Dump valve for wet clutch
US4142619A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Sep 13, 1976 |
| Grant date | Mar 6, 1979 |
| Priority date | — |
| Expiry date | Sep 13, 1996 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16D13/74
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A dump valve mechanism for a wet clutch wherein the clutch includes a plurality of friction elements supplied with lubricating and cooling oil when the clutch is engaged and including a fluid pumping means as a part of a release mechanism, the release mechanism being axially movable to a position engaging a brake for a transmission input shaft. The dump valve is defined by a pair of annular surfaces which are opened and separated when the brake is engaged due to relative movement between parts of the release mechanism to divert the lubricant and cooling fluid from the clutch discs as the brake is applied to prevent viscous drag from providing unwanted drive between the friction elements when the clutch is disengaged.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.