Patent ID: 9114536
Filing Date: 2015-08-25
Classification: B25J,H02P

Abstract:
1. An unpowered braking system for braking a cyclically rotating motor, the system comprising: at least one passive electrical element for conducting current induced by motor rotations without activating a bridge circuit powering the motor; and charge-storage means, connected to said at least one passive electrical element, for storing charge and converting the stored charge to an output voltage; voltage-actuated circuitry for braking the motor upon activation by a braking voltage; and control circuitry for controlling activation and deactivation of the voltage-actuated circuitry, the control circuitry being (i) connected to the charge-storage circuitry to receive the output voltage therefrom and (ii) responsive to a braking signal to boost a voltage at the voltage-actuated circuitry from a non-braking voltage to the braking voltage.