Abstract: Methods and systems are provided for a pulley insert. In one example, a pulley insert for a FEAD pulley comprises a first member insertable into a pulley such that the first member is rotatable within the pulley, the first member comprising a cavity for receipt of a second member; and a second member insertable into the cavity of the first member such that, when the first member is inserted into a pulley and the second member is inserted into the cavity of the first member, the second member prevents rotation of the first member relative to the pulley.

Abstract: A transmissive joint has an elastic response for transmitting a torsional load capable of ensuring the transmission in the absence of coaxiality between two actuating and actuated devices, and allowing the internal passage of cabling or possible accessory components along the axis of transmission/torsion.

Abstract: An electric machine and method for operating an electric machine are provided. The electric machine includes a first rotational component and a second rotational component rotationally engaging the first rotational component via a splined interface. The electric machine further includes a first lash reducing spring radially positioned between a first set two adjacent splines in the splined interface.

Abstract: The present invention relates to a speed reducer for a vehicle. The speed reducer includes: a first coupler having, on one side thereof, a first coupling portion, to which a motor shaft or a worm shaft is coupled, and, on the other side thereof, a plurality of first protrusions, which are spaced apart from each other in a circumferential direction while protruding in an axial direction, in which the first protrusions are formed in a manner in which a circumferential width of each of the first protrusions is narrowed toward an inner side from an outer side so as to form a first outer support portion as a radial outer end and a first inner support portion as a radial inner end; and a second coupler configured to be coupled to the first coupler to transmit a rotational force to the first coupler.

Abstract: A driving arrangement for a snow blower device that includes a power source and an impeller, comprises a main body and a drive train within and about the main body. The drive train comprises a right angle gear box in driving engagement with both the power source and the impeller of the snow blower device for transferring torque from the power source to the impeller, thereby driving the impeller of the snow blower device. A cooling system for cooling a main power source configured to drive a snow blower of the snow blower device, comprises an auxiliary power source operatively coupled to the main power source and a fan operatively coupled to the auxiliary power source for cooling the main power source.

Abstract: Embodiments of the present invention provide improved overrunning pulleys that overcome one or more of the deficiencies in the prior art as discussed herein. Embodiments of the present invention provide pulleys that are “springy” in the torque direction, yet have a lower effective spring constant (e.g., are less stiff) over a greater angular range. Further, in at least some embodiments, the inventive pulleys use a low cost and simple torque transfer geometry. Further, in at least some embodiments, the inventive pulleys afford significant overrun. Further, in at least some embodiments, the inventive pulleys are radially small in an overall envelope, for example, in order to allow an alternator to reach its highest possible rotational speed, and thus output, during engine idle. Further, in at least some embodiments, the inventive pulleys are more durable, as they offer the aforementioned dynamics in both directions (torque and counter-torque).

Abstract: A vibration damper and a drive shaft comprising a vibration damper having a small radial extent is provided. A first shaft part is provided with a sleeve and a second shaft part is provided with an inner part which extends axially into the sleeve. The sleeve and the inner part include longitudinal rotary drivers that engage negative profiles of an damping part which is elastically deformable in the direction of shaft rotation and includes at least one decoupling ring and at least one pair of rotation limiting rings.

Abstract: Embodiments may communicate via an electromagnetic radiator, or light source, that can be amplitude modulated such as light emitting diode lighting via receivers that can determine data from light received from the radiator. Some embodiments decode data of a packet transmitted from modulated lighting by means of a device with a low sampling frequency such as a relatively inexpensive camera. Many embodiments determine locations of start frame delimiters in packets. Several embodiments implement repeat decoding on packets of the same data to reduce packet error rates. Some embodiments are intended for indoor navigation via photogrammetry using self-identifying light anchors. In many embodiments, the data signal may be communicated via the light source at frequencies causing flicker that is not perceivable to the human eye.

