Abstract: A two-way clutch comprising an input system rotational member (10) adapted to be rotatably driven by a driving source, an output system rotational member (60, 140) for taking out outwardly a torque transferred from the input system rotational member (10), and a torque transferring member (50, 150a,150b) interposed between the input system rotational member (10) and the output system rotational member (60, 140) for selectively making the two rotational members engage and disengage each other, wherein in order to perform securely torque transfer and cut off between the input and output systems and avoid any influence of an external force applied from the output system during torque transfer, the torque transferring member (50, 150a, 150b) is adapted to transfer torque in both forward and backward rotating directions while it engages the input system rotational member (10) and the output system rotational member (60, 140) and the output system rotational member (60, 140) is adapted to freely rotate only when the

Abstract: A rotation transmission device is mounted in a drive train of a four-wheel drive vehicle to selectively distribute driving force to selected vehicle wheels according to the travel condition of the vehicle. This device includes an outer ring and an input shaft. A cylindrical face is formed on one of the opposed surfaces of the outer ring and the input shaft, while cam faces are formed on the other opposed surface to define a wedge-shaped space between the cylindrical face and each cam face. Rollers are mounted in pockets formed in a retainer mounted between the input shaft and the outer ring. An electromagnetic clutch is coupled to the retainer. A switch spring is mounted between the retainer and the input shaft. A two-way clutch is provided between the outer ring and the input shaft.

Abstract: A friction clutch with at least one flywheel mass and a clutch housing with which there is associated a pressing arrangement for a pressing plate which is provided for the action of pressure on one side of a clutch disk the opposite side of which is supported on a counter pressure surface. Furthermore, a disengager is provided by which, upon its movement, the pressing arrangement can be functionally connected with or separated from the clutch disk. The disengager is connected by a disengagement mechanism to the pressing plate by which the movement of the disengager can be transformed into an axial movement of the pressing plate.

Abstract: An electro-mechanical clutch actuator is provided for disengaging a clutch of a transmission. The clutch actuator includes an assist spring for reducing the amount of motor torque required for operating the clutch actuator. The clutch actuator also includes a self adjustment feature which accommodates for clutch disk wear.

Abstract: An adjustment mechanism for use with a driven clutch of continuously variable transmission has an adjustor ring that receives a first end of a spring. A follower plate be carried by one of the pulley halves has a surface to interact with the other pulley half. The follower plate receives the adjustor ring. A holding element, a set screw in a preferred embodiment, retains the adjustor ring in a position relative to the follower plate. The mechanism allows rotation of the adjustor ring relative to the follower plate to adjust the spring force.

Abstract: A vehicle driveline clutch using a ball ramp actuator supplying a clamping force on a clutch disc in response to an electromagnetic field where the clutch clamping force is maintained and increased with clutch slip using a plurality of one-way clutches acting in a pair of planetary gearsets with a one-way clutch acting on each planet gear and supported on a carrier ring which is frictionally connected to a ball ramp control ring upon energization by a clutch coupling with an electrical coil thereby creating relative rotational motion between the control ring and an actuation ring causing a plurality of rotational elements to travel along identical opposed variable depth ramps thereby creating an axial separation force between the control ring and the actuation ring generating the clamping force on the clutch disc.

Abstract: A clutch assembly using a ball ramp actuator supplying a clamping force on a clutch disc in response to an electromagnetic field where the clutch clamping force is maintained and increased with clutch slip using a ball ramp mechanism having a control ring and an actuation ring. A bias spring acting to maintain contact between a clutch member and the coil plate of the control clutch. Activated by a control clutch having a response to electrical current introduced into a coil thereby creating an electromagnetic field in a coil pole which attracts a coil plate which in turn applies a cone clutch thereby introducing a rotational torque on the control ring to activate the ball ramp mechanism. The bias spring is used to force the clutch plate toward the coil pole thereby minimizing the air gap between the clutch plate and coil pole thereby providing a more controllable engagement of the clutch assembly.

