Abstract: [Problem] To provide a planetary gear assembly that, while increasing the speed change range of a power-split stepless transmission formed in cooperation a stepless transmission, can reduce the overall size of the power-split stepless transmission. [Solution] The planetary gear assembly according to the present invention includes: a cylindrical transmission shaft, an output shaft inserted into the transmission shaft, first and second planetary gear mechanisms each having a first sun gear supported to the transmission shaft without a relative rotation about an axial line, first and second clutch mechanisms that are placed coaxially with the transmission shaft, and that engage and disengage a power transmission of power to standard rotary speed power input units of the first and second planetary gear mechanisms, and a connection member extrapolated to the transmission shaft with a free relative rotation about an axial line.

Abstract: A vehicle transaxle comprising a plurality of mounting flanges fixedly mountable to an axle tube of the vehicle absent any additional structure for mounting the transaxle to the vehicle. The axle tube houses a wheel axle to which the transaxle is operably couplable. The transaxle additionally comprises a transaxle mounting collar that is fixedly mounted to or integrally formed with a housing of the transaxle. The mounting collar is structured and operable to have a prime mover of the vehicle mounted thereto and to support the weight/mass of the prime mover such that the prime mover is mountable to the vehicle via only the mounting collar absent any additional structure for mounting the prime mover to the vehicle such that the prime mover can be cantilevered from (e.g., suspended from) the transaxle, e.g., the prime mover is ‘free floating’.

Abstract: Provided are a speed changer device, a forward/reverse switchover device for converting output of the speed changer device into forward traveling power and reverse traveling power, a rear wheel differential mechanism for inputting output of the forward/reverse switchover device and transmitting it to rear wheels, and a gear transmission mechanism for transmitting power of an output shaft of the forward/reverse switchover device to an input shaft of the rear wheel differential mechanism. A transmission case is separable into a front case portion accommodating the speed changer device and a rear case portion accommodating the forward/reverse switchover device, the rear wheel differential mechanism and the gear transmission mechanism. The gear transmission mechanism is detachably provided at a portion of the inside of the transmission case which portion corresponds to a front end portion of the rear case portion.

Abstract: A transaxle casing has a fluid sump having a gear top cover, an HST, a reduction gear train and at least one axle disposed in the transaxle casing. The gear top cover accommodates a part of a rotation portion of the reduction gear train. An air supply and exhaust hole is disposed on an upper surface of the gear top cover facing an air sump and is arranged at a position different from a point above a bevel gear. A breather is attached at the air supply and exhaust hole, and a first inner wall extending downward from the upper surface of the upper casing member, is positioned between the part of the bevel gear and the air supply and exhaust hole.

Abstract: In a hydraulic motor and a hydrostatic traction drive with such a hydraulic motor, the regulating of the displacement of the hydraulic motor is done via a pilot-operated pressure regulator. The feedforward controller calculates an estimated motor displacement and relays this to the pressure regulator.

Abstract: In at least some implementations, a vehicle drivetrain assembly includes a housing, a reservoir and a conduit. The housing has a housing interior, a housing inlet communicating with the housing interior, a housing outlet communicating with the housing interior, and an opening communicating with the housing interior and adapted to receive part of a shaft. The reservoir is carried by the housing and has a reservoir interior, a reservoir inlet communicating with the reservoir interior, and at least one reservoir outlet communicating with the reservoir interior. The conduit is coupled at a first end to the housing outlet and coupled at a second end to the reservoir inlet, wherein at least part of the conduit extends above the housing interior relative to gravity, and the conduit is routed about an exterior of the housing.

Abstract: A hydraulic transaxle of the present invention includes an axle, a hydraulic static transmission (“HST”), a center case that has pair of oil passages for circulating the hydraulic oil between the hydraulic pump and the hydraulic motor, and a gear mechanism that transmits an output of the HST to the axle. A case supports the axle and accommodates the HST while also forming an oil reservoir. A hydraulic motor of the HST includes a motor shaft, a cylinder block with a plurality of cylinders fixed to the motor shaft, a plurality of pistons inserted into the cylinders, a fixed swash plate abutted by the plurality of pistons, and a fixed swash plate holder that supports the fixed swash plate with respect to the case. The motor shaft of the hydraulic motor is supported by the center case and the fixed swash plate holder.

