetting resin composition includes a lignin derived from a lignocellulose, a lignocellulose fiber derived from the lignocellulose, and a thermosetting resin. In the thermosetting resin composition, the lignin derived from the lignocellulose and the lignocellulose fiber derived from the lignocellulose are dispersed in the thermosetting resin.

Abstract: A lower-side spring receiving member is adapted to receive a compression spring provided with an effective part, end turn parts which do not elastically deform, and rising parts located between the effective part and the end turn parts, at a lower side of the compression spring. The lower-side spring receiving member is provided with a contact part which is formed to protrude outward from an end at one side in the extending direction thereof, and which is in contact with the rising part so as not to form a gap between the contact part and the rising part. The contact part is in contact with the rising part of the compression spring by an elastic force caused by elastic deformation, regardless of a load on the compression spring.

Abstract: A bush for a vehicle includes: an inner cylindrical member; a substantially cylindrical rubber member provided outside the inner cylindrical member; and a substantially cylindrical metal spring member inserted between the inner cylindrical member and the rubber member. A gap portion for allowing the metal spring member to be elastically deformed in a radial direction of the metal spring member is provided between the inner cylindrical member and the metal spring member. The bush for a vehicle works such that when impact force belonging to a relatively low vibration frequency area or impact force resultantly accompanied with great displacement is inputted into the bush for a vehicle, mainly the rubber member absorbs vibrations; and when impact force belonging to a relatively high vibration frequency area is inputted into the bush for a vehicle, mainly the metal spring member absorbs vibrations.

Abstract: The vibration suppression system includes a vibration isolator located in each corner in a four corner pylon mount structural assembly. The combination of four vibration isolators, two being forward of the transmission, and two being aft of the transmission, collectively are effective at isolating main rotor vertical shear, pitch moment, as well as roll moment induced vibrations. Each opposing pair of vibration isolators can efficiently react against the moment oscillations because the moment can be decomposed into two antagonistic vertical oscillations at each vibration isolator. A pylon structure extends between a pair of vibration isolators thereby allowing the vibration isolators to be spaced a away from a vibrating body to provide increased control.

Abstract: A hydraulic strut system that damps vehicle vibration and includes a compressible fluid, a strut, and a valve plate. The strut includes three concentric tubes defining an inner cavity, an intermediary cavity, and an outer reservoir cavity, the inner cavity and intermediary cavity being fluidly coupled, wherein the inner cavity receives a piston that divides the inner cavity into a first volume and a second volume, the piston having an aperture that allows one way flow from the first volume to the second volume. The valve plate is removably coupled to the strut, and includes a first fluid path that allows one-way fluid flow from the intermediary cavity to the reservoir cavity, the first fluid path including a damping valve that damps fluid flowing therethrough; and a second fluid path that allows one-way fluid flow from the reservoir cavity to the inner cavity, the second fluid path further including a replenishment valve.

Abstract: A regulable vibration damper may comprise a cylinder barrel that contains hydraulic fluid in a sealed manner, a piston that can be moved axially within the cylinder barrel along a cylinder barrel axis and that subdivides the cylinder barrel into two working chambers, a piston rod that is oriented parallel to the cylinder barrel axis and is connected to the piston, a valve assembly arranged at a fluid feed through to damp piston movement in an actuating direction, and a bypass duct between the two working chambers. The bypass duct may comprise a first throughflow cross section for a first throughflow direction, wherein the first throughflow cross section differs from a second throughflow cross section for a second throughflow direction. Further, the bypass duct may be formed, at least in part, by an outflow passage that is arranged on an exit side of a pilot valve for adjusting pilot pressure.

Abstract: A vibration damper for a vehicle chassis may comprise a damper tube, a piston rod that is movable in an oscillating manner in an axial direction in the damper tube, a working piston disposed on the piston rod, and a closure package that closes the damper tube and through which the piston rod is guided. A spring element that is disposed in a region between the working piston and the closure package may comprise an annular basic body that surrounds the piston rod to form an annular chamber, an upper side facing the closure package, and a lower side facing the working piston. To reduce vibrations and noise from reaching a vehicle body, the spring element may include a lip element on the upper and/or lower side, and a spring rigidity of the lip element may be lower than a rigidity of the annular basic body.

Abstract: A hydraulic damper assembly including a housing that extends about and along an axis and defines an interior wall and a chamber for holding a fluid. A piston assembly is disposed in the chamber and axially moveable therein. The piston assembly includes a core. A wear band is disposed about the core and has an inside surface and an outside surface. The inside surface of the wear band defines at least one groove in fluid communication with the chamber for allowing the fluid to bias the wear band toward the interior wall of the housing during the passage of the fluid though the at least one groove during movement of the piston assembly.

Abstract: Pressure-sensitive vales are incorporated within a dampening system to permit user-adjustable tuning of a shock absorber. In one embodiment, a pressure-sensitive valve includes an isolated gas chamber having a pressure therein that is settable by a user.

Abstract: A plate link chain for a continuously variable transmission of a motor vehicle. The chain is formed from longer and shorter chain links that are formed from and that include respective longer and shorter link plates that are coupled to each other by pairs of rocker pressure members. Both the shorter link plates and the longer link plates have at least one longitudinally extending external appendage.

Abstract: A rotary axis module includes: an input shaft connected to a drive motor; an output shaft, an output shaft flange connected to the output shaft; parallel gears coupled to the output shaft flange; at least two double gears; and a transfer gear that transmits the power of the drive motor to the double gears. The at least two double gears and the transfer gear are disposed so as to surround the output shaft.