Method for relining a combustion chamber with refractory material without disassembling the chamber

Claim 1

A METHOD FOR FORMING A COMBUSTION CHAMBER FOR RECONDITIONING APPLIANCES HAVING AN INTERNAL CAVITY ACCESS TO WHICH IS THROUGH AN ENTRANCE PASSAGEWAY HAVING A RELATIVELY SMALL CROSS-SECTIONAL CONFIGURATION COMPRISING: (A) PROVIDING A METALLIC SHEET HAVING A THICKNESS BETWEEN ABOUT 0.002 AND 0.020 INCHES SO THAT SAID METALLIC SHEET IS VERY FLEXIBLE, (B) PROVIDING SAID METALLIC SHEET WITH A PLURALITY OF CORRUGATIONS RUNNING SUBSTANTIALLY PARALLEL TO EACH OTHER AND TO THE FREE EDGES OF SAID METALLIC SHEET TO IMPART DIMENSIONAL STABILITY TO SAID METALLIC SHEET IN ONE DIRECTION AND SAID METALLIC SHEET HAVING AN OPENING THEREIN, (C) PLACING THE FREE EDGES OF SAID METALLIC SHEET INTO OVERLAPPING RELATIONSHIP TO FORM A TUBE HAVING A PREDETERMINED TRANSVERSE CROSS-SECTIONAL AREA, (D) SECURING TOGETHER THE OVERLAPPED EDGES TO RETAIN SAID METALLIC SHEET IN SAID TUBULAR FORM, (E) FOLDING SAID METALLIC SHEET IN SAID TUBULAR FORM UPON ITSELF ALONG LINES EXTENDING GENERALLY PARALLEL TO THE AXIS OF SAID METALLIC SHEET IN SAID TUBULAR FORM UNTIL THE PORTIONS DEFINING EACH HALF OF THE CIRCUMFERENCE THEREOF ARE ADJACENT TO EACH OTHER, (F) FORMING SAID FOLDED TUBULAR METALLIC SHEET INTO A GENERALLY TUBULAR UNIT HAVNG A TRANSVERSE CROSS-SECTIONAL ARE SUBSTANTIALLY SMALLER THAN THE TRANSVERSE CROSS-SECTIONAL AREA OF SAID METALLLIC SHEET IN SAID TUBULAR FORM. (G) INSERTING SAID GENERALLY TUBULAR UNIT THROUGH SAID ENTRANCE PASSAGEWAY OF SAID APPLIANCE INTO SAID IN TERNAL CAVITY THEREOF, (H) SAID ENTRANCE PASSAGEWAY HAVING A TRANSVERSE CROSSSECTIONAL AREA LARGER THAN SAID TRANSVERSE CROSS-SECTIONAL AREA OF SAID GENERALLY TUBULAR UNIT BUT SUBSTANTIALLY SMALLER THAN SAID TRANSVERSE CROSS-SECTIONAL AREA OF SAID METALLIC SHEET IN SAID TUBULAR FORM, (I) FORMING SAID GENERALLY TUBULAR UNIT WHILE WITHIN SAID INTERNAL CAVITY BACK INTO THE ORIGINAL FORM OF SAID METALLIC SHEET IN SAID TUBULAR FORM, (J) FORMING AN INTEGRAL FLANGE ON AT LEAST ONE END OF SAID METALLIC SHEET IN SADI TUBULAR FORM WHILE WITHIN SAID INTERNAL CAVITY TO IMPART STRENGTHENING CHARACTERISTICS THERETO SO THAT SAID METALLIC SHEET IN SAID TUBULAR FORM IS SELF-SUSTAINING AND (K) PROVIDING SAID METALLIC SHEET IN SAID TUBULAR FORM WHILE WITHIN SAID INTERNAL CAVITY WITH A THERMAL INSULATING MATERIAL INSERTED THROUGH SAID ENTRANCE PASSAGEWAY AND SAID OPENING IN SAID METALLIC SHEET AND PLACED IN CONTIGUOUS RELATIONSHIP WITH THE INTERNAL SURFACE OF SAID METALLIC SHEET IN SAID TUBULAR FORM.

