Abstract: A torsional vibration damper is provided with a drive-side transmission element which engages with a driven-side transmission element via a planetary gear set. The planetary gear set includes a planet wheel mounted on a planet carrier. The planet wheel engages another element of the planetary gear set such as a ring gear. The planet wheel has a toothing at its outer circumference which engages a toothing of the ring gear. The toothing of at least one of the planet wheel and the ring gear is made from a material which obviates the requirement of lubricating the toothing engagement between the planet wheel and the ring gear.

Abstract: A working oil receiving chamber 8 is provided with an expanding and contracting member 12. The expanding and contracting member 12 is comprised of an expansible and contractible bellows 2a made of metal, and a bottom portion 12b made of metal and for closing opposite open ends of the bellows portion 12a, so that the member 12 can expand as the pressure of the working oil in the working oil receiving chamber 8 is increased and can contract as the pressure is decreased. A slightly compressed gas is filled in the expanding and contracting member 12.

Abstract: A hydraulic transmission system includes the use of a geared cone 12 having geared rings 46-52 which mesh with respective clutches 30-36 of a drive shaft 16. The clutches 30-36 individually engage by use of hydraulic pressure directed by an input chamber 102. Engagement is accomplished when an internal parted disc 62 separates as a result of hydraulic fluid pressure and engages upon an, otherwise free-wheeling, internal surface of the clutch's external dish 60. When engagement occurs, work is transferred from the input shaft 18, through the gear cone 12, to the dish 60, through the engaged disc 62 and to the drive shaft 16.

Abstract: A clutch for a compressor includes a pulley rotatably installed on a main body of the compressor to be coaxial with a rotary shaft of the compressor, a hub member fixed at the rotary shaft and having a flange through which a plurality of recesses are formed at its outer peripheral surface at intervals of a predetermined distance, elastic members, parts of which are received to the respective recesses to be supported, and other parts of which protrude from the recesses, an outer ring member for supporting the protruding parts of the elastic members, a stopper member for supporting the protruding parts of the elastic members together with the outer ring member to prevent the elastic members from moving, and a disk fixed on the outer ring member, for transmitting power by selectively being tightly coupled to or separated from a frictional surface of the pulley.

Abstract: A process is described for shifting a gear change transmission which has no synchronizing members. A defined rotational speed difference is adjusted at the gear clutches in the range of the synchronous rotational speed. Thereby engaging flanks of the clutch halves which are always situated opposite to one another in the same rotating direction come in contact during the shifting.

Abstract: The invention is directed to a plate clutch with improved heat removal characteristics. For this purpose, additional axial and radial aerating openings are arranged in the torque-transmitting teeth of the clutch housing.

Abstract: Clutch-release device comprising a centrally holed diaphragm 1 which has a central part cut, by means of slits 5 into fingers 4 that point radially inwards, a thrust rolling bearing 13 and an operating element 14 mounted on a part which is distinct from the one supporting the diaphragm and in at least axial contact with the rolling bearing 13. The latter comprises a rotating race 16, a radial portion 25 of which bears against the internal end of the fingers 4 of the diaphragm 1, a non-rotating race 17, a radial portion 21 of which is in contact with the operating element, and a row of rolling bodies 18. The rotating race 16, made of pressed sheet metal, on its radial portion 25 in contact with the diaphragm 1 comprises at least one axial deformation 26 which is obtained without removing material, and the edges of which are capable of interacting with the flanks of one finger 4 of the diaphragm 1, the deformation 26 being smaller in size than the thickness of a finger 4 of the diaphragm 1.

Abstract: A built-up camshaft with a shaft body, on which separately produced cams are fixed, is described. In order to achieve that the individual cams can be made with the greatest accuracy and also with concave circumferential areas or running surfaces, and at the same time the shaft body can be balanced in a manner which is optimal from the viewpoint of vibration, a shaft body is provided, which is produced by casting, forging or the like. Except for the cams, all functional elements, such as sprocket mountings, axial bearings and position transmitters, can be formed in one piece on the shaft body during its manufacture.

Abstract: A control system diverts cooling and/or lubricating fluid from a selected one of a plurality of fluid actuated clutches in a transmission in response to the transmission being in a selected gear ratio. A diverter valve is placed between a source of cooling and/or lubricating fluid and the selected one of the fluid actuated clutches and operative to divert fluid therefrom in response to the transmission being placed in the selected gear ratio. A sensor arrangement is operative to sense the transmission gear ratio and deliver a signal to condition the diverter valve.

Abstract: A device (10) is disclosed for intercepting the input of a system (23) of an internal combustion engine (12) normally provided to a solenoid valve (22) for actuating a fan clutch (20). A pressure switch (24) is provided in the pressure line between the solenoid valve (22) and the fan clutch (20). The input is received by terminals (27, 28) and is passed on to a transistor (53) which turns on and allows current flow to the solenoid valve (22) during a first period of time. If a second transistor (48) turns on because the pressure switch (24) remains open as a set point is not sensed in the pressure line and does not discharge a time delay circuit formed by a combination of a resistor (44) and a capacitor (46), then the voltage of the gate of the first transistor (53) is pulled down to turn the transistor (53) off and interrupt the current flow to the solenoid valve (22).

Abstract: A clutch disk with two structural component groups which are arranged so as to be swivelably movable and radially movable relative to another within a defined scope by the intermediary of a guide element which is constructed as a helical spring and which is arranged concentric to the hub and whose turns--considered in the axial direction--are inclined at least in the installed state.

