Abstract: A vehicle includes a rotatably mounted sensor designed to produce an image of an environment of the vehicle, a control device designed to process data obtained from the sensor, and a ventilation device that is designed for cooling the control device by a rotatably mounted impeller. An axis of rotation of the impeller is oriented orthogonally to a direction of movement of the vehicle and the ventilation device and the sensor are rotationally coupled in such a way that the impeller rotates the sensor around the axis of rotation.

Abstract: A torsional vibration damping arrangement for a drivetrain of a vehicle comprises a rotational mass arrangement which is rotatable around a rotational axis A and a damping arrangement fixed with respect to rotation relative to the rotational axis A. A displacer unit is operatively connected to the primary inertia element on the one side and to the secondary inertia element on the other side. The damping arrangement includes a slave cylinder with a working chamber having a volume V2, and the working chamber of the slave cylinder is operatively connected to the working chamber of the displacer unit. The damping arrangement includes a stiffness arrangement and a damper mass, and the slave cylinder of the damping arrangement is operatively connected to the damper mass by a stiffness arrangement.

Abstract: A torsional vibration damping arrangement for a drivetrain of a vehicle, having a carrier arrangement which is rotatable around an axis of rotation, a deflection mass movable in circumferential direction relative to the carrier arrangement, carrier arrangement and the deflection mass are coupled to be rotatable relative to one another via restoring elements arranged in circumferential direction that extend from the deflection mass in direction of the carrier arrangement. A restoring element is deformable around a force application point which is movable in radial direction under centrifugal force and which is associated with the restoring element. The movable force application point is acted upon by a preloading force acting radially in direction of the axis of rotation by a preloading spring. A main axis of the preloading spring and a main axis of the restoring element do not extend coaxially.

Abstract: A centrifugal pendulum supportable for rotation about an axis of rotation, including a pendulum flange, a pendulum mass, and a cam guide. The pendulum mass includes a first pendulum mass part and a second pendulum mass part. The first and second pendulum mass parts are coupled to be jointly movable with the pendulum flange along a pendulum path to a limited extent. A locking device is provided, the locking device coupling the first pendulum mass part and the second pendulum mass part. The locking device is capable of locking the first pendulum mass part relative to the second pendulum mass part.

Abstract: A device for noise vibration reduction of an alternator's pulley includes a pulley part combined with a rotating shaft of the alternator and also has a pendulum damper adapter part inserted into the pulley. In particular, the pendulum damper adapter part includes a pendulum pamper part and rotate or reciprocate the pendulum damper part to generate a vibration having the same frequency as but an opposite phase to a vibration of the pulley part so as to reduce the vibration of the pulley part.

Abstract: A coupler for translating a rotational force, including first and second rotational elements. The first rotational element defines a first pocket. The second rotational element is in axial alignment therewith and defines a second pocket facing the first pocket. The first pocket and the second pocket define a dampening chamber therebetween that varies in volume based on the overlap thereof. A fluid is positioned in the dampening chamber. A portion of the fluid is dispelled from the dampening chamber when the first rotational element rotates relative to the second rotational element and decreases the volume of the dampening chamber.

Abstract: The invention relates to a power transmission system of the automotive vehicle. A drive shaft structure, comprising a drive shaft and a hydraulic overload protector, the drive shaft comprises a first shaft and a coaxial second shaft, the hydraulic overload protector comprises a mounting rack, a crank shaft and at least a pair of hydraulic cylinders, a communicating tube is provided between two cylinders of the pair of hydraulic cylinders, a bi-directional pressure valve is provided on the communicating tube, said crank shaft comprises a spindle and a connecting rod shaft, said spindle is connected with said mounting rack rotatably, said first shaft is fixed with said mounting rack, said second shaft is fixed with said spindle, said connecting rod shaft is connected with said mounting rack via said cylinders.

Abstract: A damped torsional coupling is utilized to couple a drive shaft to a work shaft while permitting some relative rotation due to torsional vibrations. The coupling includes a second coupler oriented to rotate with respect to a first coupler about an axis through a continuum of negative to positive torque orientations. The first coupler defines a fluted perimeter surface with a number of flutes, distributed with radial symmetry about the axis. The second coupler a number of pistons reciprocally received in respective barrels to define a variable volume chamber fluidly connected to a damping passage. A spring biases the pistons and barrels to extend toward a position in contact with one of the flutes. The contact end may be an edge of a roller that rolls on the fluted perimeter surface in one of the flutes responsive to torques transmitted between the couplers.

