Patent ID: 7614195
Filing Date: 2009-11-10
Classification: E04B

Abstract:
1. In a ceiling grid for a suspended ceiling intended for use in zones subject to earthquakes, the improvement comprising a joint clip that (1) in a connection in the grid between a main beam and a pair of cross beams, each of which extends from an opposite side of the main beam, (2) permits, during an earthquake, the main beam and each of the pair of cross beams to move independently of one another, without transmitting forces between or among the beams; (3) is formed of a pair of loosely connected segments movable with respect to one another longitudinally of the main beam; and (4) has whereby, by using a clip at connections along a selected main beam in the ceiling grid, one area of the ceiling grid is isolated from forces created in another area of the ceiling grid, during the earthquake.