Abstract: A bicycle transmission has drive pedals connected through a pedal shaft disposed in a pedal shaft hub on a bicycle frame. The shaft is selectively engageable with a series of gear pawls which are positioned to selectively engage one of a series of gears disposed about the pedal shaft. The gears are selectively engaged with an output sprocket meshed to a rear wheel sprocket. The pedal shaft includes a series of angled slots therein, in which a cam follower pin is disposed. The cam follower includes an actuator arm to cause one of the gears to engage the pedal shaft. The slots are sized so that reverse pedal rotation will cause the cam follower to axially actuate about the pedal shaft to cause disengagement and engagment of the gears.

Abstract: A power transmitting system for transmitting power between a power source, such as an internal combustion engine or an electric motor or the like, and a driven device, such as a vehicle wheel or the like, comprising an endless power transmitting device, such as a chain or a belt, and a plurality of pulley devices including at least one variable diameter pulley with clamping devices associated with the variable diameter pulley and the endless power transmitting device to clamp them together during movement of the endless power transmitting device around the variable diameter pulley.

Abstract: A gear shift device for motor vehicles in which a fluid pressure production unit is arranged between a gear shift mechanism and a damper device and is connected directly with a drive input member. In the damper device for the gear shift device, the gear shift mechanism is connected through a first output member to the drive input member. The fluid pressure production unit is simultaneously connected to the input member through a second output member. Therefore, the torsional rigidity of the damper device can be set small enough to restrain the neutral noise associated with gear shift devices.

Abstract: An orifice is installed on an oil passage to a hydraulic servo for a direct clutch. In forward high speed running, a line pressure from the D range port of a manual valve is supplied to the hydraulic servo through an oil passage used for forward high speed running and a three way cock (non manual type). Then comparatively large amount of oil is supplied to the servo in accordance with the high speed running. In reverse running, the line pressure from the R range port of the manual valve is supplied to the servo through the orifice and the three way cock. Consequently, comparatively small amount of oil is supplied to the hydraulic servo.

Abstract: A continuously variable transmission unit includes a disc drivingly connected to a first shaft, the disc having a frusto-conical groove in its outer periphery, the walls of the groove being inclined inwardly towards one another; an annular element is mounted for rotation about the disc, so that the inner periphery of the annular element is located within the groove, opposite faces of the annular element engaging the opposed walls of the groove. A connection is provided for transmitting rotation of the annular element to an output shaft and the annular element is mounted for rotation on a carrier, the carrier being adjustable radially of the disc to alter the eccentricity of the annular element with respect to the disc and to change the drive ratio of the transmission. The transmission unit may drive suitable gear trains to extend the range of drive ratios thereof. Positive drive elements may be included between the disc and annular element.

Abstract: A method and apparatus is disclosed for arranging gears of a helical gear transmission in order to reduce the degree of thrust and, thereby, the wear occurring between those gears of such transmission and the clutch associated therewith for selectably connecting the associated gear for rotation on the gear shaft.

Abstract: An HST housing axle driving apparatus for a small-sized running vehicle, such as a tractor, in which an axle casing is divided into a left-side half axle casing and a right-side half axle casing. In one of the left- and right-side half axle casings are disposed a hydraulic pump provided with a vertical pump shaft and a hydraulic motor provided with a horizontal motor shaft. In the other of the left- and right-side half axle casings are disposed a speed reduction shaft and a differential gear unit, so that a driving force is adapted to be transmitted from the vertical pump shaft to the horizontal motor shaft.

Abstract: A transmission is equipped with a planetary gear type transmission unit disposed between an input member and an output member within a casing. The transmission unit is comprised of a sun gear, a ring gear and a plurality of planet gears carried by a carrier coupled with the output member. The planet gears are in mesh with the sun gear and the ring gear. The input and output members are coupled with each other by bypassing the gears of the transmission unit in direct drive or via these gears in reduction ratio drive. The transmission is further provided with a first change-over member in mesh with the input member for selectively connecting the input member with the carrier in direct drive or with the sun gear in reduction ratio drive and a second change-over member secured to the first change-over member for engaging the ring gear with the casing in reduction ratio drive or disengaging the former from the latter in direct drive.

Abstract: A single shaft (106) shifting mechanism (100) for a change gear transmission (10) is provided. The shifting mechanism includes in-gear/neutral detent device (194, 196, 198) and stop and positioning devices (200, 202, 204,206) all of which are integral with the mechanism allowing a relatively simple block mechanism (102) to be utilized with standard remote and/or direct shift actuators.

Abstract: A transmission apparatus has an epicyclic gear unit and a torque converter. One element of the epicyclic gear unit is connected to one element of the torque converter, and another element of the epicyclic gear is connected to another element of the torque converter. The third element of the epicyclic gear unit is connected to a first shaft. A second shaft is connected to one other element of the transmission apparatus. In a preferred embodiment, a variable ratio is provided between the two shafts, with the torque converter regulating this ratio.

