Patent ID: 7182183

Claim:
A disc brake assembly for an automotive vehicle, comprising: a hub rotatable about an axis; at least a pair of circumferentially extending brake discs supported on said hub for rotation therewith and for axial sliding movement relative to said hub along said axis and extending radially outwardly of said hub and having opposite sides presenting braking surfaces; a non-rotatable support structure; a plurality of non-rotatable brake pads having spaced ends in the circumferential direction of said brake discs braking surfaces supported by said non-rotatable support structure for relative axial movement into and out of frictional braking engagement with said braking surfaces; a piston moveable from an unactuated position to an actuated position into engagement with an adjacent one of said non-rotatable brake pads to effect said sliding movement of said plurality of brake pads and said brake discs; a primary electric actuator mounted on said non-rotatable support structure adjacent at least one of said plurality of brake pads and operative when actuated to move said piston to an actuated position and to slide said plurality of brake pads and said brake discs into said frictional braking engagement with one another; and a secondary actuator coupled operatively to said piston and operative when actuated to move said piston to said actuated position independent of said actuation of said primary electric actuator.