Patent ID: 8847523

Claim:
A drive, including: a direct-current motor having a first and a second electrical terminal, an electro-mechanical brake associated with the direct-current motor and having a first electrical terminal and a second electrical terminal, the second electrical terminal being at least indirectly connected with a reference voltage, a first electronic valve electrically coupled with the first terminal of the direct-current motor and the first electrical terminal of the brake, the first electronic valve being configured to only permit current to flow from between the first terminal of the direct-current motor to the first electrical terminal of the brake only in a forward direction of the first electronic valve, and a second electronic valve electrically coupled with the second terminal of the direct-current motor and the first electrical terminal of the brake, the second electronic valve being configured to only permit current to flow from between the second terminal of the direct-current motor to the first electrical terminal of the brake only in a forward direction of the second electronic valve, wherein the electro-mechanical brake is configured to engage and stop the direct-current motor when no current is flowing across the first and second electrical terminals of the direct-current motor.