Patent ID: 8910424

Claim:
A push-out screen frame including: A fixed frame member having a fixed body portion formed for mounting into an opening in a building and an arcuate flange portion extending along one edge of the fixed body portion, the cross section of the arcuate flange conforming substantially to a portion of a circle, the fixed frame member being so formed that four such fixed frame members may be formed into a rectangular fixed frame; a hinged frame member having a hinged body portion and an arcuate channel along one edge of the hinged body portion, the arcuate channel being formed to receive the arcuate flange portion of the fixed frame member for hinged connection of said hinge frame member to one of said fixed frame members; a swinging frame member having a swinging body portion, a concave arcuate closure formation along an edge of the swinging body portion, the closure formation conforming substantially to at least a part of an outer face of the arcuate flange portion of the fixed frame member, and complementary locking formations along another edge of the swinging body portion, the swinging frame member having substantially the same structure as the hinged frame member, but with part of the hinged body portion absent such that an arcuate channel is not formed, such that three such swinging frame members may be formed into a rectangular hinged frame with said hinged frame member, the locking formations being formed for latching and locking the hinged frame to the fixed frame; a latching assembly attachable to the fixed body portion of at least one of the fixed frame members and having a latching body portion and a latching formation alongside the latching body portion, the latching body portion being formed for latching to the complementary latching formation of at least one of the swinging frame members; and a locking member attachable to at least one of the swinging frame members and having a locking body and a locking formation formed for locking engagement with the latching member.