Patent ID: 6940046

Claim:
Apparatus for forming a joint between respective ends of two profile sections utilizing heat-responsive connecting material, comprising retaining means for holding the profile sections so that said ends face towards each other but with a predetermined space therebetween, positioning means for positioning the heat-responsive connecting material between the profile sections and in said space, first heating means for heating the connecting material, second, separate, heating means for heating the ends of the profile sections, means for moving the first heating means into said space for applying a first predetermined amount of heat to the connecting material, means for moving the second heating means into said space for applying a second predetermined amount of heat, different from the first predetermined amount of heat, to the ends of the profile sections, means for moving the first and second heating means out of said space after the predetermined amounts of heat have been respectively applied to the connecting material and to the ends of the profile sections, and means for moving the retaining means towards each other so that the heated ends of the profile sections move through said space and make contact with the heated connecting material whereby the connecting material bonds the ends of the profile sections together, wherein the first and second heating means comprise means operative to apply the same temperature to the connecting material and the ends of the profile sections, but for different lengths of time.