Abstract: A clutch mechanism for use in a rotary power tool having a motor comprises an input member to which torque from the motor is transferred and an output member movable between a first position in which the output member is engaged with the input member for co-rotation therewith, and a second position in which the output member is disengaged from the input member. The clutch mechanism further comprises a biasing member biasing the output member into the first position and an electromagnet which, when energized, moves the output member from the first position to the second position.

Abstract: An electronically locking differential assembly constructed in accordance to the present disclosure includes a differential casing, a first and second side gear, a lock actuation assembly and a lock detect mechanism. The lock actuation mechanism selectively moves between a locked state where the side gears are fixed for concurrent rotation and an unlocked state where the side gears rotate relative to each other. The lock detect mechanism detects whether the lock actuation mechanism is in the locked, unlocked state, and an intermediate position between the locked and unlocked state; then provides feedback to the driver on the state of the lock actuation mechanism.

Abstract: A clutch and a compressor including the same, and may include a hub fastened to a rotary shaft of a compressor and rotatable with the rotary shaft in a state where its position has been fixed, a disk fastened to the hub and rotatable with the hub, a pulley rotated by receiving power from a driving source of the compressor, an elastic member fastening the hub and the disk, fastening the hub and the disk so that the disk approaches or is away from the pulley based on the hub, a field coil assembly magnetized when power is applied to contact or space the disk and the pulley, an attenuation member interposed between the elastic member and the disk, thereby reducing the noise and vibration due to the contact and spacing between the disk and the pulley by the elastic member and the attenuation member.

Abstract: The objective of the present invention is to provide a conduction-cooling-type super-conducting magnet, wherein a surface pressure is applied between a super-conducting coiled wire portion and a cooling member, the non-uniformity of the surface pressure in the diameter direction of the coiled wire portion has been improved, whereby the uniformity of contact heat resistance has been improved, moreover, warping due to a thermal contraction difference between the cooling member and the coiled wire portion arising at cooling time has been decreased sufficiently, and a surface pressure application mechanism can be installed solely in the low-temperature portion where the super-conducting coiled wire portion is installed.

Abstract: An apparatus for sensing the position of an actuator assembly having electromagnetic coil, a pressure plate with a rim on one end thereof, and a sensor assembly attached to the actuator assembly. The sensor assembly includes a follower having a magnet disposed therein and a recess for receiving the rim of the pressure plate, a sensor housing having a slot for receiving the follower, and a sensor fixed within the sensor housing between the sensor housing and the follower.

Abstract: An aluminum coil assembly includes: a steel housing; an aluminum electromagnetic coil electrically connected to the steel housing and having an aluminum lead coil and a copper ground coil connected to the aluminum lead coil by means of soldering or a terminal; and a brass ground ring adapted to be press-fitted to a ring hole formed on the steel housing and having a ground hole formed on the center thereof in such a manner as to insert the copper ground coil connected to the aluminum lead coil thereinto, a cylindrical portion having a cut line adapted to be reduced when coupled to the ring hole of the steel housing to support the copper ground coil inserted into the ground hole, and an inclined portion formed on the underside of the cylindrical portion to allow easy press-fitting to the ring hole formed on the steel housing.

Abstract: A steering system includes a two-way clutch, a worm wheel that is rotatable together with an input shaft, and a coil that generates a drive force for the two-way clutch to couple/decouple the input shaft and an output shaft to/from each other. The worm wheel has a center circular plate portion fixed to the input shaft, a radial ring portion that projects forward from a peripheral edge of the center circular plate portion, and a toothed portion that projects outward in the radial direction from the radial ring portion. The two-way clutch is disposed in a space surrounded by the center circular plate portion and the radial ring portion and formed on the front side with respect to the center circular plate portion. The coil surrounds an outer peripheral surface of the radial ring portion.

