Differential transmission with cleaning feature
US7918315B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jan 8, 2008 |
| Grant date | Apr 5, 2011 |
| Priority date | — |
| Expiry date | Mar 13, 2028 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/2589
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A limited slip differential transmission of the closed type in which a pressurized lubricant is fed to the rotating gears and a series of limited slip clutch plates. The clutch plates are engaged by pressurized control fluid. A valve assembly having a spool valve is responsive to engagement pressure to permit discharge of a portion of pressurized fluid from the clutch plates to a sump chamber and the transmission to purge debris that may have accumulated in the clutch plates. The spool valve is arranged so that fluid is passed only during an intermediate movement of the valve to minimize any pressure loss from the lubricating fluid for the transmission and limited slip clutches.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.