Abstract: A steering system for a tracked machine having dual power paths to opposed planetary differential gear sets for providing conventional differential steering and a second method of steering where the speed of one track is reduced while keeping the other track at its initial speed. The steering system includes primary and secondary drive inputs into the opposed planetary gear sets. The planetary gear sets combine the rotations from the primary and secondary drive inputs in a first steering mode for increasing the speed of one track while reducing the speed of the other track by an equal amount. A second mode of steering is also possible where the speed of one track is reduced while keeping the other track at its initial speed for larger turning radii. The primary drive input includes a variable displacement fluid pump and a variable displacement motor connected to the planetary gear sets by means of a drive shaft for driving the tracks of the machine.

Abstract: An arrangement for adjusting a seat of a vehicle has a plurality of adjusting elements arranged to adjust the position of the seat, a drive motor, and a distributing transmission provided within the drive motor and the adjusting elements and including a plurality of driven shafts having gears and connected with the adjusting elements, and at least one intermediate gear driven by the motor, wherein the distributing transmission includes a stepping transmission arranged so that, with a selectable step, the stepping transmission brings the intermediate gear into driving engagement with a gear of a respective one of the driven shafts, and the intermediate gear is fixed in this position without preventing its rotation about its axis.

Abstract: The gear drive is suitable for use in forging machines having a number of dies arranged around the workpiece.The gear drive consists of drive shafts (23), lay shafts (13) and driven shafts (10) which are located in a circle concentric with the axis of the forging machine and are interlinked by means of gears (6), (11) attached to shafts. The driven shafts (10) impart motion to the tools, i.e. to the dies of the machine.The driven shafts (10) with the gears (6) attached thereto are located in a circle of a relatively bigger diameter (D). The lay shafts (13) with the gears (11) attached thereto are located in a circle of a relatively smaller diameter (d). The circles of the bigger and smaller diameters (D, d) are concentric with the axis of the forging machine. The gears (6) of the driven shafts (10) are movably interlinked with the gears (11) of the lay shafts (13).The gears (6) and (11) of the driven shafts (10) and the lay shafts (13) are arranged in the same plane.

Abstract: A vehicle drive axle including a differential carrier and a differential driven by an input shaft. A pump housing is mounted to the forward end of the carrier in circumferentially enclosing relation to a portion of the input shaft and includes rotary fluid displacement means driven internally by the input shaft.

Abstract: The invention disclosed comprises twin clutch packs for a power shift transmission to provide two power paths through the power shift transmission and means for combining the drives in a single output drive.This invention relates to a power shift transmission and more particularly to a transmission having twin clutch packs for dividing the drive in separate power paths through the transmission and recombining in a single output drive. The transmission is a countershaft transmission having a common countershaft for the twin drives through the transmission which recombine as the drive is transmitted to the output shaft.With an increase in size and power transmitted through a power shift transmission a greater area of clutch plate surface or brake disc surface is required to transmit the increase in torque. Since the clutches are the greatest problem in transmitting increased power a doubling of the power transmitted through the transmission requires a redesign of the whole transmission.

Abstract: A torque transmitting system for transmitting torque from a drive shaft of an engine to an output shaft without transmitting torque variation comprises a friction clutch unit interposed between these shafts, a fluid pressure-operated actuating unit for engaging and disengaging the friction clutch unit, operating condition detectors detecting the operation condition of the engine, and a rotation speed difference detector for detecting the rotation speed difference between the drive shaft and the output shaft. In the system, means are provided for setting the rotation speed difference between the shafts on the basis of the output signals from the operating condition detectors and for controlling the pressure of actuating fluid supplied to the fluid pressure-operated actuating unit so that the detected rotation speed difference approaches the pre-set rotation speed difference, whereby the torque can be transmitted from the drive shaft to the output shaft without any substantial variation.

Abstract: Apparatus for controlling the transmission ratio of an infinitely variable motor vehicle transmission of the type including a belt and two pulleys each having conical discs which are hydraulically movable toward and away from each other, the apparatus including a hydraulic valve having an axially movable internal pilot slide for supplying and exhausting hydraulic fluid to the movable pulley discs to effect movement thereof, a first device responsive to actual engine speed for urging the slide in a first direction, a second device responsive to desired engine speed for applying an urging force on the slide in a second, opposite direction, and a third device for limiting the resulting urging force on the slide in the second direction, the third means being responsive to the transmission ratio.

