公开(公告)号：US11708930B2

公开(公告)日：2023-07-25

申请号：US16615710

申请日：2018-05-28

Applicant: WN Smitgroep

Inventor： Nicolaas Petrus Frederikus Maria Smit ,  Menno Mathijs Smit

IPC: F16L55/165 ,  B29C63/00 ,  B29C63/28 ,  B29C63/34 ,  E02D29/12 ,  F16L55/18 ,  B29K33/04 ,  B29K67/00 ,  B29K201/00 ,  B29K305/12 ,  B29K307/04 ,  B29K309/08 ,  B29K311/10 ,  B29L23/00

CPC classification number: F16L55/1656 ,  B29C63/0017 ,  B29C63/28 ,  B29C63/341 ,  E02D29/124 ,  F16L55/1651 ,  F16L55/1654 ,  F16L55/18 ,  B29K2033/04 ,  B29K2067/06 ,  B29K2201/00 ,  B29K2305/12 ,  B29K2307/04 ,  B29K2309/08 ,  B29K2311/10 ,  B29L2023/006 ,  B29L2023/22 ,  E02D2300/007

Abstract: A method for renovating the interior of a hollow structure such as a sewerage pit (1) is described. The method provides an access opening (16) to the hollow structure (1); provides a plurality of material sheets (3) comprising reinforcing fibers and a curable resin composition through the access opening (16) and against a wall (11a, 11b) of the hollow structure (1); and provides an inflatable pressure means (4a, 4b) within the hollow structure (1). The pressure means (4a, 4b) are inflated against the wall (11a, 11b). A curing means (6) is then provided within the hollow structure (1) for curing the resin composition; and the resin composition is cured to harden the material sheets and provide a renovated interior of the hollow structure (1).

公开(公告)号：US20200173596A1

公开(公告)日：2020-06-04

申请号：US16615710

申请日：2018-05-28

Applicant: WN Smitgroep

Inventor： Nicolaas Petrus Frederikus Maria Smit ,  Menno Mathijs Smit

IPC: F16L55/165 ,  B29C63/34 ,  F16L55/18 ,  E02D29/12 ,  B29C63/00 ,  B29C63/28

Abstract: A method for renovating the interior of a hollow structure such as a sewerage pit (1) is described. The method provides an access opening (16) to the hollow structure (1); provides a plurality of material sheets (3) comprising reinforcing fibers and a curable resin composition through the access opening (16) and against a wall (11a, 11b) of the hollow structure (1); and provides an inflatable pressure means (4a, 4b) within the hollow structure (1). The pressure means (4a, 4b) are inflated against the wall (11a, 11b). A curing means (6) is then provided within the hollow structure (1) for curing the resin composition; and the resin composition is cured to harden the material sheets and provide a renovated interior of the hollow structure (1).