Rebar attachment device

Abstract

A rebar support system for a vertical wall uses preformed coupling devices to secure horizontal rebar structures to vertical rebar structures in mutually perpendicular orientation. A preformed coupling device may include three tube-shaped clamp members rigidly secured together.

I claim:  
     
         1 . A rebar support system for a vertical wall comprising 
 a plurality of first horizontal rebar structures oriented horizontally relative to the ground and perpendicular relative to a vertical wall to be constructed,    at least one vertical rebar structure connected perpendicularly to one of the first rebar structures at an intersection positioned inside a space where the wall is to be constructed, and    a preformed coupling device connecting the rebar structures at the intersection.    
     
     
         2 . The system of  claim 1  further comprising 
 at least one second horizontal rebar structure passing through the intersection and oriented perpendicular to the vertical and first horizontal rebar structures.  
 
     
     
         3 . The system of  claim 1 , wherein the preformed coupling device includes at least two partial tube portions.  
     
     
         4 . The system of  claim 1 , wherein the preformed coupling device includes three partial tube portions.  
     
     
         5 . The system of  claim 3 , wherein at least one of the two portions has a longitudinal opening for receiving a side section of a rebar structure.  
     
     
         6 . The system of  claim 5 , wherein the opening is defined between beveled edges configured for directing a rebar structure into the tube portion.  
     
     
         7 . A rebar support system for a vertical wall comprising 
 a plurality of first horizontal rebar structures oriented horizontally relative to the ground and perpendicular relative to a vertical wall to be constructed,    at least one vertical rebar structure connected perpendicularly to one of the first rebar structures at an intersection positioned inside a space where the wall is to be constructed, and    a coupling device connecting the rebar structures at the intersection, the coupling device including at least two partial tube portions oriented perpendicular to each other, each two portion having an opening extending along its entire length for receiving a piece of rebar.    
     
     
         8 . The system of  claim 7 , wherein the opening in the each two portion is large enough to receive a piece of rebar, but small enough so that the tube portion can retain securely a piece of rebar while pouring a cement wall.  
     
     
         9 . A coupling device for securing two or more pieces of rebar in a mutually perpendicular orientation comprising 
 three clamp members rigidly connected together, each clamp member being tube shaped and having a longitudinal axis perpendicular to the axes of the other clamp members.    
     
     
         10 . The device of  claim 9 , wherein each clamp member has an opening large enough to allow receipt of a piece of rebar through the aperture into the tube-shaped clamp, but small enough so that a piece of rebar can be securely retained inside the clamp member.  
     
     
         11 . The device of  claim 9 , wherein each clamp member is situated in a corner formed by the other clamp members, each clamp member having an opening directly opposite from the corner formed by the other clamp members.  
     
     
         12 . The device of  claim 9 , wherein each clamp member has an opening between beveled edges configured to facilitate rebar engagement.