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US 8,986,146 B2Granted
Reduction gear with epicyclic gear train having roller-bearing-mounted planet spindles
AssigneeSnecma
InventorFrancois Gallet
Life of this patent
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Abstract
A reduction gear with epicyclic gear train including an annulus gear, and at least one planet gear rolling on the annulus gear and able to rotate about a planet spindle borne by a planet carrier is provided. The planet spindle is mounted such that it can itself rotate about its axis relative to the planet carrier. The reduction gear is suitable for mounting in a high bypass ratio jet engine for driving the fan thereof.
Claims10
A reduction gear with epicyclic gear train comprising:
- an annulus gear;
- and
- at least one planet gear rolling on said annulus gear and able to rotate about a planet spindle borne by a planet carrier, said planet spindle being mounted such that said planet spindle can itself rotate about its axis relative to said planet carrier,
- wherein there are two modes of operation:
- a first mode in which said planet spindle is rigidly attached to the planet carrier and a second mode in which said planet spindle can rotate freely relative to the planet carrier.
2 more elements
Dependencies are inferred from the claim text.