Abstract: A hydraulic pressure control device for an automatic transmission for a vehicle, including a first, a second and a third hydraulic pressure control valve, wherein the third hydraulic pressure control valve cooperates with the first hydraulic pressure control valve to control switching over of a certain operation of the automatic transmission such as engagement and disengagement of a torque converter lock-up clutch during forward traveling of the vehicle, and also cooperates with the second hydraulic pressure control valve to selectively prevent setting up of the reverse stage when a manual shift valve is set to the reverse range while the vehicle is traveling forward.

Abstract: A throttle valve system for an automatic transmission control circuit comprising a solenoid pilot valve and a pressure regulating throttle pressure spool valve for developing a throttle valve pressure for use in initiating control functions in a multiple ratio transmission wherein the output signal of the throttle valve can be used as an indicator of the driving torque wherein the force requirements of the variable force solenoid are reduced and wherein the sensitivity of the pressure regulating throttle valve to the output signal of the pilot valve and to changes in engine torque is improved relative to prior art throttle valve systems, the pilot valve being effective to control a larger flow insensitive regulating valve and the stroke of the solenoid actuator for the pilot valve being minimal.

Abstract: A transmission, in particular for a motor vehicle, provided with an input shaft which, through a drive-away clutch, drives the primary shaft of an infinitely variable V-belt transmission.The secondary shaft of said V-belt transmission is connected with the output shaft of the transmission, whereby the input shaft and the primary shaft are disposed mutually in parallel but not coaxially, and that the primary shaft is driven by the input shaft through a reduction gear.

Abstract: A planetary speed reducer includes a drive roller having a drive surface, a stator having a concentric drive surface, the respective drive surfaces defining an annular space therebetween. A plurality of rotatable planet rollers have peripheral portion in frictional driving connection with the said drive surfaces of the roller and stator. An output shaft is connected to an assembly which carries the planet rollers.

Abstract: A fluid coupling transmission is adapted for interposition between the engine and the propulsion unit of a marine drive. The fluid coupling transmission provides variable speed operation in both forward and reverse. A fluid pump is drivingly connected to the engine crankshaft, and is adapted to drive a forward turbine and a reverse turbine. The reverse turbine is disposed between the fluid pump and the forward turbine, and includes a series of variable position vanes for providing variable power output from the transmission. A one way clutch is positioned between the forward turbine and an output shaft of the transmission, and a planetary gearset is disposed between the reverse turbine and the output shaft. A carrier member extends concentrically relative to the output shaft along a portion of its length, and the planet gears of the planetary gearset are pivotably mounted to the carrier member.

Abstract: A stepless speed change apparatus includes first and second parallel shafts, each carrying a plurality of discs disposed in succession along the shaft, the discs on the first shaft have progressively increasing diameters along one axial direction and the discs on the second shaft have progressively decreasing diameters in that direction, an intermediate shaft is disposed at an angle to a plane containing the axes of the first and second shafts, the intermediate shaft carries intermediate discs each of which is aligned radially with one of the discs on the first shaft and one of the discs on the second shaft, the intermediate shaft can be shifted in a direction perpendicular to the plane containing the axes of the first and second shafts so that as the intermediate shaft is moved the intermediate discs are, in turn, brought into engagement with respective pairs of discs on the first and second shafts at peripheral portions of the discs.

Abstract: A limited slip viscous differential in which the housing therefor is gearingly connected with the drive axle and rotates therewith. Each of two output axles from the limited slip viscous differential is connected internally to a viscous coupling for transferring torque from the drive axle to at least one of the two output axles when at least one of the two output axles is rotating an angular velocity different from that of the housing. A structure is provided for releasably retaining each of the output axles within the housing.

Abstract: A transmission has a torque converter with an impeller, primary and secondary turbines and a stator. In a first planetary gear set the carrier is connected to the primary turbine, the sun gear is connected to the secondary turbine and the ring gear is connected to a one-way clutch. A second planetary gear set has a second carrier connected to the output shaft and a second ring gear connected to the first carrier. A brake is connected to the one-way clutch and to the second sun gear for low forward operation. The one-way clutch is used in the first phase of low forward and in reverse. A clutch locks up the second planetary gear set in drive operation. The one-way clutch is centrifically disabled before and during drive operation.

Abstract: Automatic transmission including a main-transmission-mechanism consisting of two planetary gear units (three speed or four speed transmission mechanism for example) and a sub-transmission-mechanism consisting of one planetary gear unit (underdrive mechanism, for example). One speed and two speed for the whole transmission are obtained, with a low speed stage of the main-transmission-mechanism lower than two speed, by shifting the main-transmission-mechanism to one and two speed, respectively, while the sub-transmission-mechanism is kept at low speed (underdrive). And three speed for the whole transmission is obtained by shifting the sub-transmission-mechanism to high speed (direct coupling) while the main-transmission-mechanism is left at the two speed state. Further, four speed or five speed for the whole is obtained by shifting the main-transmission-mechanism to three speed or, if it is of four speed type, to four speed, respectively, while the sub-transmission-mechanism is kept at the high speed state.

Abstract: A planetary gear type speed change device having two simple planetary gear mechanisms positioned axially adjacent with one another with each carrier thereof being connected with each ring gear of the other, three clutches and three brakes assembled together between an input rotational member and an output rotational member so as to provide six monotonously changing gear ratios between the input and the output rotational members according to combinations of engagement and disengagement of the three clutches and the three brakes.