Screw with heat exchange passage

Claim 1

A FLUID COOLED SCREW COMPRISING AN EXTERNALLY THREADED SCREW MEMBER HAVING AN AXIALLY DIRECTED OPENING EXTENDING FROM A FIRST AXIAL POSITION ALONG SAID SCREW TOWARD A SECOND AXIAL POSITION ALONG SAID SCREW AND HAVING A CLOSED END FOR SAID OPENING, AN INPUT CONDUIT MEANS AND OUTPUT CONDUIT MEANS COMMUNICATING WITH SID AXIALLY DIRECTED OPENING, AND A FLAT DIRECTING MEANS IN SAID OPENING FOR DIRECTING FLUID FROM SAID INPUT CONDUIT MEANS THROUGH AT LEAST A PORTION OF SAID OPENING AND TO SAID OUTPUT CONDUIT MEANS; SAID FLUID DIRECTING MEANS COMPRISING A SUBSTANTIA6LY FLAT BAFFLE EXTENDING COMPLETELY ACROSS SAID OPENING AND TERMINATING ADJACENT SAID CLOSED END; SAID FIRST CONDUIT MEANS COMMUNICATING WITH ONE SIDE OF SAID BAFFLE; SAID SECOND CONDUIT MEANS COMMUNICATING WITH THE OTHER SIDE OF SAID BAFFLE; SAID SCREW HAVING A SCREW HEAD PROVIDED WITH TOOL ENGAGING MEANS; SAID OPENING EXTENDING INTO SAID SCREW HEAD; AND AN INSERT MEANS INCLUDING WALLS; SAID INSERT MEANS BEING RECEIVED BY SAID SCREW HEAD; SAID INSERT MEANS HAVING A HEAD PORTION FOR CLOSING T HE TOP OF SAID OPENING; SAID FLUID DIRECTING MEANS BEING SECURED TO AND EXTENDING FROM THE BOTTOM OF SAID INSERT MEANS; SAID INSERT HAVING A CENTRAL OPENING EXTENDING FROM ITS SAID HEAD PORTION AND COMMUNICATING WITH SAID OPENING IN THE SCREEN; SAID FIRST AND SECOND CONDUIT MEANS EXTENDING THROUGH THE WALLS OF SAID INSERT AND INTO SAID CENTRAL OPENING IN SAID INSERT.