Parallel-axis differential gear tooth modification
US5310389A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Nov 17, 1992 |
| Grant date | May 10, 1994 |
| Priority date | — |
| Expiry date | Nov 17, 2012 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T74/19972
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A parallel-axis gear differential includes pairs of element gears (34) mounted within pockets (36) formed in a differential housing (10). Each element gear includes a first gear section (38) for meshing with one of two side gears (30 or 32), a second gear section (40) for meshing with the first gear section of its mating element gear, and a stem section (42 ) for interconnecting the first two gear sections. Associated with each pair of pockets are two passageways (44, 46) for providing respective paths for the flow of lubrication fluid between the exterior of the housing and the respective meshing gear sections (38, 40) of each pair of element gears (34). The profile of the teeth of the element gears is modified with a chamfer-like shape (58) at the intersection of the profile and the top lands of the teeth, the chamfer-like shape making an angle of 10.degree.-30.degree. with the top lands.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.