Pressure operated sleeve valve and operator

Claim 1

A FLOW CONTROL DEVICE INCLUDING: A FLOW CONDUCTOR HAVING A LATERAL PORT, VALVE MEANS IN SAID FLOW CONDUCTOR FOR CONTROLLING THE FLOW OF FLUIDS BETWEEN THE INTERIOR AND THE EXTERIOR OF SAID CONDUCTOR THROUGH SAID LATERAL PORT; SAID VALVE MEANS INCLUDING AN ELONGATE SLEEVE HAVING A LATERAL PASSAGE FORMED THEREIN AND SLIDABLE LONGITUDINALLY OF SAID CONDUCTOR AND A SECOND POSITION IN WHICH SAID LATERAL PASSAGE IS IN COMMUNICATION WITH THE LATERAL PORT OF SAID CONDUCTOR AND A SECOND POSITION IN WHICH SAID SLEEVE CLOSES THE LATERAL PORT OF THE CONDUCTOR, AND RELEASABLE PLUG MEANS DISPOSED IN SAID LATERAL PORT OF SAID CONDUCTOR AND SUPPORTED THEREIN AGAINST DISPLACEMENT INWARDLY BY PRESSURE OF FLUIDS EXTERIORLY OF THE HOUSING; SAID PLUG MEANS BEING DISPLACEABLE OUTWARDLY OF SAID LATERAL PORT OF SAID HOUSING BY FLUID PRESSURE FROM WITHIN THE CONDUCTOR WHILE SAID SLEEVE IS IN SAID INITIAL POSITION; SLEEVE VALVE OPERATOR MEANS ENGAGING SAID SLEEVE WITHIN SAID FLOW CONDUCTOR RESPONSIVE TO FLUID PRESSURE THEREIN FOR MOVING SAID VALVE SLEEVE OF SAID VALVE MEANS FROM OPEN POSITION WHEREIN SAID SLEEVE PERMITS FLUID FLOW THROUGH SAID LATERAL PORT TO CLOSED POSITION WHEREBY SAID SLEEVE PREVENTS FLUID FLOW THROUGH SAID LATERAL PORT, SAID OPERATOR MEANS BEING DISPLACABLE LONGITUDINALLY OUT OF SAID SLEEVE AND SAID CONDUCTOR; SAID SLEEVE HAVING MEANS IN ITS BORE ADAPTED TO BE ENGAGED BY A SHIFTING TOOL FOR MOVING SAID SLEEVE FROM SAID SECOND POSITION CLOSING SAID LATERAL PORT TO SAID INITIAL POSITION REOPENING SAID LATERAL PORT.