Abstract: A variable stiffness torsional coupling includes a plurality of piston and barrel combinations that each define a variable volume chamber fluidly connected to a pressure control device. An electronic controller is in control communication with the pressure control device and configured to execute a resonance avoidance algorithm to generate pressure control signals to change the rotational stiffness of the coupling.

Abstract: A damped torsional coupling is utilized to couple a drive shaft to a work shaft while permitting some relative rotation due to torsional vibrations. The coupling includes a second coupler oriented to rotate with respect to a first coupler about an axis through a continuum of negative to positive torque orientations. The first coupler defines a fluted perimeter surface with a number of flutes, distributed with radial symmetry about the axis. The second coupler a number of pistons reciprocally received in respective barrels to define a variable volume chamber fluidly connected to a damping passage. A spring biases the pistons and barrels to extend toward a position in contact with one of the flutes. The contact end may be an edge of a roller that rolls on the fluted perimeter surface in one of the flutes responsive to torques transmitted between the couplers.

Abstract: A camshaft adjuster (1) having a stator (3) and a rotor (5) located in the stator (3), having vanes (7) that are each located in a chamber (9) formed between the stator (3) and the rotor (5), each of the vanes (7) dividing its respective chamber (9) into two partial chambers, and pressurized oil being adapted to be supplied to each of the partial chambers and conducted out from each of the partial chambers via oil channels (21), so that through the pressurized oil a torque can be exerted on the rotor (5) by which the rotor (5) can be rotated, so that a camshaft adjustment can be set thereby. The rotor (5) is constructed from a metallic base frame (15) that has, axially adjacent, a casing (17) made of plastic in which at least one of the oil channels (21) is formed.

Abstract: A torsional vibration damper with a primary side and a secondary side, wherein rotation of the primary side relative to the secondary side causes displacement of hydraulic fluid from at least one displacement chamber and compression of pneumatic fluid in at least one compensating chamber. A first displacement chamber assembly includes a pair of axially opposed end walls bounding each displacement chamber in both axial directions and a circumferential wall bounding it in one radial direction, and a second displacement chamber assembly bounds it in the other radial direction. At least one circumferential recess provided in one of the first and second displacement chamber assemblies is engaged by at least one projection provided on the other of the first and second displacement chamber assemblies to limit the relative rotation.

Abstract: A torque transfer coupling includes a shaft and a first second set of hydraulic devices. Each hydraulic device of the first set of hydraulic devices has a first end operably connected to a first end of the shaft, wherein the hydraulic devices of the first set of hydraulic devices are disposed about an axis of the shaft. Each hydraulic device of the second set of hydraulic devices has a first end operably connected to a second end of the shaft, and wherein the hydraulic devices of the second set of hydraulic devices are disposed about the axis of the shaft. Each hydraulic device can include a piston and cylinder assembly wherein extension and retraction of each piston of each hydraulic device is generally tangential to a portion of a circle encircling the shaft.

Abstract: In one aspect, an apparatus for damping the torsional excitation of a drive shaft is provided. The apparatus includes: a member secured to one end of the drive shaft and extending along the drive shaft; and damping means secured to the other end of the drive shaft for damping vibration of the end of the member remote from the securing of the member to the one end of the drive shaft. A hydraulic circuit for damping the vibration of a component in a first dimension, the circuit including: a pair of hydraulic cylinders disposed so that the actions of the pistons of the cylinders oppose one another in the first dimension, the pistons communicating with the component; and a fluid flow path between the cylinders, vibration of the component in the first dimension causing fluid flow between the cylinders to damp the vibration.

Abstract: A torsional vibration damper includes a drive-side transmission element connected to a drive and a takeoff-side transmission element, which can deflect rotationally with respect to the drive-side element. A damping device is installed between the two transmission elements and transmits torque between the drive-side transmission element and the takeoff-side transmission element. The damping device has a gas spring system with a reservoir containing a gaseous medium. The reservoir of the gas spring system is connected to a pressure circuit which allows, at least when there is a change in the torque to be transmitted by the gas spring system, adjustment of pressure in the reservoir to adapt the characteristic of the gas spring system to a new torque.

