Abstract: The present invention includes a position restriction structure disposed in a space between an auxiliary cover casing and a diaphragm spring and having a body part fixed to the auxiliary cover casing, a mounting part extending in a circumferential direction from the body part and coupled to the auxiliary cover casing, a first protrusion protruding in an axial direction from the body part toward an incision groove of the diaphragm spring and inserted into the incision groove to restrict movement in the radial direction and a second protrusion protruding in the axial direction from the body part toward the incision groove of the diaphragm spring and inserted into the incision groove to restrict movement in the rotational direction. The position restriction structure is installed on the auxiliary cover casing and restrains the movement in the radial and rotational directions of the diaphragm spring.

Abstract: A fast release mechanism for a twin plate friction clutch including a biasing member positioned between the intermediate plate and the flywheel surface, and a retaining member for retaining the biasing member in place relative to the intermediate plate or flywheel surface during installation. In one embodiment, the fast release mechanism comprises a spring and a clip that retains the spring in place relative to the intermediate plate. When used with positioner pins extending through the intermediate plate, each clip may be U-shaped and includes a hole on its upper wall and a slot on its lower wall sized to receive the pin. The arms defining the slot extend partly over the end of the springs to keep the spring in place.

Abstract: A pivot ring for a clutch includes a central axis; a plurality of circumferentially curved portions; a plurality of engagement portions, each engagement portion circumferentially disposed between respective first and second circumferentially curved portions from the plurality of circumferentially curved portions and including: an alignment portion; a first and second stiffened attachment portions extending in lines from the alignment portion to the adjacent curved portions; and, first and second circumferential distal ends. Each engagement portion is arranged to receive a respective lever for the clutch; and, the first and second distal ends are arranged to fixedly connect to the clutch. Also presented is a clutch assembly including: an axis of rotation; a pressure plate having opposing first and second surfaces; a plurality of levers, and the pivot ring. Each lever is pivotably connected to a respective engagement portion, such that the plurality of levers is displaceable to close the clutch.

Abstract: A friction clutch device, in particular for a drive train of a motor vehicle which is driven by internal, combustion engine, having a rotational axis, a housing, at least one pressure plate which can be displaced in the direction of the rotational axis relative to the housing for an actuation, and a spring device for loading the at least one pressure plate, in which friction clutch device the spring device has a first element for generating a pressure force which acts on the at least one pressure plate, and a second element which is separate structurally from the first element for transmitting an actuating force, in order to improve the friction clutch structurally and/or functionally.

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: A pivot ring for a clutch assembly which has a first annular segment, a second annular segment, and a radial segment. The first annular segment has a first face on a front side of the pivot ring and the second annular segment has a second face, predominately opposing the first face, on a back side of the ring. The radial segment is disposed between the first annular segment and the second annular segment, connecting the first annular segment and the second annular segment. The first annular segment, the second annular segment, or both the first annular segment and the second annular segment can include axial protrusions with arcuately shaped pivot portions. Preferably, in the clutch assembly, the pivot ring is disposed between the diaphragm spring and the pressure plate, allowing for rotational freedom between the pressure plate and the diaphragm spring.

Abstract: A clutch unit with a clutch hub mounted non-rotatably on a shaft. The clutch unit includes at least two clutch elements that can be brought into frictional engagement with one another for torque transmission when the clutch unit is actuated by a mechanical actuation device with the help of cable-pull. The mechanical actuation device is attached to and held on the clutch unit.

Abstract: A clutch release bearing (21) that is in contact with a disk spring is provided. The clutch release bearing (21) includes at least one curved contact surface (12, 28, 30, 33) that is located at a radial distance from the axis of rotation (4) of the clutch release bearing (21) and is used for contacting at least one end (39) of at least one spring tongue (40) of the disk spring.

Abstract: A clutch cover assembly (1) is a clutch cover assembly for pressing and releasing a friction member of a clutch disk assembly against and from the flywheel of an engine, and includes a clutch cover (2), a pressure plate (3), a diaphragm spring (4), a cone spring (14), and a limiting mechanism (10). The limitation mechanism (10) limits movement of the pressure plate (3) to the flywheel (51) side when the amount of wear of the friction member (53) has reached a maximum allowable wear amount.

