Patent ID: 6688071
Filing Date: 2004-02-10
Classification: B21B,B21H,E04C,E21D,Y10T

Abstract:
A poured concrete structure comprising first and second parts poured in contact one with another, comprising:(A) the first part of the structure poured about a first anchor rod, the first anchor rod being provided with a coupling having an internal thread at a boundary with a second part of the structure; (B) the second part of the structure poured about a second anchor rod, the second anchor rod being coupled to the first anchor rod by engagement with the thread of the coupling of the first anchor rod, the second anchor rod having a longitudinal axis and comprising: (a) a threaded section having a core and an external thread thereon having an external thread diameter and engaging with the coupling, the material structure of the core of the threaded section substantially coinciding with the longitudinal axis of the rod, (b) a patterned section having a core with a patterned section core diameter and a pattern comprising raised portions thereon, and (c) a transition section between and joining the threaded section and the patterned section, the transition section having an essentially smooth outer surface and having a transition section diameter that is greater than the patterned section core diameter.