Abstract: An earth working machine (10), encompassing a drive motor (42) and a working apparatus (22) drivable by the drive motor (42) so as to move rotationally, the drive motor (42) being connected to the working apparatus (22), for transfer of a torque, with interposition of a shiftable transmission (50; 150) comprising at least two gearing stages having different torque transfer ratios, is characterized in that by means of a first gearing stage of the shiftable transmission (50), an input shaft (48), coupled on the input side to the drive motor (42), of the shiftable transmission (50) is connectable in torque-transferring fashion directly to an output shaft (52), coupled on the output side to the working apparatus (22), of the shiftable transmission (50) so as to rotate together at the same rotation speed; and by means of a second gearing stage of the shiftable transmission (50), the input shaft (48) is connectable in torque-transferring fashion, with interposition of a transmission assemblage (64), to the output s

Abstract: The invention relates to a sleeve (1) providing a mechanical connection between a shaft of an electrical machine and a rotational bearing of the electrical machine (100) comprising: —a first portion (3) arranged to co-operate with the electrical machine shaft, —a second portion (5) arranged to co-operate with the rotational bearing, characterized in that the first portion (3) defines at least one internal chamber (4) and comprises at least one means of communication (6) between an environment surrounding the sleeve (1) and the internal chamber (4). Said invention is applicable to motor vehicles.

Abstract: A dry friction compensation method for at least one mass or inertia M mobile under the effect of at least one effector element controlled by a force or torque control signal U, the motion of the mass or inertia being characterized by a motion signal Y chosen among one or several of the position X, the speed V and the acceleration, the method includes: defining an ideal model of the closed loop; defining a dry friction compensation control law; the dry friction compensation control law being based on the following friction model: P = min ? ( max ? ( VM ? + U , - S ) , S ) , where V is the speed of the mobile mass or inertial subjected to the friction and ? a minor time constant, and S is a parameter of dry friction.

Abstract: Packaging for transmissions with an epicyclic gearbox speed reducer and oil pump is provided. Packaging comprises an epicyclic/planetary gearbox or single stage gear reducer with a sun gear, ring unit, and one or more planetary gears on the ring unit, and an oil pump located inside the packaging. The oil pump may be driven directly by a carrier, or driven by a carrier using a gear stage set. This configuration provides a tighter packaging of the full assembly of an epicyclic/planetary gearbox for transmissions with an internal oil pump, which reduces the weight of the unit, provides lubrication, and avoids splashing. The pump packaging may also be particularly valuable for electric vehicle (“EV”) independent motor applications.

Abstract: A power transfer mechanism for a four-wheel drive vehicle includes a first shaft for transferring torque to a first driveline, a second shaft for transferring torque to a second driveline, and a transfer mechanism driving the second shaft. A mode clutch drivingly connects the first shaft to the transfer mechanism and includes a clutch gear-driven by the transfer mechanism and a mode sleeve. A sprocket associated with the transfer mechanism has internal spline teeth meshed with external spline teeth on the second shaft with a predetermined amount of backlash therebetween. A ball cam mechanism centers the backlash and permits relative rotation of the transfer mechanism and the mode sleeve to circumvent a blocked mode shift.

Abstract: The invention concerns a drive train having a hydrodynamic retarder, by means of which the drive train can be braked hydrodynamically; wherein the hydrodynamic retarder comprises a driven rotor and a stator or a driven rotor and a counter-rotor driven in reverse direction with respect to the rotor, which together form a working chamber which can be filled with working medium and which can be drained from said medium.

Abstract: The present invention relates a mechanical differential actuator for interacting with a mechanical load. The mechanical differential actuator comprises first and second semi-active sub-actuators, a velocity source and first and second mechanical differentials having three interaction ports each. The first mechanical differential includes a first interaction port coupled to the velocity source, a second interaction port and a third interaction port coupled to the first semi-active sub-actuator. The second mechanical differential includes a first interaction port coupled to the velocity source, a second interaction port and a third interaction port coupled to the second semi-active sub-actuator. Finally, the second interaction ports of the first and second mechanical differentials are coupled together to form an output which is configured so as to be coupled to the load.