Abstract: An overload safety coupling, especially for the main drivetrains on rolling stands, which bridges a toothed spindle section and a spindle section with a permanent seat. The coupling includes a rotating-and-sliding sleeve, which has internal toothing at one end to hold the spindle section in a way that allows axial displacement. At the other end, the sleeve holds an inner sleeve, which is permanently seated on the spindle section. A pressure sleeve and a pressure gap pretensioned with pressure fluid produce a nonrotatable connection between the rear sleeve-like extension and the inner sleeve, which frictional connection gives way in the event of an overload.

Abstract: A torsional vibration damper has a drive side transmission element connected to a drive; a takeoff side transmission element, which can be brought into working connection with a takeoff and which can rotate with respect to the drive side transmission element; and a damping device installed between the two transmission elements, the damping device being equipped with a spring system, which serves to transmit torque between the drive side and the takeoff side transmission element and has at least one reservoir space containing a gaseous medium. Each reservoir space of the spring system is in working connection with an assigned pressure space of a pressure circuit containing a fluid medium, where the pressure circuit can be used to adjust the pressure present in the pressure space when the torque to be transmitted by the spring system changes and thus to adapt the characteristic of the spring system to the new torque as needed.

Abstract: A torsional vibration damper with a primary side and a secondary side, wherein rotation of the primary side relative to the secondary side causes displacement of hydraulic fluid from at least one displacement chamber and compression of pneumatic fluid in at least one compensating chamber. A first displacement chamber assembly includes a pair of axially opposed end walls bounding each displacement chamber in both axial directions and a circumferential wall bounding it in one radial direction, and a second displacement chamber assembly bounds it in the other radial direction. At least one circumferential recess provided in one of the first and second displacement chamber assemblies is engaged by at least one projection provided on the other of the first and second displacement chamber assemblies to limit the relative rotation.

Abstract: A hydraulically actuated torque coupling device is provided for transmitting a drive torque from an input to at least one output. The torque coupling device comprises a rotatable hydraulic manifold block having a plurality of cylinder bores defined therein, a multi-lobed cam ring rotatable coaxially with the manifold block, a plurality of pistons each disposed within corresponding one of the plurality of cylinder bores in the manifold block for reciprocating therewithin upon relative rotational movement between the manifold block and the cam ring and defining a plurality of pressure chambers within the corresponding cylinder bores, and restrictor device in fluid communication with each of the plurality of pressure chambers such that the restrictor device controls a discharge pressure attainable within each of the plurality of pressure chambers during discharge strokes. Each of the plurality of pistons rotably engages the at least one cam ring at distal ends thereof.

Abstract: A torsional coupling includes a body having a circumference and defining a center axis. The body is rotatable about the center axis. The coupling also includes a ring including an inner diameter disposed about the circumference. The ring includes a ring contact surface having a first radius and the ring is configured to rotate about the center axis. A coupling element is associated with the body and is configured to apply a centrifugal force radially outwardly from the circumference of the body when the body rotates. The coupling element includes a coupling element contact surface having a second radius which is different than the first radius of the ring contact surface. The coupling element contact surface is in contact with the ring contact surface and is configured to apply a force against the ring contact surface to rotate the ring relative to the body and increase the effective stiffness of the torsional coupling as the rotational speed of the body increases.

Abstract: A torsional vibration damping apparatus which operates between the crankshaft of the engine and the input shaft of the transmission in a motor vehicle has two flywheels which are rotatable relative to each other against the opposition of one or more dampers installed in a fluid-containing chamber of the flywheel which is connected to the crankshaft. The chamber has one or two annular compartments for the coil springs of the damper or dampers, and such coil springs are caused to store energy by a flange which is connected to the flywheel that drives the input shaft of the transmission and by integral or separately produced stops-of the flywheel which is connected with the crankshaft. The flange cooperates with the respective flywheel to form a flow restrictor which opposes the flow of fluid from and into the compartment or compartments of the chamber in response to expansion or contraction of the coil springs.

