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US 9,022,893 B2Granted
Hypoid gear set for drive axle
AssigneeArvinMeritor Technology, LLC
InventorsWagner Yukio Hirao, I-Chao Chung, Tomaz Dopico Varela, Silvio M. Yamada
Life of this patent
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Abstract
A hypoid gear set for a vehicle drivetrain includes a pinion gear in meshing engagement with a ring gear. The hypoid gear set has a negative pinion offset. The hypoid pinion and ring gears provide a predetermined gear ratio that can be varied up to a fifty percent faster ratio within a single carrier packaging envelope defined by a maximum ring gear diameter.
Claims9
A vehicle axle comprising:
- a hypoid pinion gear having a first number of spiral gear teeth and an outer diameter;
- and
- a hypoid ring gear having a pinion gear engagement side with a second number of spiral gear teeth and a pitch diameter wherein the spiral gear teeth of the ring gear are in meshing engagement with the spiral gear teeth of the pinion gear, wherein a ratio of the pitch diameter to the outer diameter is greater than a ratio of the second number to the first number, and
- wherein when viewing the pinion gear engagement side of the ring gear with the pinion gear to the right of a ring gear vertical axis, the pinion gear engages the ring gear in a manner selected from the group consisting of:
- (a) the pinion gear is offset below a horizontal axis of the ring gear and the pinion gear spiral gear teeth are right-handed;
- and
- (b) the pinion gear is offset above the horizontal axis of the ring gear and the pinion gear spiral gear teeth are left-handed.
4 more elements
Dependencies are inferred from the claim text.