Remotely controlled apparatus for downhole applications, components for such apparatus, remote status indication devices for such apparatus, and related methods

An expandable apparatus, comprising:

• a tubular body comprising a fluid passageway extending therethrough, the tubular body having a valve housing disposed therein;
• a valve piston disposed within the valve housing, the valve piston configured to move axially within the tubular body responsive to a pressure of drilling fluid passing through a drilling fluid flow path and configured to selectively control a flow of fluid into an annular chamber;
• a push sleeve disposed within the tubular body and coupled to at least one expandable feature, the push sleeve configured to move axially responsive to the flow of fluid into the annular chamber extending the at least one expandable feature;
• and
• at least one fluid path extending through the push sleeve to a nozzle in the tubular body, wherein the at least one fluid path is always open;
• wherein the expandable apparatus is configured to generate a signal indicating extension of the at least one expandable feature.