Patent ID: 9382990
Filing Date: 2016-07-05
CPC Classification: F16H

Claim Text:
1. A helical limited slip differential, comprising: a case defining an inner cavity and a plurality of grooves disposed around the inner cavity, wherein the case defines a first case end and a second case end opposite to the first case end; a plurality of pinion gears, wherein each of the pinion gears is disposed in one of the grooves, each of the plurality of pinion gears includes a plurality of gear teeth, each of the pinion gears has a first end surface and a second end surface opposite the first end surface, and each of the gear teeth has a top land; at least one helical output gear disposed in the inner cavity, wherein the at least one helical output gear meshes with the pinion gears, and the pinion gears are disposed around the at least one helical output gear; a cap coupled to the first case end, wherein the cap defines an inner cap surface, the inner cap surface faces the at least one helical output gear, the first end surface of each of the pinion gears faces the inner cap surface, the inner cap surface has a surface profile, the surface profile is characterized by raised portions and indentations, and the raised portions are circular protrusions; and wherein the top land of each of the gear teeth has the surface profile.