Transmission for agricultural tractors

Details Transmission for agricultural tractors Transmission for agricultural tractors

1995-08-08

1997-03-25

Ta, Khoi Q.

Machine element or mechanism

Gearing

Interchangeably locked

74330, 74331, F16H 6128, F16H 6312

Patent

active

056134010

ABSTRACT:
A vehicle transmission presents a main stage and a range reducer cascade connected to each other. The main stage includes an input shaft, two drive shafts coaxial with each other and selectively connected to the input shaft by respective hydraulic clutches, a countershaft, and a driven shaft connectable to the countershaft according to a number of gear ratios. The countershaft is selectively connectable to one of the drive shafts directly or via an inverting train by means of a first synchronized clutch, and is selectively connectable to the other drive shaft according to a step-down ratio and a step-up ratio by means of a second synchronized clutch. The hydraulic clutches and first and second synchronized clutches are controlled by an electronic control unit in response to manual operation and in predetermined sequences.

REFERENCES:
patent: 3589483 (1971-06-01), Smith
patent: 4738149 (1988-04-01), Janiszewski

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