Abstract: A power unit for a motorcycle having a clutch operation assisting device. The clutch operation assisting device includes a push shaft, a bearing plate that supports the push shaft, and a first rotary plate rotatably supported on the bearing plate and connected to a clutch wire. The first rotary plate causes the push shaft to slide as it rotates and is gear-coupled to a second rotary plate. A spring unit that applies an assist force in a direction for disengaging a friction clutch is pin-coupled to the second rotary plate. The spring unit is supported on a mounting seat in a swingable manner and is installed such that, as viewed from the axial direction of the push shaft, the expansion/contraction direction of an auxiliary spring in the spring unit does not pass through a rotation center of the pressure plate.

Abstract: A device for lubricating an oil seal of an engine which is simple in construction and low in manufacturing cost without the need for providing piping for supplying lube oil to the oil seal and with which lube oil can be supplied sufficiently and properly to the oil seal to prevent overheating of the oil seal which induces oil leakage and occurrences of damage to the oil seal. The lubricating device has an oil seal which contacts a side face of a disk plate fixed to an end of a crankshaft of the engine and seals a gear room of the engine from outside, wherein an oil injection nozzle is attached to an end face of a crankcase of the engine such that the oil injection nozzle is in communication with a main oil gallery of the engine and oil in the main oil gallery is sprayed toward the slide contacting part of the oil seal.

Abstract: The present invention broadly comprises a clutch housing including a substantially cylindrical housing wall and an opening in the housing wall. The opening is operatively arranged to accept at least a portion of a lever spring for a clutch assembly and at least a portion of a protrusion for a torque-transmitting element in the assembly. The present invention also broadly comprises a clutch housing including a first and second protrusions extending from a substantially cylindrical housing wall, axially displaced from each other, and arranged to engage a torque-transmitting element in a clutch assembly. The first protrusion is arranged to receive torque from the element and to support the clutch housing in an axial direction. The second protrusion is arranged to preload a lever spring. The present invention further includes a clutch assembly with the preceding clutch housings.

Abstract: A hydraulic arrangement for the activation of two actuators, with a hydraulic pressure supply unit which is assigned jointly to the two actuators. The pressure supply unit is designed to be reversible in its direction of action, so that, depending on the direction of action, in each case only one of the actuators is driven.

Abstract: The present invention is to provide a clutch device that keeps a half-clutch range wide for a long time. A clutch device 1 is arranged in such a manner that an intermediate ring 24 is disposed on the pressure plate 23 so as to be slightly movable in a direction of pressing by a diaphragm spring 21; air passageways 31 are radially disposed at regular circumferential intervals between the intermediate ring 24 and the pressure plate 23 so as to let the inner and outer peripheries communicate with each other; plate springs 25 are disposed in the air passageways 31 to bias constantly the intermediate ring 24 and the pressure plate 23 in a direction of separating from each other; and a force of the pressing operation by the diaphragm spring 21 is transferred to the pressure plate 23 via the intermediate ring 24 and the plate springs 25.

Abstract: The invention proposes a friction coupling, in particular for use in motor vehicles, e.g. for controlling an air compressor, in which coupling at least two friction surfaces can be brought into frictional connection. According to the invention, two conical friction surface pairs are provided.

Abstract: A torque transfer device, in particular in the power train of a motor vehicle, for transferring torque between a drive unit and a shaft that is rotatable around an axis of rotation, in particular a transmission input shaft, having a hydrodynamic torque converter, which includes a converter cover that is connectable to or connected to the drive unit, which converter cover may be coupled via an impeller to a turbine wheel to transfer torque, which turbine wheel is bridgeable, to transfer torque, by a torque converter lockup clutch, which includes a piston that is movable to a limited extent in the axial direction and is constructed as a multi-plate clutch with a plate pack that includes outer plates which are connected to an outer plate carrier in a rotationally fixed connection, and inner plates which are connected to an inner plate carrier in a rotationally fixed connection.

