US 12,422,068 B2
Composite pipe end-fitting
Daniel Clement Holman, Southampton (GB); and Fred William Merchant, Portchester (GB)
Assigned to MAGMA GLOBAL LIMITED, (GB)
Appl. No. 18/294,967
Filed by MAGMA GLOBAL LIMITED, Portsmouth (GB)
PCT Filed Jul. 21, 2022, PCT No. PCT/GB2022/051893
§ 371(c)(1), (2) Date Feb. 2, 2024,
PCT Pub. No. WO2023/012450, PCT Pub. Date Feb. 9, 2023.
Claims priority of application No. 2111284 (GB), filed on Aug. 4, 2021.
Prior Publication US 2025/0020249 A1, Jan. 16, 2025
Int. Cl. F16L 23/028 (2006.01); F16L 19/02 (2006.01); F16L 47/14 (2006.01)
CPC F16L 23/0286 (2013.01) [F16L 19/0206 (2013.01); F16L 47/14 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A composite pipe termination comprising:
a) a composite pipe formed of composite material and having an interior pipe surface, an exterior pipe surface and a pipe end, wherein composite material is a material comprising a polymer matrix and a plurality of reinforcing fibres embedded in the polymer matrix;
b) a liner, wherein the interior pipe surface is fused to the liner;
c) an annular portion of composite material having an internal surface attached to the exterior pipe surface and an external surface, wherein the external surface comprises circumferentially extending ridges;
d) a collet having an interior collet surface, wherein the collet encloses at least a part of the annular portion and wherein the interior collet surface comprises circumferentially extending grooves, and wherein the circumferentially extending ridges on the external surface of the annular portion mesh with the circumferentially extending grooves on the interior collet surface to provide axial movement blocking means which prevent or limit axial movement of the collet relative to the annular portion;
e) an annular collar which encloses and mates with the collet to prevent the collet from moving axially relative to the annular collar;
f) an end-fitting;
g) locking means which lock the end-fitting to the annular collar to prevent the end-fitting from moving axially with respect to the annular collar.