Abstract: A limiter plug and a drain plug are juxtaposed in a valve block. The limiter plug is provided with a thermo-switch of which operation, when a predetermined temperature is reached, opens a communication passage for drainage by means of a limiter pin. The drain plug is provided with a drain pin for draining a high-pressure oil in conjunction with the drainage action of the limit pin induced by the thermo-switch so that, when the predetermined temperature is reached, it substantially nullifies the torque for switching from 4 wheel-drive to 2 wheel-drive. In the status of no operation of the thermo-switch, the drain pin when a predetermined torque is reached, gradually opens the drain hole while catching a balance, to limit the torque to a predetermined value.

Abstract: A valve block coupled to a rotor is provided with a drain mechanism that includes a drain pin adapted to open and close a drain hole. The drain pin is incorporated in a drain plug by providing a support by a return spring. The drain pin has an orifice for generating a flow resistance. One end turn portion of the return spring is press fitted into the interior of the drain pin having the orifice, while the other end turn portion of the return spring is press fitted into the interior of a limiter plug having a limiter pin, whereby the drain pin is rotationally positioned to alleviate cavitation noises.

Abstract: A torque varying mechanism comprises an accommodation hole that has a relief hole formed in its bottom and that receives a check ball therein. The accommodation hole is configured so as to present a relationship in which the area of flow passage between the accommodation hole and the check ball increases linearly as a function of the amount of displacement of the check ball after opening of the relief hole, after which the flow passage area keeps a unvarying value. A hysteresis characteristic is imposed on a switching point where switching is made between a high torque transmission characteristic and a low torque transmission characteristic relative to an increase and a decrease of the vehicle velocity.

Abstract: A joint includes therein a valve serving to cut off torque transmitted from a front wheel associated driving shaft to a rear wheel associated driven shaft by the action of a weight based on a centrifugal force when a predetermined number of rotations is reached. The valve is coupled to a rotor or a housing connected to the driven shaft so that the rotations of the valves are in synchronism with rotations of the driven shaft. For this reason, the number of rotations of the valve is determined by the number of rotations of the rear wheel associated with the driven shaft, allowing the torque to be cut off depending on the vehicle velocity.

Abstract: A torque characteristic shifting mechanism is provided in an accommodation hole of a rotary valve. The torque characteristic shifting mechanism changes over the torque characteristics in a multi-step manner with an increase of the vehicle velocity by setting the distances so as to meet the relationships R3≈R2>R1 or R2>R3>R1 where R1, R2 and R3 are the distance from a center of rotation of a weight member accommodated rockably around the center of rotation to a center of the ball blocking the drain hole, the distance from the center of rotation to a center of gravity of the weight member and the distance from the center of rotation to a center of a spring, respectively.

Abstract: A plunger is accommodated in each of a plurality of plunger chambers formed axially in a rotor, with the plunger being displaced by rotation of a cam face associated with a housing. A first one way valve for intake is incorporated in the head of each plunger and a second one way valve for discharge is disposed within in a discharge hole leading to the plunger chambers. The intake stroke of the plunger caused by rotation of the cam opens the first one way valve to suck oil from a low pressure chamber into the plunger chamber. The discharge stroke of the plunger opens the second one way valve to allow the discharged oil to flow through the orifice into the low pressure chamber, whereby a torque corresponding to the relative rotational-speed difference is transmitted from the housing side to the rotor side.

Abstract: A clutch for a two-mass flywheel of an internal combustion engine includes a first half-coupling and a second-half coupling. Both half-couplings are, within the bounds provided, torsionally twistable relative to the other. The half-couplings are connected to each other through elastic clutch elements. Side-disks form an inner, leakproof compartment containing a center disk. In the radially outer regions of the compartment resides at least one displacement chamber that is capable of being filled and which has a throttle orifice. The displacement chamber is bound circumferentially by two first tappets which are part of one half-coupling, as well as by a second tappet which is part of the other half-coupling. The second tappet divides the displacement chamber into two sectional chambers. At least one of the tappets includes a stationary tappet piece and a movable tappet piece which is movable in circumferential direction and delimits the respective partial chamber.