Abstract: A damper for a crankshaft of a reciprocating engine includes an inner shell and an inertia ring, the inner shell and the inertia ring having a plurality of teeth and grooves that are intermeshed with one another. The damper further includes a plurality of damping pads positioned between the teeth of the inner shell and the grooves of the inertia ring. The inertia ring is constrained from translating in the axial direction and the radial direction with respect to the inner shell and is rotatable with respect to the inner shell in the circumferential direction through a constrained range by compressing the damping pads.

Abstract: An elastic shaft coupling including a first circular cylindrical shaft hub including first claws distributed over an outer circumference of the first shaft hub and offset from one another; and a second circular cylindrical shaft hub including second claws distributed over an outer circumference of the second shaft hub and offset from one another, wherein the first claws and the second claws engage one another through protruding into respective intermediary spaces, wherein an elastic coupling element is respectively arranged between adjacent first claws and second claws, wherein at least an outer circular cylindrical circumferential surface of a shaft hub is provided with mounting surfaces for the claws, wherein the outer circumferential surface is configured in a portion of the mounting surfaces so that it differs from the circular cylindrical contour and the claws supported by the hub contact the hub side mounting surfaces in a form locking manner.

Abstract: A torsional vibration damper includes a one-piece integral hub and annular inertia mass assembly. Between the hub and the inertia mass are intermediate rings connected integrally with the mass and the hub connected integral spokes. Elastomeric members are compression fitted within spaces formed between the hub and the mass.

Abstract: A torsional vibration damper includes a one-piece integral hub and annular inertia mass assembly. Between the hub and the inertia mass are intermediate rings connected integrally with the mass and the hub connected integral spokes. Elastomeric members are compression fitted within spaces formed between the hub and the mass. With this design, the damper can be formed from a polymeric material with an embedded annular weight.

Abstract: A pump assembly constructed to allow unloaded starting of the pump. The assembly includes a pump body, a permanent magnet rotor, a rotor shaft, a pump cover, a shaft sleeve and an impeller. The impeller includes a holding chamber for holding the shaft sleeve which is arranged proximate a center of the impeller. A stopping rib extends inwardly from an internal wall of the holding chamber of the impeller. The shaft sleeve includes a tubular body with a starting rib extending laterally from the body. During operation of the pump, the starting rib interferes with the stopping rib. A number of shock absorbing pads are disposed between the starting rib and the stopping rib and maintained thereat by a notch and ridge association that extends along each rib and pad. The pump includes a space that allows rotation of the starting rib relative to the stopping rib which provides unloaded starting of the pump.

Abstract: An actuator for use in a fuel system. The actuator has a first metallic section adapted to be coupled to a motor, a second metallic section adapted to be coupled to a valve, and a nonmetallic section coupled to the first and second metallic sections for transmitting torque from the first metallic section to the second metallic section.

Abstract: A spline connector is provided which includes a first spline connector member. A second spline connector member is provided having backlash between spline teeth of the spline connector members. A spring is provided which biases the teeth of the spline connector members to engage with one another to counter separation resultant from negative torque oscillations.

Abstract: An adapter device and a production series of adapter devices for connecting an input shaft, e.g., a motor shaft of a motor, e.g., an electric motor, to a device to be driven, e.g., to a pinion of a gear unit, including an adapter shaft for the rotatably-fixed connection to the device to be driven, an intermediate piece engaged with the adapter shaft, and a sub-component that is engaged with the intermediate piece and is detachably connectible with form-locking to an input shaft, particularly a motor shaft. The sub-component includes a bore hole for accommodating the input shaft in the sub-component, and the sub-component has at least three claws for forming the coupling. The adapter shaft, at its second end, thus at the end facing the intermediate piece, has at least three claws for forming a coupling. The intermediate piece is provided between the claws of the sub-component and the claws of the adapter shaft.

Abstract: A power tool includes an impact damping mechanism for damping an impact in a direction of rotation of a speed reduction mechanism portion 8.