Abstract: A limited slip differential includes a driving plate, backing plates, differential gear assemblies, and a transmission assembly engaged together inside a sealed casing where fluid is pumped. The driving plate has pairs of communicated openings for interlocking two gears of each gear assembly, which extend by opposite directions from the driving plate for separately engaging with the transmission assembly. While synchronously rotating the plates, the gear assemblies are alternatively soaked into the fluid and each permits the fluid passing among the gears for adjusting the rotational speed. In the event that the rotational speed difference of axle shafts of the vehicle exceeds a threshold value, the LSD applies at least one gear assembly to generate a back pressure and efficiently block the fluid passing through the gears for limiting mutual rotational speed difference, hence achieving a limited-slip effect.

Abstract: A continuous variable transmission is provided that is based on gearwheels. The novel gear acts as efficient transmission that can replace conventional manually or automatics gears. The CVT comprises sun gear connected to input shaft and ring gear fixedly connected to output shaft. Planet gear is arranged between and engaged with the sun gear and the ring gear wherein a planet carrier that is vertically enclosing the ring gear and the sun gear is provided with a canal in which an oil pump is provided. A control valve is capable of controlling the flow of lubricant within the canal.

Abstract: The present invention relates to a braking system (1). The system comprises an annulus gear (3) having a fluid contained therein and at least one planet gear (4), arranged within the annulus gear and rotatably engaged therewith. The system further comprises means (10) for controlling the flow of fluid within the system to control relative rotational motion between the planet gear and the annulus gear.

Abstract: A vehicle transmission has a planet gear rotatably connected to an input shaft. A sun gear and an annulus gear are drivingly connected to the planet gear. A hydraulic pump is drivingly connected to the input shaft. A high-pressure oil line hydraulically communicates between the hydraulic pump and a region defined between the annulus gear, the sun gear, and the planet gear. The pressurized oil is used to change the driving resistance of the planet gear to the annulus gear and to change the driving resistance of the planet gear to sun gear. The annulus gear is connected to the one-way-clutch. An output shaft is connected to the planet gear.

Abstract: Helical gears, which are provided for a sun gear, planet gears, and an internal gear, have helix angles ? of not less than 25 degrees and not more than 45 degrees. Pawls provided for lock sections and internal gear lock receiving sections of the internal gear have rising angles ?, respectively, that satisfy the relational expression, 0 ?tan ?<(?·di)/{dp·tan(90??)}, wherein ? is the helix angle of the sun gear, ? is the screw efficiency of the sun gear as a sliding screw, dp is the pitch circle diameter of the sun gear, and di is an outer diameter of the internal gear defining a center of application of torque of the pawls.

Abstract: A stepless variable ratio gear train (201) comprising first and second stage gear trains (1), (101) with controllable variable velocity ratios between their inputs and outputs, wherein the velocity of the output of the first stage gear train (1) relative to the input of the first stage gear train (1) is decreased when a relatively high torque is applied to the gear train (201), and is increased when a relatively low torque is applied to the gear train (201). The gear train (201) further comprising means to control the velocity ratio of the first stage gear train (1) comprising a brake (301) that produces a relatively high braking force when a relatively low torque is applied to it to produce a low velocity ratio in the first stage and second stage gear trains (1), (101) and a relatively low braking force when a relatively high torque is applied to it to produce a high velocity ratio in the first stage and second stage gear trains (1), (101).

Abstract: Helical gears are used for a sun gear, planet gears, and an internal gear. Accordingly, when a load, which exceeds a preset torque, is applied to the internal gear, the internal gear is moved in a direction toward an input shaft or a direction toward an output shaft while making rotation in a direction different from that of the sun gear to automatically switch the speed reducing ratio.

Abstract: A manual valve is provided between a mechanical oil pump and a clutch of an automatic transmission device for connecting an engine with the automatic transmission device, a first check valve is provided in a passage connecting the mechanical oil pump with the manual valve, and an electric oil pump is provided in parallel with the mechanical oil pump, wherein the electric oil pump is operated during an idling stop of the engine and an output side of the electric oil pump is connected to the passage between the first check valve and the manual valve so that the working fluid from the electric oil pump is supplied to the clutch of the automatic transmission device through the manual valve. Accordingly, the electric oil pump can be made smaller and the supply of the working fluid from the electric oil pump to the clutch can be prevented when it is not necessary.

