Driveline retarder with ball ramp loaded friction plates

Details Driveline retarder with ball ramp loaded friction plates Driveline retarder with ball ramp loaded friction plates

1997-07-14

1998-10-13

Oberleitner, Robert J.

Brakes

Wheel

Axially movable brake element or housing therefor

192 5643, 192 7023, 192 8493, F16D 5536

Patent

active

058198830

ABSTRACT:
A driveline retarder coupled to a vehicle driveline where a ball ramp actuator having a control plate and an activation plate separated by rolling elements is energized by an electrical coil is used to apply a clamping load on a clutch pack which frictionally couples a rotating shaft to a gerotor hydraulic pump which is used to absorb rotational energy to create a braking torque on the vehicle driveline to aid in vehicle braking. A coupling plate is electromagnetically attracted to the electrical coil thereby transferring a braking torque to the control plate through a flex plate.

REFERENCES:
patent: 2937729 (1960-05-01), Sperr, Jr.
patent: 2956649 (1960-10-01), Kelley
patent: 3088552 (1963-05-01), Christenson et al.
patent: 3313381 (1967-04-01), Harting et al.
patent: 4352415 (1982-10-01), Powell

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