Abstract: A clutch having a primary part and a secondary part for coupling together two coaxial rotating shafts including a driven shaft. The second part includes a driving disk, a trailing disk and tangential spring bodies forming a non-positive, engaging relationship between the driving disk and the trailing disk. At least one tangential spring body is a clamping body which is disposed within the second recess and abuts the radial edges of the first recess. The clamping body includes a cylinder, a piston slidably disposed within the cylinder to form a closed cylinder space. A cylindrical body made of an elastic material is disposed within the cylinder space. The cylindrical body completely occupies the cylinder space under initial axial compression of the piston whereby the cylindrical body absorbs further axial forces as an incompressible medium.

Abstract: A multi-dirctional swivel joint for carrying loading members comprises a crosswise main body having a pair of first and a pair of second hollow cylinder members perpendicular to one another each having connected with a stepped neck member at their free end and pivotally and intersectionally coupled with a pair of lug members so as to permit the main body swiveling alternatively therewithin in multi-directions. A piston member slidingly disposed into each of the hollow cylinder members for defining a pair of first and second cylinder chambers which respectively communicate with an ambient hydraulic compressor via a pair of the first and second conduits through the piston member therein, in addition to a retaining ring sleeved on the free end of the piston member and secured by nut. So that the coupling of the main body with the lug members can be tightened or released upon the alternative exertion of the hydraulic force from the ambient compressor.

Abstract: A torsion isolator assembly (30) for reducing driveline torsionals includes a vane damper (36) including improved valving (40d, 40e) for increasing the damping factor of the damper, improved spiral springs (32,34 or 80,82) for reducing spring stress primarily due to centrifugal forces, and cam surfaces (44d,44c) for further reducing spring stress due to centrifugal forces.

Abstract: A flywheel includes an input member secured to a drive shaft, an output member rotatably supported on the input member, and a plurality of dash pots for connecting the input and output members to each other. The dash pots serve to transmit torque from the drive shaft to the output member and to damp torsional vibration transmitted from a drive shaft to the input member.

Abstract: A power steering system for automobiles comprising a rotary, driver-operated valve which is adapted to control pressure distribution from a steering pump to power-assist fluid motors and to a set of transversely disposed fluid pressure reaction pistons and which responds to a reaction pressure to oppose steering valve motion whereby the relationship between pressure and torque developed by the steering system can be tailored to provide the optimum relationship between these variables so that a desired reduced steering torque is provided at low vehicle speeds and a greater steering torque is provided at high vehicle speeds.

Abstract: A torsion isolator assembly (30) for reducing driveline torsionals includes a vane damper (36) including improved valving (40d,40e) for increasing the damping factor of the damper, improved spiral springs (32,34 or 80,82) for reducing spring stress primarily due to centrifugal forces, and cam surfaces (44d,440c) for further reducing spring stress due to centrifugal forces.

Abstract: An electromagnetic actuator is provided at the outer periphery of and out of contact with a casing of a transmission joint for transmitting torque between two shafts. The electromagnetic actuator produces an electromagnetic field within the joint main body when an exciting current is supplied to a solenoid coil of the actuator. A movable magnetic ring is provided in the casing so as to be movable in the axial direction. The ring is moved in the axial direction by receiving an electromagnetic force induced by the field produced by the electromagnetic actuator. A relief valve connected to the ring is moved over an orifice of a pump, and a spring biasing the relief valve is compressed due to such movement, thereby establishing a relief pressure.

Abstract: A torsional isolator assembly for reducing driveline torsionals includes a vane damper (36) having valving (40d,40e or 161,163) and chamfers (200,201) on pistons (60 or 160). These chamfers (200,201) aid in forming a seal between a surface (42d or 142d) by creating a hydrodynamic film that biases the piston (60 or 160) toward the housing surface (42d or 142d).

Abstract: A torsion isolator assembly (30) for reducing driveline torsionals includes a vane damper (36) having valving (40d,40e) for regulating the damping factor of the damper, spiral springs (32,34 or 82,84), and cam surfaces (44d,44c) which engage the ends of the spiral springs (32,34 or 82,84).; The spiral springs (32,34 or 82,84) have a lesser radial spacing between the outer convolutions as compared to the radial spacing between the inner convolutions.

