Stay bolt structure for interconnecting structural parts

Claim 1

A TENSIONING ARRANGEMENT FOR A STAY BOLT STRUCTURE INTERCONNECTING STRUCTURAL PARTS HAVING ALIGNED BORES EXTENDING THERETHROUGH, ONE OF SAID PARTS HAVING A COUNTERBORE PROVIDING A RECESS OPENING TOWARD THE OTHER PART, AN ELONGATED BOLT MEMBER HAVING A PORTION OF ENLARGED DIAMETER EXTENDING THROUGH THE BORE IN SAID OTHER PART AND SLIDABLY RECEIVED IN SAID RECESS AND A PORTION OF SMALL DIAMETER EXTENDING THROUGH THE BORE IN SAID ONE PART, MEANS CONNECTING SAID SMALL DIAMETER PORTION TO SAID ONE PART, MEANS ON SAID ENLARGED DIAMETER PORTION ENGAGING SAID OTHER PART, SAID PORTION OF ENLARGED DIAMETER TERMINATING IN A SHOULDER WITHIN SAID RECESS TO PROVIDE A PISTON AND A PASSAGE IN SAID ONE PART COMMUNICATING WITH SAID RECESS ADJACENT THE INNER END THEREOF FOR CONDUCTING PRESSURE FLUID THERETO, WHEREBY UPON THE INTRODUCTION OF PRESSURE FLUID TO SAID RECESS A FORCE WILL BE EXERTED ON SAID PISTON TO STRETCH SAID BOLT MEMBER, THERBEY RELIEVING THE INTERCONNECTING FORCE ON SAID PARTS.