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Entrained air deflector for a hydrostatic transmission

  • US 10,281,035 B2
  • Filed: 03/28/2017
  • Issued: 05/07/2019
  • Est. Priority Date: 03/28/2017
  • Status: Active Grant
First Claim
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1. A hydrostatic transmission for a working machine having a frame, an engine on the frame, and at least one wheel driven by the hydrostatic transmission, comprising:

  • a housing;

    a hydraulic pump, the hydraulic pump driven by an output shaft from the engine;

    a hydraulic motor for driving an output shaft connected to the at least one wheel;

    a first fluid line fillable with hydraulic fluid to be maintained under a first pressure;

    a second fluid line fillable with hydraulic fluid to be maintained under a second pressure;

    a first check valve for allowing hydraulic fluid to enter the first fluid line;

    a second check valve for allowing hydraulic fluid to enter the second fluid line; and

    an entrained air deflector for preventing hydraulic fluid entrained with air from entering the first check valve and the second check valve, the entrained air deflector comprising;

    a floor, the floor having an outer edge, the floor being positioned beneath the first check valve and the second check valve; and

    a wall extending perpendicularly upward from the outer edge of the floor, the wall radially surrounding the first check valve and the second check valve.

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