Counter flow regenerative heat exchanger

Claim 1

A REGENERATIVE HEAT EXCHANGER COMPRISING A STATIONARY HOUSING, FIRST PORT MEANS PERIPHERALLY SPACED IN SAID HOUSING COMPRISING AT LEAST TWO INLET PORTS FOR THE SEPARATE PASSAGE OF HEAT IMPARTING MEDIUM AND HEAT ABSORBING MEDIUM AND AT LEAST TWO OUTLET PORTS FOR THE SEPARATE ESCAPE THEREOF, A ROTOR ROTATABLY SUPPORTED IN SAID HOUSING AND COMMUNICATING WITH SAID PORT MEANS TO ALLOW PASSAGE OF SAID MEDIA THROUGH THE ROTOR COMPRISING A MASS OF REGENERATIVE HEAT EXCHANGING MATERIAL AND A PLURALITY OF SETS OF RADIALLY EXTENDING VALVE MEANS DIVIDING SAID MATERIAL INTO A PLURALITY OF SECTORS, MEANS FOR TURNING SAID ROTOR IN A DIRECTION COUNTER TO THAT OF THE FLOW OF SAID MEDIA BETWEEN THE RESPECTIVE INLET AND OUTLET PORTS, MEANS FOR OPERATING SAID VALVE MEANS TO CONFINE EACH OF SAID MEDIA TO A SEPARATE PATH OF FLOW THROUGH SAID ROTOR, AND SECOND PORT MEANS PERIPHERALLY SPACED IN SAID HOUSING AND COMPRISING AT LEAST TWO PORTS EACH DISPOSED INTERMEDIATE AN INLET PORT AND ITS CORRESPONDING OUTLET PORT AND COMMUNICATING WITH THE PATH OF FLOW OF ONE OF SAID MEDIA, ONE OF THE PORTS OF SAID SECOND PORT MEANS BEING PROVIDED FOR THE EXTRACTION OF A PORTION OF ONE OF SAID MEDIA FROM ITS FLOW PATH FOR AN ADDITIONAL USE, AND ANOTHER OF THE PORTS OF SECOND PORT MEANS BEING PROVIDED FOR THE INTRODUCTION INTO THE FLOW PATH OF A PORTION OF THE OTHER OF SAID MEDIUM EXTRACTED FROM ITS FLOW PATH UPSTREAM OF THE POINT OF INTRODUCTION, THE EXTRACTED PORTION BEING INTRODUCED AT A POINT BETWEEN SAID CORRESPONDING INLET AND OUTLET PORTS AT WHICH BOTH THE RESPECTIVE MEDIUM PASSING THERETHROUGH AND THE INTRODUCTION PORTION OF MEDIUM ARE AT SUBSTANTIALLY THE SAME TEMPERATURES.