Hydrostatic setting tool

Claim 1

AN ACTUATION DEVICE OF THE CHARACTER DESCRIBED COMPRISING: A BODY ADAPTED TO BE SUSPENDED IN THE HYDROSTATIC FLUID PRESSURE ENVIRONMENT OF A WELL BORE BY MEANS OF A WIRELINE; SAID BODY COMPRISING A SUCCESSION OF CHAMBERS INCLUDING A LAST CHAMBER; A SUCCESSION OF PISTONS, ONE IN EACH OF SAID CHAMBERS DEFINING FIRST AND SECOND CHAMBER PORTIONS THEREIN; A SEPARATE PISTON ROD ASSOCIATED WITH EACH OF THE PENULTIMATE AND PRECEDING ONES OF SAID SUCCESSION OF PISTONS AND EXTENDING THROUGH THE SECOND CHAMBER PORTION DEFINED THEREBY, THROUGH A CHAMBER END WALL IN SEALED SLIDABLE RELATION THEREWITH, AND INTO THE FIRST CHAMBER PORTION OF A SUCCESSIVE CHAMBER; SAID ROD EXTENDING INTO SAID SUCCESSIVE CHAMBER ADAPTED FOR TRANSMISSION OF FORCE FROM ITS ASSOCIATED PISTON TO THE PISTON IN SAID SUCCESSIVE CHAMBER; A LAST PISTON ROD ASSOCIATED WITH THE LAST CHAMBER OF SAID SUCCESSION OF CHAMBERS EXTENDING THROUGH THE SECOND CHAMBER PORTION THEREOF, THROUGH AN END WALL THEREOF IN SEALED SLIDABLE RELATION THEREWITH, AND EXTERNALLY OF SAID BODY; ALL THE PISTONS, INCLUDING THEIR RESPECTIVELY ASSOCIATED PISTON RODS, RESPECTIVELY ASSOCIATED WITH THE PENULTIMATE AND PRECEDING CHAMBERS OF SAID SUCCESSION OF CHAMBERS BEING PROVIDED WITH FLUID PASSAGEWAYS INTERCOMMUNICATING THE FIRST CHAMBER PORTIONS OF EACH CHAMBER OF SAID SUCCESSION OF CHAMBERS; MEANS IN SAID DEVICE FOR APPLICATION OF WELL BORE FLUID PRESSURE TO SAID INTERCOMMUNICATED FIRST CHAMBER PORTIONS AND TO EFFECTIVE AREAS OF THE PISTONS RESPECTIVELY DEFINING SAID FIRST CHAMBER PORTIONS; AND ALL SAID PISTONS, BY VIRTUE OF SAID TRANS-