Abstract: An assembly (19) for damping torsionals in a vehicle driveline. Assembly (19) includes a spring assembly (20) and a vane damper assembly (22) disposed in parallel and immersed in automatic transmission fluid of a torque converter housing (24). The spring assembly (20) isolates driveline torsionals and the damper assembly (22) dissipates the torsionals. The damper assembly (22) includes first and second relatively rotatable housing members (66, 68) respectively connected to the spring assembly output (62b) and input (62a). Members (66, 68) are also frictionally interconnected by surfaces (68a, 74a). Housing members (66, 68) define chambers (78a, 78b) which vary inversely in volume in response to flexing of the spring assembly (20) by the driveline torsionals. The chambers are in communication with the fluid in the torque converter housing via restricted passages (86, 88). As the chambers vary in volume, energy from the torsionals is converted to fluid pressure in the chambers decreasing in volume.

Abstract: Torsion damping isolator assemblies (19 or 100 or 200) are disposed for damping torsionals in a vehicle driveline. The assemblies include spiral springs (62 or 202,204) and a vane damper assembly (22or 206) disposed in parallel and immersed in automatic transmission fluid of a torque converter housing (24). The damper assemblies include first and second relatively rotatable housing members (66,68 or 208,210). The housing first members are connected to radially inner ends of the springs, and the second members are connected to radially outer ends of the springs. The housing members define chambers which vary inversely in volume in response to flexing of the spring assemblies by driveline torsionals. The chambers communicate with the fluid in the torque converter housing via restricted passages (86,88 or 220f,220g). As the chambers vary in volume, energy from the torsionals is converted to fluid pressure in the chambers decreasing in volume.

Abstract: Torsion damping isolator assemblies (19 or 100 or 200) are disposed for damping torsionals in a vehicle driveline. The assemblies include spiral springs (62 or 202, 204) and a vane damper assembly (22 or 206) disposed in parallel and immersed in automatic transmission fluid of a torque converter housing (24). Damper assemblies (22 or 206) include first and second relatively rotatable housing members (66, 68 or 208, 210). Housing members (66 or 208) are connected to radially inner ends (62b or 202b, 204b) of the springs, and members (68 or 210) are connected to radially outer ends (62a or 202a, 204a) of the springs. The housing members define chambers which vary inversely in volume in response to flexing of the spring assemblies by driveline torsionals. The chambers communication with the fluid in the torque converter housing via restricted passages (86, 88 or 220f, 220g). As the chambers vary in volume, energy from the torsionals is converted to fluid pressure in the chambers decreasing in volume.

Abstract: Two rotary shafts for transmitting power are coupled so as to be relatively rotatable. When a rotational speed difference occurs between the two shafts, a torque corresponding to the rotational speed difference is hydraulically generated and is transmitted from the shaft of the higher rotational speed to the shaft of the lower rotational speed. A cam surface having two or more cam mountains is formed on the inside edge surface of the cam housing. A rotor is assembled in the cam housing so as to be relatively rotatable. The rotor faces the cam surface and is formed with a plurality of plunger chambers in the axial direction. Plungers are movably assembled in the plunger chamber through return springs. The plunger chambers are connected to the high pressure chamber through delivery passages having delivery valves.

Abstract: The existing couplings used for transmission of torque uses a combination of mechanical springs or a combination of dampening devices such as cylindrical openings having pistons spring-biased therein. The cylindrical openings also have viscous fluid introduced therein and dampen the torque applied thereto. A coupling apparatus is provided for resiliently transmitting torque including a pin assembly positioned in mechanical connection between an annular plate member and a gear member, dampening backlash motion including a pin assembly and a mechanism for biasing a piston into contact with one of the gear member or annular plate member, and lubricating the interface between the components having relative oscillation therebetween. An interface between the moving parts, the annular plate and the gear, is providing and a lubrication system is provided to lubricate the interface.

Abstract: A hydraulic reaction force apparatus of a power steering device includes an input shaft, an output shaft, the input and output shafts being connected with each other to be pivotal through a predetermined angle, reaction force arms connected integrally with the input shaft and projecting radially therefrom, a pair of output shaft guide holes sandwiching each reaction force arm and disposed to oppose each other in a direction perpendicular to the reaction force arms, reaction force plungers slidably disposed in the guide holes, and a reaction force mechanism for biasing the reaction force plungers against the reaction force arms by a reaction force applied to the reaction plungers and related to running conditions. Each reaction force plunger includes a metal cylindrical member having a hollow portion open at a side opposite to that of the reaction force arms and a damping member mounted in the cylindrical member.