Abstract: A vehicle comprises a vehicle body. An internal combustion engine is mounted to the vehicle body. The engine comprises a crankshaft mounted in a crankcase. A drive system is mounted to the vehicle body. A transmission is coupled with the drive system. A coupling system couples the engine with the transmission. The coupling system comprises a drive member and a driven member. The drive member is coupled with the crankshaft. The driven member is coupled with the transmission. The driven member is rotatably mounted in the crankcase. The drive member is coupled with the driven member.

Abstract: A flywheel system includes an annular rim mounted for high speed rotation on a flywheel hub. The hub has a radially splined exterior surface facing radially outwards. The rim includes an annular rim liner having an axis of rotation coinciding with the axis of rotation of the hub, and having an inner surface facing radially inward. The inner surface of the rim liner has integral splines projecting radially inward and extending axially. The rim liner splines mate with the hub splines. The flywheel rim liner has a modulus of elasticity el, and a density ?l, and a liner ratio Rl equal to El/?l. The flywheel rim has a modulus of elasticity er in the hoop direction and a density ?r; and a rim ratio Rr equal to Er/?r. The materials and configuration of the rim and rim liner are designed so that Rl is less than or equal to Rr, so said flywheel rim liner grows radially with the rim.

Abstract: A device for transmitting motion between the rotor of a synchronous permanent-magnet motor and the working part, having an increased free rotation angle, which comprises at least two motion transmission couplings which mutually cooperate in a kinematic series. Each coupling is constituted by at least one driving element which is eccentric with respect to the rotation axis and is rigidly coupled to a first component of the motion transmission system and by at least one driven element, which is also eccentric with respect to the rotation axis and is rigidly coupled to the component arranged kinematically after the preceding one. The angle covered by the elements of each coupling is, as a whole, less than a round angle. The intermediate components of the kinematic transmission have both a driven element and a driving element for receiving the motion from the preceding one and transmitting it to a subsequent one.

Abstract: An elastic shaft coupling and a manufacturing method of an element of the coupling, which realize reduction of the manufacturing cost while maintaining a sufficient strength of the coupling. The elastic shaft coupling has a coupling element which is formed by interposing between a joint member and a hollow shaft member an elastic member for flexing and deforming upon a relative rotation therebetween and forming stopper portions for restricting the relative rotation within a predetermined amount respectively on the joint member and the hollow shaft member. The stopper portion on the hollow shaft member side is formed by plastically processing the end portion of the material of the hollow shaft member into a flange shape.

Abstract: A power transmission device for transmitting torque of a driving unit to a driven unit includes a first rotator, a second rotator, and a torque transmission member. The first rotator is to be driven for rotation by the driving unit. The second rotator is coupled to the driven unit. The torque transmission member is made of an elastically deformable material for making contact with the first rotator and the second rotator to transmit torque from the first rotator to the second rotator. An outer periphery of the torque transmission member includes a contact surface for making contact with the rotators and a non-contact surface out of contact with the rotators. The non-contact surface is provided with an oxygen permeance suppression layer made of a material having an oxygen permeability that is less than that of the contact surface.

Abstract: A rotation force transmitter and a rotation force transmission mechanism are provided, which are light-weight and suppresses vibrations in the perimeter and radial directions. A junction flywheel, which is a rotation force transmitter, includes a pulley portion, a hub portion and elastic structures. An inside perimeter of the pulley portion and an outside perimeter of the hub portion are connected by the plurality of elastic structures absorbing vibrations in the perimeter direction and in the radial direction. The elastic structure has an annular member, and the annular member absorbs vibrations and torque fluctuations in the perimeter direction and in the radial direction transmitted from a rotation driving source such as a motor. Therefore, vibrations and torque fluctuations are prevented from being transmitted to a driven flywheel which is a rotated member provided with a rotation force by the motor.

