Hydraulic controls for lock-up clutch of a torque converter assembly
US5251734A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 8, 1992 |
| Grant date | Oct 12, 1993 |
| Priority date | — |
| Expiry date | May 8, 2012 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H61/14
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A valve assembly in a fluid system of an automatic transmission for controlling the lock-up of the torque converter assembly of the automatic transmission includes a regulator valve for establishing a pressure level of fluid flow from a fluid source, a torque converter control valve for controlling fluid pressure to the torque converter assembly during the disengagement operating mode, and a lock-up valve receiving fluid pressure feedback from the torque converter control valve to close a fluid path during the disengagement operating mode and opening the fluid path for allowing fluid pressure to the apply side of the torque converter assembly during the engagement operating mode.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.