Hydromechanical transmission

  • US 20040242357A1
  • Filed: 04/29/2004
  • Published: 12/02/2004
  • Est. Priority Date: 05/27/2003
  • Status: Active Grant
First Claim
Patent Images

1. A hydromechanical transmission, comprising:

  • a driving source;

    a planetary gear speed reducer connected to said driving source;

    a variable displacement hydraulic pump, which is connected to said planetary gear speed reducer, and to which one part of an output force of said driving source is outputted;

    an output shaft, which is connected to said planetary gear speed reducer, and to which the other part of the output force of said driving source is outputted;

    a first variable displacement hydraulic motor receiving pressure oil from said variable displacement hydraulic pump and outputting a driving force to said output shaft;

    a second variable displacement hydraulic motor receiving the pressure oil from said variable displacement hydraulic pump and outputting a driving force to said output shaft; and

    a clutch placed between said second variable displacement hydraulic motor and said output shaft.

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