Abstract: An axle driving unit having a housing (21, 22) for supporting a first axle (17) for mounting thereon a first driving wheel (3L), and a longer second axle (18) for mounting thereon a second driving wheel (3R). The axle driving unit is eccentrically mounted on a body frame (1) in proximity to the first driving wheel (3L). A speed change transmission (T) is disposed in an enlarged region of the housing that extends substantially perpendicularly with respect to the axles (17, 18). The axle driving unit can thus be easily disposed to the side of a chute (6) of a rear-discharge type lawn tractor.

Abstract: A driving apparatus for speed changing and steering of a vehicle consists of a first driving unit for speed changing in advancing and reversing and a second driving unit for steering, which are arranged in a longitudinal row and are attached to a vehicle chassis. Each of the first driving unit and the second driving unit has a common structure, which comprises a housing and an HST and left and right differential output shafts contained in the housing. A left first differential output shaft and a left second differential output shaft are connected with each other so as to be rotated in the same direction, and a right first differential output shaft and a right second differential output shaft are connected with each other so as to be rotated in opposite directions. Both first and second HSTs of the first driving unit and a second driving unit receives power from engine through a common single belt.

Abstract: A driving apparatus for speed changing and steering of a vehicle consists of a first driving unit for speed changing in advancing and reversing and a second driving unit for steering, which are arranged in a longitudinal row and are attached to a vehicle chassis. Each of the first driving unit and the second driving unit has a common structure, which comprises a housing and an HST and left and right differential output shafts contained in the housing. A left first differential output shaft and a left second differential output shaft are connected with each other so as to be rotated in the same direction, and a right first differential output shaft and a right second differential output shaft are connected with each other so as to be rotated in opposite directions. Both first and second HSTs of the first driving unit and a second driving unit receives power from engine through a common single belt.

Abstract: A driving apparatus for speed changing and steering of a vehicle consists of a first driving unit for speed changing in advancing and reversing and a second driving unit for steering, which are arranged in a longitudinal row and are attached to a vehicle chassis. Each of the first driving unit and the second driving unit has a common structure, which comprises a housing and an HST and left and right differential output shafts contained in the housing. A left first differential output shaft and a left second differential output shaft are connected with each other so as to be rotated in the same direction, and a right first differential output shaft and a right second differential output shaft are connected with each other so as to be rotated in opposite directions. Both first and second HSTs of the first driving unit and a second driving unit receives power from engine through a common single belt.

Abstract: A driving apparatus for speed changing and steering of a vehicle consists of a first driving unit for speed changing in advancing and reversing and a second driving unit for steering, which are arranged in a longitudinal row and are attached to a vehicle chassis. Each of the first driving unit and the second driving unit has a common structure, which comprises a housing and an HST and left and right differential output shafts contained in the housing. A left first differential output shaft and a left second differential output shaft are connected with each other so as to be rotated in the same direction, and a right first differential output shaft and a right second differential output shaft are connected with each other so as to be rotated in opposite directions. Both first and second HSTs of the first driving unit and a second driving unit receives power from engine through a common single belt.

Abstract: A hydrostatic transaxle having a hydrostatic transmission module including a transmission housing, a rotating fluid pump and a rotatable fluid motor, the pump being of variable displacement, the motor being rotated at various speeds and in forward and reverse directions in response to changes in pump displacement; an axle drive unit including a housing and a speed reduction gear train having an input and an output disposed in the axle drive housing, the motor being operably coupled to the gear train input; a differential assembly having a rotating casing, the rotating casing being external to the transmission housing and axle drive unit housing; and a pair of axles extending from the differential assembly casing.

Abstract: A drive mechanism for driving a vehicle, comprising a pair of drive wheels each having a drive shaft, a source of hydraulic oil under pressure on the vehicle and controlled by a control unit for delivering hydraulic oil in two directions, wherein the drive shafts of the pair of wheels are each driven by a high torque, low speed hydraulic motor or pump. The principal components of the motors include a crank shaft mounted in the housing for connection to the drive shafts of the wheels. At least two cylinder and piston assemblies are attached to the crank shaft for rotation of the crank shaft upon movement of the pistons between a minimum and maximum point of travel in the cylinders to thereby impart motion to the wheel drive shaft. A valve assembly provides hydraulic fluid to the cylinders to sequentially move the pistons in the desired direction of piston travel. The two motors are mounted on the vehicle to form a transaxle unit, and controls permit simultaneous or independent operation of the two motors.