Abstract: A torque support is provided having a casing supported by a pair of symmetrically arranged steering rods which are pivotally mounted to a pair of upwardly slanted guide rods. The guide rods are pivotally supported on a base member. Inter-connecting the guide rods and the steering rods is a tension-compression rod capable of absorbing tensile and compressive forces. All of the elements of the torque support are provided above floor level.The tension-compression rod is constructed as a plurality of elongated sections, separated from one another by gaps. Located within the elongated sections are compressive spring bundles and a shaft bolt which is secured to supporting surfaces of the elongated sections. In this manner, compressive and tensile forces are cpable of being absorbed by the tension-compression rod.

Abstract: A torque transmitting system for transmitting torque from a drive shaft of an engine to an output shaft without transmitting torque variation comprises a friction clutch unit interposed between these shafts, a fluid pressure-operated actuating unit for engaging and disengaging the friction clutch unit, and vibration detecting means detecting vibration occurring in the engine or the torque transmitting system. In the system, means are provided for controlling the pressure of actuating fluid supplied to the fluid pressure-operated actuating unit on the basis of the output signal from the vibration detecting means thereby adjusting the difference between the rotation speed of the drive shaft and that of the output shaft, whereby the torque can be transmitted from the drive shaft to the output shaft without any substantial variation.

Abstract: There is disclosed in a differential locking device with three-point support for a carriage of a vehicle having a bridge housing, a fork-shaped clutch lever therein symmetrical about a line therealong with a fork-shaped end and a shank and connected to a clutch hub by a sliding-ring, the device including a pushrod connected to a clutch lever and actuated by an air chamber, wherein self adjusting means are provided which connect one end of the clutch lever shank to the bridge housing and connecting the fork-shaped end to the clutch hub and means mounting the pushrod on the bridge housing between the connections to the fork-shaped end and the shank of the clutch lever at the line of symmetry of the clutch lever, which is a grooved bush mounted in the clutch lever and receptive of the pushrod and a catch spring for fixing the grooved bush into the clutch lever and the pushrod into the grooved bush.

Abstract: An automatic transmission for a city bus and other highway vehicles comprises an engine-mounted gearbox with a laterally offset drive output to the rear wheels through a propeller shaft and differential drive unit. The gear box has four layshafts grouped round the drive input shaft. Multiplate pneumatic clutches, one on each layshaft, select transmission ratios under the control of a driver's selector switch acting through an electronic control unit and an electro-pneumatic valve supplied with air by a compressor. The control unit includes a retarder function provided by simultaneous partial engagement of the first and second gear clutches when the vehicle is in third or fourth gear. Access to the clutches for servicing is provided by end covers on the gearbox whereby the clutch elements can be replaced without stripping the gearbox.

Abstract: An energy efficient drive system having apparatus for determining the load power, load speed, and necessary adjustment of the drive system to obtain a minimum brake specific energy consumption. The drive system includes structure for adjusting the drive in accordance with the determined adjustment. In one form, the drive system includes a variable speed transmission and the adjustment of the drive system is effected by adjusting the transmission in accordance with a determination of the necessary adjusted speed ratio for causing the motive device speed to be a minimum. In one form, the motive device is an internal combustion engine. The adjustment of the drive system to obtain maximum efficiency may alternatively be effected by adjusting the number of active cylinders of the engine. The determination may be made by reference to input information concerning the characteristics of the motive drive.

Abstract: Reverse gear synchronizing for a transmission of the type commonly used on large off-road vehicles is accomplished without the use of a reverse gear synchronizing clutch. The input shaft of the transmission carries a high and low gear separated by a high/low synchronizer clutch. Also, carried on the input shaft is a reverse gear and conventional clutch. A shift rod has a first shifting collar in shifting communication with the high/low synchronizer clutch and a second shifting collar in communication with the reverse clutch. A cam containing travel channels is in linked communication with the shifting collars such that movement of the cam produces clutch movement to engage the high, low, or reverse gear. The travel channels of the cam are so defined to enable relative movement between the high/low synchronizer and reverse clutch, whereby clashing between the reverse clutch and pin of the reverse gear is eliminated when the transmission gearing is changed from neutral to reverse.