Abstract: A vehicle driveline clutch using a ball ramp actuator supplying a clamping force on a clutch disc in response to an electromagnetic field where the clutch clamping force is maintained and increased with clutch slip using a plurality of one-way clutches acting in a pair of planetary gearsets with a one-way clutch acting on each planet gear and supported on a carrier ring which is frictionally connected to a ball ramp control ring upon energization by a clutch control unit of an electrical coil thereby creating relative rotational motion between the control ring and an actuation ring causing a plurality of rolling elements to travel along identical opposed variable depth ramps thereby creating an axial separation force between the control ring and the actuation ring generating the clamping force on the clutch disc.

Abstract: An actuator for automated operation of a friction clutch includes a drive that is connected with an input part of a gearing and an output part of the gearing that is movable into operative connection via a transmission member with a disengagement bearing of the friction clutch. The transmission element has a pitch region rotatable for driving an engagement element into force-applying contact with a disengagement bearing for displacing the disengaging bearing and thereby disengaging the clutch.

Abstract: A vehicle driveline clutch using a ball ramp actuator including a ball ramp mechanism supplying a clamping force on a clutch disc in response to an electromagnetic field where the clutch clamping force is maintained and increased with clutch slip using a planetary gearset having an annulus connected to rotate with a clutch ring and a sun gear connected to rotate with the transmission input shaft.

Abstract: A retractable cord take-up reel comprises a drive shaft and a first reel mounted on the drive shaft. The first reel has a central opening and a first side. A drive shaft gear is mounted on the drive shaft, and rotating the drive shaft gear causes the drive shaft to rotate. A first drive gear is mounted on the drive shaft between the first reel and the first drive shaft gear. The first drive gear has a central opening and a first side facing the first reel and a second side facing the drive shaft gear. One of the first side of the first reel and the first side of the first drive gear has an angled surface, and the other of the first side of the first reel and the first side of the first drive gear has a cog facing the one first side. The one first side has two steps for engaging the cog. A first one of the steps is at a low location on the angled surface, and a second one of the steps is at a high location on the angled surface.

Abstract: The invention relates to a coupling unit having a viscous coupling A and a friction coupling B. The coupling housing 29 of the friction coupling B is connected to the input and the hub 12 of the viscous coupling A to the output. Between the end face of the housing 17 of the viscous coupling A and the end face of the pressure plate 28 of the friction coupling B there are provided setting means 27 in the form of ramps. Up to a predetermined torque value, the torque is transmitted from the coupling housing 29 to the hub 12, i.e. it is transmitted only by the viscous coupling A to the hub 12 and the plug-in shaft connected thereto, and after the predetermined torque has been exceeded, torque is additionally transmitted by the friction coupling B via the coupling hub 48 to the plug-in shaft also connected to the latter.

Abstract: A low cost drive transmission system provided with one-way clutch having a simple assembly and not requiring precision parts. A drive shaft 31 and a shaft 45 are connected via a link cam 30. A main cam 34 is formed on the drive shaft 31 and the link cam 30 is moved in a thrust movement along the free shaft 45 by the cam effects of the guide surfaces 50a, 50b, 53a, 53b between the link cam 30 and the main cam 34. The link cam 30 engages with an engagement pin 50 formed on the shaft 45, thus transmitting the driving of the drive shaft 31 side. Conversely, when the shaft 45 rotates faster in the advancement direction than the rotational velocity transmitted from the drive shaft 31, a thrust movement along the free shaft 45 in the opposite direction is exerted on the link cam 30 as a result of actions opposite to the above and the engagement with the engagement pin 50 is broken.

Abstract: The invention is in a torque responsive actuation device, preferably for a belt drive system as is commonly utilized with snowmobile and like type vehicles. A bearing carrier of the invention is connected to a lower half of a split pulley, with the upper pulley half mounting a helix or cam cone that extends towards the carrier undersurface and includes a plurality of cam tracks formed therein that are each to receive a cam follower for travel therealong. Movement of the bearing carrier towards the top face of the pulley upper half is thereby translated to lower the pulley half to spread the pulley upper and lower halves apart, opening a V slot therebetween wherein a drive belt is maintained. A cylindrical shaft is journaled through the bearing carrier and fitted through the pulley that includes a coil spring disposed therearound for providing spring biasing to urge the bearing carrier away from the pulley upper half, biasing the pulley halves together.

