Abstract: Transmission gear change characteristic curves, relating speed and loading, are stored in a memory. The digitally stored data are processed in a data processing unit connected to a synchronization and logic unit which controls a gear change control stage, actually controlling the gear shifting. The data processing unit compares output speed of the transmission with the characteristic curves stored in the memory relating speed and loading, and optimum transmission gear range, while additionally considering load signals derived from the engine to which the transmission is connected. Preferably, the entire unit is synchronized by output pulses derived from the output speed of the transmission, with prohibited states and gear changes being provided for to prevent shifting if the actual speed exceeds or recedes below critical levels.

Abstract: The rotational speed and torque mechanical transducer comprises an outer rotor connected to the motor through a power input shaft; a transverse shaft rotatably mounted at the interior of the outer rotor, and presenting an inner rotor secured thereon; a second shaft rotatably mounted in the inner rotor at right angles with respect to the axis of said inner rotor, and carrying secured thereon a central rotor; an intermediate rotor rotatably mounted around the axis of the inner rotor, and connected through a gear transmission with the shaft of the central rotor, and through another gear transmission with a main output shaft, while the shaft of the inner rotor is connected through a gear transmission with an auxiliary output shaft.

Abstract: A power transmission having three distinct ranges: (1) hydrostatic, (2) simple power-split hydromechanical, and (3) compound power-split hydromechanical. A single compound planetary assembly has two sun gears, two ring gears, and a single carrier with two sets of elongated planet gears. The two sun gears may be identical in size, and the two ring gears may be identical in size. A speed-varying module in driving relationship to the first sun gear is clutchable, in turn, to (1) the input shaft and (2) the second sun gear. The speed-varying means may comprise a pair of hydraulic units hydraulically interconnected so that one serves as a pump while the other serves as a motor and vice versa, one of the units having a variable stroke and being the one clutchable to either the input shaft or to the second sun gear. The other unit, which may have a fixed stroke, is connected in driving relation to the first sun gear.

Abstract: When the engine runs on all cylinders thereof, a diaphragm device for a hydraulic pressure regulating valve will operate in response to a pressure difference between the atmospheric pressure and intake vacuum within an intake manifold of the engine. A control system includes a solenoid valve which, when the engine runs on selected cylinders of all, will apply vacuum within a source of a predetermined vacuum to the diaphragm device. According to one preferred embodiment, the diaphragm device has a single chamber and the solenoid valve is adapted to selectively apply the induction vacuum and the predetermined vacuum to the single chamber. According to another preferred embodiment, the diaphragm device has a first chamber in communication with the intake manifold and a second chamber and the solenoid valve is adapted to selectively apply the atmospheric pressure and the predetermined vacuum to the second chamber.

Abstract: Fuel economy of a multi-cylinder internal combustion engine has been improved by allowing, when a vehicle is at a standstill, the engine to run on selected cylinders of all. The idling operation of the engine on the selected cylinders has been made smooth by the provision of a switch valve in a control circuit of the transmission. With the switch valve, as soon as an accelerator pedal is released when the vehicle is at a standstill, hydraulic fluid will be drained from the control circuit to render a gearing of the transmission in a neutral condition even if a manually selector valve in the control circuit is held in a drive range position. This prevents transmission of load to the engine through the hydrokinetic unit which otherwise would occur when the manually selector valve is in the drive range position.

Abstract: A speed reducing gear box of the type including, for each reducing stage, a plurality of planetary gears revolving about a central sun gear and inside an internal gear, the improvement of axially loading the planetary gears to provide sufficient friction to retard ballotting of said gears but not to substantially reduce power transmission of said gear box and to allow use of a tighter planetary gear mesh to decrease angular transmission errors.

Abstract: A variable diameter traction roller is connected in line with high torque transmitting gearing of the planetary type to control the over-all transmission drive ratio through an axially shiftable, driven traction roller. The driven traction roller is mounted on a pivotally displaceable bracket through which a tension device exerts a variable contact force and the pitch line angle between traction rollers is varied by a limited amount.

Abstract: A hydrostatic transmission has an input connected to a prime mover and an output connected through a speed-change transmission to a load. A control element of this transmission is urged in a direction tending to increase the transmission ratio by a control cylinder pressurized from a hydraulic tachometer operated by the transmission input, and is urged in the opposite direction to decrease the ratio by a regulating cylinder connected via a feed line to the hydraulic network interconnecting the pump and motor of the transmission. During speed change the two cylinders are depressurized and the regulating cylinder is isolated from the network.

Abstract: A drive assembly having a drive shaft rotatably carried in a support for rotation about an axis thereof. An output sprocket is carried on a first carrier of the drive assembly to be driven from the drive shaft by means of a gear assembly including a plurality of sun gears and planetary gears. The second of the planetary gears is rotatably mounted to the carrier. The first sun gear is locked against rotation relative to the drive shaft. The locking structure includes a carrier for carrying one set of the planetary gears and having locking structure cooperating with complementary locking structure on the second sun gear.

Abstract: In a differential gear mechanism housed in a case and having a power input and having two output shafts extending outwardly through the case for delivering drive torque to the two output shafts, each of said shafts driven by a helical side gear, said side gears axially aligned in contiguous relationship so that the end thrust of both of them is additive toward one output shaft, and a friction-reducing washer is provided surrounding said one of said output shafts in position to take end thrust between the traction gear associated with said shaft and the case, whereby to substantially equalize the torque delivered to the two output shafts; or one or more friction-increasing washers are provided surrounding one of said two output shafts in position to take end thrust between the differential and the case, whereby to decrease the torque delivered to said shaft when necessary to provide a predetermined control of torque, as from a transfer case.

