Patent ID: 7344199
Filing Date: 2008-03-18
Classification: B60T,F16D

Abstract:
1. A brake system for braking a rotatable brake disk, the brake system comprising: a primary brake piston engagable with the brake disk in response to fluid pressure; a secondary brake piston engagable with the primary brake piston and operable to move the primary brake piston into engagement with the brake disk in response to fluid pressure; a source of pressurized hydraulic fluid; a primary brake valve controlling communication of fluid pressure from the source to the primary brake piston; and a secondary brake valve controlling communication of fluid pressure from the source to the secondary brake piston, the primary brake piston comprising a plate and a flange which projects away from the plate and from the brake disk, the secondary brake piston engaging the plate, and the plate being located between the brake disk and the secondary brake piston.