Claim 2

A METHOD FOR FORMING A COMBUSTION CHAMBER FOR RECONDITIONING APPLIANCES HAVING AN INTERNAL CAVITY ACCESS TO WHICH IS THROUGH AN ENTRANCE PASSAGEWAY HAVING A RELATIVELY SMALL CROSS-SECTIONAL CONFIGURATION COMPRISING: (A) PROVIDING A METALLIC SHEET HAVING A THICKNESS BETWEEN ABOUT 0.002 AND 0.020 INCHES SO THAT SAID METALLIC SHEET IS VERY FLEXIBLE, (B) PROVIDING SAID METALLIC SHEET WITH A PLURALITY OF CORRUGATIONS RUNNING SUBSTANTIALLY PARALLEL TO EACH OTHER AND TO THE FREE EDGES OF SAID METALLIC SHEET TO IMPART DIMENSIONAL STABILITY TO SAID METALLIC SHEET IN ONE DIRECTION AND SAID METALLIC SHEET HAVING AN OPENING THEREIN, (C) PLACING THE FREE EDGES OF SAID METALLIC SHEET INTO OVERLAPPING RELATIONSHIP TO FORM A TUBE HAVING A PREDETERMINED TRANSVERSE CROSS-SECTIONAL AREA, (D) SECURING TOGETHER THE OVERLAPPED EDGES TO RETAIN SAID METALLIC SHEET IN SAID TUBULAR FORM, (E) FOLDING SAID METALLIC SHEET IN SAID TUBULAR FORM UPON ITSELF ALONG LINES EXTENDING GENERALLY PARALLEL TO THE AXIS OF SAID METALLIC SHEET IN SAID TUBULAR FORM UNTIL THE PORTIONS DEFINING EACH HALF OF THE CIRCUMFERENCE THEREOF ARE ADJACENT TO EACH OTHER, (F) FORMING SAID FOLDED TUBULAR METALLIC SHEET INTO A GENERALLY TUBULAR UNIT HAVNG A TRANSVERSE CROSS-SECTIONAL ARE SUBSTANTIALLY SMALLER THAN THE TRANSVERSE CROSS-SECTIONAL AREA OF SAID METALLLIC SHEET IN SAID TUBULAR FORM. (G) INSERTING SAID GENERALLY TUBULAR UNIT THROUGH SAID ENTRANCE PASSAGEWAY OF SAID APPLIANCE INTO SAID IN TERNAL CAVITY THEREOF, (H) SAID ENTRANCE PASSAGEWAY HAVING A TRANSVERSE CROSSSECTIONAL AREA LARGER THAN SAID TRANSVERSE CROSS-SECTIONAL AREA OF SAID GENERALLY TUBULAR UNIT BUT SUBSTANTIALLY SMALLER THAN SAID TRANSVERSE CROSS-SECTIONAL AREA OF SAID METALLIC SHEET IN SAID TUBULAR FORM, (I) FORMING SAID GENERALLY TUBULAR UNIT WHILE WITHIN SAID INTERNAL CAVITY BACK INTO THE ORIGINAL FORM OF SAID METALLIC SHEET IN SAID TUBULAR FORM, (J) FORMING AN INTEGRAL FLANGE ON AT LEAST ONE END OF SAID METALLIC SHEET IN SADI TUBULAR FORM WHILE WITHIN SAID INTERNAL CAVITY TO IMPART STRENGTHENING CHARACTERISTICS THERETO SO THAT SAID METALLIC SHEET IN SAID TUBULAR FORM IS SELF-SUSTAINING AND (K) PROVIDING SAID METALLIC SHEET IN SAID TUBULAR FORM WHILE WITHIN SAID INTERNAL CAVITY WITH A THERMAL INSULATING MATERIAL INSERTED THROUGH SAID ENTRANCE PASSAGEWAY AND SAID OPENING IN SAID METALLIC SHEET AND PLACED IN CONTIGUOUS RELATIONSHIP WITH THE INTERNAL SURFACE OF SAID METALLIC SHEET IN SAID TUBULAR FORM.