Abstract: An improved lubrication system for a ball ramp master clutch and a gear change transmission is disclosed where a lubricant pump is driven by the input shaft to a ball ramp mechanism which, when energized, applies a clamping force on a clutch pack where lubricant is supplied to the pump from a wet sump on the transmission and then lubricant is forced into the clutch assembly and also forced into the gear shaft transmission for eventual return into the sump for recirculation. In an alternate embodiment, a dry sump system is used where the oil flowing out of the transmission is pumped to dry sump where it is then recirculated to the pump.

Abstract: A viscous coupling comprising two parts which form an annular chamber 16 which is filled with a highly viscous fluid and in which first coupling plates 17 are connected to the first one of the parts 11 for rotation therewith and second coupling plates 18 are connectable to the second one of the parts 12 which are arranged so as to alternate in the longitudinal direction. The second coupling plates 18 are arranged so as to alternate with clamping rings 20 in the second one of the parts 12, which clamping rings 20, in turn, are connected to the second one of the parts 12 for rotation therewith. A first axial adjusting device 23 acts in an axial direction on the second coupling plates 18 and on the clamping rings 20 and locks the same relative to one another and to the second one of the parts 12.

Abstract: An overload protection arrangement for a portable power tool includes a magnetic clutch (5) arranged in a drive train of the power tool between an electromotor (1) and a tool chuck (3), control electronics (6) for controlling the magnetic clutch (5), a self-actuated torque-dependent overload clutch (7) likewise arranged in the drive train, and a sensor (8) for detecting an open condition of the overload clutch (7) upon the overload of the drive train and connected with the control electronics (6).

Abstract: An apparatus for controlling the clutches in an automatic vehicle transmission includes a series of electric motors attached to the transmission housing, each of which has a motor shaft with a gear attached to it. A torque-to-thrust mechanism is driven by the driving gear and includes a thrust element that imparts a linear force to the apply plate of a clutch. Also included is a sensing system that allows for sensitive control of the torque-to-thrust mechanism which facilitates smooth engagement and disengagement of the clutch.

Abstract: An electromagnetic clutch structure in a driving force distribution system selectively operates right and left electromagnetic clutches so as to transmit torque from the inner turning wheel to the outer turning wheel, thereby assisting turning, or so as to transmit torque from the outer turning wheel to the inner turning wheel, thereby stabilizing vehicle behavior. The right and left electromagnetic clutches each include a coil, a core housing the coils, armatures arranged so as to adjoin the core in the lateral direction, and frictional engagement members arranged on the inside, in the radial direction, of the core. The frictional engagement members are engaged by pressure of a pressure part of the armatures, the pressure part extending further inward in the radial direction than the core.

Abstract: A magnet type fan clutch apparatus is formed of an electromagnetic clutch mounted on one driving shaft, and a magnet coupling operatively connected to the electromagnetic clutch. The magnetic coupling includes a permanent magnet rotary body to which a fan is fixed, and a disc having a conductor or a hysteresis member opposed to the permanent magnet rotary body with a narrow clearance left therebetween; and formed so that the permanent magnet rotary body and disc are rotated together or relatively owing to an attraction working between the permanent magnet and conductor. The magnetic coupling is formed so as to be ON/OFF controlled by the electromagnetic clutch, and a seal structure is provided between the disc and permanent magnet rotary body.

Abstract: A magnet type fan clutch apparatus is formed of an electromagnetic clutch mounted on one driving shaft, and a magnet coupling operatively connected to the electromagnetic clutch. The magnetic coupling includes a permanent magnet rotary body to which a fan is fixed, and a disc having a conductor or a hysteresis member opposed to the permanent magnet rotary body with a narrow clearance left therebetween; and formed so that the permanent magnet rotary body and disc are rotated together or relatively owing to an attraction working between the permanent magnet and conductor. The magnetic coupling is formed so as to be ON/OFF controlled by the electromagnetic clutch, and a seal structure is provided between the disc and permanent magnet rotary body.

Abstract: In a power switching apparatus which moves cages respectively corresponding to left and right two driven members in an axial direction, end surfaces of the respective cages are brought into frictional contact with the driven members so as to rotate together therewith, and a wedge connection occurs in a circumferential connection surface of a drive member to each of circumferential connection surfaces in both of the driven members according to an interposition of rolling elements, at a time of switching a power transmitting state from the drive member to both of the driven members. A spacer which is coaxially arranged with the driven members is provided between both of the driven members, and both of the cages are coaxially supported by an outer periphery of the spacer.

Abstract: A fan rotor (7) for an electromagnetic fan clutch is mounted on a drive shaft (1) with the help of a three-ring bearing (8) so that three different speeds of rotation of the fan rotor (7) can be obtained. To reduce wear, especially in the presence of impact loads and oscillatory movements of the three-ring bearing (8), this three-ring bearing (8) is configured so that different materials are paired with each other in regions of rolling contact.

