Power take-off drive gear thrust load canceling
AssigneeEaton Cummins Automated Transmission Technologies, LLC
InventorGraeme A. Jackson
Life of this patent
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Abstract
A transmission includes a countershaft, an input shaft and a clutch that couples the input shaft to the countershaft, a main transmission assembly having a main shaft and a main transmission clutch, the main shaft coupled to the countershaft via the main transmission clutch, and a range gear assembly. The transmission includes a power take-off shaft coupled to an axial end of the countershaft and colinear therewith, wherein the power take-off shaft and the countershaft are rotationally coupled to one another and axially decoupled from one another.
Claims10
A transmission, comprising:
- a countershaft;
- an input shaft and a clutch that couples the input shaft to the countershaft;
- a main transmission assembly having a main shaft and a main transmission clutch, the main shaft coupled to the countershaft via the main transmission clutch;
- a range gear assembly;
- and
- a power take-off shaft coupled to an axial end of the countershaft and co-linear therewith, wherein the power take-off shaft and the countershaft are rotationally coupled to one another and axially decoupled from one another by a spline joint, further comprising a thrust bearing coupled to the power take-off shaft, the thrust bearing positioned at an end of the power take-off shaft that is opposite an end of the power take-off shaft where the spline joint is positioned.
A transmission, comprising:
- two countershafts;
- an input shaft and a clutch that couples the input shaft to the two countershafts;
- a main transmission assembly having a main shaft and a main shaft clutch, the main shaft coupled to the two countershafts via the main shaft clutch;
- a range gear assembly;
- and
- a power take-off shaft coupled to an axial end of one of the two countershafts and co-linear therewith, wherein the power take-off shaft and the one countershaft are rotationally coupled to one another and axially decoupled from one another by a spline joint, further comprising a thrust bearing coupled to the power take-off shaft, the thrust bearing positioned at an end of the power take-off shaft that is opposite an end of the power take-off shaft where the spline joint is positioned.
A transmission, comprising:
- a main transmission assembly having a main shaft and a main shaft clutch, the main shaft coupled to a countershaft via a main shaft clutch;
- a planetary gear assembly having a center shaft that provides output from the transmission, the planetary gear assembly further including an annulus gear, a sun gear, and a planet gear;
- and
- a power take-off shaft coupled to an axial end of the countershaft and co-linear therewith, wherein the power take-off shaft and the countershaft are rotationally coupled to one another and axially decoupled from one another, further comprising a thrust bearing coupled to the power take-off shaft, the thrust bearing positioned at an end of the power take-off shaft that is opposite an end of the power take-off shaft where a spline joint connects the power take-off shaft to the countershaft.
Dependencies are inferred from the claim text.