Patent ID: 8955650
Filing Date: 2015-02-17
Classification: F16D

Abstract:
1. A brake actuator for a progressive cavity pump, the progressive cavity pump having a first motor producing first output for rotating a drive shaft and having a rotatably-actuated brake mechanism for stopping rotation of the drive shaft, the brake actuator comprising: a second motor producing second output in first and second directions, the second output being independent of the first output of the first motor; a coupling connecting the second output of the second motor to the rotatably-actuated brake mechanism of the progressive cavity pump drive to control the rotation of the drive shaft independent of the first output of the first motor; and a manually-operable control operatively coupled to the second motor and monitoring rotational speed of the drive shaft of the progressive cavity pump, the control providing an indication of the rotational speed and being manually operable to control the second motor to provide the second output in either the first or the second direction.