×

Method of sealing an outlet opening

  • US 5,740,829 A
  • Filed: 07/25/1995
  • Issued: 04/21/1998
  • Est. Priority Date: 07/26/1994
  • Status: Expired due to Fees
First Claim
Patent Images

1. A method of sealing an outlet opening to a branch line in a pipeline by applying a seal to the outlet opening from inside of the pipeline, said branch line being in fluid communication with said pipeline, the method comprising the steps of welding a joint-flange to the pipeline opposite to the branch line, using a jig to locate said joint-flange in relation to the pipeline so as to facilitate the welding of the joint-flange in the correct position, cutting an access opening through the wall of the pipeline opposite and in alignment with the outlet opening, inserting the seal into the pipeline through the access opening and applying the seal solely across the outlet opening interiorly of the pipeline so as to block communication between said branch line and said pipeline.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×