Abstract: A multi-mode continuously variable transmission with both speed coupling and torque coupling includes an engine-power input assembly, a hydraulic transmission assembly, a motor transmission assembly, a planetary gear assembly, an output member, a clutch assembly, and a brake assembly, wherein an output end of the planetary gear assembly is connected to the output member, the clutch assembly connects the engine-power input assembly, the hydraulic transmission assembly, and the motor transmission assembly to an input end of the planetary gear assembly, and the clutch assembly connects the engine-power input assembly to the hydraulic transmission assembly; and the clutch assembly and the brake assembly provide a continuously changing transmission ratio between the engine-power input assembly or/and the motor transmission assembly and the output member.

Abstract: A turbofan engine includes a fan section. A turbine section is in driving engagement with the fan section through a star gear system. The star gear system includes a plurality of star gears surrounding a sun gear. A carrier supports the plurality of star gears and includes a first carrier bearing flange. A ring gear surrounds the plurality of star gears and includes a ring gear bearing flange. At least one ring gear carrier bearing engages the carrier bearing flange and the ring gear bearing flange. A speed change mechanism for a gas turbine engine is also disclosed.

Abstract: A transaxle system for a golf car, wherein the system comprises a transaxle and a matting interface. The transaxle comprises a plurality of mounting flanges fixedly mountable to at least one axle tube of the golf car, wherein the at least one axle tube houses at least one wheel axle, and the transaxle is operably couplable to the at least one wheel axle. The transaxle additionally comprising a transaxle mounting collar that is fixedly mounted to or integrally formed with a housing of the transaxle. The mating interface is mountable to the transaxle mounting collar, and is structured and operable to have an integrated internal combustion engine-transmission unit of the golf car mounted thereto.

Abstract: A hydraulic transaxle includes a transaxle casing including an upper transaxle housing and a lower casing, hydrostatic transmission (“HST”), and an axle. The HST has a hydraulic pump and a hydraulic motor that are fluidly connected to each other. The hydraulic motor has a motor shaft that is drivingly connected to the axle through a reduction gear train that is disposed between the hydraulic pump and the axle. Reduction gear train has a gear shaft supported by the upper transaxle housing via a ball bearing. At least a part of the upper transaxle housing is formed by a gear top cover made of metal and covering the reduction gear train. Ball bearing is supported by the upper transaxle housing and the gear top cover.

Abstract: In a transaxle, the transaxle includes a hydrostatic continuously variable transmission, at least one axle, a gear train for drivingly connecting the hydrostatic continuously variable transmission and the axle, a housing accommodating the hydrostatic continuously variable transmission, the axle, the gear train and storing an oil therein, and a reservoir tank connected to the housing so that the oil in the housing can be moved back and forth. The reservoir tank has a rectangular parallelepiped shape and is disposed on a side of a final reduction bull gear included in the gear train and above the axle along an axis direction of the axle.

Abstract: The present disclosure provides a glue supply device for a labeling unit with a glue printer, comprising: a storage tank for glue, a supply line for supplying glue from the storage tank to the glue printer, a continuously delivering glue pump which is embodied to deliver glue from the storage tank into the supply line, and a hydropneumatic reservoir for the glue, wherein the hydro-pneumatic reservoir is arranged at the supply line upstream of the glue printer.

Abstract: A transaxle comprises a hydrostatic transmission (hereinafter, “HST”), an axle, a gear train transmitting power from the HST to the axle, a casing carrying the HST, the gear train and the axle and providing a fluid sump. The casing has an air space over the fluid sump of a gear chamber, a breather cap for ventilation of the air space and for an oil cap is installed on a top part of the casing, and a partition plate is installed right under the breather cap and prevents the fluid sup facing directly to the breather cap.

