Transfer case with overdrive/underdrive shifting
US7172528B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 5, 2004 |
| Grant date | Feb 6, 2007 |
| Priority date | — |
| Expiry date | Jul 25, 2024 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60K17/3467
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A transfer case for a vehicle that includes a planetary gear assembly, a clutch pack assembly, and a band and drum assembly that provide an overdrive or underdrive and direct drive in combination with a vehicle transmission. In one embodiment, an input shaft drives an outer ring gear of the planetary gear assembly and is coupled to one set of discs of the clutch assembly. A carrier of the planetary gear assembly is coupled to a rear output shaft, where the carrier supports a plurality of pinion gears. A sun gear of the planetary gear assembly is coupled to another set of discs of the clutch assembly that are coupled to the drum. When the clutch assembly is engaged, the ring gear is coupled to the sun gear for direct drive and when the band is engaged, the pinion gears and the ring gear provide underdrive.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.