Abstract: A dual-type damper device for damping vibration of a rotation axle, has a damper pulley including a boss portion joined to the rotation axle, a cylindrical portion located radially outwardly of the boss portion, and a connection portion connecting the boss portion and the cylindrical portion. A first damper-mass member is disposed radially outwardly of the cylindrical portion of the damper pulley, such that the first damper-mass member is spaced apart from, and concentric with, the cylindrical portion. A first resilient member is interposed between the cylindrical portion of the damper pulley and the first damper-mass member. A second damper-mass member has a cylindrical shape and is disposed concentrically in an inner space of the cylindrical portion of the damper pulley.

Abstract: In a fly-wheel unit of any desired construction type including two separate fly-wheel members, the torsion springs are housed in a liquid receiving chamber which is at least partially filled with a lubricant or with a coolant. In this way inherent noises and excess wear can be damped and heat generation can be uniformly distributed.

Abstract: A shaft coupling comprises two coupling members, which are connected or adapted to be connected to respective shafts. One of the two coupling members is provided on a coupling face with an even number of bores, which have a uniform angular spacing and are either parallel to the axis of rotation of the coupling or radial with respect to said axis. A piston is slidably mounted in each bore and has a coupling end face with is beveled or crowned. Hydraulic lines are provided for applying fluid pressure to each piston at its rear end. The other coupling member is provided on a coupling face with an annular series of alternating elevations and depressions, which also have a uniform angular spacing. By the application of hydraulic pressure to the rear end faces of the pistons, the coupling end faces of the pistons are urged against the elevations and depressions.

Abstract: The present invention discloses a damper disc comprising a spline hub; a radial flange formed at the hub; a case connected to facings; circumferentially spaced plural compressible coil springs connecting the case and the flange together; sealed spring chambers formed around the springs by the case or a cover; sealed narrow spaces connecting the spring chambers together; and spring seats disposed at both ends of the springs; said chambers and spaces being filled with oil, so that the oil applies a resistance force to the moving spring seats. At least one of side surfaces of a portion of the flange radially inside the springs may be provided with radially spaced annular protrusions, and the cases may be provided with annular protrusions engaging with the protrusions on the flange with narrow spaces therebetween.

Abstract: The invention discloses a damper disc comprising a spline hub; a radial flange formed at the hub; a sealed case covering the flange and having a radially outer portion to which a torque is transmitted; torsion springs disposed in openings in the flange and axially faced hollows in the case for connecting the flange and the case together; and a piston cylinder mechanism arranged in the case and having a piston operable to move in accordance with relative torsion between the case and the flange, the case and a cylinder of the piston cylinder mechanism being filled with operating oil, and the cylinder being provided with a narrow space through which the oil can be discharged.

Abstract: A hydraulic dampened clutch plate having a hub, a hub flange, a friction disc plate and pins on the hub flange and disc plate spaced radially outwardly from the hub and spaced equally circumferentially around the hub, the pins on the flange and disc plate being joined by a cylinder and piston, the cylinder being fluid tight and the piston having a valve there in, divides the cylinder into two chambers, the piston valve interconnecting the chambers to dampening vibration or the piston moves in and out of the cylinder because of relative movement between the hub flange and the disc plate.

Abstract: A fluid power transmission adapted for combination with an engine to drive auxiliary equipment thereto including a rotor arrangement for direct driving connection to the engine crankshaft and a housing assembly rotatably supported on the rotor arrangement and forming therewith a fluid drive circuit to be in driven relation therewith. A centrifugally-actuated valve is radially disposed in the fluid circuit in the housing assembly to remain closed at rotational speeds of the housing assembly less than a predetermined optimum speed and to yield in response to centrifugal forces created upon rotation of the housing assembly at greater speeds for fluid flow in the fluid circuit to create slippage of the housing assembly about the rotor arrangement to limit increases in the rotational speed of the housing assembly over the optimum speed. The housing assembly includes a pulley wheel by which the auxiliary units are driven generally constantly at the optimum speed for maximum efficiency.