Abstract: A tractor includes an engine, a transmission coupled to the engine, a hydraulic pump driven by the engine, at least one of a tractor implement, attachment, or control moved by the hydraulic pump, a sensor, and a controller coupled to the transmission. The controller is configured to downshift the transmission based on a signal from the sensor.

Abstract: A power train is provided having a reduced size and weight. A hydraulic motor includes a rotatable output shaft. Wheel bearings rotatably support a rotatable housing relative to a motor housing. A hydraulic clutch mechanism permits or prohibits rotation of a second carrier of a second planetary gear reducer about the center of rotation of the output shaft. The hydraulic clutch mechanism is disposed on the radially inner side relative to the wheel bearings.

Abstract: A power-split transmission which is designed to be operated with either first or second deceleration logics. The second deceleration logic has a higher deceleration dynamic than the first deceleration logic, and is designed to disengage an engaged range clutch immediately so as to reduce the transmission ratio by way of a hydrostatic unit with a maximum dynamic. A method of operating the transmission includes: monitoring various vehicle parameters while the vehicle is operated with the first deceleration logic; detecting that at least one set limit value has been exceeded while the vehicle operated with the first deceleration logic; activating the second deceleration logic, to immediately disengage an engaged range clutch; reducing a transmission ratio to a maximum using the hydrostatic unit, the hydrostatic unit being displaced with a maximum dynamic; and engaging the range clutch and activating the first deceleration logic.

Abstract: A product may include a differential unit, and an electrical machine may be interconnected with the differential unit. The differential unit and the electrical machine may be lubricated by a fluid. A reservoir may be defined above the electrical machine. The reservoir may receive the fluid during operation of the differential unit and may selectively store and release the fluid.

Abstract: In a bent axis type axial piston motor, so as to smoothly rotate a drive shaft without lowering motor efficiency and brake the drive shaft if necessary, when the drive shaft is rotated through a cylinder block by causing piston rods to reciprocate, relative rotation between separate plates and friction plates is allowed by removing a pressing force applied by a braking piston, and when the separate plates and the friction plates are pushed to a brake force receiving plate by the braking piston, relative rotation between the separate plates and the friction plates is restrained and thus the drive shaft is braked. Restriction members are disposed between a casing and the brake force receiving plate so as to restrain the brake force receiving plate from moving relative to the casing along the axis of the drive shaft.

Abstract: The invention concerns a transmission mounted in a housing between a turbine and a generator on top of a tower of a wind turbine, comprising a gearbox and in the gearbox a main gear mounted on a main gear shaft and a pinion that engages a set of gear teeth of the main gear. The pinion is mounted on a pinion shaft and the pinion shaft is coupled to a hydraulic pump mounted on the gearbox, a hydraulic motor drives the generator. In accordance with the invention the main gear shaft and the rotor shaft together form a common shaft and a main gear shaft bearing is mounted between the common shaft and the gearbox and at least two tension bars prevent the rotation of the gearbox and leave the gearbox free to move in linear directions.

Abstract: The invention relates to a self-propelling construction machine which has a chassis 1 which has wheels or crawler track units 1A, 1B. The construction machine according to the invention is distinguished by the fact that the gear mechanism system 6 for transmitting the drive power from the drive unit 5, which comprises at least one internal combustion engine 5A, to the working unit 4, which comprises at least one working assembly 4A, does not have a conventional clutch with which the working unit can be activated but instead has a hydrodynamic gear mechanism 10 which has a drive shaft 10A and an output shaft 10B.

Abstract: A hydromechanical transmission has a hydraulic pump-driven hydraulic motor of a hydrostatic continuously variable transmission and a mechanical multi-step variable speed transmission connected to a drive shaft of the hydraulic motor, which can be shifted into operation by a gear shifting device. In order to adapt the hydromechanical transmission with as compact as possible a design to diverse installation cases with little effort, the gear shifting device is arranged directly adjacent to the hydraulic motor and is consolidated with the latter into a preassembled constructional unit.