Abstract: A control apparatus of a transfer mechanism includes a case member, an input axle, an intermediate axle arranged parallel with the input axle, an output axle on the rear wheel side arranged parallel with the input axle and the intermediate axle, an output axle on the front wheel side coaxially arranged with the output axle on the rear wheel side, an input gear mounted on the input axle, a fixing member secured to the case member, an intermediate gear mounted on the intermediate axle and engaged with the input gear, an output gear coaxially arranged with the output axle of the front wheel axle and engaged with the intermediate gear, a simple planetary gear set including a carrier integrally connected to the output gear, a ring gear integrally connected to the output axle of rear wheel side, and a sun gear selectively engaged with the output axle on the front wheel side or the fixing member or the output axle on the front wheel side and the output gear, the mechanism further including a tubular axle integrally

Abstract: A motion transmitting remote control assembly including a flexible conduit, a motion transmitting core element supported for axial movement within the conduit, antifriction members for engaging the core element for facilitating movement thereof, retainer members for retaining the antifriction members, and a race member disposed between the antifriction members and the conduit; the race member including a race portion engaging the antifriction members and resilient means for urging the race portion toward the antifriction members and the antifriction members toward the core element.

Abstract: A hydrostatic torque converter has a hydrostatic transmission and a stepped or gear transmission shiftable under load by selective actuation of respective clutches assigned to the gear trains. The variable-displacement pump is controlled hydrostatically to follow the switchover between clutches with the control pressure to the servocontrolling the displacement of the pump being regulated in response to the fluid pressures of the clutches through respective pressure modulation valves. As a consequence, the hydrostatic transmission compensates for the jump resulting from the shifting of the steps of the gear transmission and follows the stepping of the gear transmission outside the forced actuation of the transmission (positive switching overlap of the shifting clutches) in dependence upon the progress of load transfer from the released to the engaged clutch.

Abstract: The present invention relates to a device for controlling an automatic gearbox provided with a load correction valve subjected to the vacuum prevailing in the inlet manifold of the internal combustion engine associated therewith, wherein the pipe conveying the vacuum, which acts on the load correction valve, comprises a venting by-pass circuit controlled by a valve which allows venting when the engine is cold.

Abstract: A motion transmitting remote control assembly of the type for transmitting motion in a curved path by a flexible motion transmitting a core element movably supported by a guide such as a conduit. The assembly includes connection means for connecting either or both the conduit to a support structure and the core element to a control element. The connector means includes a snap-in connector for snap-in retention in an opening and is defined by a body for disposition on one side of the opening and a head for insertion through and retention in the opening. The head includes a first leg integral with and extending outwardly from the body to an outward end and a second leg extending generally inwardly from the outward end of the first leg to a distal end. The legs are spaced apart from one another whereby the second leg may be flexed or moved toward the first leg.

Abstract: A power operated wrench having a clutch means disposed to effect relative rotation between the drive means and the output spindle. The clutch means cooperates with the gear reduction system to allow the drive means to continue rotating thereby allowing repeated application of the maximum torque output of the drive means. The clutch means further effects a reduction of the system inertia which must be absorbed by a fastener after high speed run down and thereby prevents overtorque.

Abstract: Fourfold power branching for each propulsion mode (forward and reverse) requires recombining on a single output shaft which is carried out via two large gears mounted separately on axially spaced hollow shafts, one being traversed by the output shaft whose end is coupled centrally to the facing ends of the two hollow shafts by two gear couplings with crowned teeth.

Abstract: A mechanical throttle control mechanism is provided for the remote control of an internal combustion engine. The mechanism comprises a speed selector arm movable between first and second limit positions, a friction lock operably associated with the speed selector arm and an arrangement of links connecting the speed selector arm to the throttle lever of the engine. The links of the mechanism are so positioned to cause a decreasing moment arm on the speed selector arm as the speed selector arm is moved from its first position toward its second position which respectively corresponds to the shut-off and full-throttle positions of the throttle lever. This arrangement reduces the need experienced heretofore for high friction disc pressure to hold the speed selector arm in a desired position between its limit positions, resulting in less disc wear and less frequent friction spring adjustment.

Abstract: A gear transmission control device for a multiple-speed hub for a bicycle, in which an actuating arm is mounted to one end of a controller for the gear transmission of the hub, which arm is pivoted to a fixed member of the hub through a pivot and a control arm is pivoted to the pivot in the relation of being shiftable with respect to the actuating arm. An energy-storage spring is provided between both the arms, so that the control arm is shifted with respect to the actuating arm to energize the spring when the controller is subjected to a resistance in excess of a prescribed value. When the resistance is released the stored energy in the spring allows the actuating arm to swing, thereby changing the bicycle speed to a desirable speed-change stage.

Abstract: Six planets in a planetary gear are arranged in groups of two each wherein the planets of two groups are similarly spaced, the spacing of the two planets in the third group is larger but still smaller than the spacing from group to group. The radial lines of symmetry of the three groups are angularly spaced by 120.degree..