Abstract: A viscous coupling comprising two parts which form an annular chamber 16 which is filled with a highly viscous fluid and in which first coupling plates 17 are connected to the first one of the parts 11 for rotation therewith and second coupling plates 18 are connectable to the second one of the parts 12 which are arranged so as to alternate in the longitudinal direction. The second coupling plates 18 are arranged so as to alternate with clamping rings 20 in the second one of the parts 12, which clamping rings 20, in turn, are connected to the second one of the parts 12 for rotation therewith. A first axial adjusting device 23 acts in an axial direction on the second coupling plates 18 and on the clamping rings 20 and locks the same relative to one another and to the second one of the parts 12.

Abstract: In a power transmission apparatus, a sub-clutch apparatus is arranged between the input shaft and an intermediate rotary body, a main clutch apparatus is arranged between the intermediate rotary body and the output shaft, and a cam apparatus converting the frictional engagement force of the sub-clutch apparatus into the pressing force for the main clutch apparatus.

Abstract: A drive force transmission apparatus disposed within a differential carrier and adapted to drivingly couple first and second rotary shafts. The drive force transmission apparatus includes an outer casing coupled to the first rotary shaft, an inner shaft coupled to the second rotary shaft, a frictional clutch which enters a frictionally engaged state upon reception of a thrust force to thereby couple the outer casing and the inner shaft together, and an electromagnetic drive mechanism for generating the thrust force.

Abstract: A variable end-of-travel stop mechanism, for controlling the rotation of a steering shaft in a steer-by-wire steering system having a controller, includes a first clutch assembly having a first roller clutch engaged to the steering shaft, a first rotary brake engaged to the first roller clutch, and a first electrical connector connected to the first brake and in signal communication with the controller. The first clutch assembly is operative to prevent the rotation of the steering column in a first direction when activated. The stop mechanism further includes a second clutch assembly having a second roller clutch engaged to the steering shaft, a second rotary brake engaged to the second roller clutch and a second electrical connector connected to the second brake and in signal communication with the controller. The second clutch assembly is operative to prevent the rotation of the steering column in a second direction counter to the first direction when activated.

Abstract: A small displacement, preferably bidirectional motor (20) is provided which includes a chassis (22), main actuator assembly (24), and forward and rearward clutch assemblies (26,28), as well as an output (106-110) coupled to an external load (222) to be translated. The main actuator assembly (24) includes a plurality of primary magnetostrictive actuators (50-54). The clutch assemblies (26,28) each have a secondary magnetostrictive actuator (88,148), a ramp (90, 150) interengageable with a roller cage (136, 196), and are designed as passively-engaged, actively-disengaged, one-way clutches which are unloaded before disengagement thereof in order to prevent undue clutch wear. Forward translation of the output (106-110) is obtained by inchworm-type incremental motion, whereas rearward translation occurs by an initial forward motion followed by a greater rearward motion to achieve a net rearward displacement.

Abstract: A parallel hybrid vehicle can achieve regeneration efficiency in a regenerating operation by employing an electromagnetic two-way clutch which is superior in engaging and disengaging, can shorten a length in axial direction and can provide great freedom in layout. The parallel hybrid vehicle includes an engine, a motor generator having both functions of a generator and a motor, a transmission, a torque combining mechanism combining an output torque of the engine and an output torque of the motor generator by a planetary gear mechanism for outputting torque, control means for controlling output torque of the motor generator and rotating condition, and an electromagnetic two-way clutch mechanism selectively controlling engaging and disengaging between respective elements of the planetary gear mechanism.

Abstract: A coupling assembly 10 which selectively causes a primary mass or flywheel 20 be engaged or be coupled to a crankshaft 18 as a transmission gear assembly 23 moves from a first gear position to a second gear position and which further selectively causes the primary mass or flywheel 20 to be disengaged or disconnected from the crankshaft 18 as the vehicle is accelerated from an idle state, effective to decrease or substantially eliminate acceleration lag.

Abstract: A driving force distribution device which controls the engagement forces of electromagnetic clutches and which govern the torque distribution between the driving wheels of a vehicle by calculating a target magnetic flux density and converting the same into a target excitation current. Since the relationship between the target magnetic flux density and the target excitation current changes according to a decrease in the air gaps accompanying wear of the frictional engagement members of the electromagnetic clutches, a relationship between the magnetic flux density and the excitation current is determined by applying current to the electromagnetic clutches when torque distribution control is not being carried out such as when the system is started, and the target excitation current is calculated from the target magnetic flux density based on the determined relationship.