Abstract: A friction clutch for a drive train, the clutch including a pressure plate rotatably fixed and axially displaceable relative to a housing. A disc spring is provided between the housing and the pressure plate to axially act on the pressure plate. An adjusting device is effective between the housing and the disc spring to compensate for friction lining wear of a clutch plate that interacts with the pressure plate when the clutch is operated in the drive train. The disc spring is pivotable relative to an annular support carried by the housing. An axial force is applied to the disc spring in the direction of the support by springs that include a leaf-spring, a sensor spring, and an additional spring.

Abstract: Arrangement for operating a clutch, in particular a clutch in the power train of a motor vehicle, comprising a means of transmission that is mounted movably in an operating direction with respect to a support. The support is flexibly mounted in the direction of operation with respect to a housing.

Abstract: The clutch cover assembly includes a clutch cover, a pressure plate, and a diaphragm spring. The pressure plate is arranged to rotate as an integral unit with the clutch cover and move in an axial direction with respect to the clutch cover, and to press a friction member toward a flywheel. The diaphragm spring is supported on the clutch cover and serves to apply a force against the pressure plate toward the flywheel. The clutch cover has an annular clutch cover body and a plurality of plate-like support sections that are provided on an inner circumferential portion of the clutch cover body and serve to support the diaphragm spring such that the diaphragm spring can undergo elastic deformation. The support sections are configured such that a dimension of a tip end of the support section tapers gradually to a smaller dimension in a circumferential direction.

Abstract: The invention concerns a device for coupling a rotor of a rotating electrical machine with the gearbox primary shaft of a motor vehicle heat engine. The device is characterized in that the hub (7) of the rotor (6) is coupled with the primary shaft (8) by a mating part (25) comprising an externally toothed crown (26) meshing in the hub (7) and a central sleeve (27) coupled with the primary shaft (8) through a splined connection (28) and in that ends (29) and (30) of the toothed crown (26) and of the central sleeve (27) of the part (25) are centered respectively in the hub (7) and on the primary shaft (8) in sliding arrangement. The invention is applicable in the automotive industry.

Abstract: A clutch cover assembly (1) is a clutch cover assembly for pressing and releasing a friction member of a clutch disk assembly against and from the flywheel of an engine, and includes a clutch cover (2), a pressure plate (3), a diaphragm spring (4), a cone spring (14), and a limiting mechanism (10). The limitation mechanism (10) limits movement of the pressure plate (3) to the flywheel (51) side when the amount of wear of the friction member (53) has reached a maximum allowable wear amount.

Abstract: A clutch spring kit that is particularly suited to replacing a standard motorcycle pressure plate in a diaphragm spring biased clutch assembly. The clutch assembly is activated by centrifugal force acting on spherical deflection elements. A plurality of pocket elements are generally arranged in an annular array formed in the spring side of a clutch pressure plate. The pocket elements are generally disposed radially inwardly of and adjacent to an upstanding lip element on the first side of the pressure plate. The pocket elements include ramps that extend within the pocket elements generally outwardly toward the lip element and angularly upwardly towards the spring side. A spherical deflection element, such as a ball bearing, is received in each of the pocket elements for generally radial movement along the ramp. A diaphragm spring, the periphery of which is confined by the lip element, is in spring biasing association with the first side of the pressure plate.

Abstract: A friction clutch assembly connects driving and driven shafts and has a pressure plate axially moveable between an engaged position transmitting torque from the driving shaft to the driven shaft and a disengaged position. A cover is mounted on the flywheel and a spring is mounted on the cover. The spring urges the pressure plate into the engaged position and compression of the spring allows for movement of the pressure plate to the disengaged position. At least one lever assembly includes a housing mounted on the cover and a lever pivotable in the housing to apply an axial force urging the pressure plate to the engaged position.

Abstract: To provide a clutch release mechanism which can restrain vibrations of a ball while allowing the ball to be loosely fitted when it is not in operation to ensure the engaged state of a clutch. A clutch release mechanism is configured in such a manner that a gap is defined between a clutch cam plate or a receiving plate and a ball unit so that the ball unit can slide between the clutch cam plate and the receiving plate. An urging spring is provided for urging the ball unit in the direction of being slid toward the clutch cam plate. A C-ring for restricting the ball unit from coming out from a boss member is attached to the peripheral portion of the boss member.

