Patent ID: 9709113
Date: 2017-07-18
CPC Classifications: B60T,B62D,F16D

Claim:
1. An electric drum brake comprising: a back plate; shoes operatively mounted to the backplate and displaceable to a deployed condition against a wheel drum from a retracted condition; an electrically powered actuation mechanism adapted to convert electric power to a movement of the shoes to the deployed condition; and a safety actuation mechanism comprising a lever having a first end adapted to receive a mechanical force, a joint configuration connecting the lever to at least one of the shoes to convert movements of the lever to movements of at least one of the shoes between the deployed condition and the retracted condition without said electric power, and a biasing member producing a biasing action against at least one of the lever and the joint configuration to maintain the shoes in the deployed condition, the mechanical force being against the biasing action to maintain the shoes in the retracted condition.