Lubrication system for a planetary gear set
US8425361B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 18, 2012 |
| Grant date | Apr 23, 2013 |
| Priority date | — |
| Expiry date | Jan 18, 2032 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16C2361/61
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
An assembly in a transmission of a motor vehicle for communicating lubrication oil to a bearing in a planetary gear set includes a planet carrier having a plate with an inner groove in communication with a slot of a bushing, a pinion hole, and a second passage that communicates between the inner groove and the pinion hole. The planet carrier further includes a pinion disposed within the pinion hole and a bearing disposed on the pinion for supporting a planetary gear. A groove is disposed in the pinion and is in communication with the second passage. A third passage extends from the groove into the pinion. A fourth passage extends from the third passage into the pinion along an axis of the pinion. A fifth passage extends from the fourth passage to the outer surface. Pressurized lubrication oil is communicated through the plate and pinion to the bearing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.