Abstract: An axle module for use in an automotive vehicle. The axle module includes a housing and a shaft rotatably supported within that housing. The axle module also includes a ring gear connected to the shaft. The axle module also includes a clutch pack housing engaged with an end of shaft while a side shaft joint is arranged within the clutch pack housing. The side shaft joint is connected to a side shaft which is further connected to a wheel of the automotive vehicle. A plurality of plates extend from the clutch pack housing and from the side shaft joint such that they overlap in an alternating manner with one another. The axle module also includes a motor which is used to control the transfer of an axial torque through the clutch pack housing and plurality of plates.

Abstract: A device for transmitting movement to a fan for cooling the coolant in a motor vehicle has a shaft on which the fan is mounted by means of an idle support, and a first electromagnetic clutch, engagement of which causes rotation of the fan at a speed equal to that of the shaft. A second clutch causes rotation of the fan at a speed lower than that of the shaft or at zero speed. The second clutch has an actuator coaxially displaceable, in both directions, with respect to the shaft, but idle upon rotation of the latter. A coupling which is coaxially locked in rotation with the shaft is connected to the actuator and is suitable for engagement with the rotor of the second clutch.

Abstract: An axle module for use in an automotive vehicle. The axle module includes a housing and a shaft rotatably supported within that housing. The axle module also includes a ring gear connected to the shaft. The axle module also includes a clutch pack housing engaged with an end of shaft while a side shaft joint is arranged within the clutch pack housing. The side shaft joint is connected to a side shaft which is further connected to a wheel of the automotive vehicle. A plurality of plates extend from the clutch pack housing and from the side shaft joint such that they overlap in an alternating manner with one another. The axle module also includes a motor which is used to control the transfer of an axial torque through the clutch pack housing and plurality of plates.

Abstract: In a power transmission apparatus, comprising: a sub-clutch apparatus, a main clutch apparatus and a cam apparatus, wherein the electromagnet is arranged in an inner diameter side of the main clutch apparatus.

Abstract: A driving force distribution system selectively operates right and left electromagnetic clutches and, thereby assisting a vehicle in turning by transmitting torque from the inner turning wheel to the outer turning wheel. The right electromagnetic clutch includes an armature on the right side of a core housing a coil. The left electromagnetic clutch includes an armature on the left side of the core housing a coil. When the right electromagnetic clutch is engaged in order to assist the turning by transmitting torque from the right driven wheel to the left driven wheel when the vehicle is turning right, since the right electromagnetic clutch includes the armature on the right side of the core, the armature is urged leftward toward the core due to a centrifugal force caused by turning right to reduce an air gap, thereby enhancing the responsiveness of engagement of the right electromagnetic clutch as well as reducing the power consumption.

Abstract: There is provided with a first clutch. A second clutch is for controlling fastening and releasing operation of the first clutch. The first clutch and the second clutch are radially differently and axially correspondently positioned each other.

Abstract: An electromagnetic clutch structure in a driving force distribution system selectively operates right and left electromagnetic clutches so as to transmit torque from the inner turning wheel to the outer turning wheel, thereby assisting turning, or so as to transmit torque from the outer turning wheel to the inner turning wheel, thereby stabilizing vehicle behavior. The right and left electromagnetic clutches each include a coil, a core housing the coils, armatures arranged so as to adjoin the core in the lateral direction, and frictional engagement members arranged on the inside, in the radial direction, of the core. The frictional engagement members are engaged by pressure of a pressure part of the armatures, the pressure part extending further inward in the radial direction than the core.

Abstract: A fan rotor (7) for an electromagnetic fan clutch is mounted on a drive shaft (1) with the help of a three-ring bearing (8) so that three different speeds of rotation of the fan rotor (7) can be obtained To reduce wear, especially in the presence of impact loads and oscillatory movements of the three-ring bearing (8), this three-ring bearing (8) is configured so that different materials are paired with each other in regions of rolling contact.

Abstract: An electromagnetic clutch having a solenoid coil (80), a coil housing (81) disposed surrounding the solenoid coil (80), an armature plate (82) disposed facing the side of the coil housing, and a wet-type multi-plate clutch mechanism, the armature plate being linked to the clutch housing (52). The current flowing to the solenoid coil (80) is controlled so as to control the clamping of the armature plate (82) to the coil housing (81), and the clamping force acting on the armature plate is used made to act on the clutch mechanism via a ball cam mechanism (65).

Abstract: A magnet type fan clutch apparatus is formed of an electromagnetic clutch mounted on one driving shaft, and a magnet coupling operatively connected to the electromagnetic clutch. The magnetic coupling includes a permanent magnet rotary body to which a fan is fixed, and a disc having a conductor or a hysteresis member opposed to the permanent magnet rotary body with a narrow clearance left therebetween; and formed so that the permanent magnet rotary body and disc are rotated together or relatively owing to an attraction working between the permanent magnet and conductor. The magnetic coupling is formed so as to be ON/OFF controlled by the electromagnetic clutch, and a seal structure is provided between the disc and permanent magnet rotary body.

