Patent ID: 7438324
Filing Date: 2008-10-21
Classification: B23D,Y10T

Abstract:
1. An apparatus comprising: a conduit embedded in concrete, the embedded conduit having an open end at a surface of the concrete, an outer diameter at the open end, an inner diameter defining a socket extending inward from the open end, and a lesser inner diameter inward of the socket; a tubular repair coupling having a male section with an outer diameter equal to the inner diameter in the socket so as to take an installed position fitted closely within the socket, and having a female section with an outer diameter greater than the outer diameter at the open end of the embedded conduit and an inner diameter equal to the outer diameter at the open end of the embedded conduit; and a new section of conduit having an outer diameter equal to the outer diameter at the open end of the embedded conduit so as to take an installed position fitted closely within the female section of the repair coupling and thereby to serve as an extension of the embedded conduit.