Abstract: A drive arrangement for a motor vehicle includes a drive shaft, a coupling device, and a coupling arrangement. The drive shaft is connectable with the coupling device for transmission of force solely via the coupling arrangement. The coupling arrangement has a first toothing arrangement connectable with the drive shaft so that the first toothing arrangement is fixed with respect to rotation relative to the drive shaft and a second toothing arrangement connectable with the coupling device so that the second toothing arrangement is fixed with respect to rotation relative to coupling device. The first toothing arrangement and second toothing arrangement engage when the drive shaft and coupling device are coupled together for transmission of force.

Abstract: In a flexible joint having a first rotating body connected to a shaft of an engine, a second rotating body coaxially connected to the first rotating body via a first rubber damper, and a third rotating body whose outer circumference is coaxially coupled with the second rotating body via a second rubber damper and whose center axis is coaxially connected to a shaft of a compressor, the second rotating body is rotatably held by a front housing of the compressor. Accordingly, eccentric load acting on the joint according to the rotation thereof is received by the housing of the compressor so that the shaft of the compressor receives lower bending moment. Further, as the first and second rubber dampers are used, a composite elastic coefficient thereof is smaller so that torque fluctuation applied to the joint is adequately absorbed.

Abstract: An apparatus for reducing a noise and a vibration of a drain pump, including: a rotor rotated by a mutual interaction with a stator; a rotational shaft rotated by being directly combined to the rotor; a coupling cylinder combined to an end portion of the rotational shaft; a coupling tap protrusively formed on an outer circumferential portion of the coupling cylinder; an impeller including a receiving portion in which the coupling cylinder is received and being rotated by receiving a rotation force from the rotational shaft; an impeller tap protrusively formed on an inner circumferential portion of the receiving portion in the impeller and positioned at a predetermined part of a rotation trajectory of the coupling tap so as to contact with the coupling tap; and a buffer member of a ring shape with a gap therein located on a rotational path of the coupling tap to move along with the coupling tap in order to buffer between the coupling tap and the impeller tap when the two taps contact to each other.

Abstract: A power transmission system has a Neidhart structure in which a damper is shearing-deformed while being press-deformed when torque is applied to a pulley. The torque is transmitted from the pulley to a center hub by the reaction force in response to a vector component of the deformation of the damper, parallel to the pulley rotation direction, while a torque fluctuation is reduced by the deformation of the damper. Thereby, it is possible to set an elasticity modulus of the damper to be smaller. Therefore, it is possible to provide a compact power transmission system having a reduced torque fluctuation.

Abstract: A coupler for connecting first and second shafts has a male cross member pinned to the first shaft and a female body member clamped onto the second shaft. The female body member has a housing with internal splines interlocking with mating external splines on the cross member. A longitudinally split clamp has a sill portion integral with the female body member and a half clamp member engageable with the sill portion. The split clamp has a single locking bolt which reduces the time required for installation. The external splines are relieved at one end to allow the coupler to tolerate some misalignment between the shafts.

Abstract: An elastic shaft joint includes: a tube shaft; a shaft coaxially inserted in the tube shaft so that a predetermined axial region of the shaft overlaps with a predetermined axial region of the tube shaft; and a damper inserted between the predetermined axial region of the shaft and the predetermined axial region of the tube shaft for damping vibration and providing an elastic play in a rotation direction.

Abstract: A power transmission system wherein drive power is transmitted from a drive source to an auger transmission for rotating an auger, and a snow blower is provided. An overload protecting mechanism is located between the snow blower and the auger transmission, thereby absorbing overload to be exerted on a power delivery path between the drive shaft and the auger transmission. Thus, snow-removing operation is not interrupted even when the power delivery path encounters overload. The overload protecting mechanism may comprise, for example, either a friction coupling employing a plurality of friction plates or a rubber coupling employing cushion rubbers. The overload protecting mechanism is located in a large space between the auger transmission and the snow blower, allowing existing space to be effectively utilized.