Abstract: An electromagnetic clutch assembly includes a rotor assembly operable to rotate about an axis. The electromagnetic clutch assembly also includes an armature assembly operable to rotate about the axis. The electromagnetic clutch assembly also includes an electromagnetic coupling system operable to generate a magnetic field. The magnetic field induces the rotor assembly and the armature assembly against one another along the axis for frictional engagement such that the rotor assembly and the armature assembly rotate together. The electromagnetic clutch assembly also includes an air gap defined between the rotor assembly and the armature assembly when the rotor assembly and the armature assembly are in frictional engagement. In another implementation, at least one plate is positioned between the rotor assembly and the armature assembly such that magnetic flux passes through the at least one plate. The plate is formed from a mixture of powdered metal and solid lubricant.

Abstract: A dog clutch includes: a first rotational member; a second rotational member; a clutch member; an electromagnetic coil; and a position detecting portion. A control method for the dog clutch, includes: supplying an exciting current to the electromagnetic coil when the clutch member is moved from the non-connecting position toward the connecting position; and promptly reducing the exciting current when the position detecting portion detects that the clutch member has moved to the connecting position.

Abstract: In at least some implementations, a disconnect assembly for a driveline component, such as a power transfer unit, may include an input shaft, a disconnect shaft selectively rotated by the input shaft and an output shaft coupled to the disconnect shaft. A first gear is coupled to the disconnect shaft and a second gear is coupled to the output shaft and to the first gear so that the output shaft rotates when the disconnect shaft rotates. A connection feature is movable between an engaged position in which the input shaft and disconnect shaft are coupled and a disengaged position in which the input shaft rotates relative to the disconnect shaft. The connection feature includes a first part carried by the gear for rotation therewith and a second part movable relative to the first part and carried by the input shaft for rotation with the input shaft.

Abstract: A friction clutch assembly for a vehicle accessory, particularly to drive a vehicle cooling pump, and more particularly as part of a dual mode drive for a cooling pump, together with an electric motor. The friction clutch assembly includes a friction plate member connected to a central rotatable shaft member used for operating the vehicle accessory. A biased armature member is adapted to force a friction plate member with friction linings thereon against a housing or cover which is rotating at input speed. A solenoid assembly is used to overcome the spring bias and pull the armature and friction plate member away from the housing.

Abstract: An electromagnetic clutch includes an armature 42 having a rotor contact surface 46a segmented in the radial direction by an annular groove 44 to form a plurality of rings, the groove being formed concentrically with the armature 42 for obstructing magnetic flux; and a rotor 43 having a contact surface, wherein the armature 42 is attracted toward the contact surface of the rotor 43 by magnetic force caused by an electromagnetic coil to couple the armature with the rotor for transmitting power. The armature 42 is formed by the steps of: preparing an armature material 42 with a groove 44 formed thereon, the groove having a width of w1; and narrowing the groove width from w1 to w2 by applying pressure on a pressed portion 47 in a peripheral edge region of the groove 44 to cause plastic flow in a horizontal direction along the material 42.

Abstract: An electromagnetic clutch includes a first rotation transmission portion, annular field core, rotation stop member, second rotation transmission portion, armature, and spring member. The annular field core is supported by the first rotation transmission portion via a first bearing. The first bearing is housed in a hollow portion of the field core and fitted on an inner circumferential surface of the field core. The rotation stop member includes a flat portion which is fixed to an end of the field core on a side opposite to the armature. The flat portion is formed integrally with a retaining piece which projects toward the hollow portion of the field core and faces the first bearing when viewed from the axial direction of the field core.

Abstract: Disclosed is a field coil assembly of an electromagnetic clutch including a bobbin from which lead wires, which are both ends of a coil made of an aluminum-based material, protrude outward, a core that surrounds the bobbin such that the lead wires are exposed, a bobbin terminal installed at the bobbin while being adjacent to the lead wire of the coil, and a connector coupled to the core and including a lead wire terminal. The lead wires of the coil are connected to the bobbin terminal through heating and pressing.

Abstract: A clutch assembly configured for use with a supercharger includes a first shaft supported for rotation within a clutch housing. A pulley is mounted on the first shaft. A clutch rotor is also mounted on the first shaft at a location that is axially spaced from the pulley. A clutch coil is supported within the clutch housing and positioned adjacent to a first face of the clutch rotor. A second shaft is supported for rotation relative to the first shaft and is coaxially aligned with the first shaft. A clutch armature is mounted on the second shaft and positioned adjacent to a second face of the clutch rotor. A supercharger system including the clutch assembly is also provided.