Abstract: A ball ramp actuator having first and second actuation plates with a control plate disposed therebetween where a plurality of circumferential variable depth grooves are formed in a first face of the first actuation plate and in first and second faces of the control plate where the grooves formed in the first face of the control plate are directly opposed to the grooves formed in the second face of the control plate where the actuation grooves and the control grooves form opposed pairs of grooves having a rolling member disposed within each pair of grooves for axially separating the first and second actuation plates from the control plate as the rolling members traverse their respective grooves such that the rolling members contacting the first face of the control plate directly oppose the rolling elements contacting the second face of the control plate to provide a balanced axial force on the control plate.

Abstract: A clutch device with a cam mechanism is provided, which is free from drag loss when the phase is switched from a state wherein the cam mechanism is operative to a state wherein it is inoperative. A cam groove 1c and a recess 1d are formed on the inner surface 1a of a piston, and a cam groove 3c and a projection 3d to be inserted into the recess 1d are formed on the inner surface 3a of a pressure plate 3. Between the cam grooves 1c and the 3c is interposed a cam roller 2 loosely retained by a roller cage 4. When the hydraulic pressure is applied to the back surface 1b of the piston 1 while a C.sub.3 clutch disk 5 rotates faster than the piston 1, the cam mechanism is operative to carry out the engagement operation. On the contrary, when the application of the hydraulic pressure is interrupted while the C.sub.3 clutch disk 5 rotates slower than the piston 1, the engagement is released. Meanwhile, the riding of the cam roller 2 over the cam elements is avoidable by the recess 1d and the projection 3d.

Abstract: A friction clutch between an engine and a transmission in a motor vehicle has a diaphragm spring with prongs which are moved axially by a bearing in order to disengage the clutch. The bearing is mounted on an actuating device including a driven part carried by a support on the transmission case and a driving part which can be rotated by a clutch pedal. The actuating device can be moved axially by a first ramp assembly having complementary ramps on the support and the driven part. A second ramp assembly forms part of a wear compensating unit which automatically changes the axial position and/or the orientation of the diaphragm spring to compensate for wear at least upon the friction linings of the clutch disc forming part of the clutch. The second ramp assembly can include mating internal and external threads. A third ramp assembly is defined or carried by the driving and driven parts of the actuating device.

Abstract: A ball ramp actuator having a control ring axially separated from a pressure plate by rolling members engaging matching opposed grooves having a variable depth acting to supply an axial clamping force against a clutch disc in a clutch assembly and a releasable one-way clutch having a first race attached to the control ring and a second race attached to the pressure plate acting to only allow relative rotation between the control ring and the pressure plate in a direction to increase the clamping force on the clutch disc until a release coil is energized to release the one-way clutch thereby allowing the control ring to rotate relative to the pressure plate in a direction to decrease the clamping force on the clutch disc. A control coil is used to apply an electromagnetic force on the control ring to activate the ball ramp actuator.

Abstract: A bi-directional clutch particularly suited for hand-powered applications where motion is imparted to a pulley. The device includes a pair of wedge-shaped circular plates each of which is urged to a disengaged or idle position under the force of gravity when no motion is being transmitted. Imparted rotational movement in either direction brings an angled surface of a driving plate into contact with a corresponding angled surface of a driven plate which motion pushes an opposite surface of the driven plate into contact with a side surface of the pulley for transmitting corrresponding rotation.

Abstract: A device for actuating a system such as a clutch or a gearbox associated with an engine, particularly a motor vehicle engine, and comprising control element (26-31) and an actuation member (38). According to the invention, the device furthermore includes:a first shaft (4) rotationally driven by the engine;a second shaft (6) integral with the actuation member;coupling member (10, 13, 15, 16, 33) for coupling the second shaft to the first shaft under the action of the control element;a member (16, 32, 33; 48, 53) for uncoupling the second shaft from the first shaft after the second shaft has rotated through a predetermined angle; anda return spring (35) for returning the second shaft to its initial position after it has been uncoupled from the first shaft.

Abstract: A transfer case includes a clutch assembly having both a disc pack clutch and cone clutch disposed in mechanical parallel between the main transfer case shaft and secondary output shaft. The disc pack clutch includes a plurality of interleaved discs and an electromagnetic operator which effects compression of the clutch pack to transfer torque from the main transfer case shaft to a chain drive sprocket, through a chain, to the secondary output shaft. The cone clutch is disposed adjacent the disc pack and is also actuated by the electromagnetic operator. One of the cone clutch elements is driven by the main transfer case shaft and the other cone clutch element provides power to the drive chain and, in turn, to the secondary output shaft. Preferably, the other cone clutch element is integrally formed with the chain drive sprocket.