Abstract: A controller is provided for varying gear ratios in a transmission system including at least one planetary gear train disposed within a housing. The controller includes a ratio control gear set, a ratio control pump, and a relief valve. The ratio control gear set includes a sun gear, a planet carrier, and a ring gear. The planet carrier is configured to rotatably connect to an output shaft of an engine. The ring gear is configured to mesh with a sun gear of the planetary gear train. The ratio control pump includes a body configured to rigidly connect to the housing, and a rotor rigidly coupled to the sun gear of the ratio control gear set. The rotor is configured to co-act with the body to pump fluid. The relief valve is configured to restrict fluid egress from the ratio control pump.

Abstract: A continuously variable transmission for a hydraulic mechanism in hybrid cars with recovered power-split energy mainly comprises a multi-function planet differential gear train pump and a hydraulic variable pump (motor). The planet differential gear train pump provides a hydraulic constant pump, and a planet gear system thereof provides a speed-adjustable function as well as a speed-collecting function. Thereby, the planet differential gear train pump of the present invention is used to substitute the conventional planet gear system and the hydraulic constant pump in the continuously variable transmission.

Abstract: A transmission for transferring torque from a prime mover includes a first input shaft adapted to be driven by the prime mover, a second input shaft, an output shaft and an epicyclic gearset. The gearset includes a ring gear being driven by the first input shaft, pinion gears being driven by the ring gear, a sun gear driven by the second input shaft and driving the pinion gears, and a carrier driving the output shaft. A reaction motor drives the second input shaft. A controller controls the reaction motor to vary the speed of the second input shaft and define a gear ratio between the first input shaft and the output shaft based on the second input shaft speed.

Abstract: A final drive for a vehicle is disclosed. The final drive includes a motor assembly, a planetary gear train and a drive sprocket. The motor assembly includes a hydraulic motor, an output shaft, a housing, a thrust bearing, a brake and first, second and third chambers. The housing includes a supply port, a first passageway, a second passageway and a drain port.

Abstract: A transmission for transferring torque from a prime mover includes a first input shaft adapted to be driven by the prime mover, a second input shaft, an output shaft and an epicyclic gearset. The gearset includes a ring gear being driven by the first input shaft, pinion gears being driven by the ring gear, a sun gear driven by the second input shaft and driving the pinion gears, and a carrier driving the output shaft. A reaction motor drives the second input shaft. A controller controls the reaction motor to vary the speed of the second input shaft and define a gear ratio between the first input shaft and the output shaft based on the second input shaft speed.

Abstract: A hydrostatic mechanical power split transmission includes a housing, at least one first power branch having at least one hydraulic pump and at least one hydraulic motor, and at least one drive shaft provided with gear wheel elements, which is disposed inside the housing and can be directly or indirectly driven by at least one drive engine, in particular an internal combustion engine as a further power branch, the drive shaft being able to selectively act either directly or indirectly on the sun gear of a planetary gear system by way of at least one clutch, to be decoupled from the planetary gear system, wherein the planetary gear system can be switched to a state of constrained motion by way of further clutches as a function of the respective operating state of the power split transmission.

Abstract: A transmission apparatus for a tractor is operable to transmit a forward drive force in a wide speed changing range to the traveling device and which is operable also to transmit a reverse drive force to the traveling device. A planetary transmission section is configured to output the forward drive force in whichever case a hydrostatic stepless speed changing section is speed-changed to a forward rotation speed change state or a reverse rotation speed change state. A low speed transmission clutch couples a low speed side speed changing gear to a counter shaft to be rotatable therewith. A high speed transmission clutch couples a high speed side speed changing gear to the counter shaft to be rotatable therewith. A reverse transmission clutch couples a reverse transmission gear to an output shaft to be rotatable therewith.