Abstract: The present invention relates to a field coil assembly of an electromagnetic clutch for a compressor, more particularly, a field coil assembly of an electromagnetic clutch for a compressor, in which a terminal electrically connected with a field coil portion, and an electric wire are assembled to each other by means of upper and lower holders, and then finally engaged with together by means of an insert molding, thereby simplifying a manufacturing process to reduce manufacturing expense, removing a need for a separate member for protecting an electric wire, and easily adjusting the length of the electric wire.

Abstract: An axle assembly comprises a power transmission device including a housing having a cylindrically shaped sidewall. The power transmission device selectively communicates rotatable motion from an input member to an output member. A frictional clutch is disposed in the housing and includes a drum. A first and a second axle shaft selectively drive a first and a second drive wheel, respectively. A differential selectively transfers drive torque from the output member to at least one of the first and second axle shafts. An electric motor comprising a coil and a plurality of magnets is provided on the axle assembly. In one example, the coil is disposed on the housing and the magnets are disposed on the drum. The coil is configured to selectively energize to provide one of a positive or negative torque input to the output member.

Abstract: A electromagnetic clutch assembly for use in a vehicle is presented. More specifically, the clutch assembly comprises an input member; an output member; a friction clutch pack having a first plurality of clutch plates coupled for rotation with said input member and a second plurality of clutch plates interleaved with said first plurality of clutch plates and coupled for rotation with said output member; a solenoid coil; an actuator hub having an armature plate; and a cam lever assembly having a first end engaging said actuator hub and a second end engaging said friction clutch pack. When electrical current is applied to the solenoid coil, the armature plate moves the actuator hub, the actuator hub engages the cam lever and causes said cam lever to compress the interleaved first and second plurality of clutch plates, thereby, resulting in the coupling of the input and output members.

Abstract: A clutch assembly configured for use with a supercharger having a first shaft having a longitudinal axis; a pulley connected to the first shaft; a clutch rotor mounted connected to the first shaft; a clutch armature mounted to a second shaft and unconnected to the first shaft; and a clutch coil spaced along the longitudinal axis from the pulley. The clutch rotor rotates around the longitudinal axis. The clutch armature also rotates around the longitudinal axis. The design diameter of the pulley is entirely independent of the diameters of the clutch rotor, the clutch armature, and the clutch coil. A supercharger including the clutch assembly is also provided.

Abstract: The invention relates to a friction brake which can be used for a shaft and a bearing part that can be rotated in relation to each other about a rotational axis (3). The friction brake comprises two brake elements: the first brake element has a first friction surface (24) and has to be mechanically connected to the bearing part, and the second brake element has a second friction surface (25) and has to be mechanically connected to the shaft. The connectible and disconnectable dynamic effect of an actuation mechanism forces the two brake elements against each other during a braking action or stop in such a manner that the two friction surfaces (24, 25) rest one on the other and contact each other in the area of a contact surface (29, 30). The contact surface (29, 30) covers only a part of every friction surface (24, 25) at any point in time during a braking action or stop.

Abstract: A driving force transmitting device is comprised of a first rotary member, a second rotary member securely fit around the first rotary member, a third rotary member rotatably supported in the first and second rotary members for being engaged with a shaft, an anti-rotated solenoid slidably fit in a solenoid housing hollow defined by the second rotary member, and a friction clutch driven by the solenoid for transmitting torque between the first rotary member and the third rotary member.

Abstract: A multi-position clutch allows selectively coupling at least two of at least three rotatable shafts is described herein. The clutch comprises at least three cooperation elements respectively associated to one of the at least three rotatable shafts for selective engagement therebetween; the at least three cooperation elements are mounted to the at least three rotatable shafts so as to be sequentially positioned for selective coupling of at least two adjacent cooperation elements. An actuating mechanism is provided for selectively coupling at least two adjacent cooperation elements from the at least three cooperation elements.

