US 12,247,687 B2
Assembly for relining a junction between a branch pipeline and a main pipeline, and for relining a part of or the whole branch pipeline
Mogens Pagter Rasmussen, Engesvang (DK); Bent Sloth Rasmussen, Kolding (DK); and Anna Amalie Larsen, Farvang (DK)
Assigned to Per Aarsleff A/S, Viby J (DK)
Filed by Per Aarsleff A/S, Viby J (DK)
Filed on Nov. 8, 2023, as Appl. No. 18/387,972.
Application 18/387,972 is a continuation of application No. 17/483,023, filed on Sep. 23, 2021, granted, now 11,859,753.
Application 17/483,023 is a continuation of application No. 16/476,418, granted, now 11,131,418, issued on Sep. 28, 2021, previously published as PCT/EP2018/050338, filed on Jan. 8, 2018.
Claims priority of application No. 17150535 (EP), filed on Jan. 16, 2017; and application No. 17205047 (EP), filed on Dec. 1, 2017.
Prior Publication US 2024/0077164 A1, Mar. 7, 2024
Int. Cl. F16L 55/165 (2006.01); F16L 55/179 (2006.01); B29C 35/08 (2006.01); B29C 63/34 (2006.01); F16L 55/18 (2006.01); F16L 55/26 (2006.01); F16L 55/40 (2006.01)
CPC F16L 55/1654 (2013.01) [F16L 55/179 (2013.01); B29C 2035/0833 (2013.01); B29C 63/34 (2013.01); F16L 55/18 (2013.01); F16L 55/265 (2013.01); F16L 55/40 (2013.01)] 17 Claims
OG exemplary drawing
 
11. A method of installing a seal onto a junction between a branch pipeline and a main pipeline, said method comprising providing a seal installation device comprising:
an elongated housing having a cylindrical wall and extending between a first end and a second end, said cylindrical wall defining an opening through said cylindrical wall located between said first end and said second end,
a pivotable plate having a curved shape and being located within the housing adjacent the opening, the pivotable plate defining a first edge which is hingedly attached to the cylindrical wall opposite the opening and a second edge opposite the first edge, and
an inflatable, expandable and flexible bladder enclosing said cylindrical wall, said flexible bladder having a first cylindrical part extending between said first end of said cylindrical wall and said second end of said cylindrical wall, and a second cylindrical part extending from said first cylindrical part at said opening, said flexible bladder defining a deflated position and said second cylindrical part is stored in an inverted shape within said cylindrical wall, said method further comprising the steps of:
causing said flexible bladder to assume an inflated position in which said first cylindrical part applies a pressure force onto said main pipeline and said second cylindrical part applies a pressure force onto said branch pipeline, pivoting said pivotable plate to assume a first position in which said second edge is located at said cylindrical wall opposite said opening, inserting a light curing device into said seal installation device and light curing said main pipeline, pivoting said pivotable plate to assume a second position in which said second edge is located at said opening, and inserting a light curing device into said seal installation device and light curing said branch pipeline.