Cable lock-off block with adjustable flat wedges for repairing a plurality of post-tensioned tendons

Abstract

A post-tensioning system having a cable lock off block using adjustable wedges for repairing a plurality of post-tensioned tendons. The lock off block uses a wedge body shape constructed and arranged to eliminate inherent interference created when using traditional conical wedges and conical wedge cavities. To allow for wedge adjustability, the lock off block body comprises an elongated single tapered slot. Use of the current wedge construction, in combination with a block off body having elongated tapered slot, allows a user to position individual wedges directly over each individual tendon, even if the cables are touching each other.

What is claimed is: 
     
         1 . A cable lock off block for repairing a plurality of post-tensioned tendons, comprising:
 an anchor body having a first wall or surface, an opposing second wall or surface, a closed end, an open end, and at least one tapered inner wall or surface;   an elongated slot extending a distance within said anchor body, said elongated slot having a width to accommodate the plurality of post-tensioned tendons under full tension;   one or more adjustable post-tensioned cable engaging devices constructed and arranged to engage with the individual post-tensioned tendons, said or one more adjustable post-tensioned cable engaging device having a first flat side, and a second, opposing tapered side, wherein alignment with an adjacent one or more adjustable post-tensioned cable engaging device minimizes spacing therebetween.   
     
     
         2 . The cable lock off block for repairing a plurality of post-tensioned tendons according to  claim 1 , wherein said one or more adjustable post-tensioned cable engaging device is a wedge body. 
     
     
         3 . The cable lock off block for repairing a plurality of post-tensioned tendons according to  claim 1 , wherein said wedge body includes a tendon engaging end sized and shaped to correspond with the curvature or diameter of said post-tensioned tendons. 
     
     
         4 . The cable lock off block for repairing a plurality of post-tensioned tendons according to  claim 3  wherein said wedge body includes a center line, when placed with an adjacent wedge body, said distance between said center lines is 0.5 inches. 
     
     
         5 . The cable lock off block for repairing a plurality of post-tensioned tendons according to  claim 1 , wherein said one or more adjustable post-tensioned cable engaging device is a first wedge body and a second wedge body. 
     
     
         6 . The cable lock off block for repairing a plurality of post-tensioned tendons according to  claim 5 , wherein a distance between a center line of the first wedge body and a center line of the second wedge body is 0.50 inches. 
     
     
         7 . The cable lock off block for repairing a plurality of post-tensioned tendons according to  claim 2 , wherein said wedge body is adjustably and movably positionable within said elongated slot. 
     
     
         8 . The cable lock off block for repairing a plurality of post-tensioned tendons according to  claim 2 , further including a recessed area. 
     
     
         9 . The cable lock off block for repairing a plurality of post-tensioned tendons according to  claim 8 , wherein said wedge body is disposed at least partially in the recessed area. 
     
     
         10 . The cable lock off block for repairing a plurality of post-tensioned tendons according to  claim 2 , wherein a taper angle of the tapered side of said wedge body corresponds to a taper angle of the tapered interior surface. 
     
     
         11 . The cable lock off block for repairing a plurality of post-tensioned tendons according to  claim 1 , further including a removable object secured within said slot. 
     
     
         12 . The cable lock off block for repairing a plurality of post-tensioned tendons according to  claim 1 , wherein said removable object secured within said slot is a insert plate secured within said channel at or near said open end of said anchor body. 
     
     
         13 . The cable lock off block for repairing a plurality of post-tensioned tendons according to  claim 1 , wherein said recess is centered transversally about a center of said anchor body and offset longitudinally to accommodate a bolt hole and a bolt placed perpendicular to said slot.