Abstract: A transmission for a vehicle, including a torque converter, a planetary gear system capable of forming gear trains of forward low-speed range and high speed range by engagement and release of brakes and a clutch, a manual valve for gear shifting a shift valve, an electromagnetic valve, and a hydraulic control circuit for applying a line pressure to the clutch and brakes. The valves are mounted in a valve casing having a flat wall surface in face-to-face relation with a flat wall surface of a transmission casing. Clamped fluid-tight between the two flat wall surfaces is a partition plate which is provided with apertures for intercommunicating conduits of the hydraulic control circuit formed on the opposite flat wall surfaces of the casings. The present invention employs partition plates with different numbers of communicating holes in different positions.

Abstract: A hydraulic pressure regulator in a V-belt type continuously variable transmission for vehicles comprises a torque ratio pressure control valve providing torque ratio pressure corresponding to the reduction ratio between input and output shafts, a regulator valve receiving the torque ratio pressure and providing the line pressure corresponding to the torque ratio pressure, and feedback passages of output hydraulic pressure of the torque ratio pressure control valve acting on the torque ratio pressure passage through an orifice. In the hydraulic pressure regulator, the feedback hydraulic pressure is changed in intake or exhaust state and the torque ratio pressure entered to the regulator valve is varied stepwise corresponding to the throttle opening, and the line pressure is controlled stepwise corresponding to the throttle opening, thereby the line pressure can be approached to the minimum value required by the hydraulic control circuit.

Abstract: A propulsion transmission for a ship having a reversibly driven propeller shaft with a fixed pitch propeller and a torque converter of the single stage and fixed housing type for driving the propeller in the reverse direction. A planetary gear system is provided for driving the ship in a forward direction and a disengageable friction plate type brake is connected between the transmission housing and the planetary gear system and for forward drive. The brake is engaged to anchor a portion of the planetary gear system to drive said propeller shaft in a forward direction. The brake is disengaged when the torque converter is driving the propeller shaft in the reverse direction.One embodiment of the invention also includes a friction plate type clutch connected between the planetary gear system and the propeller shaft for transmitting power to the propeller shaft in a forward direction when the brake is disengaged.

Abstract: A control system and method for a power delivery system, such as in an automotive vehicle, having an engine coupled to a continuously variable ratio transmission (CVT). Totally independent control of engine and transmission enable the engine to precisely follow a desired operating characteristic, such as the ideal operating line for low fuel consumption. CVT ratio is controlled as a function of commanded desired system performance (e.g., power or torque) and measured actual system performance, such as CVT torque output, while engine fuel requirements (e.g., throttle position) are strictly a function of measured engine speed. Fuel requirements are therefore precisely adjusted in accordance with the ideal characteristics for any load placed on the engine. Appropriate controls prevent anomalous engine and vehicle behavior, and allow for transient start-up from rest.

Abstract: A mechanical synchronizer clutch selectively connects drive gears to an output shaft in response to movement of an actuator piston that pressurizes a hydraulic disc clutch following engagement of the synchronizer clutch with the gears. The disc clutch applies power to the gear train and removes torque therefrom so that the synchronizer clutch can produce engagement under no load. A variable diameter belt driven transmission produces an infinite range of speed ratios between the driven and the driving shaft. The driven shaft is coupled to an output shaft through the forward drive and reverse drive gear elements.

Abstract: A control system and method for a power delivery system, such as in an automotive vehicle, having an engine coupled to a continuously variable ratio transmission (CVT). Totally independent control of engine and transmission enable the engine to precisely follow a desired operating characteristic, such as the ideal operating line for low fuel consumption. CVT ratio is controlled as a function of commanded desired system performance (e.g., power or torque) and measured actual system performance, such as CVT torque output, while engine fuel requirements (e.g., throttle position) are strictly a function of measured engine speed. Fuel requirements are therefore precisely adjusted in accordance with the ideal characteristics for any load placed on the engine. Appropriate controls prevent anomalous engine and vehicle behavior, and allow for transient start-up from rest.

Abstract: In the four-wheel drive transfer apparatus for the automotive vehicle's automatic transmission which includes input shaft, a first output shaft coaxially aligned with the input shaft and normally having a power transmission from the input shaft, and a second output shaft in parallel with the first output shaft and having a power transmission from the input shaft when the four-wheel drive is selected, the improvement further includes a wet-type multiple-disc clutch member, a wet-type multiple-disc brake member, and a planetary gear set interposed between the input shaft and the first and second output shafts and containing gearing elements selectively operated by the clutch member and brake member so that the gearing elements engage with or disengage from each other, whereby the clutch member causes the input shaft and the second output shaft to engage with each other so as to switch between the two-wheel drive and four-wheel drive during the vehicle running conditions and enable the transfer apparatus to prov