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US 8,783,952 B1Granted
Journal bearing sleeve
AssigneeHamilton Sundstrand Corporation
InventorsCraig M. Beers, Darryl A. Colson
Life of this patent
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Abstract
A journal bearing including a cylindrical sleeve structure has an anti-rotation slot for receiving a portion of a foil layer. The anti-rotation slot extends radially into the cylindrical sleeve structure, relative to an axis defined by the cylindrical sleeve structure, from said inner diameter surface.
Claims18
A journal bearing sleeve comprising:
- a cylindrical sleeve structure having an inner diameter surface and an outer diameter surface, wherein said cylindrical sleeve structure defines an axis;
- an anti-rotation slot extending radially into said cylindrical sleeve structure, relative to said axis, from said inner diameter surface;
- said cylindrical sleeve structure has a first axial end and a second axial end, and said outer diameter surface is chamfered at said second axial end;
- and
- wherein a ratio of an inner diameter of said cylindrical sleeve structure to an axial slot length of said anti-rotation slot is in the range of 2.0245:1.630-2.0235:1.640.
2 more elements
A journal bearing assembly comprising:
- a cylindrical bearing sleeve having a cylindrical sleeve structure with an inner diameter surface and an outer diameter surface, wherein said cylindrical sleeve structure defines an axis, an anti-rotation slot extending radially into said cylindrical sleeve structure, relative to said axis, from said inner diameter surface, and said cylindrical sleeve structure has a first axial end and a second axial end, and said outer diameter surface is chamfered at said second axial end;
- a foil layer adjacent said inner diameter surface, wherein said foil layer has at least a first waved foil sub-layer and a second smooth foil sub-layer, and wherein a portion of said foil layer is received in said anti-rotation slot, thereby preventing said foil layer from rotating;
- and
- wherein a ratio of an outer diameter of said cylindrical sleeve structure to an axial slot length of said anti-rotation slot is in the range of 2.2505:1.630-2.2495:1.640.
1 more element
A method of installing a journal bearing, comprising the steps of:
- positioning a foil layer adjacent an inner surface of a journal bearing sleeve such that a portion of said foil layer is received in an anti-rotation slot of said journal bearing sleeve;
- and
- receiving a shaft in an opening of said journal bearing defined by an inner diameter of said journal bearing sleeve, wherein said shaft is sized to fit said opening, and wherein a ratio of an axial slot length of said anti-rotation slot to a radial anti-rotation slot depth of said anti-rotation slot is in the range of 1.630:1.105-1.640:1.095.
Dependencies are inferred from the claim text.