Abstract: A planetary gearing arrangement has a compound planetary gear set and a simple planetary gear set. The planetary gear sets are continuously interconnected at the sun gear members and are interconnectable through the selective engagement of two proportioning clutches which change the interaction of the gear sets. A single member, a ring gear, is continuously connected to an output shaft. The arrangement also includes two input clutches and two brakes which in combination with the proportioning clutches permit the establishment of five forward ratios and one reverse ratio. Two of the forward ratios are underdrives and two of the ratios are overdrives. All of the forward ratio interchanges, the neutral to forward ratio change and the neutral to reverse ratio change are of the single transition type.

Abstract: A rotation transmission device mounted on a 4WD car can stop the front drive train during 2WD mode, and also permits smooth changeover from 2WD to 4WD even while the vehicle is moving. The rotation transmission device is mounted in a transfer which transmits the output of the engine transmission to the rear propeller shaft through an input shaft and to the front propeller shaft through a silent chain. The rotation transmission device includes a two-way clutch through which the rotation of the input shaft is selectively transmitted to a chain sprocket, an electromagnetic clutch for selectively locking and unlocking the two-way clutch, and a multiple disk clutch provided between the two-way clutch and the electromagnetic clutch to function as a synchronizer that permits smooth mode change from 2WD to 4WD even while the vehicle is moving.

Abstract: A multi-clutched transmission system which may be implemented in an automobile or other motor vehicle. A common drive shaft is generally coupled to a number of clutches comprising a number of inner drive portions and a number of outer portions. A number of gears may be provided that are in contact with a selected one of the clutches. A pressurized hydraulic input chamber may move within the system to engage one of the clutches with a particular gear. When a particular one of the clutches is engaged, a specific torque is generated at the output drive shaft.

Abstract: An arrangement for locking a selector mechanism can be moved by a manual selector element, into, among others, positions P and R and is usable for an automatically operating change-speed gearbox. A servomotor can be moved by auxiliary force into one end position, in which locking dogs for locking the manual selector element in the P-position are disengaged, and by spring force into its other end position, in which locking dogs for blocking the movement of the manual selector element into the R-position are disengaged.

Abstract: An operating device of a friction clutch arranged in the drive train of a motor vehicle, having a positioning servo arrangement with a pressure medium power cylinder arrangement located inside the housing bell and acting on a clutch release bearing arrangement. The invention that the pressure medium power cylinder arrangement, an input element arrangement associated with a control valve and, in some cases, additional anti-tilting moment devices are embodied and/or adjusted to each other and, in some cases, to the clutch so that the force resulting from the forces exercised by the pressure medium power cylinder arrangement, the input element arrangement and, in some cases, the additional anti-tilting moment devices directly or indirectly on the clutch release bearing arrangement or the clutch release bearing arrangement side of the pressure medium power cylinder arrangement, during at least one clutch operation phase, are at least substantially coaxial to the clutch axis.

Abstract: A self-adjusting wrap spring clutch has a spring overlying driving and driven arbors and in engagement with each. One end of the spring is loosely connected to a control collar, which surrounds the spring and at least a portion of each of the arbors, while its other end is connected to the driven arbor. The control collar is held against rotation by a spring biased pawl engaging one of a plurality of preferably equiangularly spaced teeth on its circumference. When a solenoid is energized, the pawl is withdrawn from the tooth on the control collar and the spring tightens on the driving arbor to transmit torque to the driven arbor from the driving arbor. The pawl rides on a cam surface on a gear hub, which rotates whenever the driven arbor rotates, until the pawl falls into an opening or low dwell in the cam surface so that the pawl can engage one of the teeth on the control collar.

Abstract: A threading clutch apparatus (10) for a multiple spindle machine which allows for selective engagement of connected gears with a rotating shaft (12) which is connected to the threading clutch apparatus. The threading clutch apparatus includes a hub (14) which is positively connected with and rotates with the shaft (12), and a housing (18) which is supported from the hub via bearings (28 and 30). The threading clutch apparatus further includes a pair of pistons (48 and 66) which are positioned to communicate with a compressed fluid source. The threading clutch apparatus further includes a first and second plurality of friction disks (92 and 122) which are operably connected with the gears of the multiple spindle machine. When compressed fluid is communicated to a piston, the piston compresses the associated plurality of the friction disks which results in the positive engagement of the associated gear and rotation of the gear with the shaft.

Abstract: There is provided an electromagnetic clutch which is capable of reducing a variation in torque (reaction force) from a refrigerant compressor. The electromagnetic clutch includes a hub rigidly fitted on a drive shaft, the hub having a flange portion, a rotor which rotates about the drive shaft, a magnetic coil arranged within the rotor, an armature plate which is attracted into abutment with the rotor when the magnetic coil is energized, and a plurality of spring members interposed between the flange portion of the hub and the armature plate along a circumference of the rotor, for connection between the flange portion of the hub and the armature plate.