Abstract: One disclosed embodiment relates to a propulsion system for a machine. The propulsion system may include a prime mover operatively connected through a continuously variable transmission to a propulsion device. The propulsion system may also include propulsion-system controls that control an operating parameter of the continuously variable transmission, which may include adjusting the operating parameter based on operator input. Controlling the operating parameter may also include determining an adjustment limit for the operating parameter based on one or more operating conditions and applying the adjustment limit to the operating parameter to modify at least one of acceleration and jerk of the machine based on the one or more operating conditions.

Abstract: A hybrid system includes a hybrid module that is located between an engine and a transmission. The hybrid system includes an energy storage system for storing energy from and supplying energy to the hybrid module. An inverter transfers power between the energy storage system and the hybrid module. The hybrid system also includes a cooling system, a DC-DC converter, and a high voltage tap. The hybrid module is designed to recover energy, such as during braking, as well as power the vehicle. The hybrid module includes an electrical machine (eMachine) along with electrical and mechanical pumps for circulating fluid. A clutch provides the sole operative connection between the engine and the eMachine. The hybrid system further incorporates a power take off (PTO) unit that is configured to be powered by the engine and/or the eMachine.

Abstract: A method including activating a first clutch assembly to connect a first rotatable member to a rotating final output member until a shift trigger point is reached to provide a rotational speed to the first rotatable member from the final output member. The first clutch assembly is then deactivated. The second clutch assembly that connected a synchronized second rotatable member with the final output member is then deactivated. A third synchronizer engaged with the first rotatable member, and the first clutch assembly is activated to connect the first rotatable member to the final output member.

Abstract: A method for controlling a transmission assembly includes providing a vehicle having a first power source and a second power source disposed in parallel with the first power source. The first power source includes a prime mover and a transmission assembly. The transmission assembly includes a torque converter coupled to the prime mover. The transmission assembly further includes a clutch that selectively engages the torque converter to a transmission of the transmission assembly. The second power source includes a pump-motor unit, a fluid reservoir and an energy storage unit. A torque value of the second power source is compared to a torque threshold value. The clutch of the transmission assembly is disengaged so that the torque converter of the transmission assembly is disengaged from the transmission of the transmission assembly when the torque value of the second power source is greater than or equal to the torque threshold value.

Abstract: A system for providing hydraulic power in a machine transmission includes a first hydraulic variator and a second hydraulic variator, each variator having a mechanical input to a hydraulic pump, and a hydraulic motor linked to the hydraulic pump via a hydraulic circuit, and a mechanical output from the hydraulic motor. In an embodiment, the first hydraulic circuit side of one variator is hydraulically connected to the first hydraulic side of the other variator, and the second hydraulic circuit sides are likewise linked together. A common input is geared to the inputs of the variators and a common output is geared to the outputs of the variators, tying the pump and motor of each variator to rotate at the same speed as the counterpart components of the other variator.

Abstract: A motor vehicle power train includes a main drive engine with an output shaft for driving the drive wheels of the motor vehicle, an electric motor which includes a rotor and a stator, also for driving the drive wheels of the motor vehicle, an automatic transmission, with a plurality of selectively settable drive connections, a transmission input shaft and a transmission output shaft, the rotor of the electric motor being disposed in a drive connection between the output shaft of the main drive engine and the transmission input shaft, and can be disengaged from the output shaft with a clutch, and at least one ancillary unit which can be driven by the main drive engine. The rotor of the electric motor includes an exterior drive having a gearing of friction surface which has a driving connection to the at least one ancillary unit.

Abstract: Power split drive (PSD) transmissions capable of energy recovery and suitable for use in automotive applications. Each PSD transmission includes a mechanical transmission system for mechanically transmitting mechanical power between a rotatable input shaft and a rotatable output shaft, and a hydraulic transmission system containing a fluid for hydraulically transmitting hydraulic power between the input shaft and the output shaft, and at least a third shaft operatively interconnected to one of the mechanical and hydraulic transmission systems. The hydraulic transmission system is operatively coupled by at least a first planetary gear train to the mechanical transmission system. According to the invention, the PSD further comprises means operatively associated with at least one of the mechanical and hydraulic transmission systems for storing and releasing energy within the PSD transmission, the energy storing and releasing means comprising a flywheel or an accumulator or a combination thereof.