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: The present invention broadly comprises a spring-retaining clutch housing including a housing wall and at least one opening in the wall. The opening is arranged to accept at least a portion of a lever spring for a clutch assembly. The lever spring includes at least one protrusion, extending from an outer circumference of the spring, with top and bottom sides. The opening defines edges in the housing wall axially displaced one to the other. The edges are arranged to be contacted by the top and bottom sides, respectively. In some aspects, contact with edges is arranged to provide forces in two, opposite axial directions. In some aspects, the housing is arranged for installation in a clutch assembly with a bearing and a clutch and the forces are for a pre-load force for the assembly bearing or with respect to an axial force generated during operation of the clutch.

Abstract: A pressure plate assembly for a friction clutch includes a housing connectable with an abutment arrangement for rotation therewith about an axis of rotation. The housing has an outer axial side and an inner axial side. A pressure plate is mounted in the housing so that it faces the inner axial side. The pressure plate is rotatable with the housing about the axis of rotation. The pressure plate includes actuating sections which extend past a radially outer edge of the housing. An energy storage element is mounted on the outer side of the housing such that the energy storage device exerts a force on the actuating sections for urging the pressure plate away from the inner axial side. An assembly pretensioning arrangement is operative for holding the energy storage element in a pretensioned assembly position in which the energy storage device does not exert a force on the housing.

Abstract: A diaphragm spring for a friction clutch includes a ring-like body area and a plurality of spring tongues arranged in a row in the circumferential direction and extending radially inward from the body area. A stiffening rib formed in at least one of the spring tongues extends radially into the body area.

Abstract: A pressure plate assembly for a friction clutch includes a housing connectable with an abutment arrangement for rotation therewith about an axis of rotation. The housing has an outer axial side and an inner axial side. A pressure plate is mounted in the housing so that it faces the inner axial side. The pressure plate is rotatable with the housing about the axis of rotation. The pressure plate includes actuating sections which extend past a radially outer edge of the housing. An energy storage element is mounted on the outer side of the housing such that the energy storage device exerts a force on the actuating sections for urging the pressure plate away from the inner axial side. An assembly pretensioning arrangement is operative for holding the energy storage element in a pretensioned assembly position in which the energy storage device does not exert a force on the housing.

Abstract: A friction clutch assembly that is adapted particularly for use in a powertrain for a vehicle for controlling transfer torque to traction wheels for the vehicle. The torque capacity of the clutch assembly is modified by adjusting the effective clutch engaging force. Pressure balance springs oppose a primary clutch spring engaging force. The compression distance of the pressure balance springs is controlled to achieve an effective clutch engaging force that accommodates varying operating torque requirements.

Abstract: A diaphragm spring for a friction clutch includes a ring-like body area and a plurality of spring tongues arranged in a row in the circumferential direction and extending radially inward from the body area. A stiffening rib formed in at least one of the spring tongues extends radially into the body area.

Abstract: In a clutch device 1, a second flywheel assembly 5 is axially movable within a predetermined range relative to a crankshaft 2, and a flywheel 21 has a friction surface 21a on a side remote from an engine. The damper mechanism 6 elastically couples the flywheel 21 to the crankshaft 2. The clutch disk assembly 9 has a friction facing 54 neighboring the first friction surface 21a. The clutch cover assembly 8 is attached to the flywheel 21, and biases the friction facing 54 toward the first friction surface 21a. The release device 10 applies an axial load directed toward the engine to the clutch cover assembly 8, and thereby releases the load toward the friction facing 54. The relative rotation suppressing mechanism 24 couples the second flywheel assembly 5 to the disk-like member 13 when the clutch cover assembly 8 receives the axial load directed toward the engine.

Abstract: A release bearing is provided for transmitting release force to a corresponding force accumulator of each of the first and second clutch regions of the double clutch assembly, the release bearings being arranged in succession in the direction of an axis of rotation. Each of the release bearings has an action region for a respective release-force transmission member to act on, the release-force transmission members interacting on the same axial side of the release bearings. The action region of one of the release bearings includes a sleeve-like action element which is surrounded by the other release bearing. The sleeve-like action element has a holding region, by means of which the other release bearing is secured so that it cannot be removed from the sleeve-like action element.