Abstract: This is a super duty continuously variable transmission that uses an input differential assembly 3, underdrive/accelerator pump assembly 4, output differential/decelerator pump assembly 5, overdrive assembly 6, and a reverse, neutral, direct assembly. All assemblies are planetary gear sets in nature. The accelerator pump 4 and decelerator pump 5 control the rotation direction of the first four assemblies which changes the output shaft ratio infinitely over an upper and lower limit. The pumps are of the variable vane type and as one is pumping, the other acts like a turbine with the first pumps high pressure fluid pushing the back of the second pumps vanes, and visa versa.

Abstract: This invention provides the use of a pump to regulate torque in a planetary gear system. The pump is provided with a bore and a valve, which operates to control the flow of fluid within the bore. When the valve is positioned within the bore to block the flow of fluid between the inlet and outlet of the pump, pressure is generated within the pump. The pump pressure is sufficient to generate torque in the planetary gear system.

Abstract: This invention provides the use of a pump to regulate torque in a planetary gear system. The pump is provided with a moveable piston as an end plate. An actuator, attached to the piston, controls the movement of the piston. In one position, the piston is in contact with the internal components of the pump. When the actuator moves the piston, the piston loses contact with the pump, thus allowing a free flow of fluid between the inlet and outlet of the pump. In this configuration, the pump is no longer able to generate the pressure that creates torque in the planetary gear system.

Abstract: Continuous torque regulator formed by a transmission system and a regulating circuit, wherein the transmission system is formed by three epicycloid gears, in which each one is formed by a planetary gear, a series of satellite pinions and a crown wheel, wherein the second and third planetary gears are rigidly joined, and the satellite gears of the third train are double, the regulating circuit having a pressure pump (Bp) which is joined by means of a pinion to the crown wheel (C1), a control valve (Vc) which is joined by means of a pinion to the shaft of the planetary gear (A1) and a valve (N) which in the event of being actuated torque transmission ceases, the assembly permitting the regulation of torque in a continuous form without steps and without any need for interruption mechanisms, it being possible to interrupt the transmission at will.

Abstract: A continuously variable ratio transmission includes a planetary gear set connected to a prime mover having first and second output shafts. The first output shaft is connected in a hydraulic braking circuit including a positive displacement pump and an operator controlled variable flow valve for varying the resistive torque on the output shaft and effective a gear ratio change at the other output shaft.

Abstract: This invention provides the use of a pump to regulate torque in a planetary gear system. The pump is provided with a bore and a valve, which operates to control the flow of fluid within the bore. When the valve is positioned within the bore to block the flow of fluid between the inlet and outlet of the pump, pressure is generated within the pump. The pump pressure is sufficient to generate torque in the planetary gear system.

Abstract: The invention is relative to a multi-speed gearbox comprising a gearbox input shaft and a gearbox output shaft, a first mechanical gearbox portion, means for coupling this first mechanical part to the gearbox input shaft, and a starting element. The invention further comprises a second mechanical gearbox portion comprising at least one planetary gear set. A first gearbox element of the second mechanical gearbox portion is coupled to the first mechanical gearbox portion and the second gearbox outlet shaft. The starting element is designed as a brake device and associated with a second gearbox element of the second mechanical gearbox portion. The first mechanical gearbox portion has means for carrying out the individual gear steps, which can be controlled in such a manner that the transmissions in first gear and in reverse gear can be determined by the second mechanical gearbox portion.

Abstract: The invention is an infinitely variable ratio transmission that may include an input shaft connected to a carrier plate. The input shaft is disposed within the bore of a sun gear. At least one planetary gear is rotatably attached to the carrier plate. A ring gear is connected to an output shaft. The planetary gear is disposed between and meshed with the ring gear and the sun gear. A pump having a first and second gear enclosed within a housing is disposed about the input shaft. The second gear is attached to the sun gear. A pump oil pickup passageway connects an inlet port on the pump to a pump oil reservoir. A pump oil return passageway connects an outlet port of the pump to the reservoir. A control valve is provided to regulate fluid flow through the pump. Various clutch arrangements are disclosed to provide a reverse mode. In one embodiment of the invention a five piston variation pump is described in which the pistons are urged against an eccentric lobe mounted on the crankshaft of the transmission.

