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US 11,624,398 B2Granted
Input shafts for generators
AssigneeHamilton Sundstrand Corporation
InventorsCraig J. Wojcik, Ted A. Martin, Duane C. Johnson
Life of this patent
Estimating the term…
Abstract
An input shaft includes an annular main shaft extending along a longitudinal axis with an internal bore configured for fluid flow through the annular main shaft. A generator spline is included on an exterior surface of a first end of the main shaft. A gearbox spline is included on an exterior surface of a second end of the main shaft opposite the first end. At least one orifice is defined through the main shaft from the internal bore to the exterior surface of the second end of the main shaft for flow of fluid from the internal bore to the exterior surface for cooling and lubrication.
Claims18
A method comprising:
- lubricating a gearbox spline on an outer surface of an input shaft using oil driven through an internal bore defined through the input shaft, wherein the oil passes through at least one orifice defined through the input shaft from the internal bore to an exterior surface of the input shaft, wherein the input shaft comprises:
- an annular main shaft extending along a longitudinal axis with the internal bore configured for fluid flow through the annular main shaft;
- a generator spline on a first exterior surface of a first end of the annular main shaft;
- and
- a gearbox spline on a second exterior surface of a second end of the annular main shaft opposite the first end, wherein at least one orifice is defined through the annular main shaft from the internal bore to the exterior surface of the second end of the annular main shaft for flow of fluid from the internal bore to the exterior surface for cooling and lubrication, wherein the gearbox spline has an axial length with a ratio of 0.16 to 1 relative to that of the main shaft.
2 more elements
A method comprising:
- lubricating a gearbox spline on an outer surface of an input shaft using oil driven through an internal bore defined through the input shaft, wherein the oil passes through at least one orifice defined through the input shaft from the internal bore to an exterior surface of the input shaft, wherein the input shaft comprises:
- an annular main shaft extending along a longitudinal axis with the internal bore configured for fluid flow through the annular main shaft;
- a generator spline on a first exterior surface of a first end of the annular main shaft;
- and
- a gearbox spline on a second exterior surface of a second end of the annular main shaft opposite the first end, wherein at least one orifice is defined through the annular main shaft from the internal bore to the exterior surface of the second end of the annular main shaft for flow of fluid from the internal bore to the exterior surface for cooling and lubrication, wherein the gearbox spline has a pitch diameter with a ratio of 1.33 to 1 relative to that of the generator spline.
2 more elements
A method comprising:
- lubricating a gearbox spline on an outer surface of an input shaft using oil driven through an internal bore defined through the input shaft, wherein the oil passes through at least one orifice defined through the input shaft from the internal bore to an exterior surface of the input shaft, wherein the input shaft comprises:
- an annular main shaft extending along a longitudinal axis with the internal bore configured for fluid flow through the annular main shaft;
- a generator spline on a first exterior surface of a first end of the annular main shaft;
- and
- a gearbox spline on a second exterior surface of a second end of the annular main shaft opposite the first end, wherein at least one orifice is defined through the annular main shaft from the internal bore to the exterior surface of the second end of the annular main shaft for flow of fluid from the internal bore to the exterior surface for cooling and lubrication, wherein the internal bore includes a step up in diameter, wherein the internal bore has a larger diameter inboard of the gearbox spline than inboard of the generator spline.
2 more elements
Dependencies are inferred from the claim text.