US 11,692,662 B2
Electrofusion fittings for lined pipes
Christopher Bruce, Bathgate (GB); Chris Woods, Cowdenbeath (GB); Andrew Cupples, Dennyloanhead (GB); and Ross McSkimming, Erskine (GB)
Assigned to Subsea 7 Limited, Sutton (GB)
Appl. No. 16/978,622
Filed by Subsea 7 Limited, Sutton (GB)
PCT Filed Mar. 5, 2019, PCT No. PCT/GB2019/050611
§ 371(c)(1), (2) Date Sep. 4, 2020,
PCT Pub. No. WO2019/171045, PCT Pub. Date Sep. 12, 2019.
Claims priority of application No. 1803673 (GB), filed on Mar. 7, 2018.
Prior Publication US 2020/0408349 A1, Dec. 31, 2020
Int. Cl. F16L 58/18 (2006.01); B29C 65/34 (2006.01); B29C 65/36 (2006.01); B29C 65/00 (2006.01); B29D 23/00 (2006.01); F16L 13/02 (2006.01); F16L 47/03 (2006.01)
CPC F16L 58/181 (2013.01) [B29C 65/3468 (2013.01); B29C 65/3476 (2013.01); B29C 65/3604 (2013.01); B29C 66/5221 (2013.01); B29C 66/612 (2013.01); B29D 23/003 (2013.01); F16L 13/0263 (2013.01); F16L 47/03 (2013.01)] 24 Claims
OG exemplary drawing
 
1. A liner bridge for a lined pipeline, the liner bridge comprising:
a tubular wall;
at least one bore extending through the wall from an inward side to an outward side;
at least one electrofusion element;
a terminal fitted in the or each bore and having a. contact end exposed to the inward side of the wall for conducting electricity to the or each electrofusion element; and
a sealing interface between the terminal and the surrounding bore;
wherein the sealing interface comprises at least one projecting formation of the terminal extending radially outwardly with respect to the bore and at least one complementary formation of the bore extending radially inwardly with respect to the bore, engaged with the or each projecting formation of the terminal;
and wherein the tubular wall is of resilient material that conforms to the or each projecting formation of the terminal.