Abstract: A lever operated tool, such as a chain hoist, is provided with a free wheel mechanism allowing a lift wheel to be selectively disconnected relative to a driving gear in response to rotations of a manual control knob. The knob controls sliding movement of a driven gear mounted for rotation with the lift wheel between first and second positions in which it is engaged with and removed from engagement with the driving gear.

Abstract: A clutch/brake assembly for a machine having a rotating output shaft and a fixed mounting plate which includes an input disc coupled to the output shaft for rotation therewith and moveable axially relative thereto, an output disc moveable axially relative to the output shaft and rotatable relative thereto and a brake member fixed to the mounting plate and adjacent the output shaft. A high friction pad is mounted on the output disc for coupling the output disc to the input disc and for arresting the rotation of the output disc upon engagement with the brake member. Springs urge the input disc axially away from the output disc the output disc axially into engagement with the brake member.

Abstract: A differential drive assembly for differentially transferring rotational power from a source of input power to a pair of output shafts without the use of internal gears. The assembly includes a drive member adapted to be rotatably driven by the source of input power. First and second auxiliary members are provided, each having an inner face located in opposition to a respective planar face of the drive member. The auxiliary members are rotatably and axially moveable with respect to the drive member over a predetermined range. First and second clutch assemblies, preferably constructed of a plurality of interleaved frictional plates, are selectively engageable by movement of the auxiliary members to transfer the rotational power from the drive member to an associated output shaft. Cam mechanisms are provided to axially move a respective auxiliary member such that engagement of a respective clutch assembly may be selectively effected.

Abstract: The retainer is a circular cam follower plate having therethrough three arcuate slots arranged coaxially of the axis of the plate. Each of the slots has a roller follower mounted in one end thereof for rotation about an axis extending transversely of the associated slot. The axes of the roller followers lie in a common plane disposed approximately coplanar with one side of the plate so that part of each roller is positioned within its associated slot, and the remainder projects beyond said one side of the plate. This permits the plate to be substituted for corresponding original equipment plates used in the clutches of continuous variable transmission of the type employed in snowmobiles, and the like, without requiring replacement of the associated cam which drives the follower plate.

Abstract: A hub lock device for converting a vehicle between four-wheel and two-wheel drive, the hub lock being actuated by automatic actuation or manual actuation. A sliding clutch ring that engages and disengages the wheel and axle is trapped in a cage. An extender bar from the cage has a hook end that hooks over the edge of a nut. The nut is moved between inner and outer positions by a manual dial. In the outer position, the nut forces the cage, through engagement of the hook end, to the position whereat the clutch ring is urged to interlock the axle and wheel. In the inner position the nut releases the cage, i.e., the hook can extend between an inner and outer position, to permit automatic actuation. The automatic actuation includes cam actuation wherein the spindle nut provides the cam actuator and brake surface for secondary cam actuation.

Abstract: The invention in a torque responsive actuator device for a belt drive system as is commonly utilized with snowmobile and like type vehicles. An actuator cover plate of the invention is connected by rods to a lower half of a split pulley, with the upper pulley half mounting a helix or cam cone extending towards the actuator cover plate undersurface that includes a plurality of cam tracks formed therein that are each to receive a cam follower for travel therealong that extends from the actuator cover plate undersurface. Movement of the actuator cover plate towards the top face of the pulley upper half is thereby translated through the rods to spread the pulley upper and lower halves apart, opening a V slot therebetween to a drive belt that is maintained therein.

Abstract: A ball ramp actuator for applying a driveline clutch clamping force to a clutch disc using an axial movement created when a control ring is rotated relative to an adjacent activation ring where rolling elements are disposed in opposed variable depth grooves formed in the control ring and likewise in the activation ring and where the rolling elements establish a variable axial separation distance, the ball ramp actuator also having a primary control clutch and a secondary control clutch where upon energizing an electromagnetic coil the primary control clutch energizes the ball ramp actuator and where the secondary control clutch frictionally couples a transmission input shaft to a pressure plate and also frictionally couples the control ring to the activation ring thereby establishing a relatively constant clutch clamping force.

