Patent ID: 8408328

Claim:
A hydraulic control system, comprising: a plurality of motor assemblies including at least a first motor and a second motor, wherein each of the first and second motors are coupled to and configured to rotate a drive shaft; and said drive shaft operatively associated with the plurality of motor assemblies a pump operatively associated with the first motor; a first coupling valve operatively associated with the second motor; first parallel valves operatively associated with the second motor; and a first switching valve operatively associated with the first coupling valve and the first parallel valves, the first switching valve being configured to switch the first coupling valve between a first coupling state and a second coupling state opposite the first coupling state and to switch the first parallel valves between a first parallel state and a second parallel state opposite the first parallel state, wherein while the first parallel valves are in the first parallel state a portion of the output of the first motor drives the second motor and while the first parallel valves are in the second parallel state a portion of the output of the pump drives the second motor.