Insulated wall panel

Claim 1

A factory assembled, wall panel for interlocking with a similar adjoining wall panel, comprising a liner for attachment to the framework of a building or similar structure, a spaced subgirt cooperating therewith in confronting relationship to form a substantially rectangular closed channel, one end portion of said liner being flanged to form a female member and the other end being flanged to form a male member for attachment to complementary male and female members, respectively, of an adjoining panel, an exterior panel attached to and spaced outwardly from said subgirt and having one end portion which is flanged to provide a male member and the other end portion flanged to form a female member, said last mentioned male and female members being so positioned as to become detachably fastened to complementary female and male members, respectively, of an adjoining exterior panel as said male and female members of said liner become engaged and attached to those of an adjoining panel, said subgirt having a central, longitudinally extending channel portion formed in said spaced subgirt and terminating in coplanar wings which are parallel to said liner, the end portions of said wings being flanged inwardly towards and attached to said liner adjoining said first mentioned male and female members, closure elements cooperating with said channel portion of said subgirt to complete a rectangular enclosure, and a locking bar extending from an end of said rectangular enclosure of an adjoining panel into the end opening of said enclosure for interlocking said adjoining rectangular enclosures so as to prevent movement away from the building as a consequence of a negative wind load, the end portions of said subgirt being flanged so as to directly engage and reinforce said male and female members of said liner.