Patent ID: 7673427

Claim:
A clamp for use in securing reinforcement members to bar joists underlying corrugated roof material, comprising: at least one clamp plate insertable into a downwardly-open channel of a section of corrugated roof material, said at least one clamp plate including at least one aperture therethrough; a vertical attachment tongue projecting perpendicularly to an end of each of the at least one clamp plates, said vertical attachment tongue including at least one tongue aperture therethrough, said tongue aperture having a central axis perpendicular to a central axis of the at least one aperture through each of the at least one clamp plate; an angled bracket member having a horizontal component affixed to the end of each of the at least one clamp plate, the horizontal component extending parallel to the clamp plate and overlying the end of the clamp plate, and a vertical component extending downward from the horizontal component; and a retainer heel clip having a bolt-receiving aperture therethrough, said bolt-receiving aperture being alignable with the at least one aperture through the clamp plate, said retainer heel clip and said clamp plate adapted to securely receive a top flange of a bar joist therebetween.