Patent ID: 8011482

Claim:
A drum brake assembly comprising: a mounting flange having an abutment; a backing plate secured to said mounting flange, said backing plate having a pair of brake shoes supported thereon; an electric actuator unit for actuating the drum brake assembly to selectively move said brake shoes between a braking and a non-braking position, said electric actuator unit including a housing, a motor, a gear-set operatively coupled to be driven by said motor, a spindle nut operatively coupled to be rotationally driven by said gear-set, a pull rod operatively coupled to be translatorily driven by said spindle nut, and a brake shoe actuation link assembly directly coupled to an end of said pull rod so as to be actuated by said pull rod to thereby move said brake shoes between said braking and non-braking positions, said end of said pull rod being directly coupled to said brake shoe actuation link assembly by a first link member of said brake shoe actuation link assembly, said first link member having a first end pivotally connected to said end of said pull rod and a second end pivotally connected to a second link member of said brake shoe actuation link assembly; and a spring member disposed within said housing and around said pull rod so as to be operatively coupled to said pull rod for applying a follow up force to said pull rod when said brake shoes are in said braking position.