Multi-wall flexible connector with interply pressurization

Claim 1

A FLEXIBLE CONNECTOR COMPRISING: FIRST ANNULAR END FLANGE MEANS; SECOND ANNULAR END FLANGE MEANS SPACED APART FROM SAID FIRST ANNULAR END FLANGE MEANS; FLEXIBLE TUBING MEANS FIXED BETWEEN SAID END FLANGE MEANS, INCLUDING A FIRST FLEXIBLE, CORRUGATED TUBE AND A SECOND FLEXIBLE, CORRUGATED TUBE DISPOSED IN COAXIAL RELATIONSHIP WITH SAID FIRST TUBE, THE CORRUGATIONS OF SAID SECOND TUBE BEING RADIALLY ALIGNED WITH THE CORRUGATIONS OF SAID FIRST TUBE IN PARTIALLY INTERFITTING RELATIONSHIP THEREWITH WHEREBY CLOSELY TO SPACE SAID TUBES; JOINT MEANS CONNECTING THE RESPECTIVE ENDS OF SAID FIRST AND SECOND FLEXIBLE TUBES TO DEFINE A CLOSED ANNULAR SPACE THEREBETWEEN; ONE OF SAID END FLANGE MEANS HAVING A PASSAGEWAY AFFORDING COMMUNICATION WITH THE ANNULAR SPACE WITHIN THE ADJACENT JOINT MEANS; AN INTERNALLY RECESSED BLOCK MOUNTED ON SAID ONE END FLANGE MEANS IN COMMUNICATION WITH SAID PASSAGEWAY AND HAVING AN EXTERNALLY ACCESSIBLE SEALED CONDUIT TO THE BLOCK RECESS; FLUID PERMANENTLY FILLED INTO SAID SPACE TO A SUPERATMOSPHERIC PRESSURE THROUGH SAID CONDUIT, BLOCK RECESS AND PASSAGEWAY BEFORE THE CONDUIT IS SEALED; AND A PRESSURE GAUGE ATTACHED TO THE BLOCK FOR COMMUNICATION WITH THE ANNULAR SPACED FOR INDICATING CHANGE OF PRESSURE THEREIN.