Regenerative heat exchangers

Claim 1

A REGENERATIVE HEATER EXCHANGER COMPRISING TWO PARTS RELATIVELY ROTATABLE WITH RESPECT TO EACH OTHER ABOUT A COMMON AXIS, ONE OF SAID PARTS BEING SUBSTANTILLY CYLINDRICAL AND CONTAINING A REGENERATIVE MASS AND THE OTHER OF SAID PARTS COMPRISING DUCTS HAVING AXIAL INLETS AND OUTLETS FOR HEAT EMITTING AND HEAT ABSORBING MEDIA, SECTOR SHAPED PLATES SEPARATING SAID INLETS AND OUTLETS, SAID PLATES BEING LOCATED IN SEALING PROXIMATELY TO THE END SURFACES OF SAID CYLINDRICAL PART, AXIALLY FIXED CENTER PLATES SECURED TO SAID DUCT PART AT THE ENDS OF SAID CYLINDRICAL PART, SAID SECTOR PLTE AT ONE END OF SAID CYLINDRICAL PART BEING AXIALLY ALIGNED WITH A SECTOR PLATE AT THE OPPOSITE END THEREOF, MEANS INTERCONNECTING THE OUTER ENDS OF SAID AXIALLY ALIGNED SECTOR PLATES, SAID MEANS COMPRISING A LEVER SYSTEM INCLUDING A SUSPENSION LEVER, A FIRST ELEMENT CARRIED BY THE UPPER OF SAID SECTOR PLATES AND A SECOND ELEMENT CARRIED BY THE LOWER ONE OF SAID SECTOR PLATES, SAID TWO ELEMENTS BEING ATTACHED TO TWO HORIZONTALLY SPACED POINTS ON SAID SUSPENSION LEVER, A SUBSTANTIALLY HORIZONTAL DOUBLE-ARMED LEVER MOUNTED TO SWING ON A SUPPORT CARRIED BY SAID DUCT PART, A COUNTERWEIGHT SECURED TO ONE ARM OF SAID DOUBLE-ARMED LEVER, THE OTHER ARM OF SAID DOUBLE-ARMED LEVER BEING PIVOTALLY CONNECTED TO SAID SUSPENSION LEVER SO AS TO EXERT A FORCE ON SAID SUSPENSION LEVER TENDING TO MOVE SAID SECTOR PLATES TOWARDS EACH OTHER WHILE SAID COUNTERWEIGHT COUNTERBALANCES THE WEIGHT OF THE SECTOR PLATES AND ASSOCIATED MOVABLE PARTS.