Abstract: A powertrain includes an engine and a continuously variable transmission including a planetary gear arrangement and a variator. An input drives the variator and the planetary gears. A first planetary output gear is connected to the first output of the planetary gear arrangement. A second planetary output gear is connected to the first output, and a third planetary output gear is connectable by a first clutch to a second output of the planetary gear arrangement. A first output member is connected to the third planetary output gear, a second clutch releasably connects the first output member with the first planetary output gear, a third clutch connects the first output member with the second planetary output gear, a fourth clutch connects the second output member with the first planetary output gear, and a fifth clutch connects the second output member with the second planetary output gear.

Abstract: A continuously variable transmission device (1) for a vehicle with a variator (3), a planetary gear unit (4) and a manual gear unit (9) arranged in a transmission housing. The variator (3) is connected with the planetary gear unit (4) and with the manual gear unit (9) in the area of a first shaft (14) and in the area of a second shaft (15). The variator (3) and the planetary gear unit (4) form a module (2) and are arranged on a common carrier plate (19).

Abstract: A load control system for a work vehicle including set rotation speed detection means for detecting a set rotation speed of an engine of the work vehicle, actual rotation speed detection means that senses an actual rotation speed of the engine, a continuously variable speed change device that receives power from the engine of the work vehicle, speed change position detecting means for detecting a speed change operating position of the continuously variable speed change device, operating means for speed-shifting the continuously variable speed change device, and control means for controlling the operation of the operating means.

Abstract: A split torque transmission for a track type machine includes an internal combustion engine configured to drive a hydrostatic transmission and a mechanical transmission. The hydrostatic transmission includes a variable displacement pump drivingly connected with the internal combustion engine, and a variable displacement motor fluidly connected with the variable displacement pump and having a hydrostatic transmission output. The mechanical transmission has a forward and reverse mechanism drivingly connected with the internal combustion engine. A single stage unconventional planetary gear set is selectively coupled with the hydrostatic transmission output, the forward and reverse mechanism, and a final output, and is configured to sum outputs of the hydrostatic transmission and the mechanical transmission.

Abstract: A transmission device for a vehicle (1) having a variator (3), which is configured as a hydrostatic device, of a transverse axial construction that can be adjusted at least in the region of a pivot axis (11), a planetary gear set (4) and a manual gear unit (9). The orientation of the pivot axis (11) of the variator (3), following installation in the vehicle, at least approximately corresponds to the orientation of a vehicle vertical axis (16).

Abstract: A hybrid transmission is configured to transfer mechanical power to an output member and includes an input member, an output member, and a transmission case circumscribing first and second differential gear sets, each differential gear set including a plurality of meshingly engaged rotatable elements. The first differential gear set is configured with four nodes for transferring mechanical power, and the second differential gear set is configured with three nodes for transferring mechanical power. Two of the four nodes of the first differential gear set are continuously interconnected to two of the three nodes of the second differential gear set. A first torque transfer clutch is configured to selectively connect the input member to an internal combustion engine. First and second brake devices are configured to selectively interconnect elements of the first and second differential gear sets, the transmission case, the input member, and the output member.

Abstract: Disclosed is an apparatus including a stepless speed change device receiving an engine drive; a planetary transmission device for, by a plurality of planetary transmission mechanisms, combining an output from the stepless speed change device and the engine drive not subject to a speed change by the stepless speed change device; and a speed range setting device for outputting the drive combined by the planetary transmission device and divided into a plurality of speed ranges. The planetary transmission device, the speed range setting device and a forward-reverse changeover device are located forwardly of a rear end of an upstream transmission case portion. An electric motor may be used instead of the stepless speed change device.

Abstract: An infinitely variable hydromechanical crossdrive steering transmission having a multiple of forward and reverse ratio ranges and a separately selectable low ratio range in both forward and reverse. The forward and reverse ratio ranges are enabled to shift between ratio ranges in a synchronous manner in both speed and torque, thus smoothly propelling the vehicle from rest through the multiple transmission ranges to maximum speed in a stepless manner.