Abstract: A first ball ramp actuator having a control ring acting with an activation ring to supply an axial clutch clamping force in a vehicle driving mode and a second ball ramp actuator using the control ring acting with a clutch pressure plate to supply an axial clutch clamping force in a vehicle coast mode where one side of a one-way clutch is attached to the control ring and another side is attached to a support bracket that is frictionally coupled to a transmission input shaft to maintain an energized rotational relationship with the activation ring when in the coast mode.

Abstract: A ball ramp actuator having a control ring acting with an activation ring to supply an axial driveline clutch clamping force in a vehicle driving mode and a one-way clutch acting on the activation ring to maintain the clamping force when in a vehicle coast mode where one side of a one-way clutch is attached to the control ring and another side is attached to a support bracket that is frictionally coupled to a transmission input shaft to maintain an energized rotational relationship with the activation ring when in the coast mode.

Abstract: A power transmitting assembly includes a first rotatable assembly, a second rotatable assembly having an axially movable rotating member, a camming assembly for moving the rotating member and an electromagnetic clutch for activating the camming assembly. The rotating member is moved between a first position where the first rotatable assembly operatively engages the second rotatable assembly and a second position where the first rotatable assembly is disengaged from the second rotatable assembly. The power transmitting assembly is shown in three forms--a locking hub assembly, a lockable differential assembly and axle assembly having an axle disconnect.

Abstract: The invention is directed to a clutch actuating device for use in a vehicle drivetrain subassembly having a clutch. The clutch actuating device comprises first and second rotating members which are rotatably mounted to a drive member of a vehicle drivetrain subassembly. The first and second rotating members are rotatable relative to the drive member, and are also rotatable relative to each other. First and second clutch loading members are also rotatably mounted to the drive member, and relative to one another, with the first and second clutch loading members engaging one another to cause axial translation relative to one another upon relative rotation therebetween. First and second pilot clutches, including at least one rotatable plate, are coupled to one of the first or second rotating members. The pilot clutches are selectively grounded to cause relative rotation between the first and second rotating members, which in turn causes differential rotation of the clutch loading members.

Abstract: A connecting system which includes a pilot clutch brought into an engaged state by an actuator, a cam member operated by an engaging force of the pilot clutch, an urging member driven and moved by the cam member, and a main clutch brought into an engaged state by a movement of the urging member. The cam member includes a first cam ring restrained by the pilot clutch, a second cam ring provided on the urging member, and rolling members interposed the first and second cam rings for converting the relative rotation of the cam rings into a thrust. The system further includes a biasing member for biasing the urging member and the first cam ring in a direction of abutment against each other in order to generate a frictional force between the urging member and the first cam ring. Thus, it is possible to prevent the engaging force of the main clutch from being influenced by a drag torque produced in the pilot clutch.

Abstract: A ball ramp mechanism for generating a clutch disc clamping force is disclosed where an activation ring having ramped grooves is connected to a flywheel driven by a prime mover and a control ring having ramped grooves opposing those formed in the activation ring is frictionally connected to a transmission input shaft by a friction shoe contacting a friction ring nonrotatably attached to the transmission input shaft loaded by a centrifugal weight which is pivotally mounted to a coupling link which extends from the control ring.

Abstract: A cone-type clutch is provided having a cone-shaped housing coupled to a drive shaft for engaging a cone-shaped friction cone coupled to a driven shaft to establish a driving connection between the shafts. The clutch is activated by rotating two actuating levers relative to each other to engage opposing ramp surfaces and separate the actuating levers axially in order to force contact between the cone-shaped housing and friction cone.

Abstract: A loading cam device is constructed of a first cam surface, a second cam surface, a ring-shaped retainer disposed between the first and second cam surfaces and defining pockets at angular intervals, and rolling members maintained in contact with the first and second cam surfaces while rotatably held within the respective pockets. The circumferential width of each pocket is smaller at each side of the retainer but greater along a thicknesswise central axis of the retainer, both compared with the outer diameter of the rolling members. As an alternative, the thickness of the retainer is a little smaller at a location adjacent to each pocket but significantly smaller at a location remote from the pocket, both compared with the thickness the outer diameter.