Abstract: A clutch device is combinable with a rotating device rotating about an axis. The clutch device is provided with a clutch rotatable with the rotating device, a plunger for disengageably engage the clutch, a solenoid for generating a magnetic flux for driving the plunger, a magnetic core slidably fitting on a portion of the rotating device and incompletely enclosing the solenoid to expose the solenoid to the portion, and a support member configured to support the magnetic core to fit with the rotating device in an axial direction along the axis. The magnetic core in combination with the portion of the rotating device and the plunger is so dimensioned as to enclose the solenoid.

Abstract: An electromagnetic clutch is provided with: a clutch hub which is connected to a shaft member (one of a pair of rotation members); a clutch housing which is connected to a hollow shaft (the other of a pair of rotation members); a rotor which is connected to the clutch housing; a main clutch (clutch member) which is disposed between the clutch hub and the clutch housing; and an electromagnet which operates the main clutch. An end surface of the clutch housing and an end surface of a core of the electromagnet are disposed to be opposed to each other with the rotor interposed therebetween in an axial direction. The end of the rotor in a side of the clutch housing is formed with an extension portion which extends to the clutch housing in the axial direction. An outer periphery of the clutch housing is connected to the extension portion through a connection portion. The connection portion is disposed outside the main clutch in a radial direction.

Abstract: An electromagnetic friction disk clutch for use in vehicles is described, which permits a significant saving in energy over known clutches. For this purpose, the clutch according to the invention is embodied in such a way that an electromagnet is loaded with a raised strength of current only to change over between the clutch states of the engaged state and the disengaged state. While the clutch remains in these states up to the next shifting process, the supply of current to the solenoid can be greatly reduced or even switched off.

Abstract: Provided is an electromagnetic clutch, in which a plurality of magnetic flux shielding slits extending in the axial direction and arcuately in the circumferential direction are formed individually in a rotor and an armature, and in which the magnetic flux by the excitation of a coil inserted on the anti-armature side of the rotor is passed from the non-slit portion of the rotor to the non-slit portion of the armature and from the non-slit portion of the armature to the non-slit portion of the rotor, so that a magnetic attraction is generated to bring two frictional faces into press contact with each other and so that the two frictional faces are separated by the demagnetization of the coil. The slits of at least one of the rotor and the armature are formed to change in such a taper shape that the slit width at the frictional face side may be smaller than that at the anti-frictional face side.

Abstract: The present invention relates to a field coil assembly of an electromagnetic clutch for a compressor. A field coil assembly according to the present invention includes a field coil member 20 having a coil wire 22 extending outward; a power connecting member 30 having a sleeve 35 with a terminal 40 protruding out, the terminal electrically connecting the coil wire 22 to an external power source; a flange 28 coupled to one side of the field coil member 20 with the coil wire 22 drawn therefrom, the flange 28 having a catching portion 29 coupled with the sleeve 35, the flange 28 having electric conductivity; and a ground terminal 50 provided in the sleeve 35 and electrically connected to the terminal 40, the ground terminal 50 having at least a portion contacted with the catching portion 29.

Abstract: A pump system that pressurizes a fluid includes a shaft, a first rotor and a second rotor that is selectively driven by the shaft. Relative rotation between the first rotor and the second rotor generates variable sized pockets therebetween to pressurize the fluid. A clutch regulates a degree of coupling of the rotor to the shaft between a decoupled state and a coupled state to regulate the relative rotation between the first and second rotors.

Abstract: An electromagnetic clutch 1 is disclosed having first and second relative rotary members 3, 5, an electromagnet 11 having a coil 7 and a yoke 9, a rotor 13 placed in close proximity to the electromagnet 11 and permeating magnetic field lines through the yoke 9, a friction clutch 15 operative to transfer drive torque between the first and second relative rotary members 3, 5, and an armature 17 permeating magnetic field lines coming from the rotor 13 for controlling coupling the friction clutch. The rotor 13 includes first and second magnetic members 21, 23 for forming at least one magnetic flux loop 19 and the first and second magnetic members 21, 23 are made of materials different from each other.