Abstract: A slip joint assembly provides radial clearance compensation between a slip joint yoke and a receiving member. The slip joint yoke has a plurality of male splines formed externally thereon. The receiving member receives the splined yoke therein and has female splines which mate with the male splines of the yoke. The receiving member also has a plurality of circumferentially distributed, longitudinally extending, axis-parallel openings formed therein. The slip joint assembly further includes an elongated member having a C-shaped cross-section. The elongated member is compressibly received within each of the plurality of longitudinally extending openings and engages the splined shaft for providing a radial force between the splined shaft and the receiving member. This elongated member is preferably formed of a spring material to allow it to be compressible.

Abstract: A coupler for connecting first and second shafts has a male cross member pinned to the first shaft and a female body member clamped onto the second shaft. The female body member has a housing with internal splines interlocking with mating external splines on the cross member. A longitudinally split clamp has a sill portion integral with the female body member and a half clamp member engageable with the sill portion. The split clamp has a single locking bolt which reduces the time required for installation. The external splines are relieved at one end to allow the coupler to tolerate some misalignment between the shafts.

Abstract: A coupling has an inner member centered on and rotatable about an axis A and formed with a plurality of radially outwardly projecting short inner teeth and a radially outwardly projecting long tooth together defining a plurality of radially outwardly open pockets. The outer end of the long inner tooth defines an orbit centered on the axis and the outer ends of the short inner teeth lie radially inward of this orbit. An outer member coaxially surrounding the inner member is formed with a plurality of radially inwardly projecting short outer teeth and a radially inwardly projecting long outer tooth together defining a plurality of radially inwardly open pockets. The long teeth are angularly juxtaposed with each other and the inwardly open pockets each confront a respective one of the outwardly open pockets.

Abstract: A coupler for connecting first and second shafts has a male cross member pinned to the first shaft and a female body member clamped onto the second shaft. The female body member has a housing with internal splines interlocking with mating external splines on the cross member. A longitudinally split clamp has a sill portion integral with the female body member and a half clamp member engageable with the sill portion. The split clamp has a single locking bolt which reduces the time required for installation. The external splines are relieved at one end to allow the coupler to tolerate some misalignment between the shafts.

Abstract: A direction-dependent driving coupling between the rotor of a permanent-magnet synchronous motor and a working part. The coupling comprises at least one first eccentric driving tooth and at least one cantilevered elastomeric element which are rigidly coupled to a first one of the two components between which motion is to be transmitted; the cantilevered element is arranged peripherally close to a cylindrical wall, of which it partially follows the shape, and the wall is formed by a housing, in which the rotor is arranged, and is motionless, at start-up, with respect to the motorized component.

Abstract: A drive gear train including a flexible coupling built into one of the gears to absorb shock load forces generated during gear train operation. The flexible coupling can include an inner annular member having a series of circumferentially spaced vanes projecting away from the gear rotational axis, and an outer annular member having a series of circumferentially spaced vanes projecting toward the gear rotational axis in the spaces formed between the firstmentioned vanes. Resilient deformable plugs are disposed between the confronting vane surfaces to absorb peak load forces.

Abstract: A torsional pre-damping device for damping the impact between a hub and a hub disc. A crown insert (20) made of absorbent material is arranged between the engaging teeth (18) and the engaged teeth (19) of the loose meshing portions (16) defined between the disc and the hub.

Abstract: A drive assembly couples a driving mechanism, e.g., an engine, and a driven mechanism, e.g., a generator, to one another. The assembly includes a transmission member having a plurality of inwardly projecting fingers and a coupling having a plurality of outwardly directed projections interdigitated with the fingers. The projections include first and second projections which define a notch between them. A finger extends into the notch, thereby forming first and second pockets between the finger and the first and second projections, respectively. In the improvement, the first and second resilient devices are received in the first and second pockets, respectively. Each resilient device includes at least one spur projecting from it to prevent substantial rotation of the device in its pocket. In a more specific embodiment, alternating pairs of resilient devices are made, respectively, of natural rubber for good shock absorption and Buna N for resisting the harmful effects of oil.

