Roller One-Way Clutches for Today's Passenger Car Automatic Transmissions

The roller one-way clutch has achieved wide acceptance in today's passenger car automatic transmission and has proved itself able to operate satisfactorily under the high demands of this application. Careful attention to the various design parameters for the clutch and its races, and to development through test has resulted in excellent performance.

The roller clutches being used in present transmissions are of the loose spring and roller type or the caged spring and roller type, both with individually spring energized rollers.