Patent ID: 6651815
Filing Date: 2003-11-25
Classification: B29C,B29K,B29L,B65D,Y10T

Abstract:
A top frame assembly comprising:a frame portion having an upper member and a bottom member mounted together, the upper and bottom members defining a central opening through the top frame assembly, the upper member having a generally planar upper wall member, a first plurality of ribs extending downwardly therefrom, and a first mating surface, and the bottom member having a generally planar lower wall member, a second plurality of ribs extending upwardly therefrom, and a second mating surface, wherein the first and second mating surfaces are attached to each other and wherein at least one of the first and second mating surfaces and corresponding plurality of ribs define a receiving compartment therein; and at least one insert member disposed within the receiving compartment in an orientation generally parallel to the top member and bottom member for providing strength thereto.