Patent ID: 9151056
Filing Date: 2015-10-06
Classification: E04C,E04D

Abstract:
1. A panel unit assembly comprising: interlocked first and second engagement members each having panel-receiving cavities for receiving and retaining edge portions of panels; two pairs of opposed transparent or translucent panels mounted in the panel receiving cavities of the first and second engagement members with an airspace disposed between the panels to form adjacent interlocked panel units; the panel units being subject to positive and negative forces that cause the engagement members to pivot with respect to each other; the first engagement member having a wall disposed between the first pair of panels and a male member projecting from the wall, the male member including a catch rail with a distal edge; the second engagement member having a back wall disposed between the panels and a pair of sidewalls defining an interlock cavity with sidewalls and an opening for receiving the male member, the male member catch rail being disposed adjacent to inner surfaces of the interlock cavity sidewalls to engage the sidewall inner surfaces and limit the pivoting movement of the engagement members; and serrations along the inner surface of the interlock cavity sidewalls positioned for engagement with the distal edge of the catch rail when the engagement members pivot with respect to each other.