TODAY’S PATENT- SEISMIC CLIP FOR GRID TEE CONTROL JOINT

The Seismic clip for grid tee control joint was invented by Lee M. Tedesco, Paul D. LaLonde, Ilya Lerner on 10^th August 2010 bearing patent number US7770349B2.

The present invention relates to a clip for bridging a longitudinal gap between a pair of grid tee lengths, the clip having a cruciform shape in plan view formed by a set of four integral arms, one pair of the arms extending along a first line in opposite directions from a center of the clip, and another pair of arms extending along a line perpendicular to said first line in opposite directions from the center of the clip, said arms when oriented for installation having an inverted U-shape cross-section proportioned to fit over a respective one of four intersecting lengths of grid tees having an inverted T-shape with a reinforcing hollow bulb at its upper edge, at least one of said arms having a longitudinally extending fastener receiving slot and other of said arms having locations for receiving respective fasteners, said slot and receiving locations each being arranged to receive a fastener and allow the fastener to be anchored into the bulb of an associated tee, said slot being arranged to allow its respective grid tee length to telescope