Hot-gas reciprocating machine

Claim 1

A HOT-GAS RECIPROCATING APPARATUS COMPRISING AT LEAST ONE CYLINDER, AT LEAST TWO PISTON-LIKE BODIES MOUNTED FOR RECIPROCATING MOVEMENT WITH A PREDETERMINED PHASE DIFFERENCE IN SAID CYLINDER FORMING IN THE LATTER AT LEAST ONE COMPRESSION SPACE AND AT LEAST ONE EXPANSION SPACE, A MEDIUM IN SAID COMPRESSION SPACE AND SAID EXPANSION SPACE, A CLOSED SPACE ADJACENT TO EACH PISTON-LIKE BODY A TRANSFERABLE FLUID IN SAID CLOSED SPACES, SAID COMPRESSION AND EXPANSION SPACES UPON OPERATION OF SAID APPARATUS HAVING RELATIVELY DIFFERENT MEAN TEMPERATURES, MEANS INTERCONNECTING SAID COMPRESSION AND EXPANSION SPACES INCLUDING A REGENERATOR THROUGH WHICH SAID MEDIUM TRAVERSES, SAID PISTON-LIKE BODIES RECIPROCATING WITH SAID PHASE DIFFERENCE IN ORDER TO VARY THE VOLUME OF THE EXPANSION SPACE AND THE COMPRESSION SPACE, A DRIVING GEAR COUPLED TO ONE OF SAID PISTON-LIKE BODIES, SAID PISTONLIKE BODIES BEING CONNECTED BY DUCTS ENCLOSING FLUID COLUMNS FROM SAID CLOSED SPACES MOVING IN SAID DUCTS SO THAT POWER CAN BE TRANSFERRED BY SAID FLUID COLUMNS FROM SAID DRIVING GEAR TO AT LEAST ONE OF THE ASSOCIATED PISTONLIKE BOIES AND VICE VERSA.