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US 2004/0176207 A1Published application
Differential pinion having a grooved bore
OwnerChristopher J. Suydam, Gregory S. LeCompteinventors
Life of this patent
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Abstract
A pinion for a center differential or speed reduction assembly of a motor vehicle transfer case includes external gear teeth and an axial passageway defined by alternating grooves and lands. The grooves and lands may be either axial or helical. The grooves provide improved lubrication and debris removal among other features. The pinion is preferably a powdered metal part.
Claims20
A gear assembly comprising, in combination,
- an input member,
- a first output member,
- a second output member,
- a plurality of stub shafts,
- a plurality of gears disposed on respective said plurality of stub shafts and driven by said input member and driving said first and said second output members,
- a least one of said plurality of gears defining a through passageway having alternating lands and grooves.
3 more elements
A differential assembly comprising, in combination,
- a sun gear,
- a ring gear,
- a carrier disposed between said sun gear and said ring gear and having a plurality of shafts,
- a plurality of planet gears each disposed on a respective one of said plurality of shafts and engaging at least one of said sun gear and said ring gear,
- at least one of said plurality of planet gears having an internal bore defining a surface and a plurality of grooves disposed in said surface.
2 more elements
A differential assembly comprising, in combination,
- a rotating housing,
- a first side bevel gear driving a first output,
- a second side bevel gear driving a second output,
- a pair of idler bevel gears, each of said pair of bevel gears engaging both of said side bevel gears,
- at least one of said idler bevel gears having a bore and a bore surface defining a plurality of spaced apart grooves.
2 more elements
Dependencies are inferred from the claim text.