Abstract: A rotatable apparatus includes a pair of rotatable members joined by a stress dissipating structure. The stress dissipating structure can be employed in a gear, sprocket, clutch or the like. In one aspect of the present invention, the stress dissipating structure includes an elastomeric material and a web which radially extend outward from the hub. In another aspect of the present invention, the stress dissipating structure includes a plurality of rotationally flexible spoke-like structures radially extending between the rim and the hub. In a further aspect of the present invention, corrugated spokes are used. An additional aspect of the present invention provides a stress dissipating structure employing various anti-buckling plate configurations. In still another preferred aspect of the present invention, the stress dissipating structure includes a plurality of rotatably deformable formations. Furthermore, the present invention provides a compressible washer stress reduction structure.

Abstract: An improved torsional vibration isolator assembly for an engine is provided which includes a non-linear spring device which effectively minimizes the transmission of torsional vibrations to the engine's gear train throughout all engine operating frequencies and conditions while limiting relative movement between the engine's crankshaft and crank gear so as to maintain timing error within acceptable limits. The improved torsional vibration isolator is designed to absorb torsional vibrations transmitted from the crankshaft so as to substantially isolate the entire engine gear train, including the crank gear, from the torsional vibrations throughout all engine operating conditions and frequencies, including at and below the natural frequency, i.e. crank resonance, of the crankshaft. The crank gear isolator includes resilient elements positioned in cavities formed between engaging projections formed on inner and outer rings of the assembly.

Abstract: A propeller is made up of a propelling unit having a plurality of blades, a driving unit for driving the propelling unit, and a plurality of deformable transmission units located between the propelling unit and the driving unit such that the transmission units are retained in the retaining slots of the propelling unit and the driving unit. The transmission units are tubular in shape and capable of deforming to absorb an impact force exerting on the transmission units in a direction perpendicular to the longitudinal axis of the transmission units, so as to safeguard the structural integrity of the propeller at such time when the propeller in motion is impacted on by a foreign object.

Abstract: The torsional flexible connection has two coaxial flanges or discs equipped with sets of equidistant radially or axially protruding blades which are interdigitated to form a plurality of wedge-shaped chambers whose sides intersect at the axis of the connection, all or some of which receive torque-transmitting flexible inserts which transmit force and rotation to one of the flanges/discs in response to the force and rotation transmitted from the other flange/disc or vice versa. Each insert is comprised of two or several elements of a streamlined shape placed at different distances from the axis, so that the dimensions of these elements in the direction of transmitted payload are proportional to their distances from the axis.

Abstract: A vibration-proof power take-off device for an engine includes a resilient support device for carrying the engine on a support, and a displacement absorbing joint for connecting an output shaft of the engine to a power take-off member. The displacement absorbing joint has a first joint member connected to the output shaft, a second joint member connected to the power take-off member, and a resilient member for resiliently interconnecting the joint members. The first joint member includes a first hub having radially projecting first transmitting fins and the second joint member includes a second hub concentrically surrounding the first hub and having radially projecting second transmitting fins. The intermediate member has intermediate fins opposed to the first and second fins in a rotational direction. Opposed surfaces of the intermediate fins and the first and second fins are interconnected through the resilient member.

Abstract: A marine drive for coupling a marine engine drive ring to a transmission drive shaft. A spider drive engages the drive ring and is provided with a plurality of rubber-cushioned trapezoidal lugs. The drive shaft is held in the spider drive by a central locking hub which is drawn tightly onto the drive shaft due to the tapered aperture in the spider drive. Wear-causing slippage of the drive shaft is thereby reduced.

