Fuel filtering and heater combination

Claim 1

A FLUID FILTERING AND HEATER DEVICE COMPRISING A HOUSING HAVING A FIRST CHAMBER FORMED THEREIN COMMUNICATING WITH A FIRST INLET PORT FOR PERMITTING INGRESS OF A FIRST FLUID, A SECOND CHAMBER FORMED THEREIN COMMUNICATING WITH A FIRST OUTLET PORT FOR PERMITTING EGRESS OF SAID FIRST FLUID, A THIRD CHAMBER FORMED THEREIN FOR COMMUNICATING WITH A SECOND INLET PORT AND A SECOND OUTLET PORT FOR PERMITTING INGRESS AND EGRESS OF A SECOND FLUID, PARTITION MEANS FOR SEPARATING SAID CHAMBERS FROM EACH OTHER, MEANS LOCATED IN SAID THIRD CHAMBER AND INTERPOSED BETWEEN SAID SECOND INLET AND OUTLET PORTS FILTERING THE FLUID FLOWING THEREBETWEEN, SAID LAST NAMED MEANS INCLUDING A PAIR OF RETAINER PLATES AND A PLURALITY OF POROUS FILTER TUBES OF GOOD CONDUCTIVITY AND OF THE OUTSIDE-IN TYPE HAVING THE OPPOSITE ENDS THEREOF OPENING THROUGH SAID RETAINER PLATES, A PLURALITY OF HOLLOW NON-POROUS EXTERNALLY FLUTED MEMBERS OPERATIVELY CONNECTED TO SAID HOUSING, ONE OF WHICH IS LOCATED WITHIN AND IN CONTACT WITH A SUBSTANTIAL PORTION OF THE LENGTH OF EACH OF SAID FILTER TUBES FOR TRANSFERRING HEAT THERETO AND TO THE SECOND FLUID FLOWING ALONG SAID FLUTED MEMBERS ON THE INSIDE OF SAID FILTER TUBES TO THEREBY PREVENT THE FORMATION OF ICE ON THE FILTER TUBES AND IN THE SECOND FLUID FLOWING THROUGH SAID FILTER TUBES, SAID FLUTED MEMBERS EACH HAVING AN OPEN END AND A CLOSED END, MEANS OPERATIVELY CONNECTED TO SAID HOUSING AND LOCATED WITHIN THE HOLLOW PORTION OF EACHH OF SAID FLUTED MEMBERS FOR FORMING TWO SPEARATED FLOW PATH THEREBETWEEN, ONE OF SAID OPENINGS COMMUNICATING WITH SAID FIRST CHAMBER AND THE OTHER OF SAID OPENINGS COMMUNICATING WITH SAID SECOND CHAMBER, AND BYPASS VALVE MEANS INTERPOSED BETWEEN THE SECOND INLET PORT AND THE DOWNSTREAM SIDE OF SAID FILTER FOR PERMITTING CONTINUED FLOW OF SAID SECOND FLUID ALONG THE EXTERNAL SURFACE OF SAID FLUTED MEMBERS UNDER CLOGGED FILTERING CONDITIONS.