Patent ID: 7703502

Claim:
A method of fabricating a longitudinal frame member of a trench-forming assembly to be used to form a trench and to support a trench cover, said method comprising: providing a molten material; and extruding the molten material through a die shaped to define the frame member to comprise a vertical leg, a horizontal leg and a securing leg integral with opposite edges of the vertical leg, and an end member integral with an edge of the horizontal leg, wherein the horizontal leg comprises an engagement portion and a support portion that extend outwardly from a top edge of the vertical leg in opposite directions, and wherein the support portion and the engagement portion of the horizontal leg of the frame member are structured to support one side of a longitudinal form body during the formation of the trench and one side of the trench cover subsequent to formation of the trench, and wherein the securing leg comprises an engagement portion and a connecting portion that extend outwardly from a bottom edge of the vertical leg in opposite directions, and wherein the connecting portion extends outwardly and downwardly from the bottom edge of the vertical leg in a direction that is not parallel with the horizontal leg.