Abstract: The invention relates to a transmission device between two coaxial rotating members (1; 10), of the type comprising a viscous-fluid coupling (11) with a driving element and a driven element, and control devices for modifying the operating characteristic of this coupling. It is defined, in particular, in that the control devices are incorporated into the transmission device and act as a function of the rotational speed of one the said members and as a function of a torque transmitted by the device. The control devices can comprise flyweights (21) which are rotationally integral with the member (1) and with the case (12) of the viscous-fluid coupling, these flyweights acting to modify the internal pressure in the coupling (11), via shuttles (27) and a sliding sleeve (8) which is displaced as a function of the torque transmitted between the sun gear (2) and the output shaft (10). This sliding sleeve can, for example, act on a plate (16) which modifies the spacing between the disks (14, 15) of the coupling.

Abstract: A gearbox switchable under load, has at least two parallel shafts to achieve different transmission stages. The shafts both carry gears which permanently engage each other in pairs. Each one of the gears may be connected to its associated shaft via a friction coupling which is switchable by an axially effective operating assembly. The operating assembly includes at least one first adjusting ring which is rotatable and axially fixed relative to the shaft. Also, the operating assembly has at least one second pressure ring which is non-rotatable and axially movable relative to the shaft. The rings are arranged relative to each other and rotate a limited angular amount. The opposed end faces of the pressure ring and adjusting ring are provided with circumferentially extending groove pairs to accommodate at least three rolling members. The depths of the groove pairs are variable in opposite directions. The pressure ring acts, via an axial pressure bearing, on the friction coupling.

Abstract: A vehicle brake having an electrically powered actuator and a parking brake is provided which, in a preferred embodiment, includes an electric motor with a rotor torsionally associated with the actuator for applying brake shoes, springs for returning the brake shoes to a released position, a first friction plate torsionally associated with the rotor, a second friction plate for selective mating with the first friction plate, torsionally fixed with respect to the rotor, a parking brake actuator, a parking brake shaft powered for rotation by the parking brake actuator, and a cam associated with at least one of the friction plates and the parking brake shaft whereby rotation of the parking shaft translates into relative motion between the friction plates to position the friction plates together to lock or release the vehicle brake.

Abstract: An anti-theft steering shaft lock on an automotive steering column including a first clutch element on a rotatable steering shaft and a second clutch element on a stationary part of the steering column. The first clutch element has notches accessible in the direction of the centerline of the steering shaft and the second clutch element has axial lugs for engagement in the notches. The second clutch element is mounted on the stationary part of the steering column for bodily movement in the direction of the centerline of the steering shaft between locked and unlocked positions relative to the first clutch element. An annular control element is rotatably supported on the stationary part of the steering column around the second clutch element and has a circumferential cam slot which receives a radial lug on the second clutch element such that rotation of the control element effects bodily shiftable movement of the second clutch element between its locked and unlocked positions.

Abstract: A clutch/brake mechanism designed for use in a power driven system which delivers relatively high braking and driving power while avoiding simultaneous engagement of the clutch and the brake includes a device for actuating the clutch and the brake such that the clutch is effectively engaged by relatively slight actuation of the actuator device and the brake is effectively engaged by relatively considerable actuation of the actuator device.

Abstract: A lever-operated hoist having a structure for continuously lowering the lower hook side chain and end side chain of load chains in no-load state comprising a pressure drive member movably screwed in the axial direction on a drive shaft, a rotation limiting member spline-fitted on the drive shaft adjacently to the pressure drive member, and an operation wheel rotatably disposed on the rotation limiting member, a first projection and a second projection extending in the radial direction are disposed at specified intervals in the circumferential direction at the outer end face in the axial direction of the pressure driving member, two circumferential spaces are divided and formed by them, and the rotation limiting protuberance of the rotating limiting member and the pressure release protuberance of the operating wheel are projecting into these two spaces.

Abstract: A vehicle has a motor with a shaft extending from each end to drive a pair of opposed wheel axles connected to a pair of wheels. Each wheel axle extends into an axle housing. There is a control cylinder in each housing connected to rotate the wheel axle. The control cylinder acts as a driven clutch and is engaged by a pressure plate. A ring gear in each housing is journaled to the wheel axle. The ring gear has a cam face that engages a cam face located on the pressure plate which has a clutch face and a cam face. The pressure plate is journaled to the wheel shaft. A cam on the face of the ring gear and the clutch plate moves the ring gear and the clutch plate axially apart and this action forces the faces of the pressure plate and the driven clutch together.

