Patent ID: 7028716
Filing Date: 2006-04-18
Classification: F16L

Abstract:
1. A method for rehabilitating an existing pipe in a sewage piping facility having a first existing pipe intersecting with a second existing pipe, comprising the steps of: providing a rehabilitating pipe having a flange at one end thereof; laying the rehabilitating pipe inside the first existing pipe so that the flange of the rehabilitating pipe contacts an inner circumferential surface portion of the second existing pipe surrounding a portion where the first and second existing pipes intersect; preparing a flanged tubular member having a tubular part and a flange part on one end of the tubular part; adhesively fixing the flange part of the flanged tubular member to the inner circumferential surface of the second existing pipe so that the flange part covers the flange of the rehabilitating pipe and the inner circumferential surface portion of the second existing pipe; and inserting the tubular part of the flanged tubular member into the rehabilitating pipe and adhering the tubular part to the rehabilitating pipe to thereby seal a gap between an inner circumference of the first existing pipe and an outer circumference of the rehabilitating pipe.