Sealing of regenerative air heater by incoming air

Claim 1

A HEATER COMPRISING; A HOUSING WHICH DEFINES A FIRST COMPRATMENT AND A SECOND COMPARTMENT; FIRST FLUID CIRCULATING MEANS FOR CIRCULATING A FIRST FLUID THROUGH THE FIRST COMPARTMENT; SECOND FLUID CIRCULATING MEANS FOR CIRCULATING A SECOND FLUID THROUGH THE SECOND COMPARTMENT; THE HOUSING DEFINING A PASSAGE COMMUNICATION THE FIRST COMPARTMENT AND THE SECOND COMPARTMENT, THE PASSAGE HAVING A WIDTH AND HEIGHT; A REGENERATIVE MASS; MEANS FOR ALTERNATING THE REGENERATIVE MASS BETWEEN THE FIRST COMPARTMENT AND THE SECOND COMPARTMENT VIA THE PASSAGE TO TRANSFER HEAT BETWEEN SAID FLUIDS; INJECTING MEANS COMPRISING NOZZLE MEANS APPORXIMATELY COEXTENSIVE WITH THE PASSAGE WIDTH ON OPPOSITE SIDES OF SAID REGENERATIVE MASS TO INJECT INCLINED STREAMS OF FLUID TOWARDS SAID REGENERATIVE MASS AND SECOND COMPARTMENT AND INTO THE SECOND COMPARTMENT; MEANS TO TRANSMIT A PORTION OF THE SECOND FLUID DIRECLY FROM SAID SECOND FLUID CIRCULATING MEANS TO SAID INJECTING MEANS; MEANS IN SAID SECOND FLUID CIRCULATING MEANS ADAPTED TO CREAT A PRESSURE IN THE INJECTING MEANS SUFFICIENTLY IN EXCESS OF THE PRESSURE IN THE SECOND COMPARTMENT SO THAT SAID INCLINED STREAMS OF FLUID PRESENT A FLUID BARRIER TO LEAKAGE OF THE SECOND FLUID THROUGH THE PASSAGE.