Patent ID: 6428056
Filing Date: 2002-08-06
Classification: B21C

Abstract:
A stack of angle plates each used to join together channel shaped flanges at an end of a duct, the stack including(a) a first angle plate at the bottom of the stack and including (i) a first leg (22) having an inner side (82), an outer side (85), a top surface (90), and a bottom (100), (ii) a second leg (32) having an inner side (84), an outer side (84), a top surface, and a bottom, (iii) at least a first flange (21) projecting outwardly away from said top surface and said bottom of said first leg, projecting from one of a pair including said inner side and said outer side of said first leg (22), and including an outer edge (25) spaced apart from said top surface of said first leg, (iv) at least a second flange (43) projecting outwardly away from said top surface and said bottom of said second leg, projecting from one of a pair including said inner side and said outer side of said second leg (32), and including an outer edge (37) spaced apart from said top surface of said second leg, (v) a corner (42) integrally joining together said legs in angular relation; (b) a second angle plate stacked on top of and in registration with said first angle plate and having (i) a bottom, and (ii) a shape and dimension equivalent to said first angle plate, each of said first and second flanges including at least one support (23, 35, 39, 39A) formed in and extending outwardly from said flange, said support (23, 35, 39, 39A) including a surface (24, 72, 92, 92A) to(c) slidably contact and support said bottom of said second angle plate; and, (d) prevent said bottom of said second angle plate from nesting in said first angle plate; said angle plates being shaped and dimensioned such that said second angle plate will nest in said first angle plate if said supports are removed.