Method of making reinforced corrugated hose

Claim 1

THE METHOD OF MANUFACTURING A SPIRALLY REINFORCE HOSE AND MOLDING SAID HOSE IN A MOLD HAVING A PITCH DEFINED BY A SPIRAL TROUGH IN THE MOLD AND HAVING A DIAMETER DEFINED BY THE DIAMETER OF CRESTS IN THE MOLD AND BY THE DIAMETER OF TROUGHS IN THE MOLD COMPRISING THE STEPS OF: PLACING A SPIRAL REINFORCING MEMBER HAVING AXIALLY SPACED TURNS OVER A RADIALLY EXPANDABLE FORM HAVING ON THE SURFACE THEREOF A SPIRAL GUIDE OF A PITCH IDENTICAL TO THE PITCH DEFINED BY THE SPIRAL TROUGH OF THE MOLD; DIAMETRICALLY EXPANDING SAID FORM TO A DIAMETER GREATER THAN THE DIAMETER DEFINED BY THE CRESTS OF THE MOLD BUT LESS THAN THE DIAMETER DEFINED BY THE TROUGH OF THE MOLD AND ALIGNING SAID REINFORCING MEMBER WITH THE AXIALLY SPACED TURNS OF THE REINFORCING MEMBER CORRESPONDING WITH THE HELICAL GUIDE ON THE FORM; SECURING TO THE SURFACE OF SAID SPIRAL REINFORCINGG MEMBER A RETENTION MEMBER THEREBY HOLDING THE SPACED TURNS OF THE SPIRAL REINFORCING MEMBER IN A FIXED PITCH AND DIAMETRIC RELATIONSHIP; SEPARATELY FORMING A CYLINDRICALLY SHAPED TUBE FROM ELASTOMERIC RUBBER AND HAVIN A DIAMETER LESS THAN THE DIAMETER OF A CYLINDER DESCRIBED BY THE INNER SURFACE OF THE SECURED SPIRAL REINFORCING MEMBER; PLACING A LENGTH OF SAID ELASTOMERIC TUBE AROUND A HOLLOW MANDREL HAVING ORIFICES AND TO WHICH HOLLOW MANDREL PORTION IS ATTACHED A FLUID PRESSURE SOURCE; PLACING THE SECURED SPIRAL REINFORCEMENT OVER THE ELASTOMERIC TUBE; ENCLOSING THE ELASTOMERIC TUBE WITH THE SECURED SPIRAL REINFORCING MEMBER THEREOVER BETWEEN CORRUGATED MOLD HALVES HAVING SMOOTH CYLINDRICAL END PORTIONS WITH THE TURNS OF THE SPIRAL REINFORCING MEMBER IN ALIGMENT WITH THE TROUGHS OF THE MOLD, THE CRESTS OF WHICH MOLD HALVES ARE OF A DIAMETER LESS THAN THE DIAMETER OF THE SPIRAL REINFORCING MEMBER BUT GREATER THAN THE DIAMETER OF THE ELASTOMERIC TUBE AND THE TROUGHS OF WHICH ARE OF A DIAMETER GREATER THAN THE DIAMETER OF THE SECURED REINFORCING MEMBER; SIMULTANEOUSLY APPLYING HEAT AND FLUID PRESSURE TO THE INTERIOR OF THE ELASTOMERIC TUBE THEREBY FORCING SAID ELASTOMERIC TUBE TO CONFORM TO THE MOLD INTERIOR AND COMPLETELY EMBEDDING SAID SPIRAL REINFORCEMENT WITHIN THE ELASTOMERIC TUBE AND CONTINUING SAID HEATING UNTIL COMPONENT PARTS ARE COMPLETELY VULCANIZED INTO A UNITARY HOSE STRUCTURE.

Claim 2

THE METHOD OF MANUFACTURING A SPIRALLY REINFORCE HOSE AND MOLDING SAID HOSE IN A MOLD HAVING A PITCH DEFINED BY A SPIRAL TROUGH IN THE MOLD AND HAVING A DIAMETER DEFINED BY THE DIAMETER OF CRESTS IN THE MOLD AND BY THE DIAMETER OF TROUGHS IN THE MOLD COMPRISING THE STEPS OF: PLACING A SPIRAL REINFORCING MEMBER HAVING AXIALLY SPACED TURNS OVER A RADIALLY EXPANDABLE FORM HAVING ON THE SURFACE THEREOF A SPIRAL GUIDE OF A PITCH IDENTICAL TO THE PITCH DEFINED BY THE SPIRAL TROUGH OF THE MOLD; DIAMETRICALLY EXPANDING SAID FORM TO A DIAMETER GREATER THAN THE DIAMETER DEFINED BY THE CRESTS OF THE MOLD BUT LESS THAN THE DIAMETER DEFINED BY THE TROUGH OF THE MOLD AND ALIGNING SAID REINFORCING MEMBER WITH THE AXIALLY SPACED TURNS OF THE REINFORCING MEMBER CORRESPONDING WITH THE HELICAL GUIDE ON THE FORM; SECURING TO THE SURFACE OF SAID SPIRAL REINFORCINGG MEMBER A RETENTION MEMBER THEREBY HOLDING THE SPACED TURNS OF THE SPIRAL REINFORCING MEMBER IN A FIXED PITCH AND DIAMETRIC RELATIONSHIP; SEPARATELY FORMING A CYLINDRICALLY SHAPED TUBE FROM ELASTOMERIC RUBBER AND HAVIN A DIAMETER LESS THAN THE DIAMETER OF A CYLINDER DESCRIBED BY THE INNER SURFACE OF THE SECURED SPIRAL REINFORCING MEMBER; PLACING A LENGTH OF SAID ELASTOMERIC TUBE AROUND A HOLLOW MANDREL HAVING ORIFICES AND TO WHICH HOLLOW MANDREL PORTION IS ATTACHED A FLUID PRESSURE SOURCE; PLACING THE SECURED SPIRAL REINFORCEMENT OVER THE ELASTOMERIC TUBE; ENCLOSING THE ELASTOMERIC TUBE WITH THE SECURED SPIRAL REINFORCING MEMBER THEREOVER BETWEEN CORRUGATED MOLD HALVES HAVING SMOOTH CYLINDRICAL END PORTIONS WITH THE TURNS OF THE SPIRAL REINFORCING MEMBER IN ALIGMENT WITH THE TROUGHS OF THE MOLD, THE CRESTS OF WHICH MOLD HALVES ARE OF A DIAMETER LESS THAN THE DIAMETER OF THE SPIRAL REINFORCING MEMBER BUT GREATER THAN THE DIAMETER OF THE ELASTOMERIC TUBE AND THE TROUGHS OF WHICH ARE OF A DIAMETER GREATER THAN THE DIAMETER OF THE SECURED REINFORCING MEMBER; SIMULTANEOUSLY APPLYING HEAT AND FLUID PRESSURE TO THE INTERIOR OF THE ELASTOMERIC TUBE THEREBY FORCING SAID ELASTOMERIC TUBE TO CONFORM TO THE MOLD INTERIOR AND COMPLETELY EMBEDDING SAID SPIRAL REINFORCEMENT WITHIN THE ELASTOMERIC TUBE AND CONTINUING SAID HEATING UNTIL COMPONENT PARTS ARE COMPLETELY VULCANIZED INTO A UNITARY HOSE STRUCTURE.