Abstract: A drive arrangement comprising a motor, a self engaging, double overrunning, bi-directional pump, and a wheel is usable in converting two wheel drive vehicles to four wheel drive vehicles.

Abstract: A drive arrangement comprising a power source driving a First shaft, a second shaft, and at least one double overrunning clutches mechanically connecting the first shaft to the second shaft. The double overrunning clutch is stacked in axial alignment around said first shaft and engage an interior surface of the second shaft such that torque from the first shaft can be selectively transmitted to the second shaft.

Abstract: A hydraulic drive circuit comprises a source of fluid flow, at least one hydraulic actuator and a rotary flow divider which operates in conjunction with valve means to provide intensified flow to the at least one hydraulic actuator.

Abstract: A hydraulic drive with a flow divider and a bypass wherein fluid can either be allowed to flow from a flow divider to hydraulic actuators in parallel or the fluid can be allowed to bypass the flow divider and flow directly to the hydraulic actuators in parallel.

Abstract: A hydraulic drive with regeneration circuit comprises a pump, a hydraulic actuator and a rotary flow divider which operates in conjunction with valve means to provide regeneration flow for the hydraulic drive.

Abstract: A hydraulic drive with regeneration circuit comprises a pump, a hydraulic actuator and a rotary flow divider which operates in conjunction with valve means to provide regeneration flow for the hydraulic drive.

Abstract: The hydrostatic drive with regeneration circuit comprises a geroter flow divider which operates in conjunction with a two position three way valve and a check valve to provide regeneration flow for the hydrostatic drive when the valve is energized.

Abstract: A multi-speed hydrostatic drive is disclosed. The drive comprises the combination of a drive unit having at least one output connectable to a motive member and at least first and second inputs. A clutch unit is connected to the first drive unit input, and a first fixed displacement hydraulic motor is connected to the clutch unit so as to drive the drive unit first input through the clutch when the clutch is engaged. A brake unit is connected to the second drive unit input. A second fixed displacement hydraulic motor is connected to the brake unit so as to drive the drive unit second input when the brake is disengaged. A variable displacement hydraulic pump is also provided. A hydraulic circuit delivers the pressurized fluid to the first and to the second hydraulic motors to provide a relatively low speed, high torque drive. Alternatively, the hydraulic circuit can be set to deliver pressurized fluid to the second motor only to provide a relatively high speed, low torque drive to the motive member.

Abstract: A hydraulic or fluid-power brake is disclosed. The brake comprises a stationary housing, and a rotor shaft journaled in the housing. A number of rotor discs are carried on the shaft for rotation therewith, but they are adapted for axial sliding motion on the shaft, as by a spline arrangement. A number of stator discs are interleaved with the rotor discs and are carried on torque pins mounted in the housing for sliding motion in the direction of the rotor shaft axis, but are secured against rotational movement with the rotor shaft and rotor discs. Biasing means such as springs urge the stator discs into braking engagement with the rotor discs. To relieve this braking action and permit free shaft rotation, a primary piston, having an annular skirt surrounding the rotor discs, engages one stator disc to apply a force urging that stator disc in a direction opposite to the force applied by the biasing means so as to release the braking action.

Abstract: An hydraulic clutch is provided, which is positively engaged by hydraulic means, and is disengaged by mechanical means. The clutch includes a male cone member carried for rotation on an input shaft, and for limited axial sliding movement therealong. Interconnection between the male cone member and the input shaft is provided by a series of elongated pins carried in recesses formed in the male cone member and in the input shaft. A female cone member, formed integrally with an output shaft, receives the male cone member for driving engagement. When engagement is desired, a fluid pressure piston and thrust plate urge the male cone member axially along the input shaft into driving engagement with the female cone member. A stop pin carried by the thrust plate engages an abutment for limiting the axial motion of the hydraulic piston and male cone member.

Abstract: A hydrostatic drive is disclosed in combination with a machine tool such as a sand core molding machine. A machine of this type comprises a fixed carriage and a core molding die mounted for rotation on the carriage. The drive includes a reversible fluid power motor having an output shaft. The motor output shaft is connected to a fail safe fluid power brake, and the brake shaft is, in turn, connected to a power transmission unit. When fluid power is applied to the brake and the motor, brake override means operate to release the brake to permit the motor shaft, brake shaft and tranmission to be turned by the motor and thereby operate the movable die.