Abstract: In an electromagnetic clutch, an annular exciting coil having a pair of connecting portions at its intermediate winding portion, a coil bobbin, having a first coil holding groove for holding the exciting coil, and a coil cover, having a second coil holding groove for holding the exciting coil projecting from the coil bobbin, are stored in a yoke to expose a storing portion formed on the coil cover and having a pair of through holes from which the connecting portions of the exciting coil are led out. A temperature fuse is stored in the storing portion and has a pair of lead wires. A pair of intermediate terminals are arranged to oppose each other through a predetermined distance, and have lead press-insertion grooves where the lead wires of the temperature fuse are to be press-inserted, and coil press-insertion grooves where the connecting portions of the exciting coil led out from the through holes are to be press-inserted. A terminal cover fixes the intermediate terminals.

Abstract: A clutch disk made of a C/C composite for a wet multi-plate clutch is comprised of a disk body, and a pair of friction layers integral with and on opposite sides of the disk body for sliding contact with clutch plates. A relationship of V.sub.2 >V.sub.1 is established between the porosity V.sub.1 of the disk body and the porosity V.sub.2 of the friction layer, and the porosity V.sub.2 of the friction layer 4 is set in a range of 20%.ltoreq.V.sub.2 .ltoreq.60%, which provides a clutch disk with sufficient strength and excellent sliding characteristics.

Abstract: In a toroidal type infinitely variable automatic transmission comprising an oil pump mounted on a transmission case, first and second toroidal transmission mechanisms disposed within the case and having input and output disks for transmitting a rotational force through a tiltable friction roller, a forward and backward change-over mechanism positioned between the transmission mechanism and the oil pump and disposed within the case, for changing over between forward and backward operations of the transmission mechanism through a planetary gear mechanism by manipulation of forward and backward clutches, and a supporting wall positioned between the forward and backward change-over mechanism and the transmission mechanism and disposed within the case, for receiving a thrust force exerted towards a transmission mechanism side by the planetary gear mechanism, an extension member is provided on a side portion of the oil pump to extend within the case towards a transmission mechanism side, and the supporting wall is

Abstract: A simple planetary gearset and four transfer gear pairs are combined to provide five forward speed ratios and two reverse speed ratios in a power transmission. Three selectively engageable clutches controlling three of the transfer gear pairs are engaged in combination with two selectively engageable friction devices controlling the simple planetary gearset to establish four of the forward speed ratios and the two reverse ratios. A fourth selectively engageable clutch, controlling the fourth transfer gear pair establishes a forward ratio numerically central of the aforementioned four forward ratios.

Abstract: A differential mechanism and output shaft connecting structure wherein an output shaft is tightly assembled to a side gear for preventing an oil seal for sealing a gap between a transmission housing and for preventing an output shaft from becoming damaged while the output shaft is being inserted into the side gear. The apparatus for connecting the differential mechanism and the output shaft includes a side gear of the differential mechanism, an output shaft designed to be splined to the side gear, and a connecting unit which serves to assemble the side gear and the output shaft by bringing one end of the output shaft into contact with the rotating shaft of a pinion gear when the output shaft is inserted into the side gear.

Abstract: An automatic transmissions for an automotive vehicle includes a variator of the traction drive type, the variator including two input discs, two output discs, and rollers driveably engaged with the discs and adapted to vary continuously the ratio of the speeds of the output discs and input discs. Each of two planetary gearsets includes a carrier driven by an engine and driveably connected to an input disc, a sun gear driven by an output disc, and a sun gear connected to one of two driveshafts, which drive the front and rear wheels, respectively, of a motor vehicle. Independent angular variation of the rollers causes the variator to drive the forward drive sun gear and rear drive sun gear at different, variable speeds.

Abstract: A viscous fluid clutch includes a rotor attached to an output from an engine, a stator attached to a fan assembly and a coil assembly having at least a portion attached to the stator. A first gap is defined between the rotor and the stator and a second gap is defined between the rotor and the coil assembly. The first and second gaps are filled with a magnetorheological (MR) fluid. The coil assembly creates a magnetic field in the first and second gaps to vary the viscosity of the MR fluid to produce a variable speed viscous fluid clutch.

Abstract: An oil seal member is compressed between a connecting pipe for supplying oil to an oil chamber of a hydraulic servo and the cylinder drum of the hydraulic servo. The cylinder drum has an interior oil chamber and turns through a predetermined angle upon operation of a frictional engagement element by the hydraulic servo. The end of the seal member pressed against the cylindrical drum surrounds an oil hole 73 formed in the cylindrical drum, and oil pressure is supplied to the oil chamber through an oil passage in which the seal member is mounted and through the oil hole. A recess is formed in the outer surface of the cylindrical drum around the oil hole and the end of the seal member is received in the recess. When the cylindrical member turns within the predetermined angular range, the end of the seal member is protected by the recess. As a result, the end of the seal member is not damaged and the integrity of the seal is protected.

Abstract: A hub clutch assembly mounted between an axle and a hub of a four-wheel drive vehicle and having a 2WD/4WD position indicator that is simple in structure. A slide ring is axially slidably mounted on the axle. The slide ring is biased by a spring to a position in which an external gear formed on the slide ring engages an internal gear of an outer ring to maintain 4WD position. A magnet fixed to a cover attracts the slide ring to a 2WD position and keeps it in the 2WD position. The drive mode is changed between the 2WD mode and the 4WD mode by supplying pressure fluid only for a limited time period set by timers. A pressure gauge is provided in a passage for pressure fluid to indicate whether the current drive mode is the 2WD mode or the 4WD mode.