Patent ID: 9719569
Date: 2017-08-01
CPC Classifications: F16D,H02K

Claim:
1. A brake, comprising: a rotor having a plurality of magnets and a plurality of ferromagnetic poles radially disposed thereabout; and a stator having a plurality of shunts and a plurality of teeth radially disposed thereabout, at least one of the plurality of shunts and the plurality of teeth being configured to selectively move between an engagement state and a free engagement state, the teeth being configured to generate magnetic flux with the ferromagnetic poles so as to generate a braking torque during the engagement state, the shunts being configured to redirect the magnetic flux therethrough and reduce the braking torque between the teeth and the ferromagnetic poles during the free engagement state; and an actuator assembly configured to selectively extend the one of the plurality of shunts and teeth relative to the other to achieve the engagement state, and to retract the one of the plurality of shunts and teeth relative to the other to achieve the free engagement state.