Abstract: A cushion connector (10) used for above ground drilling has pin (11) and box (12) components at opposite ends. A housing (13) extends axially between the pin and box components. A drive spline (22) is operably connected to one of the components and extends outwardly from the axis (23) of the cushion connector (10). A plurality of drive blocks (24) extend inwardly from the inside diameter of the housing (13) and engage with keyways (69) of the drive spline (22). Drive lugs (71) connected to the inside of the housing (13) act on the drive blocks (24) and resilient cushion blocks (70). A spring (30, 60) extends between the pin (11) and box (12) components within the housing (13) and exerts axial force between them. The drive splines (22) are coaxial with the connector (10) and move axially under operation. Cushion blocks (70) are provided between the drive blocks (24) and drive lugs (71).

Abstract: A flexible shaft-coupling device comprises an annular first coupling member having circumferentially spaced vanes extending radially inwardly from its inner periphery and a second coupling member located within the annular coupling member. The second coupling member has circumferentially spaced vanes extending radially outwardly so as to protrude into the spaces between the vanes of the first coupling members. Resiliently distortable pads are located between adjacent vanes to enable torque to be transmitted between the vanes by compression of the pads. The pads are formed of laminations of resilient and less resilient materials. The device may be located within one end of a hollow shaft connected to the annular first coupling member.

Abstract: A resilient shaft coupling having two metal parts that include an inner coupling ring and, coaxial thereto, an outer coupling ring. The facing generated surfaces of the rings are formed with a number of substantially radial cams or dogs which mesh with one another alternately in the circumferential direction and extend to near the pertaining opposite generated surface. Each two circumferentially consecutive cams or dogs form a pair whose adjacent surfaces are concave and delimit a chamber whose longitudinal axis extends parallel to the rotational axis of the coupling, and in which a resilient coupling member is disposed. The coupling members are radially biased or pre-loaded by a predetermined amount, and are secured to the generated surfaces of the inner and outer ring coupling rings. With the coupling in its rest position, gaps or spaces are present between each resilient coupling member and each cam or dog, and permit the members to deform freely and thus to be stressed in shear.

Abstract: An installation for damping torsional vibrations in a gear drive, especially between the crankshaft and an output shaft of internal combustion engines, in which a gear wheel on the output shaft is connected with the output shaft by a friction clutch and an elastic coupling connected operatively in parallel thereto. To obtain a space-saving and operationally reliable structural unit to be assembled in a simple manner from preassembled units, the elastic coupling includes an inner coupling half and an outer coupling half each having radially directed webs as rotary abutments of interposed rubber elements; the outer coupling half is rigidly connected with the gear wheel and the friction clutch is arranged between the end faces of the gear wheel and the webs of the outer coupling half and is held centered by a prestressed spring element between these end faces up to assembly on the output shaft.

Abstract: The invention relates to a multi-disc brake comprising a stationary rotary disc (1) and a movable rotary disc (2) which is mounted on a splined sleeve (5) sliding on the hub (3) of axis (14) and with which the disc (1) is solid. An assembly of friction pads (6-9) can interact with the discs (1, 2) under the action of a hydraulic jack (13). To prevent any rattling at the start of each braking operation, elastic blocks (50) are inserted inside housings provided in the system of splines of the sleeve (5) and of the hub (3) and, when expanded, draw the flanks of the splines against one another in working contact during a braking operation.

Abstract: A shock-absorbing torsionally elastic power transmitting device is described having resilient cushioning means loaded with modulus-increasing fibrous reinforcement, adapted to be interposed between mating lugs of a hub and rim configured to accommodate high torque levels simultaneously with relatively large angular deflections. The fibrous reinforcement is preferably aligned in the principal direction of displacement of the cushions under load. In another aspect, a torsionally elastic power transmitting device is used with V- or V-ribbed belt friction drive sheaves subject to slippage, to absorb torsional shocks and minimize heat build-up.