Abstract: A magnetic friction clutch has two clutch parts, supported so that they can rotate relative to each other around an axis of rotation. A first clutch part has at least two clamping jaws which are movable somewhat toward and away from each other. A second clutch part, situated between the clamping jaws, is of disk-shaped design. The clamping jaws are pressable against the second clutch part by the magnetic force of a variable magnetic flux which is carried in the clutch parts in a soft magnetic material, in order to form a frictionally engaged connection between the clutch parts. The second clutch part has a plurality of soft magnetic ring zones permeated by the magnetic flux, which extend in the circumferential direction and are separated from each other in the radial direction by slots running in the circumferential direction. Ring zones adjacent to each other in the radial direction are connected with each other by bridging links.

Abstract: A transmission brake (1) is described, where one transmission shaft (3) can be braked to carry out an upshift operation. The aim of the invention is to provide a transmission brake that is devoid of any hydraulic or pneumatic actuation device and that requires very little axial installation space. Such a transmission brake (1) has one electromagnetic actuation device (6, 7, 8) with which the friction elements (4, 5) of the transmission brake (1) can be pressed against each other for actuating the brake.

Abstract: The present invention relates to a field coil assembly for an electromagnetic clutch, which comprises an electromagnetic coil body 30 formed by winding an electromagnetic coil; a bobbin 20 for supporting the electromagnetic coil body 30; a field core 10 for receiving the bobbin 20 and the electromagnetic coil body 30; a holder 100 mounted to the electromagnetic coil body 30; and a thermal fuse 60 installed to the holder 100 to be connected to the electromagnetic coil body 30, wherein the holder 100 having the thermal fuse 60 installed thereto is provided with an elastic member for elastically supporting the thermal fuse 60 upwards. Thus, the height of the thermal fuse 60 installed to the holder 100 can be adjusted.

Abstract: An electromagnetic clutch is provided with: a clutch hub which is connected to a shaft member (one of a pair of rotation members); a clutch housing which is connected to a hollow shaft (the other of a pair of rotation members); a rotor which is connected to the clutch housing; a main clutch (clutch member) which is disposed between the clutch hub and the clutch housing; and an electromagnet which operates the main clutch. An end surface of the clutch housing and an end surface of a core of the electromagnet are disposed to be opposed to each other with the rotor interposed therebetween in an axial direction. The end of the rotor in a side of the clutch housing is formed with an extension portion which extends to the clutch housing in the axial direction. An outer periphery of the clutch housing is connected to the extension portion through a connection portion. The connection portion is disposed outside the main clutch in a radial direction.

Abstract: In an electromagnetic clutch apparatus for forming a magnetic path in a circulating shape by an electromagnet at a pilot clutch alternately arranged with a main outer plate and a main inner plate and capable of controlling to transmit a torque between a clutch housing and a cam plate by being engaged in an axial direction and at a surrounding of a nonmagnetic portion continuously formed in the axial direction of a middle portion in a diameter direction of the pilot clutch to carry out an engaging, the nonmagnetic portion is formed by through holes in a circular arc shape having bridge portions for maintaining a shape in a diameter direction of the pilot clutch therebetween in a peripheral direction, and the bridge portion is divided in the diameter direction of the pilot clutch and a nonmagnetic member is interposed between divisions thereof.

Abstract: The present invention relates to an assembling structure of field coil, which has a simple mounting structure for a diode and a resistor to cut an off-noise of an electromagnetic clutch and to prevent damage of peripheral parts due to surge voltage generation when power source applied to an electronic coil body is cut off, thereby improving a mounting efficiency, reducing a manufacturing cost by reduction of the number of parts, and realizing an automatic production. The assembling structure of field coil includes an electronic coil body (101), a core ring (110) and a sleeve (120) having a first and second terminals (131) (132), and a case that has a receiving part (135) and a first and second connection parts (136) (137).