Abstract: A clutch control mechanism, for manoeuvring an actuating member such as a clutch release bearing, comprises a support member, a tubular driving member, a tubular driven member having a mounting means and, between the driving member and the driven member, camming means of the helical ramp type.The said mounting means comprises a first sleeve adapted to penetrate into the interior of the actuating member and to carry internally one of the cams, while the driving member penetrates into the interior of the sleeve and carries the other cam, the sleeve having an external radial flange, which acts as an abutment for the clutch release bearing and which is coupled in rotation to the support member.

Abstract: An auxiliary driving device being attached to a primary driving device of a rolling door and including a gear engaged with a gear wheel of the primary driving device, a motor having an axle, a lower disc with a pinion slidably engaged on the axle, a spring biasing the pinion and the lower disc upward, an upper disc disposed above the lower disc, three balls engaged in the recesses formed in the discs, the pinion moves downward to engage with the gear when the first motor is energized so that the spindle can be driven to rotate by the motor.

Abstract: A differential unit comprises a differential carrier (12) supported in a housing (1) for rotation; output elements (16, 17) differentially rotatable relative to the carrier and connected to respective output shafts, differential gears connecting the output elements, and a friction assembly comprising a number of plates (22) rotationally fast with one element of the differential interleaved with a number of plates (24) rotationally fast with another element of the differential, the friction plates being axially loadable into frictional engagement with one another to restrict the differential rotation of the output elements. The friction plates are loadable by an actuating mechanism comprising an abutment ring (54) fixed in the housing and an actuating ring (28) movable angularly and axially relative thereto, with cam surfaces provided by circumferentially extending variable depth grooves (47, 48) in the rings with balls (49) therebetween engaging the grooves.

Abstract: A reversing clutch mechanism (10) for use in a transmission (12) of the type having a continuously rotating input shaft (52) and a rotatable output shaft (20). A pair of friction clutches (48, 50) are rotatably disposed on the output shaft (20) and are continuously driven in opposite reverse and forward rotational directions by gears (54, 58) and sprockets (60, 62) associated with the input shaft (52). A double friction cope (94) is helically splined on the output shaft (20) and moveable toward and away from the friction clutches (48, 50) for selective frictional engagement with either friction clutch (48 or 50) to cause the output shaft (20) to rotate in either a forward or reverse rotational direction. The double cone (94) includes a peripheral shifting groove (112) having oppositely inclined side walls (114) which cooperate with a shifting pin (120) disposed in the groove (112) to disengage the double cone (94) and the friction clutch ( 48 or 50).

Abstract: A clutch includes two coupling members respectively secured or coupled to two transmission shafts and each coupling member having a plurality of coupling teeth formed with arcuate or round tip portions for a smooth engaging of the two coupling members, and an electromagnetic controller electromagnetically driving a thrusting cam in relation to a stationary cam mounted on a base housing of the clutch, so that the clutch can be coupled or uncoupled smoothly, instantly and lightly.

Abstract: A gearbox comprising two shafts (20, 27) with their axes parallel to one another and at least two pairs of gear wheels each pair comprising a wheel (38) on one of the shafts permanently in mesh with a wheel (45) on the other shaft, the wheels (45) on one of the shafts being connectable to the shaft by friction clutches, and actuating means disposed between adjacent friction clutches to selectively engage one or other of them; the actuating means comprising two pressure rings (2) and an adjusting ring (1) disposed between them, adjusting rings (5) for causing relative angular movement between the adjusting ring and pressure rings, and opposed pairs of grooves (21, 22) in the facing surfaces of the adjusting ring and pressure rings.

Abstract: A first ball ramp actuator having a control ring acting with an activation ring to supply an axial clutch clamping force in a vehicle driving mode and a second ball ramp actuator using the control ring acting with a clutch pressure plate to supply an axial clutch clamping force in a vehicle coast mode where one side of a one-way clutch is attached to the control ring and another side is attached to a support bracket that is frictionally coupled to a transmission input shaft to maintain an energized rotational relationship with the activation ring when in the coast mode.