Abstract: A vehicle drive train transfer case includes a differential with an input and two outputs, a normally disengaged electromagnetic first clutch, and a normally engaged second clutch adapted to be electromagnetically disengaged. When the first and second clutches are disengaged and engaged, respectively, torque is transmitted via the differential to the rear axle of the vehicle without torque being transmitted to the front axles so as to propel the vehicle in a two-wheel drive mode. When both clutches are engaged, the differential is locked so as to cause torque to be transmitted to both the front and rear axles and effect propelling of the vehicle in a conventional four-wheel drive mode. When the first and second clutches are engaged and disengaged, respectively, the differential is unlocked to enable torque to be transmitted to both the front and rear axles in an all-wheel drive mode.

Abstract: A vehicular automatic transmission (AT) hydraulic controller has an integrated valve. The integrated valve has a cylindrical cam shaft including convex and concave parts on the outer periphery thereof, and the integrated valve is connected to a motor for automatic control and a connecting part which is interlocked with an external gearshift operated by a driver. Hydraulic control of the integrated valve can be performed in two different ways, i.e., automatic control and manual control, and even if automatic control malfunctions due to an error, manual control can maintain the control of the AT and avoid any inconvenience. The structure of this integrated valve provides a high degree of design freedom and can implement a wide variety of AT functions. Accordingly, a light, compact and reliable AT equipped with both an automatic control mechanism and a manual control mechanism can be provided.

Abstract: A gear shift mechanism particularly suited for a drag racing car is disclosed that causes the gear shifts of a transmission to be sequenced upon the attainment of selectable predetermined conditions so that the drag racing car obtains its desired acceleration in an optimum manner. The gear shift mechanism comprises electrically or pneumatically operated cylinders that move the gear shift lever upon sensing optimum conditions related to the acceleration performance of the drag racing car. The cylinders are positioned on opposite sides of the gear shift lever and provide counter-forces during shifting through at least one gear and yet allow the gear shifting to preferably be accomplished in a single direction. The counter-acting cylinders eliminate overshooting of the gear shift lever during movement of the lever arm. Alternatively, manual input instead of predetermined conditions may be substituted into the gear shift mechanism.

Abstract: A control system/method for an automated transmission system including a splitter-type, semi-blocked mechanical transmission (12) is provided. The control provides a technique for sensing auxiliary section engagement faults or auxiliary section and main section engagement faults and for operation in a fault-tolerant mode upon sensing such faults. In one embodiment, auxiliary section (214) engagement faults are sensed when the main section (212) is confirmed as engaged in an appropriate ratio and the transmission is confirmed as engaged in a ratio (GR.sub.N) other than the target ratio (GR.sub.T). In another embodiment, engagement faults are sensed when one section is confirmed as properly engaged and the transmission does not achieve engagement in a target ratio after a preset period of time.

Abstract: An articulation used in automobile seats, comprising: a mobile flange having a mobile flange inner toothing; a double satellite; a fixed flange having a fixed flange inner toothing for cooperating with said double satellite, the toothings of which mesh on one side with the fixed flange inner toothing of the fixed flange, and on another side with the mobile flange inner toothing of the mobile flange; an eccentric acting on the double satellite; a driving axis of the eccentric provided with at least one snug, the eccentric being made of two discs angularly mobile with respect to one another, each disc having an arched window; and a resilient element, said discs being connected to one another by said resilient element housed in said arched windows, while a central portion of each of said discs is formed with at least one circular recess, extended by a hollow housing adapted for receiving one of said snugs, and wherein each disc is noncircular and housed inside a bore of the double satellite; the two discs, when

Abstract: Upon detection of execution of operation for stopping a vehicle during its running state and of a drop in an actual speed ratio below a predetermined value, the actual speed ratio being the actual ratio of the revolution speed of an output shaft to the revolution speed of a power source, a feedback amount is determined, setting the integral component of the difference between a target motor speed ratio and an actual motor speed ratio to zero. Based on the feedback amount thus determined, an operation amount for controlling the angle of a swash plate is computed. With this amount, the angle of the swash plate is controlled.

Abstract: A power transmission for a vehicle which operates on land and in water has an engine driven torque converter, a planetary gear arrangement and a pair of output members. The water or sea-drive is connected with one output member which is connected to the planetary gear arrangement through a selectively engageable clutch. The land-drive is connected with the other output which is connected with the torque converter through a selectively engageable clutch. The torque converter turbine is connected with a member of the planetary gear arrangement and is selectively connectible with the impeller through a selectively engageable bypass or torque converter clutch.

Abstract: A differential motion gear system that controls the output speed ratio by changing the revolving direction of the input shaft. Different embodiments produce different combinations of output direction and output speed ratio.

Abstract: A control method/system for controlling engine fueling during vehicle launch conditions for a vehicle equipped with an automated mechanical transmission system (10) including a fuel-controlled engine (14), a master friction clutch (16), a multiple-speed mechanical transmission (12) and a microprocessor-based control unit (44). During vehicle launch, if throttle position (THL) is less than a reference value (10-20% of maximum fueling), fueling is according to throttle position; otherwise, fueling is a calculated amount (F.sub.CALC) determined by the control unit as a function of throttle position, engine speed (ES) and/or the rate of change (dES/dt) thereof, clutch condition and/or time factors.

Abstract: A shift control system for an automatic transmission including frictional engagement elements to be applied by actuating a piston by an oil pressure. The shift control system comprises: a pressure regulating valve for regulating the oil pressure to be fed to the frictional engagement elements and for controlling the regulated pressure level; a shift detector for detecting a shift to be executed by feeding the oil pressure to the frictional engagement elements; a low-pressure standby unit for setting the regulated pressure level of the pressure regulator valve to such a value during a predetermined time period after the shift has been detected that the oil pressure to be fed to the frictional engagement elements moves only the piston; and a booster for controlling the regulated pressure level so that the oil pressure to be fed to the frictional engagement elements may gradually increase after lapse of the predetermined time period.