Abstract: A retrofit kit for an Allison transmission for converting a standard Allison Transmission into a variable speed hybrid using external pressure. The retrofit kit for an Allison transmission includes a main housing; gear sets being disposed in the main housing and including rotational members; clutches being in operable communication to the gear sets; a hydrostatic pump being in operable communication to at least one of the rotational members and having ports; and a fluid circuit being in fluid communication to the hydrostatic pump through the ports and to at least one of the clutches.

Abstract: A hydrostatically power-splitting transmission (10), particularly for agricultural and construction equipment, comprises at least two hydrostats (H2), which are hydraulically connected to each other and operate as pumps or as motors, wherein at least one of the hydrostats (H2) can be adjusted or pivoted by means of a controller (16, 20, 21; SK1, . . . SK4), mechanical coupling means (K1, K2; Z1, . . . , Z12), which couple the hydrostats (H1, H2) to an inner drive shaft (W1) and an inner driven shaft (W7), a housing (14, 31) comprising a cover (14) and a housing bottom part (31), wherein the hydrostats (H1, H2), the inner drive and driven shafts (W1, W7), and the mechanical coupling means (Z7, Z9) are disposed and attached on the bottom of the cover (14), and in the lower housing part an outer drive shaft accessible from the outside and a driven shaft are supported, which are operatively connected to the inner drive shaft or driven shaft when the housing is assembled.

Abstract: A variable ratio drive assembly (10) including: a planetary gear device (13) having an input shaft (15), an output shaft (17), with the shafts having a common rotational axis (21), an input gear (16) attached to the input shaft, an output gear (18) attached to the output shaft, a carriage (20) mounted for rotation about said axis, at least one planetary gear (19) meshed with the input gear and output gear, the planetary gear being rotatably mounted in the carriage, a ring gear (23) fixed to the carriage so as to be rotated about said axis, a pump gear (24) meshingly engaged with the ring gear, a pump device (51) drivingly connected to the pump gear and restriction means to control the flow so that said pump device (51) applies a torque to said pump gear to control rotation of said ring gear and therefore rotation of said output shaft.

Abstract: A hydraulic motor assembly having a motor, gear reduction set and axle disposed in a housing is disclosed. A brake assembly may be mounted externally to the axle housing portion of the assembly to provide braking for the output axle. The housing may be formed of separate components, including the axle housing portion, an external surface of a ring gear and a hydraulic motor port block.

Abstract: A continuously variable transmission for a hydraulic mechanism in hybrid cars with recovered power-split energy mainly comprises a multi-function planet differential gear train pump and a hydraulic variable pump (motor) of through shaft. The planet differential gear train pump provides a hydraulic constant pump, and a planet gear system thereof provides a speed-adjustable function as well as a speed-collecting function. Thereby, the planet differential gear train pump of the present invention is used to substitute the conventional planet gear system and the hydraulic constant pump in the continuously variable transmission. A power input shaft or a power output shaft of the hydraulic variable pump and the planet differential gear train pump are coaxially connected for uniaxially arranging the continuously variable transmission with the hydraulic mechanism power-split energy.

Abstract: A stepper motor suitable for use in a medical imaging environment has (a) a cylindrical central gear having an external surface with circumferentially distributed and radially directed teeth, (b) a shaft for mounting the central gear such that it is constrained to move in rotational motion about its centerline, (c) a cylindrical hoop gear having a bore with an internal surface having circumferentially distributed and radially directed teeth, (d) level arm crank mechanisms for mounting the hoop gear such that it is constrained to move in translational-circular motion about the central gear's centerline, wherein this central gear is further configured to fit within the hoop gear's bore in such a manner that a plurality of the central gear and hoop gear teeth intermesh and cooperate so that the planetary movement of the hoop gear causes the central gear to rotate, and (e) piston mechanisms for applying a fluid pressure driven force to specified points on the hoop gear so as to cause its movement.