Hydrokinetic torque coupling device having turbine-piston lockup clutch, and related methods
US9341250B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 5, 2014 |
| Grant date | May 17, 2016 |
| Priority date | — |
| Expiry date | Dec 10, 2034 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H2045/0294
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A hydrokinetic torque coupling device includes an impeller, a casing having a first engagement surface, a turbine-piston hydrodynamically drivable by the impeller, and a bearing device. The turbine-piston is axially displaceable into and out of a lockup mode. The bearing device includes a non-axially oriented spring and a substantially incompressible rolling member urged by the spring against an oblique contact surface associated with the turbine-piston to thereby exert a variable axial force against the turbine-piston shell for biasing the turbine-piston out of the lockup mode. The variable axial force exerted by the bearing device against the turbine-piston shell decreases as the turbine-piston is axially displaced towards the lockup mode.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.