Patent ID: 7246826

Claim:
A pipe lap joint, comprising: an inside pipe having a pipe end; an outside pipe having a pipe end with a sealing zone extending over at least a portion of said inside pipe end and including a collapsible sealing slot; said sealing slot having a first sidewall with a first tooth and recess, a second sidewall with a second tooth and recess, and an end wall, wherein said first and second sidewalls are generally parallel to one another and are arranged such that said first tooth opposes said second recess in a generally complementary fashion, and said second tooth opposes said first recess in a generally complementary fashion; and a band clamp extending over at least a portion of said sealing zone, wherein tightening of said band clamp causes said sealing slot to collapse such that said first tooth is received by said second recess and said second tooth is received by said first recess.