Oil passages of torque converter
US4974715A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Oct 2, 1989 |
| Grant date | Dec 4, 1990 |
| Priority date | — |
| Expiry date | Oct 2, 2009 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H2045/0294
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A lockup torque converter has a turbine splined to a turbine shaft, and a stator mounted on a stator shaft. Axial hole, radial hole and annular groove of the turbine shaft, and a first radial hole of the stator shaft form a first fluid passage for connecting a first fluid chamber on one side of a lockup clutch piston, with a pressure control unit whereas a second fluid passage for a second fluid chamber on the other side of the lockup clutch piston is formed by an outer annular clearance around the stator shaft inside a hub of an impeller. In order to prevent fluid leakage, the stator shaft is further formed with a second radial hole extending from the outer annular clearance to an inner annular clearance which is formed around the turbine shaft inside the stator shaft, and which is bounded between a bushing for supporting the turbine shaft and a sealing ring.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.