Abstract: The electrically operated dispensing appliance comprises a gear motor which is connected to the main shaft by a first gear and a first shifting sleeve in order to operate the advance and the relieving stroke under high loads, and for the operation at smaller loads, i.e. fast retraction and fast forward feed, it is connected to the main shaft by a second gear, a driving shaft, and a second shifting sleeve. An electromagnet is connected to said two shifting sleeves in such a manner that one or the other shifting sleeve is selectively connectable to the main shaft. A drive assembly of this kind is more economical and more silent than a solution with two gear motors.

Abstract: A clutch assembly for disposition in a motor vehicle drive line includes an internal reaction force circuit. The clutch assembly includes a multiple disc friction clutch disposed adjacent an operator assembly which selectively applies force to the friction clutch to selectively transfer torque therethrough. The clutch components are disposed between a flange and a stop on an elongate member which functions as a reaction force member to self-contain the reaction force from the clutch operator. The clutch finds particular application in motor vehicle drive line components such as a rear (secondary) axle wherein it is disposed in pairs to independently control torque supplied to each axle and in applications where it is advantageous to contain or ground the reaction force generated by and associated with the clutch operator compactly within the clutch structure rather than its housing.

Abstract: A driving force distribution device which controls the engagement forces of electromagnetic clutches and which govern the torque distribution between the driving wheels of a vehicle by calculating a target magnetic flux density and converting the same into a target excitation current. Since the relationship between the target magnetic flux density and the target excitation current changes according to a decrease in the air gaps accompanying wear of the frictional engagement members of the electromagnetic clutches, a relationship between the magnetic flux density and the excitation current is determined by applying current to the electromagnetic clutches when torque distribution control is not being carried out such as when the system is started, and the target excitation current is calculated from the target magnetic flux density based on the determined relationship.

Abstract: Device for transmitting the movement to a fan (1) for cooling the coolant in a motor vehicle, comprising movement generating means (3,21) on which the fan (1) is mounted by means of an idle support (1a), a first electromagnetic clutch (30), engagement/disengagement of which causes rotation of the fan at a number of revolutions equal to that of the movement generating means or at zero revolutions; a second clutch (60;160;260;360), engagement/disengagement of which causes rotation of the fan at a number of revolutions lower than that of the movement generating means or at zero revolutions; means (62) of the electromagnetic type for engaging/disengaging the second clutch, in which said first clutch (30) is supported in a position substantially adjacent to the fixed base (10) of the engine casing and said clutch (60) is supported by a fixed shaft (13) in a position substantially projecting from the base (10) of the engine.

Abstract: Device for transmitting the movement to a fan (1) for cooling the coolant in a motor vehicle, comprising movement generating means (3,21) on which the fan (1) is mounted by means of an idle support (1a), a first electromagnetic clutch (30), engagement of which causes rotation of the fan at a number of revolutions equal to that of the movement generating means; a second clutch (60;160;260;360), engagement/disengagement of which causes rotation of the fan at a number of revolutions lower than that of the movement generating means or at zero revolutions; which comprises means (50;150;250;350) for engaging/disengaging the second clutch comprising an actuating element (41) coaxially displaceable, in both directions, with respect to the movement generating means (3;21), but idle upon rotation of the latter; coupling means (47;147;247c;347) which are coaxially locked in rotation with the movement generating means (3;21) and connected to said displacement actuating element (41) and are suitable for engagement with th

Abstract: A power cut/connect device is proposed which is axially compact and is usable in a limited space. The device includes a first input member coupled to a power shaft, an output member mounted coaxially with the first input member, a first two-way clutch provided between the first input member and the output member, a second input member coaxially mounted with the output member, a second two-way clutch provided between the output member and the second input member so as to be disposed coaxially with and around the first two-way clutch, and a control unit for controlling the first and second two-way clutches for interruption and connection of power.

Abstract: A bi-directional overrunning clutch is disclosed for controlling torque transmission between a secondary drive shaft and secondary driven shafts. The overrunning clutch includes a pinion input shaft in a differential housing that engages with a clutch housing rotatably disposed within the differential housing. At least one race is located adjacent to the clutch housing and is engaged with an output shaft. A cage is located between the race and the clutch housing. The cage is movable with respect to the clutch housing. A first coil is mounted within the differential housing adjacent to the cage and is adapted to produce an electromagnetic field when energized which causes the cage to drag with respect to the clutch housing. The dragging of the cage with respect to the clutch housing positions rolls within the cage to engage the clutch housing with the race when wheels on a primary drive shaft lose traction.