Abstract: A double clutch assembly comprising a first clutch area for the optional production of a torque-transmitting connection between a drive element and a first driven element, a second clutch area for the optional production of a torque-transmitting connection between the drive element and a second driven element, and a common engaging/disengaging mechanism, by means of which the first clutch area and the second clutch area can be actuated to produce or to nullify the torque-transmitting condition.

Abstract: Friction clutch for use in the drive train of a motor vehicle with an input part, a clutch housing, at least one clutch disk in working connection with a takeoff element, and a pressure plate working together with the input part, the force of a stored-energy element acting on the pressure plate to transmit torque to the clutch disk. The radially outer area of the input part has axially oriented walls extending along at least part of the circumference to cooperate with the pressure plate.

Abstract: A diaphragm clutch mechanism for a motor vehicle engine having a friction lining adapted to be clamped with an annular diaphragm between a reaction plate and a pressure plate. A cover fixed to the reaction plate and integral in rotation with the pressure plate which is also mobile in axial translation relative to the reaction plate, and an assist mechanism includes a Belleville washer which co-operates with the diaphragm so that the load exerted on the pressure plate should be substantially constant whatever the degree of wear of the friction lining when the clutch mechanism is in engaged position. The assist Belleville washer is supported on the diaphragm or on the cover that forms a front stop. The assist Belleville washer is supported on a rear stop borne by the cover so as to be slightly stressed when the clutch mechanism is in the released position.

Abstract: A friction clutch (10) having a device to cushion engagement of the clutch, the cushioning device comprising at least one resilient device (26) arranged in a recesses (28) in a first component (11) of the clutch and which acts to bias a second component (19a) of the cushioning. The or each resilient device is arranged to act on the second component via an insert (37) mounted in a recess (38) in the second component. The or each resilient device may comprise a pair of back-to-back belleville washers (27a, 27b) which are held in the recess in the first component by a bolt (30) which engages with a pillar (29) in the centre of the recess. An outer edge of the outermost washer (27b) protrudes from the recess to engage with the second componet.

Abstract: A pressure plate subassembly for a friction clutch includes a housing connectable to an abutment arrangement for joint rotation about an axis of rotation, a pressure plate arranged in the housing so that the pressure plate is rotatable together with the housing about the axis of rotation (A) and so that the pressure plate is displaceable relative to the housing in the direction of the axis of rotation, and a force accumulator for generating a pressure force, the force accumulator being supported on the housing and on the pressure plate. The force accumulator is arranged outside the housing.

Abstract: A friction clutch wherein a pressure plate is axially movably but non-rotatably coupled to a cover and is biased by a diaphragm spring to urge the friction linings of a clutch disc against a flywheel which is driven by the engine of a motor vehicle. The diaphragm spring is tiltable relative to a seat which is carried by the cover, and a second spring is provided to bias a portion of the seat against the diaphragm spring. The latter can be moved axially of the flywheel to compensate for wear upon the friction linings, particularly when the flywheel is idle or is driven at a relatively low speed.

Abstract: A friction clutch wherein a pressure plate is axially movably but non-rotatably coupled to a cover and is biased by a diaphragm spring to urge the friction linings of a clutch disc against a flywheel which is driven by the engine of a motor vehicle. The diaphragm spring is tiltable relative to a seat which is carried by the cover, and a second spring is provided to bias a portion of the seat against the diaphragm spring. The latter can be moved axially of the flywheel to compensate for wear upon the friction linings, particularly when the flywheel is idle or is driven at a relatively low speed.

Abstract: A friction clutch wherein a pressure plate is movable axially of and rotates with a housing which is driven by the engine of a motor vehicle. The pressure plate cooperates with a coaxial engine-driven counter-pressure plate to bear upon the respective friction linings of a clutch disc when the clutch is engaged to drive the input shaft of a transmission in the power train of the vehicle. A diaphragm spring is tiltable relative to an annular seat at the inner side of the housing and urges the pressure plate against the adjacent friction linings when the clutch is engaged. An automatic wear compensating unit serves to move the diaphragm spring and the seat axially relative to and away from the inner side of the housing to thus compensate for wear upon the friction linings. The diaphragm spring has resilient prongs which bear, directly or indirectly, upon portions of the housing to urge the diaphragm spring against the seat and to thus bias the seat toward the inner side of the housing.