Abstract: Disclosed is a continuously variable transmission. The continuously variable transmission includes a propulsion controller connected to an engine crankshaft; a forward/reverse controller mounted on an input shaft extending from the propulsion controller and which determines whether the vehicle is driven in forward or reverse modes; a low/high-speed selector connected to an output of the forward/reverse controller, for selecting a low-speed or a high-speed driving state; a continuously variable device connected to a first output of the low/high-speed selector; and a drive power synthesizer connected both an output of the continuously variable device, and to a second output of the low/high-speed selector.

Abstract: An automatic transmission for an automotive vehicle includes a continually variable drive mechanism having one sheave assembly fixed to an intermediate shaft and the input sheave assembly supported on an input shaft, a low speed gearset driveably connected to the input shaft and an output shaft, a fixed ratio drive mechanism in the form of a chain drive providing a torque delivery path between the intermediate shaft and the carrier of the gearset, a transfer clutch for connecting and releasing the first sheave of the variable drive mechanism and input shaft, a low brake, a reverse gearset, a reverse brake, and a clutch for selectively driveably connecting the output of the fixed drive mechanism and a front output shaft.

Abstract: A lockup damper of a torque converter 1 includes a retaining plate 14, a driven member 10, first coil springs 13A, second coil springs 13B and an intermediate plate 30. The first coil springs 13A are disposed between the retaining plate 14 and the driven plate 10. The second coil springs 13B are disposed between the retaining plate 14 and the first coil springs 13A. The intermediate plate 30 has spring support portions 32 disposed between the first and second coil springs 13A and 13B for circumferentially supporting the first and second coil springs 13A and 13B, and engagement portions 33a, 33b, 34a and 34b engageable with the retaining plate 14 or the driven member 10.

Abstract: A hydraulic control apparatus for a lock-up clutch assembled within a torque converter, the lock-up clutch having an engagement-side fluid passage supplied with fluid under line pressure for engagement thereof to establish a direct connection between input and output elements of the torque converter and a release-side fluid passage supplied with the fluid under line pressure for disengagement thereof to release the direct connection between the input and output elements of torque converter.

Abstract: A clutch release assembly for use in a motor vehicle includes a retainer sleeve, a retainer, a release bearing and an input shaft sleeve. The retainer has an axis of rotation, and has both a first end and a second end. The retainer is disposed on the first end of the retainer sleeve. The retainer is adapted to engage a radially inwardly directed end of one of a lever and a diaphragm spring finger. The release bearing is disposed on the second end of the retainer sleeve. The input shaft sleeve is disposed radially within the retainer sleeve and has a first end and a second end. The input shaft sleeve is radially sized to slidably fit both within the retainer sleeve and over an input shaft. The input shaft sleeve has a radially inwardly extending anti-rotation feature, and a radially outwardly extending travel limit. The input shaft sleeve has a smooth low friction surface disposed toward the retainer sleeve. The input shaft sleeve protects the retainer sleeve from the input shaft.

Abstract: For testing the operation of the braking system of vehicles, in particular heavy trucks having an automatic multi-ratio mechanical transmission, an estimate for the total weight of the vehicle is formed on the basis of the vehicle's own parameters and driving parameters. If account is taken for the braking force or the acceleration in this calculation, in case of considerable deviations of the calculated vehicle weight from a threshold value, it can be concluded that a defect exists in the braking system of the vehicle. In this case, an alarm signal is given to the driver of the vehicle and/or directly geared to the operation of the mechanical transmission.

Abstract: Successive roll stands in a rolling mill are driven at selectively different drive speed ratios by a transmission system having a pair of drive shafts and a least one idler shaft journalled for rotation about parallel axes. First and second gear trains each include intermeshed drive gears freely rotatable on the drive shafts, and a pair of idler gears on the idler shaft; each being in meshed engagement with at least one of the drive gears of each drive train. Clutches operated to selectively couple the drive gears of the first and second drive trains with their respective drive shafts.

Abstract: A clutch engagement control has a flow regulating valve to control the engagement timing of the clutch. The regulating valve responds to a flow signal to reduce the fluid flow rate through the valve after the clutch apply piston has taken up the clutch free running clearance. The regulating valve has a control area communicating with a venturi between the regulating valve and the apply piston such that a flow rate signal is present at the control area.

Abstract: An automatic transmission for an automotive vehicle includes a continually variable drive mechanism having one sheave assembly supported on an input shaft and the output sheave assembly fixed to an intermediate shaft, a planetary gearset driveably connected to the input shaft and a layshaft gearset, a fixed ratio drive mechanism in the form of a chain drive providing a torque delivery path between the intermediate shaft and the output shaft, a transfer clutch for connecting and releasing the first sheave of the variable drive mechanism and input shaft, a low brake, and first and second reverse clutches for connecting and releasing alternately the input shaft, output shaft and output shaft, and a clutch for selectively driveably connecting the output of the second fixed drive mechanism and a front output shaft.