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US 8,985,277 B2Granted
Case with integral lubricant scavenge passage
AssigneeUnited Technologies Corporation
InventorsCurt R. Hetherington, Stephen H. Mattia, Bradley J. Sabo
Life of this patent
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Abstract
A case comprises a radially inner case hub, a radially outer case section with an outer wall, a plurality of circumferentially distributed struts extending radially between the inner hub and the outer case section, and a lubricant scavenge passage disposed circumferentially apart from a bottom dead center (BDC) position of the case. The lubricant scavenge passage includes an inner scavenge section extending radially through a first one of the plurality of struts.
Claims25
A case comprising:
- a radially inner case hub;
- a radially outer case section with an outer wall;
- a plurality of circumferentially distributed struts extending radially between the inner hub and the outer case section;
- and
- a lubricant scavenge passage disposed circumferentially apart from a bottom dead center (BDC) position of the case, the lubricant scavenge passage including an inner scavenge section extending radially through a first one of the plurality of struts;
- an inner port including an oil scoop having an entrance along the inner surface of the inner case hub, the entrance oriented tangentially away from the BDC case position.
3 more elements
A lubricant scavenge passage comprising:
- an inlet scoop formed on a radially inner case wall;
- a scavenge outlet port disposed outward of a radially outer case wall;
- an inner scavenge section extending between the inlet scoop and the outer case wall;
- and
- an outer scavenge section in fluid communication with the inner scavenge section, the outer scavenge section extending between the outer case wall and the scavenge outlet port, the lubricant scavenge passage disposed circumferentially apart from a bottom dead center (BDC) position of the case.
2 more elements
Dependencies are inferred from the claim text.