Abstract: A vehicle driving apparatus includes a rotating electrical machine and an engagement device, which are disposed on a power transmission path linking an input member drive-coupled to an internal combustion engine and an output member drive-coupled to a wheel. The engagement device includes an engagement input coupled to the input member, an engagement output that forms a pair with the engagement input and is coupled to the rotating electrical machine, a friction member disposed between the engagement input and the engagement output, and a pressing member that presses the friction member in a pressing direction. An oil pressure chamber is formed between the pressing member and either the engagement input or the engagement output. A biasing spring biases the pressing member in the pressing direction when no oil pressure is supplied to the oil pressure chamber and is disposed on an exterior of the oil pressure chamber.

Abstract: A two stage clutch and shift actuation paddle assembly provides clutch disengagement through a first range of movement of a manually operated control lever or paddle and electronic shifting of a transmission upon movement through a second range. A return spring force generator causes a lower return force to be exerted on the generator paddle in a range of motion wherein the clutch is disengaged and a pronounced increased spring force to be exerted in advanced range of motion wherein the transmission shift actuation occurs.

Abstract: A clutch mechanism includes a field core into which an electromagnetic coil is incorporated and is fixed to a base member, a rotor rotatably fitted on a shaft and passing through a central portion of the field core to be connected to a speed reduction mechanism and an armature accommodated on an inside diameter side of the output drum. The armature is fitted on the shaft in order to rotate and move in an axial direction and is magnetically attracted to the rotor when the electromagnetic coil is energized. Drum side locking portions are provided inside of the output drum such that armature side locking portions provided on an outer circumferential portion of the armature can move in an axial direction of the shaft relative thereto and can be brought into engagement therewith in a rotational direction to transmit the rotation of the armature to the output drum.

Abstract: The present invention is aimed to provide a carrier assembly which can be made small in size while securing a sufficient fixing strength between a first carrier plate and a second carrier plate. The second carrier plate (8) has a plurality of connection elements (23) bent toward the first carrier plate (7) to weld and fix the outwardly projected end portions (23b) of the connection elements with the outwardly projected end portion of the first carrier plate (7) by electron beam welding. The connection elements each have a base portions (23a) formed with a notch (28). The notch (28) thus formed makes a gap S between the base portion of the connection element and the corner portion (29) of the pinion gear.

Abstract: A viscous fluid clutch for use as a clutch for a cooling fan for a vehicle, the clutch includes an input shaft, a rotor assembly, a first housing portion, a second housing portion, a coil assembly, and a brush box. The rotor assembly is coupled to the input shaft. The first housing portion is coupled to the second housing portion and the second housing portion is rotatably disposed on the input shaft. The first and second housing portions define a fluid reservoir for receiving the rotor assembly and a viscous fluid, preferably of the magnetorheological type. The coil assembly is coupled to the first housing portion. The brush box is operably coupled to the coil assembly. When the coil assembly is energized by the brush box, a magnetic field is created that acts upon the magnetorheological fluid to vary the torque transfer of the input shaft to the housing and the fan connected thereto.

Abstract: A check valve of a cylinder head controls an oil supply amount to the cylinder head according to oil pressure of a hydraulic pump. The check valve of the cylinder head according to the exemplary embodiment of the present invention may include: a lower cover of cylindrical shape including upper and lower surfaces, the upper surface being open and the lower surface having at least one first oil hole for receiving oil from the hydraulic pump; an upper cover coupled to the upper surface of the lower cover and having a sliding axle and at least one second oil hole; a first plate mounted in the lower cover, sliding vertically along the sliding axle, and having at least one third oil hole that is disposed eccentrically to the at least one second oil hole; and a second plate disposed between the first plate and the lower cover, sliding vertically along the sliding axle, and having at least one fourth oil hole disposed eccentrically to the first, second, and third oil holes.

Abstract: A fluid transmission device comprises: a cover member coupled to a drive shaft; a converter mechanism constituted by a pump impeller coupled to the cover member, a turbine runner connected to a driven shaft, and a stator disposed between the pump impeller and the turbine runner, a converter chamber through which a working fluid flows being formed in the interior thereof; a lockup mechanism having a clutch piston provided in a lockup chamber that is surrounded by the cover member and the turbine runner, which engages and disengages the drive shaft and driven shaft by supplying a control fluid to a clutch oil chamber surrounded by a back surface of the clutch piston and the cover member; an inlet passage for leading the working fluid into the lockup chamber from the outside; a communicating passage for leading the working fluid into the converter chamber from the lockup chamber; and an outlet passage for leading the working fluid to the outside from the converter chamber.

