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US 7,581,889 B2Granted
Integral tandem bearing for high speed flexible shafts
AssigneePratt & Whitney Canada Corp.
InventorsVittorio Bruno, Edward Dusza, Michel Labbe, Tibor Urac
Life of this patent
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Abstract
An integral tandem bearing assembly for supporting a main shaft in a gas turbine engine is provided. The tandem bearing assembly comprises two bearing assemblies connected by integrated inner ring.
Claims25
An integral tandem bearing assembly for supporting a fan shaft in a gas turbine engine, the tandem bearing assembly comprising:
- a first bearing assembly with an out-of-round outer race;
- a second bearing assembly with circular races;
- and
- a common inner ring assembly at least partially defining inner races or both the first and second bearing assemblies.
1 more element
A integral tandem bearing assembly for supporting a fan shaft of a gas turbine engine, the tandem bearing assembly comprising:
- a roller bearing assembly having an outer ring;
- a ball bearing assembly having an outer ring separate from the outer ring of the roller bearing assembly;
- and
- a common inner ring assembly at least partially defining inner races for both the roller and ball bearings assemblies.
1 more element
An integral tandem bearing assembly for supporting a fan shaft in a gas turbine engine, the tandem bearing assembly comprising:
- two bearing assemblies having respective outer ring separate from one another;
- an oil slinger integrated with at least one of the two bearing assemblies;
- and
- a common inner ring mounted on the shaft and defining a spacer integral therewith, thereby connecting the two bearing assemblies.
1 more element
Dependencies are inferred from the claim text.