Neutral shifting mechanism for hydrostatic transmission

Details Neutral shifting mechanism for hydrostatic transmission Neutral shifting mechanism for hydrostatic transmission

1990-02-22

1991-08-27

Look, Edward K.

Power plants

Pressure fluid source and motor

Input pump and rotary output motor system having...

60489, 60490, 91497, 91498, 417221, F16D 3900

Patent

active

050422529

ABSTRACT:
The present invention is a neutral shifting mechanism for a hydrostatic transmission. A motor track ring has a groove and cam slot for receiving a control rod of the transmission, with the control rod having a cam portion for engaging the cam slot to lock the track ring in a position concentric with the pintle of the hydraulic motor, i.e. a neutral position. In the normal position, the cam portion positions the track ring eccentrically, allowing a speed control shaft to shift the hydrostatic transmission by pivoting the pump track ring about the control rod.

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