Container with extensible pouring spout

Claim 1

A GABLE TOP CONTAINER OF PAPERBOARD OR THE LIKE COATED OVERALL WITH A THERMOPLASTIC MATERIAL THAT BECOMES AN ADHESIVE WHEN SUBJECTED TO HEAT, SAID CONTAINER COMPRISING, IN COMBINATION, A TUBULAR BODY HAVING A BOTTOM CLOSURE THEREON, A PAIR OF OPPOSED ROOF PANELS INCLINED TOWARD EACH OTHER AND OVERLYING SAID BODY, A PAIR OF OPPOSED TRIANGULAR END PANELS IN-FOLDED BETWEEN SAID ROOF PANELS FROM THE OPPOSITE GABLE ENDS FORMED BY THE LATTER, TWO PAIRS OF TRIANGULAR FOLD-BACK PANELS EACH PAIR OF WHICH IS INTEGRAL WITH A RESPECTIVE ONE OF SAID IN-FOLDED TRIANGULAR END PANELS ALONG FOLD LINES WHICH UNDERLIE SAID ROOF PANELS, SAID FOLD-BACK PANELS BEING FOLDED ADJACENT THE UNDERSIDES OF SAID ROOF PANELS, AN OUTER RIB PANEL SURMOUNTING EACH ROOF PANEL, A PAIR OF INNER RIB PANELS JOINED BY A FOLD LINE AND SURMOUNTING EACH PAIR OF TRIANGULAR FOLD-BACK PANELS AND ADJOINING END PANEL, A SANITARILY PROTECTED EXTENSIBLE POURING SPOUT HOUSED IN COLLAPSED CONDITION WITHIN SAID CONTAINER AND DEFINED IN PART BY ONE OF SAID TRIANGULAR END PANELS AND AN ADJACENT PAIR OF SAID FOLD-BACK PANELS AND AN ADJACENT PAIR OF SAID INNER RIB PANELS, SAID SPOUT ALSO BEING DEFINED BY ADJACENT PORTIONS OF SAID ROOF PANELS AND OUTER RIB PANELS, AN ABHESIVE LAYER INTERPOSED BETWEEN EACH OF SAID SPOUT-DEFINING INNER RIB PANELS AND THE ONE OF SAID OUTER RIB PANELS ADJACENT THERETO, SAID ABHESIVE LAYERS TERMINATING SHORT OF THE OUTER ENDS OF SAID INNER AND OUTER RIB PANELS AND DEFINING THEREON MARGINAL SEALING AREAS ADJACENT SAID ABHESIVE, AN UPSTANDING SEALING FLAP INTEGRAL WITH EACH ONE OF SAID OUTER RIB PANELS, EACH SAID SEALING FLAP HAVING A MARGINAL SEALING AREA DEFINED THEREON, SAID RIB PANELS AND SAID MARGINAL SEALING AREAS BEING SEALED TOGETHER INTO A TOP CLOSURE RIB SURMOUNTED BY AN UPSTANDING SEALING RIB ENCLOSING SAID EXTENSIBLE SPOUT WITH A FLUIDTIGHT SANITARY MARGIN.