Friction brake device utilizing dual ball ramp devices

Details Friction brake device utilizing dual ball ramp devices Friction brake device utilizing dual ball ramp devices

1998-09-25

2000-07-04

Oberleitner, Robert J

Brakes

Wheel

Axially movable brake element or housing therefor

188 712, 188 714, 188 729, 192 35, F16D 5508

Patent

active

060825049

ABSTRACT:
A friction brake assembly for applying a braking torque to a rotating shaft such as a transmission output shaft utilizing a primary ball ramp mechanism having a control ring and activation ring with opposed variable depth grooves and rolling members disposed therebetween to load a friction brake in response to a secondary ball ramp mechanism which creates a braking torque on the control ring to activate the primary ball ramp mechanism in response to the rotation of a control lever. Rolling members disposed in opposed variable depth grooves formed in the control lever and a control plate force the control plate towards a housing extension thereby applying a friction force to a clamp ring where the clamp ring is connected to the control ring of the primary ball ramp mechanism using a flex extension to allow relative axial movement between the clamp ring and the control ring. In this manner, the friction brake assembly of the present invention can function as a vehicle parking brake.

REFERENCES:
patent: 3313381 (1967-04-01), Harting et al.
patent: 4352415 (1982-10-01), Powell
patent: 4805486 (1989-02-01), Hagiwara
patent: 5033591 (1991-07-01), Price
patent: 5038895 (1991-08-01), Evans
patent: 5322146 (1994-06-01), Holl et al.
patent: 5485904 (1996-01-01), Organek et al.
patent: 5505285 (1996-04-01), Organek
patent: 5528950 (1996-06-01), Organek et al.
patent: 5529150 (1996-06-01), Buckley et al.

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