Patent ID: 8141609

Claim:
A welding machine comprising: a frame including: a pair of end supports; a top beam longitudinally spanning the end supports; the top beam being of a generally truncated V-shape in cross-section; a vacuum track assembly disposed vertically beneath the top beam and being longitudinally aligned therewith; wherein a portion of said vacuum track assembly is adapted to retain a fabric to be welded thereon; and a welding head mounted for reciprocal longitudinal travel along the top beam; an aperture defined in the welding head, wherein said aperture is generally a truncated V-shape in cross-section and said top beam is received through said aperture; and wherein the welding head is disposed vertically above the portion of the vacuum track assembly, the welding head being adapted to apply heat and pressure to the portion of the vacuum track assembly to weld the fabric retained on the portion of the vacuum track assembly.