Abstract: Proposed is a hydraulic scheme for a stepless automatic transmission of a motor vehicle. The system has a variator which is controlled by a hydraulic regulating apparatus, and which possesses a cooler (11) placed in an oil lubricating/cooling circulation from which a line (14) leads from cooler (11) to an oil sump (1). An orifice (13) is located after the cooler (11) in the line (14), in the direction of oil flow, the oil flow through the orifice (13) is controllable as a function of the speed of rotation of the drive motor of the vehicle and/or the speed of the vehicle.

Abstract: A constant output transmission apparatus operable to transform a variable RPM input to an input shaft member through the use of double planetary gear set means and the use of a low range gear and clutch assembly and a high range gear and clutch assembly to transfer output through a ring gear and carrier assembly and an output ring gear assembly to an output shaft assembly to provide a constant RPM output to an output shaft member. The variable input to the input shaft member is constantly causing rotation of an input carrier plate assembly driving input planet gear members and, concurrently, driving an input drive gear assembly. The input gear drive assembly is operable to concurrently drive a low range gear and clutch assembly and a high range gear and clutch assembly. On activation of a respective low range clutch piston or a high range clutch piston, this operates to selectively operate and rotate a respective low range clutch assembly and a high range clutch assembly.

Abstract: The invention is related to a rotational speed converter comprising shafts (1, 2) with bevelled gears fixed thereon, separate bevelled gears (3, 4) which cooperate with said gears fixed onto said shafts and are mounted on a separate shaft (5), a planetary gear (6) connected to said separate shaft, and at least one braking gear (7) acting on said planetary gear.

Abstract: A continuously variable transmission utilizing variable viscous couplings and power planetary gear sets having 1) a power input means; 2) a common ring gear means connected to the power input means; 3) a center planetary and reverse brake means connected to the common ring gear means; and 4) a power output means having a control planetary gear assembly mounted between a power output shaft and the common ring gear means. The power input means has an input planetary assembly connected to a power input shaft and operably connected to the common ring gear means. The center planetary and reverse clutch means includes a center planetary gear assembly connected to a reverse variable viscous brake to control operation in a reverse operation mode. The power input means includes a control planetary gear assembly operably connected to the common ring gear means and to a ratio variable viscous clutch to control operation in a drive range operation.

Abstract: An apparatus for torque-converter clutch transmission includes a final output planetary gear, at lease a braking pump, a compound planetary gear train, an oil path system, and a centrifugal pump. The final output planetary gear includes a sun gear mounted on an engine crankshaft, a planetary carrier mounted on an output shaft, and a ring gear. The compound planetary gear train includes first and second planetary gears which together share a common ring gear. The first planetary gear further includes a sun gear mounted to the engine crankshaft and a planetary carrier connected to a rotor shaft of the braking pump, and a ring gear, while the second planetary gear further includes a sun gear connected to the ring gear of the final output planetary gear and a planetary carrier fixedly mounted to an inner wall of a gear box.

Abstract: A transfer case for a four-wheel drive vehicle adapted to provide two- to four-wheel drive on-demand in the high range or four-wheel drive in the low range. The transfer case includes an input shaft coupled to the sun gear of a planetary gear set, a main drive shaft, a first output and a second output. Provided in fixed association with the main drive shaft is a viscous fluid coupling chamber, and associated with the chamber is a drive sprocket. A range clutch sleeve and locking clutch assembly is slidably disposed on the main drive shaft between the planetary gear set and the rotary member for selectively providing two- to four-wheel on-demand high range power, neutral, and four-wheel drive low range power. Inner and outer relatively rotational drum housings surround the aft end of the main drive shaft for defining an annular viscous fluid coupling chamber therebetween.

Abstract: A device for damping torsional vibration of a drive shaft with a liquid damping medium including a primary gear connected to the drive shaft. A secondary gear supports a series of planetary gears in meshed connection with the primary gear. The revolving primary gear and the planetary gears form a gear pump for closed circulation of the liquid damping medium through pressure ducts. The device further includes a control device for controlling the flow rate of the liquid damping medium based on the rotational speed of the primary gear.

Abstract: Provided is a transfer case having an integrated planetary gear assembly is operably installed between an input member and first and second output members and constructed in a compact dual-planetary arrangement having dual sun gears and dual planet gears that are journally supported from a carrier. The planetary gear assembly is axially slidable relative to the input and output members to a number of positions for establishing various drive modes. Included among the drive modes is a two-wheel with on-demand four-wheel drive high-range mode. In this arrangement, the carrier is driven by the input member, and the first output is engaged with the carrier for providing two-wheel drive output. The carrier is further coupled to the input member of a torque coupling device. The torque coupling device is operable to sense relative rotation between the first and second output members and to deliver torque to the second output member in response to a loss of traction at the first output member.

