Hydrostatic transmission having a hydraulic dampening and neutral bleed mechanism

A hydrostatic transmission including a fluid motor in communication with a variable displacement fluid pump having a first displacement rate and a second greater displacement rate, a pump block having at least one fluid conduit through which fluid flows from the pump to the motor, an external fluid...

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Hauptverfasser: WILLIAMS DOUGLAS G, COX C. PAUL
Format: Patent
Sprache:eng
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Beschreibung
Zusammenfassung:A hydrostatic transmission including a fluid motor in communication with a variable displacement fluid pump having a first displacement rate and a second greater displacement rate, a pump block having at least one fluid conduit through which fluid flows from the pump to the motor, an external fluid sump, a cylindrical pintle fixed to the block having a first bleed hole and a second bleed hole in communication with the first bleed hole, and a ring in sliding engagement with the pintle and having a slot in selective communication with the second bleed hole. The conduit and the sump are in communication through the bleed holes and the slot at the first displacement rate, and the fluid conduit and the sump are out of fluid communication at the second displacement rate.