Abstract: An electromagnetically operable friction disk clutch having a electromagnet as well as having a rotor and an armature element to which the electromagnet can apply a magnetic field for interaction of the rotor and armature element, the armature element being arranged on a resting means which moves the armature element along a rotation axis of the rotor by magnetic force through a movement distance to a stop position on the rotor, and returns elastically without any magnetic forces to a position in which the armature element and the rotor can move, with respect to one another, without touching. According to the invention the resetting means comprise not only an elastic component but also a plastic component which at least partially compensates for the increase in the original movement distance resulting from wear by plastic deformation of the resetting means.

Abstract: The present invention relates to a field coil assembly of an electromagnetic clutch for a compressor, in which a coil wire of an electromagnetic coil body exposed to a protrusion of a bobbin is electrically connected with a compressing portion of a coil wire formed at one side end portion of terminals mounted inside a sleeve, and the terminals and the electromagnetic coil body are molded with the resin, thereby preventing permeation of foreign matters from the outside, preventing disconnection of the coil wires due to vibration, and simplifying a manufacturing process.

Abstract: An electromagnetic clutch includes a first magnetic member with a large-diameter cylindrical portion made of a magnetic metal and a second magnetic member with a small-diameter cylindrical portion made of a magnetic metal and contained in the large-diameter cylindrical portion are joined to an annular member of a non-magnetic material interposed between the large and small-diameter cylindrical portions to constitute a magnetic path forming member. The outer and inner circumferential edges of the annular member are welded to the large-diameter cylindrical portion and the small-diameter cylindrical portion, with the front end surface of the annular member receding a second predetermined distance (L2) from the front end surfaces of the large and small-diameter cylindrical portions. Then, the front end surfaces of the large and small-diameter cylindrical portions are cut until the receded distance of the front end surface of the annular member becomes a first predetermined distance (L1).

Abstract: Autopilot control of an aircraft is accomplished using a servo wherein the input shaft and output shaft are collinear. In one embodiment, the output shaft is supported, in part, by the input shaft. In further embodiments an engage clutch mechanism is provided to allow decoupling of the motor from the output shaft, and a slip clutch mechanism is provided to limit the torque output of the servo to enhance the safety of operation. The collinear shaft arrangement enables the engage clutch mechanism and slip clutch mechanism to synergistically utilize components for multiple functions.

Abstract: A tuning method for the exciting current-transmission torque characteristic of a power transmission apparatus is provided. A yoke (36), which supports an electromagnet (33), is accommodated in a groove (53) and is apart from the groove by a first distance (L2) and a second distance (L4). The exciting current-transmission torque characteristic is tuned by varying the first distance while keeping the second distance fixed. When the first distance is varied, the variation of the magnetoresistance of a magnetic path is relatively small. Therefore, the exciting current-transmission torque characteristic is more accurately tuned.

Abstract: An electromagnetic friction clutch has at least two clutch parts that are mounted so as to be rotatable relative to each other and movable toward and away from each other and that touch each other with a contact force in the position of use. The clutch parts are located in a magnetic circuit, which is guided in the clutch parts in a soft magnetic material in sheet form. Positioned in the magnetic circuit is an electromagnet having a soft magnetic core and a coil. The magnetic circuit has air gaps between the soft magnetic core and at least one of the clutch parts. The flux density in the magnetic circuit, and thus the contact force, is modifiable via the current applied to the coil. The magnetic flux changes at at least ten flux crossover points one after the other in the direction of flow between the clutch parts. The cross section of the magnetic flux in at least one air gap is at least five times greater than the smallest flux cross section in the soft magnetic material.

Abstract: The invention proposes an electromagnetically actuated, single-surface friction coupling without a rotor slip-ring, having a rotor element (2), a fixed magnet body (6) and a pot-shaped armature element (28) mounted so that it can be displaced axially. A cylindrical jacket shaped area (28B) of the armature element (28) extends with a narrow air gap along an outer jacket surface (12) of the magnet body (6). Between the armature element (28) and a friction surface (30) of the rotor element there is a working air gap (S) that can be bridged. To keep the moment of inertia on the drive output side as small as possible, it is proposed to arrange the rotor element (2) on the drive output side and the armature element (28) on the drive input side.

