Replacement torque converter cover assembly
US7717244B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Aug 15, 2007 |
| Grant date | May 18, 2010 |
| Priority date | — |
| Expiry date | Jan 22, 2029 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49716
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A replacement torque converter cover designed to withstand mechanical stresses generated in the torque converter lock-up clutch of ALLISON transmissions when such transmissions are utilized with diesel engines and other high-torque truck engines. The original equipment cover includes through-drilled holes for receiving unitary threaded stud pins, which function to attach the cover to the engine crankshaft externally and to drive the lock-up clutch piston internally during operation. The present replacement cover provides a lock-up clutch piston interface wherein such through-drilled holes and unitary threaded stud pins are eliminated, which substantially reduces stress concentration and mechanical fatigue in the replacement cover. In comparison to the unitary threaded stud pins of the original equipment cover, the present replacement cover provides separate threaded stud and drive pin components respectively, which are installed at radially offset positions on opposite sides of a modified radial wall having an increased axial thickness and improved durability.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.