Abstract: An improved differential mechanism of the holdout ring type, characterized by the provision of a pair of annular thrust blocks engaged by sets of Belleville disc-spring washers which bias a pair of side gears axially outwardly apart against a pair of annular thrust washers, respectively, non-rotatably supported by the differential housing. By loading the side gears in the axial direction, the side gear radial freedom of movement is restricted, whereby the differential chatter and noise level during operation are significantly reduced.

Abstract: A shift control system is provided for an automatic transmission having, connected in series, a secondary shifting unit, capable of being shifted between a high speed stage and a low speed stage, and a primary shifting unit which provides plural speed stages including a reverse speed stage. The secondary shifting unit can be set to the high speed stage upon a shift into reverse. The shift control system is equipped with a reverse range detector for detecting a shift from neutral to reverse range, a vehicle stop detector for detecting that vehicle is stopped, and a high speed stage command device for setting the secondary shifting unit at the high speed stage when, subsequent to a shift of the primary shifting unit into reverse, the vehicle is determined by a signal from the vehicle stop detector to have substantially stopped.

Abstract: A method of converting a three-speed transmission to a two-speed transmission comprises the step of replacing a plurality of steel drive discs and a plurality of friction driven discs of a multiple disc clutch with a clutch bypass. Each of the replaced plurality of steel drive discs have teeth on an outer perimeter. Similarly, each of the replaced plurality of friction driven discs have teeth on an inner perimeter. The clutch bypass, which replaces these discs, has outer teeth on an outer perimeter which match the teeth of the plurality of steel drive discs, and has inner teeth on an inner perimeter which match the teeth of the plurality of friction driven discs. The transmission is convened from a three speed transmission to a two speed transmission by eliminating first speed, so that the transmission upshifts directly from neutral to second speed. First speed is eliminated by making the transmission operate in first speed as if it were in second speed.

Abstract: A rotary actuator for opening and closing a valve, damper or linkage for industrial application, the actuator including a housing having a motor mounted thereon for driving a speed reduction gear train to reduce the speed of the motor, the rotary motion of the output shaft of the speed reduction gearing to linear motion against the force of a biasing spring to convert the linear motion of the converting motion to rotary motion of the output shaft.

Abstract: A torque divider for distributing the engine torque in a determined torque dividing ratio includes a case which is driven and rotated by an engine and which has first and second supporting holes. In the torque divider first and second side gears are arranged side by side. The second side gear has a predetermined radius larger than that of the first side gear. First and second pinion gears are housed inside the first and second supporting holes, respectively. The first and second pinion gears, respectively, have first and second gear parts. The first gear parts of the first and second pinion gears are meshed with each other; the second gear part of the first pinion gear is meshed with the first side gear; and the second gear part of the second pinion gear is meshed with the second side gear.

Abstract: A variable ratio transmission for an engine. The transmission comprises a planetary gear system having a planet ring with a plurality of planet gears rotatably connected thereto. The planetary gear system also comprises an outer drum gear and an inner sun gear. There is also a mechanism for providing a variable force against the drum gear so that the sun gear is driven by the engine with a variable ratio. The planet ring acts as an input driven by the engine and the sun gear acts as an output, such as to wheels. It should be appreciated that the input, output and providing mechanism, against the remaining gear, can be interchanged in a variety of ways to achieve the intended result of a variable transmission. Preferably, the providing mechanism provides a continuous variable force against the drum gear so that the transmission can provide a continuous variable ratio output. Thus the transmission can have an infinite number of gears ratios.

Abstract: A driving power transfer apparatus for four-wheel drive automotive vehicles, has a primary output shaft for providing driving power for a rear propeller shaft and a secondary hollow output shaft for providing driving power for a front propeller shaft, and a drive power transfer, such as a fluid coupling, mounted on the secondary output shaft, for variably transmitting the driving power to the secondary output shaft from the primary output shaft. The secondary shaft is connected to a front propeller shaft via a splined sliding yoke.

Abstract: The invention relates to hydraulically engaged by means of two friction clutches (9 and 10). For that purpose, friction elements (outer and inner disks 13, 14 and 19, 20) are alternatively engaged and disengaged by the force exerted by plate springs (16, 22) or by hydraulic fluid. A mechanism associated with one of the friction clutches (9 or 10) prevents the full force of the spring from acting on the friction elements when the gear is shifted down from a higher to a lower step. An accumulator (30) is preferably used to influence the torque transmission during a downshift. An essential advantage of the disengaged arrangement consists in the smoothness of the shifting operation during downshifts, avoiding a particularly disagreeable hard shifting which is otherwise felt.

Abstract: An epicyclical system of miter, bevel, worm and spur gears, plus joining members that may be adapted to, or be embodied in, a wide variety of devices in the field of applied mechanics including, but not limited to: (a) absorption of energy from fluid streams, (b) timing and tracking mechanisms, (c) mechanical power transmission; (d) generation of uniform or intermittent sine wave velocities in a multitude of helicoid patterns.

Abstract: A hydraulic control unit for an automatic transmission having a plurality of power transmitting paths and a plurality of engaging clutches and/or brakes for selecting any one of the transmitting paths to set a gear position. The unit comprises a regulator valve for producing a line pressure, an operating pressure control valve for producing an operating pressure supplied to the engaging clutch or brake by regulating the line pressure from the regulator valve, and a line pressure switching valve for making the line pressure produced by the regulator valve low at a specified gear position when a target operating pressure set by the operating pressure control valve is lower than a specified value and making the line pressure high when the target operating pressure is higher than the specified value.