Rim Board Connector Rod

Abstract

A connector for connecting an add on building structure to a rim board of an original building structure, including a connector rod including an elongated hollow intermediate portion and smaller breadth externally threaded extensions extending from ends of the hollow intermediate portion. The first externally threaded extension is a length to extend through an opening in the rim board that aligns with an opening in the ledger board, and internally threaded sockets are threaded onto the externally threaded extensions at a positions straddling the rim board at one end and a supportive member within the joists of the add on building structure at the other end for holding add on building at a desired distance from the rim board and preventing rotation of the connector rod.

1 . A retrofit connector bracket for supporting an add on building structure with a ledger board to a rim board of original building structure, including
 an elongate intermediate connector rod with opposed ends,   a threaded bolt extending from each end of the connector rod of a length for extending through the rim board and through a supportive member spanning between joists of the add on building structure   a first internally threaded socket for surrounding the threaded bolt in a position for bearing against the rim board of the original building structure, and   a second internally threaded socket for surrounding the threaded bolt in a position for bearing against the supportive member spanning between floor joists of the add on building structure   a third socket for surrounding the connector rod in a position for bearing against the ledger board.   
     
     
         2 . The retro fit connector of  claim 1 , wherein the first internally threaded socket includes a cylinder defining a cylindrical opening, and a disk mounted to the cylinder, the disk defining an opening in alignment with the cylindrical opening. 
     
     
         3 . The retrofit connector of  claim 2  wherein the third socket is flexible and includes a slot allowing the socket to expand and enlarge its diameter. 
     
     
         4 . The retro fit connector of  claim 1  wherein the bolts are formed of a breadth smaller than the elongate hollow intermediate connector rod. 
     
     
         5 . The retro fit connector of  claim 1 , wherein a cylindrical spacer is mounted on the elongate hollow immediate connector rod for fitting an enlarged opening in the ledger board. 
     
     
         6 . A connector for connecting the joists of an add on building structure to a rim board of an original building structure,
 the connector comprising a connector rod including an elongated hollow intermediate portion and a first externally threaded extension extending from an end of the hollow intermediate portion,   a first externally threaded extension being of a length to extend through a hole in the rim board that aligns with a hole in the ledger,   a second externally threaded extension being of a length to extend through a supportive member attached to the joists of the add on building   a first internally threaded socket threaded onto the externally threaded extension at a position for bearing against the rim board, and   a second internally threaded socket threaded onto the externally threaded extension at a position for bearing against the supportive member for holding the add on building at a desired distance from the rim board.   
     
     
         7 . The connector of  claim 6 , wherein a third socket is moved laterally on the connector rod to a position to facilitate contact between the connector rod and ledger board. 
     
     
         8 . The connector of  claim 7 , wherein the first and second internally threaded sockets are of a smaller diameter than the elongated hollow rod.