Abstract: A clutch mechanism includes a bolt threadably received by a drive shaft and configured to secure the blade on an inner washer disposed about the drive shaft. The clutch mechanism also includes a spring assembly that is generally annularly disposed around the bolt. When the spring assembly is compressed, the spring assembly is configured to grip the blade inner washer and the spring assembly. At least one shallow pocket and at least one deep pocket are disposed in a lower surface of an upper retainer, and at least one geometric spacer extends from the spring assembly. In the coupled condition, the geometric spacer is engaged with the shallow pocket, and in the uncoupled condition, the plug structure is engaged with the deep pocket.

Abstract: A dog clutch mechanism incorporated in an outboard motor includes a sliding clutch dog member splined to a propeller shaft and having recesses on each end face thereof, and a row of gear teeth formed on an end face of each of a pair of driven gears rotatably mounted on the propeller shaft. Each of the recesses has a bottom surface stepped to provide a corner edge at a stepped portion thereof. Each of the gear teeth has a beveled surface formed at a rear edge as viewed from a rotating direction of the driven gear. When the gear teeth are in mesh with the recesses of the clutch dog member, the corner edge of the stepped bottom surface of each recess is in contact with the beveled surface of the mating gear tooth.

Abstract: The invention relates to a system for lubricating a closing mechanism on a saddle coupling comprising a closing mechanism which is arranged on the lower side of a coupling plate and which comprises at least one closing hook and/or closing bar, provided with a coating, and a fat reservoir which is connected to the closure hook by means of a lubricating line. The invention also relates to a coating of individual components of the system, i.e. the closing hook and the closing bar, in addition to the use of a coating. The invention is characterized in that the coating of the closing hook and/or the closing bar is embodied as a sliding coating.

Abstract: A force transmitting assembly 20 transmits force to engage and disengage a driven shaft 28. When the force transmitting assembly 20 is engaged, front and rear annular pressure plates 32, 34 frictionally retain a rotor 36 fixedly mounted on the shaft 28 and stops rotation of the shaft 28. The force transmitting assembly 20 maximizes torque and minimizes inertia by providing friction surfaces with friction material substantially engaging the entire working surface of the rotor 36. The force transmitting assembly includes an axially moveable housing 22 attached directly to a mounting flange 24.

Abstract: A coupling assembly for use in transmitting force includes a housing which at least partially encloses a rotatable disc. The housing has a plate portion with an annular force transmitting surface which is engagable with the rotatable disc. A cooling fluid channel is at least partially defined by a side of the plate portion opposite from the force transmitting surface. A plurality of projections extend into a path of flow of cooling fluid through the cooling fluid channel. A cooling fluid inlet includes a passage having a portion with a large cross section connected in fluid communication with a radially outer portion of the cooling fluid channel. A portion of the inlet passage having a small cross section is connected in fluid communication with a radially inner portion of the cooling fluid channel. Ribs extend across the radially inner and outer portions of the cooling fluid channel.

Abstract: A unidirectional clutch assembly for coupling an input shaft to a driven shaft, uses an internal shaft positioned within a moveable clutch disc and a stationary clutch disc. The moveable disc has an engaging element for releasably engaging the internal shaft when the moveable clutch disc is rotated in a primary rotation direction by the driven shaft. The stationary clutch disc has a second engaging element for releasably engaging the internal shaft when the internal shaft is rotated relative to the stationary clutch disc in the opposite direction. When the driven shaft rotates in the primary rotational direction, the moveable clutch disc engages, and the stationary clutch disc disengages, the internal shaft, allowing it to rotate freely in the primary rotational direction. When the driven shaft rotates in the opposite direction, the moveable clutch disc disengages, and the stationary clutch disc engages, the internal shaft preventing its rotation.