Cryogenic closed cycle power system

Claim 1

A POWER GENERATING SYSTEM COMPRISING: A CLOSED FLUID CIRCUIT CONTAINING A COMPRESSIBLE WORKING FLUID AND INCLUDING A COMPRESSOR FOR COMPRESSING SAID FLUID, A FLUID EXPANSION MOTOR THROUGH WHICH SAID FLUID EXPANDS TO DRIVE THE MOTOR, AN ELECTRICAL GENERATOR, AND MEANS DRIVABLY COUPLING SAID MOTOR TO SAID COMPRESSOR AND GENERATOR, WHEREBY THE COMPRESSOR AND GENERATOR ARE DRIVEN BY SAID MOTOR; AN OPEN FUEL CIRCUIT INCLUDING A STORAGE VESSEL FOR CONTAINING A FUEL AND A COMBUSTOR COMMUNICATING WITH SAID VESSEL FOR BURNING SAID FUEL; A FIRST HEAT EXCHANGER TERMALLY COUPLING SAID CLOSED FLUID CIRCUIT ADJACENT THE COMPRESSOR INLET TO SAID OPEN FUEL CIRCUIT ADJACENT SAID STORAGE VESSEL FOR CONVEYING THE WORKING FLUID ENTERING THE COMPRESSOR IN HEAT TRANSFER RELATION TO FUEL IN SAID OPEN CIRCUIT; A SECOND HEAT EXCHANGER THERMALLY COUPLING SAID CLOSED FLUID CIRCUIT ADJACENT THE MOTOR INLET TO SAID OPEN FUEL CIRCUIT ADJACENT SAID COMBUSTOR FOR CONVEYING THE WORKING FLUID ENTERING SAID MOTOR IN HEAT TRANSFER RELATION TO THE BURNING FUEL IN SAID COMBUSTOR; AND A THIRD HEAT EXCHANGER IN SAID CLOSED FLUID CIRCUIT BETWEEN SAID FIRST AND SECOND HEAT EXCHANGERS DISPOSED IN HEAT TRANSFER RELATION TO SAID GENERATOR.