Patent ID: 8844219
Filing Date: 2014-09-30
Classification: E06B

Abstract:
1. A window framing system, comprising: a plurality of pieces that are structural components of a primary frame, wherein the pieces include a sub-frame and a base, the sub-frame having a corner to receive a glazing unit, the sub-frame has an elongated portion with an L-shaped cross-section that defines said corner, the L-shaped cross-section having a) a first segment in which there are a first plurality of holes through which the sub-frame is to be secured to one of a head, jamb, and sill at a job site and a plurality of screw holes formed lengthwise through the first segment, the sub-frame capable of being secured to an abutting sub-frame of one of the plurality of pieces through the screw holes, and wherein the screw holes are configured to meet blast mitigation threats per ASTM F 1642-96 standards, and b) a second segment perpendicular to the first segment with a cavity having an enclosed cross-section formed therein that occupies a substantial portion of the second segment and runs lengthwise through a substantial part of the elongated portion, the base to be assembled with the sub-frame so as to secure the glazing unit in the corner.