Abstract: An electromagnetic coupling apparatus interposed between a fixed housing and a rotating member. The electromagnetic coupling apparatus includes a multiplate brake mechanism, a ringlike core member fixed in the housing, an annular exciting coil accommodated in an annular groove of the core member, and a ringlike armature member opposed to the annular groove of the core member. The armature member has an outer diameter larger than the outer diameter of the core member. The electromagnetic brake further includes a cylindrical pressure member having one end fixed to an outer circumferential portion of the armature member and the other end engaged with the multiplate brake mechanism. The cylindrical pressure member surrounds the core member so as to be movable in a direction of applying a pressure to the multiplate brake mechanism as being guided by the core member. The opposed portion between the core member and the armature member is formed by tapered end surfaces each having a predetermined tapered angle.

Abstract: The invention proposes an electromagnetically actuated, single-surface friction coupling without a rotor slip-ring, having a rotor element (2), a fixed magnet body (6) and a pot-shaped armature element (28) mounted so that it can be displaced axially. A cylindrical jacket shaped area (28B) of the armature element (28) extends with a narrow air gap along an outer jacket surface (12) of the magnet body (6). Between the armature element (28) and a friction surface (30) of the rotor element there is a working air gap (S) that can be bridged. To keep the moment of inertia on the drive output side as small as possible, it is proposed to arrange the rotor element (2) on the drive output side and the armature element (28) on the drive input side.

Abstract: The object of the present invention is to provide an electromagnetic friction connecting apparatus, which allows the easier operations associated with the installation of an exciting coil or a search coil in a core element. Input and output terminals having second horizontal parts extending in the vehicle inward direction and second vertical parts extending from the ends of the second horizontal parts into the radial outward direction are provided for the exciting coil and the search coil. Each end of the second vertical parts is situated radially inside a periphery surface of the exciting coil. Holes which allow the respective ends of the second vertical parts of the input and output terminals to face the outside are made on the core element and the housing. They are connected to the ends of the second vertical parts of the input and output terminals by inserting couplers into these holes.

Abstract: A driveline master clutch assembly is disclosed where a unidirectional ball ramp mechanism is used to apply a clamping load to a clutch pack for frictionally coupling a prime mover such as an engine to a gear change transmission. The ball ramp mechanism includes index plates to limit the rotation of a control ring and an activation ring such that the energized ball ramp mechanism increases in separation distance to increase the clamping force on the clutch pack whenever there is slippage in the clutch pack irregardless of the direction of torque flow through the master clutch assembly.

Abstract: A driveline master clutch assembly is disclosed where a unidirectional ball ramp mechanism is used to apply a clamping load to a clutch pack for frictionally coupling a prime mover such as an engine to a gear change transmission. The ball ramp mechanism includes index plates to limit the rotation of a control ring and an activation ring such that the energized ball ramp mechanism increases in separation distance to increase the clamping force on the clutch pack whenever there is slippage in the clutch pack irregardless of the direction of torque flow through the master clutch assembly.

Abstract: A ball ramp mechanism is used to apply an axial force in the same regardless of the direction of the flow of torque whenever there is relative rotation between an input shaft and an output hub using unidirectional grooves in both a control ring and an activation ring where a first index plate limits the rotation of the activation ring and a second index plate limits the rotation of the control ring relative to the input shaft. An electrical coil is used to induce a magnetic field in a coil pole to magnetically couple a coil armature to an intermediate plate and the intermediate plate to an activation plate to energize the ball ramp mechanism.

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 ball ramp mechanism is used to apply a clamping load to a clutch pack to rotationally couple an input shaft to an output shaft. The ball ramp mechanism is comprised of a control plate having a control extension radially extending therefrom and an activation plate having an activation extension radially extending therefrom and an intermediate plate disposed between the control extension and the activation extension where the control extension and the activation extension and the intermediate plate are frictionally rotationally coupled upon application of an electromagnetic field generated by a stationary coil acting through a rotating coil armature to activate the ball ramp mechanism. A gap sleeve contacts the control plate and the activation extension to limit the separation between the control extension, the intermediate plate and the activation extension.