Pressure compensated bellows joints

Claim 1

IN A BELLOWS JOINT, THE COMBINATION COMPRISING FIRST AND SECOND ANNULAR END MEMBERS AT FIRST AND SECOND ENDS OF THE JOINT FOR CONNECTING THE JOINT BETWEEN CONDUIT SECTIONS, AN INNER HOUSING CONNECTED TO SAID FIRST END MEMBER AND EXTENDING THEREFROM TOWARD SAID SECOND END OF THE JOINT, AN OUTER HOUSING CONNECTED TO SAID SECOND END MEMBER AND EXTENDING THEREFROM TOWARD THE FIRST END OF THE JOINT, SAID OUTER HOUSING BEING SPACED OUTWARDLY FROM AND RECEIVED AROUND SAID INNER HOUSING, FIRST, SECOND AND THIRD BELLOWS POSITIONED BETWEEN SAID INNER AND OUTER HOUSINGS, SAID FIRST AND SECOND BELLOWS BEING ARRANGED END TO END AND BEING SPACED OUTWARDLY FROM SAID INNER HOUSING, SAID THIRD BELLOWS BEING LARGER IN DIAMETER THAN SAID FIRST AND SECOND BELLOWS AND BEING SPACED INWARDLY FROM SAID OUTER HOUSING AND RADIALLY OUTWARD OF SAID FIRST AND SECOND BELLOWS, EACH OF SAID BELLOWS HAVING A FIRST END DIRECTED TOWARD SAID FIRST END OF THE JOINT AND A SECOND END DIRECTED TOWARD SAID SECOND END OF THE JOINT, A FIRST ANNULAR WALL MEMBER CONNECTED BETWEEN SAID FIRST END OF SAID THIRD BELLOWS AND SAID SECOND END OF SAID FIRST BELLOWS, A SECOND ANNULAR WALL MEMBER CONNECTED BETWEEN SAID SECOND END OF SAID THIRD BELLOWS AND SAID FIRST END OF SAID SECOND BELLOWS, A THIRD ANNULAR WALL MEMBER CONNECTED BETWEEN SAID SECOND END OF SAID SECOND BELLOWS AND SAID INNER HOUSING, A FOURTH ANNULAR WALL MEMBER CONNECTED BETWEEN THE SECOND END OF SAID FIRST BELLOWS AND SAID INNER HOUSING, SAID FIRST BELLOWS, SAID FOURTH ANNULAR WALL MEMBER AND SAID INNER HOUSING FORMING A FIRST CHAMBER IN COMMUNICATION WITH THE INTERIOR SIDE OF SAID FIRST BELLOWS, SAID FIRST BELLOWS AT THE FIRST END THEREOF BEING RADIALLY OUTWARDLY SPACED FROM SAID INNER HOUSING AND AFFORDING COMMUNICATION WITH THE ATMOSPHERE AND SAID FIRST CHAMBER, SAID SECOND AND THIRD BELLOWS AND SAID FIRST, SECOND, THIRD AND FOURTH ANNULAR WALL MEMBERS FORMING A SECOND CHAMBER IN COMMUNICATION WITH THE INTERIOR SIDES OF SAID SECOND AND THIRD BELLOWS, SAID FOURTH ANNULAR WALL MEMBER HAVING AN OPENING THEREIN EXTENDING BETWEEN SAID FIRST AND SECOND CHAMBERS AND AFFORDING COMMUNICATION BETWEEN SAID SECOND CHAMBER AND THE ATMOSPHERE, A FIFTH ANNULAR WALL MEMBER CONNECTED BETWEEN THE FIRST END OF SAID FIRST BELLOWS AND SAID OUTER HOUSING, AND A SIXTH ANNULAR WALL MEMBER CONNECTED BETWEEN SAID SECOND END OF SAID THIRD BELLOWS AND SAID OUTER HOUSING, SAID SECOND BELLOWS, SAID SECOND ANNULAR WALL MEMBER, SAID SIXTH ANNULAR WALL MEMBER AND SAID OUTER HOUSING FORMING A THIRD CHAMBER IN COMMUNICATION WITH THE EXTERIOR SIDE OF SAID SECOND BELLOWS, SAID SECOND BELLOWS BEING SPACED AT ITS SAID SECOND END THEREOF FROM SAID OUTER HOUSING FOR ESTABLISHING COMMUNICATION BETWEEN THE INTERIOR OF SAID INNER HOUSING AND SAID THIRD CHAMBER TO APPLY THE FLUID PRESSURE FROM THE INTERIOR OF SAID INNER HOUSING TO THE EXTERIOR SIDE OF SAID SECOND BELLOWS, SAID FIRST AND THIRD BELLOWS, SAID OUTER HOUSING AND SAID FIRST, FIFTH AND SIXTH ANNULAR WALL MEMBERS FORMING A FOURTH CHAMBER IN COMMUNICATION WITH THE EXTERIOR SIDES OF SAID FIRST AND THIRD BELLOWS, SAID SIXTH ANNULAR WALL MEMBER HAVING AN OPENING THEREIN AFFORDING COMMUNICATION BETWEEN SAID THIRD AND FOURTH CHAMBERS TO APPLY THE FLUID PRESSURE FROM THE INTERIOR OF SAID INNER HOUSING TO THE EXTERIOR SIDES OF SAID FIRST AND THIRD BELLOWS, THE EFFECTIVE CROSS-SECTIONAL AREAS OF EACH OF SAID WALL MEMBERS WHICH ARE DISPOSED IN PRESSURE OPPOSITION BEING SO PROPORTIONED IN RELATION TO THE EFFECTIVE CROSS-SECTIONAL AREAS OF SAID BELLOWS THAT THE ACTION OF THE FLUID PRESSURE ACTING ON SAID OPPOSED ANNULAR WALL MEMBERS AND SAID BELLOWS IS EFFECTIVE TO COMPENSATE FOR THE TENDENCY OF THE JOINT TO ELONGATE DUE TO FLUID PRESSURE.