Hydromechanical transmission for agricultural tractors

Details Hydromechanical transmission for agricultural tractors Hydromechanical transmission for agricultural tractors

2004-08-13

2008-12-16

Ho, Ha D. (Department: 3681)

Planetary gear transmission systems or components

Fluid drive or control of planetary gearing

Pump and motor in series with planetary gearing

C475S072000, C475S080000

Reexamination Certificate

active

07465245

ABSTRACT:
The transmission comprises: an input shaft coupled to a prime mover of the tractor; an output shaft; a hydrostatic unit including a pump driven by the prime mover shaft and a motor driven by the pump; an epicyclic torque splitter unit, including a first and a second input shaft and a first and a second output shaft, the rotational speeds of the first and second output shafts varying, respectively, in a first and a second range adjacent to each other as the rotational speed of the first input shaft varies between a maximum value and a minimum value; a clutch unit, arranged to couple the output shaft of the transmission selectively to the first or second output shaft of the torque splitter unit to provide a pair of forward operating ranges, at high and low speed respectively; and a reversing unit, arranged to provide a reverse operating range.

REFERENCES:
patent: 3855879 (1974-12-01), DeLalio
patent: 3861240 (1975-01-01), Nolan et al.
patent: 6663525 (2003-12-01), McKee et al.
patent: 6984172 (2006-01-01), Talbi et al.
patent: 7063638 (2006-06-01), Weeramantry
patent: 10122 823 (2002-11-01), None
patent: 0 577 282 (1994-01-01), None
patent: 1 181 526 (1970-02-01), None
patent: 02046350 (1990-02-01), None
International Search Report re application No. PCT/EP2004/009120, dated Nov. 4, 2004.
Written Opinion re international application No. PCT/EP 2004/009120, dated Nov. 4, 2004.

Affiliated with

Also associated with

Rating

Hydromechanical transmission for agricultural tractors does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Hydromechanical transmission for agricultural tractors, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Hydromechanical transmission for agricultural tractors will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4034157