Abstract: The friction clutch comprises a clutch disk arrangement which can be brought into frictional engagement with associated friction surfaces by the action of a movably mounted thrust plate arrangement. The actuation device includes a pressure medium force cylinder arrangement by means of which the friction clutch can be actuated by an actuating member; a measuring arrangement detects an actual actuation. A control/regulating valve arrangement is connected with a pressure medium source, with a pressure compensation opening or a pressure compensation reservoir and with the pressure medium force cylinder arrangement, by means of which control/regulating valve arrangement the pressure medium force cylinder arrangement can be actuated depending on the actual actuation and on a reference actuation which can be predetermined. According to one aspect of the invention the measuring arrangement detects an adjusting path of at least one thrust plate of the thrust plate arrangement as actual actuation.

Abstract: A multi-plate clutch for a motor vehicle has a U-shaped spring element fastened to an intermediate plate for holding adjacent pressure plates at a distance from one another. The intermediate plate is reliably held between the pressure plates. Grinding of friction facings arranged between the intermediate plate and the pressure plates is accordingly minimized. The spring element is arranged in an area of an external toothing of the intermediate plate and therefore does not contribute to an increase in the radial dimensions of the multi-plate clutch.

Abstract: A friction clutch wherein a damper which operates with friction between the housing and the clutch spring serves to minimize or to prevent axial stray movements of the diaphragm spring relative to the housing. This eliminates chatter and/or other forms of noise which unrestricted axial oscillatory movements of the diaphragm can cause in a conventional friction clutch or in a power train employing a conventional friction clutch.

Abstract: A friction coupling for use in particular in the drive train of a motor vehicle includes a clutch casing, a pressure plate which is guided in a rotationally fixed manner with respect to the clutch casing, at least one clutch disk and a spring device containing about 40-60% nickel. A method for coating a nickel-base material, in particular the above mentioned spring element for friction clutches, wherein at least part of the surface of the spring device contains boride, and also a method for producing such a spring device which includes a heat treatment are also disclosed.

Abstract: A friction clutch for a motor vehicle having a clutching friction member and clutching mechanism with a cover and a clutch thrust plate. A resilient clutch member and disengaging gear is disposed between the rear surface of the thrust plate and the cover for moving the clutch thrust plate towards the cover. The clutch is provided with a wear adjustment device, a resilient servo member and a resilient smooth engagement member. The resilient servo member is mounted outside the clutching friction member. The load pressure feature combining the load pressure features of the resilient servo member and smooth engagement member globally follows the load pressure feature of an axially operating resilient clutching member.

Abstract: A friction clutch for motor vehicles has a casing which can be connected in a rotationally fixed manner to a driven flywheel mass. A pressure plate is arranged inside the casing with a pressure spring supported between the clutch casing and the pressure plate so that the pressure plate presses a clutch disk, which is provided with friction linings, onto the flywheel mass. The pressure spring, during engagement of the clutch, exerts a varying pressure force on the pressure plate. The friction clutch also having a device which acts on the pressure plate and varies essentially proportionally to the force of the pressure spring to force of the pressure plate.

Abstract: The friction clutch comprises a cover (8) with a base (80), a pressure plate (3) with a front friction face (30) for co-operating with a clutch friction and, set between the pressure plate (3) and the base (80) of the cover (8), a diaphragm (2) with a peripheral part extended inward by fingers (23) to oppose at will, by means of a nose (11) of a clutch bearing (10), the action of said peripheral part (21), a booster elastic washer (7) acting on the fingers (23) of the diaphragm (2) in the declutching direction resting on the cover (8): the booster washer (7) is arranged between the cover (8) and the leading-edge piece or nose (11) such that it is adapted to operate on the fingers (23) of the diaphragm (2) via said leading-edge piece or nose (11).