Patent ID: 7478469
Filing Date: 2009-01-20
Classification: B21C,B21D,E06B,Y10T

Abstract:
1. A method for assembling a 2-piece skin door comprising a bottom skin and a top skin wherein each of the bottom and top skin's longitudinal edges have been bent and folded to complementarily hem each other in an interlocking manner to form a seam, the method including: holding the bottom skin in an upwardly open pan manner to form the full thickness of the door edge and the ends of the bent portion is folded outwardly to form a downward flange which is flush with the outer door edge; holding the top skin having longitudinal edges that form about half the thickness of the door edge in an inverted pan manner wherein its folded and hemmed edges are bent downwardly to form less than the full thickness of the door edge and the ends of the bent portion is folded inwardly to form an upward flange aligned with the corresponding edges of the bottom skin; and pushing the top skin to insert said top skin's folded edge into the bottom skin's corresponding folded edge to form said interlocking seam and thus the door edge; wherein the top skin comprises at least a protrusion from a rail edge of the top skin, where pulling means is operable to fasten onto the protrusion for pulling the top skin in alignment towards the bottom skin.