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US 2011/0299974 A1Published application
Lubricating and cooling epicyclic stepdown gearing
AssigneeSnecma
InventorsGerard Philippe Gauthier, Serge Rene Morreale
Life of this patent
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Abstract
A lubricating and cooling epicyclic stepdown gearing, for example in an aeroengine turbomachine, including a cylindrical casing mounted on a planet-carrier of the gearing and forming a centrifugal scoop surrounding stationary oil-delivery strips, the cylindrical casing including radial ducts feeding nozzles pointing towards zones where the planet gears mesh with outer ring(s) of the gearing.
Claims9
1-8. (canceled)
An epicyclic stepdown gearing comprising:
- a central gear;
- an outer ring;
- planet gears meshing with the central gear and with the outer ring, the planet gears being mounted to rotate freely on a planet-carrier;
- and
- lubricating and cooling means operating by spraying oil onto sets of teeth and onto axes of the planet gears,
- wherein the lubricating and cooling means comprises a cylindrical casing secured to the planet-carrier and forming a scoop for recovering oil, which casing surrounds stationary means for delivering oil.
3 more elements
Dependencies are inferred from the claim text.