Abstract: The specification discloses a transfer case for four-wheel-drive vehicles. In one embodiment, the transfer case includes a fluid coupling and rotation of an input shaft is transferred to a front drive shaft by a pair of opposed rotatable rings having interleaved fins. The interleaved fins provide fluid filled chambers and relative movement of the fins compresses the fluid and increases the ability of the fluid to transfer torque.

Abstract: A geared torque transfer device is provided having a planetary type gear arrangement disposed within a sealed housing that is filled with a viscous fluid. In operation, rotation of the planet gears within the housing in response to a speed differential between the input and output members causes the viscous fluid to be forcibly pumped through passages formed within the housing. Valves responsive to changes in the operating temperature and/or viscous fluid pressure of the geared traction unit adjust the amount of resistance to the flow of the fluid as it is pumped through the passages. The hydraulic resistance created by pumping the viscous fluid is adapted to resist the free rotation of the device, thereby causing torque to be transferred between the input and output members as a function of the differential speed therebetween.

Abstract: A start-up coupling engages progressively in two stages. During the first stage drive is transmitted from an input shaft (3) along respective paths (8,7,9,12,11,10,25 and 26; and, 19,20,19 and 32) to helically-toothed rollers (27,30) which mesh but are designed to be incapable of transmitting drive between them, or of doing so very inefficiently. The rollers (27,30) are mounted in an oil-filled chamber (18) in a casing (1) integral with an output shaft (2). During the first hydraulic stage of engagement, oil pockets between their oppositely-moving teeth (28,31) prevent them from engaging as the phase of one roller (27) is progressively changed by a centrifugal adjustment (4) against the bias of a torque cell (19). However, increasing frictional resistance in the oil pockets causes the rollers (27,30) to exert an increasing rotational torque on the casing (1).

Abstract: A device for providing a retarding force against the motion of a vehicle, which device does not intrude upon the engine, is not dependent upon the vehicle gear selected, and does not exhibit fade or skid characteristics. A multiple plate clutch engages the drive train of the vehicle with a compressor assembly. A three speed gear assembly is operatively connected between the multiple plate clutch and the providing modulation of the ratio of speed between the aerodynamic rotor and the drive train. A throttle valve governs the fluid mass flow through the rotor of the compressor assembly providing precise modulation of retarding torque exerted by the rotor. The device may also be adapted for other types of machines and motors having rotating shafts upon which it is desired to apply a retarding torque.

Abstract: A constant speed drive differential assembly (10) has an input end plate (11), a rotatable housing (17), and an output end plate (18). A gear motor (12) comprising meshing spur gears (13, 14) mounted on shafts (15, 16) are arranged in the housing (17). A driving gear (20) is fixed to one of the shafts (15 or 16) and meshes with an ouput gear (21) fixed to a cover plate (19) which is rotatable with respect to the housing (17) as a result of differential over-or-under-rotation effected by the spur gears (13, 14). A governor/speed controlled valve (28) external of the housing (17) connects a fluid source from an external pump (27) to one side (40) or the other side (41) of the meshing spur gears (13, 14) in response to an overspeed or underspeed condition of the input speed transmitted to the assembly (10).

Abstract: This invention relates to a variable transmission apparatus utilizing either a viscous fluid clutch means or a torque converter clutch means. In both embodiments of the variable transmission apparatus, a power input carrier means is driven from a main drive shaft and interconnected through 1) a planet gear means; 2) a sun gear means; 3) a viscous fluid clutch means or a torque converter clutch means; 4) an overdrive clutch means; and 5) outwardly to an output drive means to drive an output shaft. The viscous fluid clutch means is operable through a clutch actuator assembly connected to a clutch disk assembly in order to interconnect the sun gear assembly to the planet gear assembly which, in turn, drives an output ring gear member in a preselected mode. The torque converter clutch means is operable to selectively interconnect the sun gear means to the planet gear means so as to achieve a desired output to a ring gear assembly which is connected to an output drive shaft member.