Parker-Hannifin Corporation

Stephen Daniel Horsfall

John Loeffler

Joseph A Kovach

Blake Adam Carl

A power take off device includes input and output shafts and an integral planetary gear set. The power take off device may be a single speed or a multi-speed device. The input shaft and the output shaft are mechanically connected through the planetary gear set. The output shaft may be driven in a forward direction and/or may be driven in a reverse direction. For example, the output shaft may be driven with a speed reduction, a speed increase, or at a 1:1 ratio with the input shaft.

Planetary power take off device

A power take off device that includes a clutch that is engaged by a pressure operated actuator. The pressure operated actuator may be a two directional fluid pressure operated actuator that selectably engages the clutch. A single input signal may operate the two directional fluid pressure operated actuator in both directions. In one mode of operation of the power take off device, a substantial speed reduction and torque increase is provided between the input shaft and the output shaft to start rotating the blower and to overcome the inertial start up resistance of the blower. The power take off device may change to a second mode of operation without stopping to provide a direct one to one speed and torque ration between the input shaft and the output shaft.

A power take off device includes input and output shafts and an integral planetary gear set. The power take off device may be a single speed or a two speed device. The input shaft and the output shaft are mechanically connected through the planetary gear set. In one mode of operation of the power take off device, a substantial speed reduction and torque increase is provided between the input shaft and the output shaft. The power take off device may change to a second mode of operation without stopping to provide a direct one to one speed and torque ratio between the input shaft and the output shaft. A planetary gear set clutch unit includes a two direction actuator that provides fluid pressure actuation and release of the clutch unit with a single input signal.

A powersplit transmission having a compact configuration that readily can be incorporated in a vehicle, particularly within the vehicle frame, includes (a) a mechanical transmission having a rotatable input shaft, a rotatable output shaft, and multiple gears for mechanically transmitting power between the input shaft and the output shaft; and (b) a hydraulic transmission containing a fluid for transmitting power between the input shaft and the output shaft. The mechanical transmission has a housing from which the input shaft and the output shaft extend. The hydraulic transmission includes first and second hydraulic units, each of which can function as a pump or a motor. The first hydraulic unit is coupled to the mechanical transmission system and the second hydraulic unit is coupled to the output shaft. The first and second hydraulic units are offset to the same side of the input shaft and the output shaft.

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Auckland, New Zealand

Stephen Daniel Horsfall