Back to results
US 11,953,139 B2Granted
Method, apparatus and system for lining conduits
AssigneePerma-Liner Industries, LLC
InventorKevan Taylor
Life of this patent
Estimating the term…
Abstract
Methods, apparatus or equipment and systems for lining conduits, e.g., preferably subterranean pipelines and passageways, such as sewers, with a liner impregnated with a curable resin in order to secure the conduit against ingress or egress of liquids.
Claims29
A method of repairing a hollow conduit having an inside wall surface, said method comprising:
- taking a tubular liner having a first portion and a second portion and impregnating the tubular liner with a light-activated resin;
- taking an inversion apparatus having an opening and creating a seal between the first portion of the tubular liner and the inversion apparatus to allow inversion pressure to be communicated from the inversion apparatus to the tubular liner;
- inverting the first portion of the tubular liner through the opening under pressure to create an inverted portion of the tubular liner inside the hollow conduit;
- attaching the second portion of the tubular liner to a light curing activator;
- inverting a remainder of the tubular liner into the hollow conduit so the light curing activator is pulled through the inverted portion of the tubular liner by the second portion of the tubular liner;
- and
- powering up the light curing activator to help initiate curing of the light-activated resin.
4 more elements
A method of repairing a hollow conduit having an inside wall surface, said method comprising:
- (a) taking a tubular liner having a first portion and a second portion and impregnating the tubular liner with a light-activated resin;
- (b) taking an inversion apparatus having an opening;
- (c) attaching the first portion of the tubular liner around the opening of the inversion apparatus;
- (d) inverting an inversion portion of the tubular liner through the opening under pressure to create an inverted portion of the tubular liner inside the hollow conduit;
- (e) securing a region of the tubular liner to ensure the pressure inside the inverted portion of the tubular liner is maintained;
- (f) attaching the second portion of the tubular liner to a light curing activator;
- (g) releasing the region defined in (e);
- and
- (h) inverting a remainder of the tubular liner into the hollow conduit so that the light curing activator is pulled through the inverted portion of the tubular liner by the second portion of the tubular liner.
6 more elements
A method of repairing a hollow conduit having an inside wall surface, said method comprising:
- taking a tubular liner and impregnating the tubular liner with a light-activated resin;
- taking an inversion bladder having a first portion and a second portion;
- inverting the tubular liner under pressure to an inverted position inside the hollow conduit;
- inverting the first portion of the inversion bladder under pressure to an inverted position inside the inverted tubular liner;
- attaching a light curing activator to the second portion of the inversion bladder;
- inverting a remainder of the inversion bladder into the inverted tubular liner;
- and
- powering up the light curing activator to help initiate curing of the light-activated resin.
5 more elements
A method of repairing a hollow conduit having an inside wall surface, said method comprising:
- taking a tubular liner having a first portion and a second portion and impregnating the tubular liner with a light-activated resin;
- taking an inversion bladder having a first portion and a second portion;
- taking an inversion apparatus having an opening and creating a seal between the inversion apparatus and the first portion of the tubular liner to allow inversion pressure to be communicated from the inversion apparatus to the tubular liner;
- inverting the tubular liner through the opening under pressure to an inverted position inside the hollow conduit;
- creating a seal between the inversion apparatus and the first portion of the inversion bladder to allow inversion pressure to be communicated from the inversion apparatus to the inversion bladder;
- inverting an inversion portion of the inversion bladder under pressure to an inverted position inside the inverted tubular liner and then halting the inversion of the inversion bladder;
- attaching a light curing activator to the second portion of the inversion bladder;
- inverting a remainder of the inversion bladder into the inverted liner so the second portion of the inversion bladder pulls the light curing activator through the inverted tubular liner;
- powering up the light curing activator to help initiate curing of the light-activated resin.
6 more elements
Dependencies are inferred from the claim text.