Recuperative arrangement for gas turbine engines

Claim 1

IN A GAS TURBNE POWERPLANT INCLUDING A FLUID COMPRESSOR HAVING INLET AND DISCHARGE PORITONS, A COMBUSTOR HAVING INLET AND DISCHARGE PORTIONS, AND A TURBINE HAVING INLET AND DISCHARGE PORTIONS IN AXIALLY SPACED RELATION, A DISCHARGE OPENING, AND A PASSAGEWAY CONNECTING THE DISCHARGE PORTION OF THE TURBINE TO THE DISCHARGE OPENING, A RECUPERATIVE ARRANGEMENT COMPRISING; A FIRST ANNULAR HEADER, FIRST DUCTING MEANS CONNECTED TO SAID FIRST ANNULAR HEADER, A SECOND ANNULAR HEADER ENVELOPED BY SAID FIRST ANNULAR HEADER IN SPACED RALATION THERETO SECOND DUCTING MEANS CONNECTED TO SAID SECOND ANNULAR HEADER, SAID SECOND DUCTING MEANS ENVELOPED BY AND COAXIAL WITH SAID FIRST DUCTING MEANS, ONE OF SAID FIRST AND SECOND DUCTING MEANS CONNECTED TO THE DISCHARGE PORTION OF THE COMPRESSOR AND THE OTHER OF SAID FRIST AND SECOND DUCTING MEANS CONNECTED TO THE INLET PORTION OF THE COMBUSTOR, AND A BANK OF HEAT EXCHANGE MEMBERS POSITIONED IN THE PASSGEWAY BETWEEN THE DISCHARGE PORTION OF THE TURBINE WITH CUMBUSTIN PRODUCES FLOWING THERETHROUGH, EACH OF SAID HEAT EXCHANGE MEMBERS COMPRISING AN ELONGATED CLOSED CYLINDER SLIDABLY SUPPORTED IN THE PASSAGEWAY AND A COAXIAL TUBE SLIDABLY SUPPORTED WITHIN SAID CYLINDER, SAID ELONGATED CYLINDER INTERSECTIN THE WALL OF SAID FIRST ANNUALAR HEADER AND SECURED TO SAID FIRST AND SECOND ANNULAR HEADERS ADJACENT FIRST ENDS OF SAID