US 11,054,077 B2
Systems, compositions and methods for curing leakages in pipes
Samuel Perstnev, Mercaz Shapira (IL); Boris Natapov, Ashkelon (IL); Alexander Perstnev, Ashkelon (IL); and Reonald Ukhanov, Ashkelon (IL)
Assigned to CURAPIPE SYSTEM LTD., Ashkelon (IL)
Filed by CURAPIPE SYSTEM LTD., Ashkelon (IL)
Filed on Apr. 2, 2019, as Appl. No. 16/372,431.
Application 16/372,431 is a continuation in part of application No. 15/535,717, granted, now 10,288,206, previously published as PCT/IL2015/000053, filed on Dec. 16, 2015.
Claims priority of provisional application 62/093,839, filed on Dec. 18, 2014.
Prior Publication US 2019/0226619 A1, Jul. 25, 2019
This patent is subject to a terminal disclaimer.
Int. Cl. F16L 55/16 (2006.01); F16L 55/164 (2006.01); C08L 63/04 (2006.01); F16L 55/12 (2006.01); C09K 3/10 (2006.01)
CPC F16L 55/1612 (2013.01) [C08L 63/04 (2013.01); F16L 55/12 (2013.01); F16L 55/164 (2013.01); C09K 3/1028 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A method for sealing a leakage at a remote site in a pipe, the method comprising:
a. introducing a fluid carrier composition comprising:
i. a hardener;
ii. a resin; and
iii. at least one of a multiplicity of plugging devices made of a deformable material having pores and carrying a first density enhancing dried composition including at least one polymer; and a multiplicity of cut fibers;
into the pipe at said site under pressure; and
b. allowing said fluid carrier composition to transport said at least one of said plugging devices and said cut fibers to said remote site, such that said multiplicity of plugging devices and said multiplicity of cut fibers penetrates said leakage, forming at least one hardened increased-density fiber, thereby sealing and curing said leakage.