Abstract: A driving apparatus (2) for speed changing and steering of a vehicle consists of a first driving unit (21) for speed changing in advancing and reversing and a second driving unit (22) for steering, which are arranged in a longitudinal row and are attached to a vehicle chassis (12). Each of the first driving unit (21) and the second driving unit (22) has a common structure, which comprises a housing and an HST and left and right differential output shafts contained in the housing. A left first differential output shaft (40L) and a left second differential output shaft (44L) are connected with each other so as to be rotated in the same direction, and a right first differential output shaft (40R) and a right second differential output shaft (44R) are connected with each other so as to be rotated in opposite directions. Both first and second HSTs of the first driving unit (21) and a second driving unit (22) receives power from engine (11) through a common single belt (30).

Abstract: A driving apparatus (2) for speed changing and steering of a vehicle consists of a first driving unit (21) for speed changing in advancing and reversing and a second driving unit (22) for steering, which are arranged in a longitudinal row and are attached to a vehicle chassis (12). Each of the first driving unit (21) and the second driving unit (22) has a common structure, which comprises a housing and an HST and left and right differential output shafts contained in the housing. A left first differential output shaft (40L) and a left second differential output shaft (44L) are connected with each other so as to be rotated in the same direction, and a right first differential output shaft (40R) and a right second differential output shaft (44R) are connected with each other so as to be rotated in opposite directions. Both first and second HSTs of the first driving unit (21) and a second driving unit (22) receives power from engine (11) through a common single belt (30).

Abstract: A driving apparatus (2) for speed changing and steering of a vehicle consists of a first driving unit (21) for speed changing in advancing and reversing and a second driving unit (22) for steering, which are arranged in a longitudinal row and are attached to a vehicle chassis (12). Each of the first driving unit (21) and the second driving unit (22) has a common structure, which comprises a housing and an HST and left and right differential output shafts contained in the housing. A left first differential output shaft (40L) and a left second differential output shaft (44L) are connected with each other so as to be rotated in the same direction, and a right first differential output shaft (40R) and a right second differential output shaft (44R) are connected with each other so as to be rotated in opposite directions. Both first and second HSTs of the first driving unit (21) and a second driving unit (22) receives power from engine (11) through a common single belt (30).

Abstract: An engine and a motor are connected to the drive wheels of a vehicle via an automatic transmission. The drive wheels are driven using one of or both of the motor and the engine depending on the running state. The automatic transmission varies the drive ratio by the discharge pressure of the oil pressure pump. The oil pressure pump is driven by a second motor. When the automatic transmission is varying the drive ratio, the discharge of the oil pressure pump is increased by increasing the rotational speed of the second motor and thus the required oil for varying the drive ratio is maintained.

Abstract: A splitter gearbox for a four wheel drive, hydrostatically driven tractor integrates both the input drive train and the output drive train into a single gearbox. The drive mechanism eliminates the need for a separate mechanical gearbox by establishing pre-set fixed displacement settings that are electronically controlled along with the variable displacement of the hydrostatic motor and hydrostatic pump, to provide a smooth power shift through all ranges without requiring the tractor to stop. The drive mechanism is configured so that essentially all components are individually controlled so that the entire power generated by the tractor engine can be diverted to any one of the traction drive, the PTO mechanism, the auxiliary hydraulic drive or, to a somewhat lesser extent, the tractor hydraulic system. The splitter gearbox is mounted to the rear axle housing to allow the sharing of a common oil sump.

Abstract: A torque converting linkage (10) comprising two turbines, an impeller and a reactor (12 & 14), which rotate on shafts (16 & 18) within separate fluid-filled housings (20 & 22) is disclosed. Each housing (20 & 22) includes an outlet port and an inlet port (24 & 30, 28 & 26) which are coupled by two conduits (32 & 34). An external torque applied to shaft (16) turns the impeller turbine (12). Vanes (38) on the impeller turbine (12) force the fluid (36) out of the impeller housing (20) through a first conduit (34) into the reactor housing (22). The fluid (36) entering the reactor housing (22) acts on the vanes (38) of the reactor turbine (14), causing it to rotate and to transfer rotational energy to shaft (18).

Abstract: A method and system for a hydraulic drive for a vehicle wherein when one of the vehicle traction wheels is in a frictionless spin mode, then the hydraulic pressure is subjected to the action of the fuse which directs the pressure or increase in hydraulic flow to the remaining wheel or wheels for traction drive. The system can be used in either the forward or reverse drive mode.

Abstract: This invention relates to a hydrostatic axle for a lift truck comprising a frame, two displacement members coupled to motors and a mast for handling mounted to pivot with respect to said frame, this axle comprising two drive assemblies, right- and left-hand, each comprising a hydrostatic motor and a brake and being coupled to one of said displacement members. According to the invention, a) each of the motors is a slow motor coupled to the corresponding displacement member without the interposition of a speed reducer; b) the two motors and the two brakes are contained in a single resistant beam fixed on the frame of the list truck; and c) the handling mast is pivitally mounted on said beam via at least two pivot bearings. One application of the invetion is the economical production of a resistant lift truck.