Patent ID: 7856765
Filing Date: 2010-12-28
Classification: E04H

Abstract:
1. A seismic damper for permitting relative movement of supported and supporting structures in a first direction due to seismic forces, said seismic damper comprising: an upper bracket adapted to be secured to the supported structure, and including a horizontal bracket, and a pair of vertical bracket members, each of which is formed with an upper hole therethrough; a lower bracket spaced apart from said upper bracket in a second direction transverse to the first direction, adapted to be secured to the supported structure, and including a pair of vertical bracket members, each of which is formed with a lower hole therethrough; an intermediate bracket disposed between said upper and lower brackets, adapted to be secured to the supporting structure, and including a pair of vertical bracket members, each of which is aligned with a respective one of said vertical bracket members of said upper bracket and a respective one of said vertical bracket members of said lower bracket in the second direction and each of which is formed with an intermediate hole therethrough; and a link mechanism including wherein said upper hole in each of said vertical bracket members of said upper bracket has a size larger than that of said through-hole in said first end of said first support link.