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A liner tube is provided for repairing a main pipe line having a lateral pipe line connected thereto. The liner tube assembly includes a liner tube impregnated with a liquid material capable of curing and hardening. The liner tube includes a gasket or junction band positioned about the juncture of the pipe lines. The gasket or bands form a tight seal between the liner tube and the pipe line. Hydrophilic containment bands are positioned over a portion of the gasket or junction band and around the main liner on either side of the juncture of the pipe lines.

Titel:	Pipeline Repair Assembly and Method Having Hydrophilic Containment Bands
Link:	View record in USPTO Patent Applications (Volltext)
Veröffentlichung:	2021
Medientyp:	Patent
Sonstiges:	Nachgewiesen in: USPTO Patent Applications Sprachen: English Document Number: 20210131603 Publication Date: May 6, 2021 Appl. No: 16/669716 Application Filed: October 31, 2019 Assignees: LMK Technologies, LLC (Ottawa, IL, US) Claim: 1. An apparatus for repairing a main pipe line and a lateral pipe line connected thereto and in communication therewith to form a pipe joint, the apparatus comprising: a liner assembly comprising a main liner member and a lateral liner tube of resin absorbent material in communication with one another through a liner juncture, the lateral liner tube being adapted to extend within the lateral pipe line and the main liner member being adapted to extend within the main pipe line; a gasket surrounding a portion of the lateral liner tube and the main liner member near the liner juncture, wherein the gasket includes a tubular portion having a first end and a second end and a flange portion extending outwardly from one of the first and second ends of the tubular portion; a first containment band surrounding the main liner member and being positioned over a first portion of the flange portion of the gasket, the first containment band adapted to be positioned between the first portion of the flange portion of the gasket and the main pipe line on one side of the liner juncture; and a second containment band surrounding the main liner member and being positioned over a second portion of the flange portion of the gasket, the second containment band adapted to be positioned between the second portion of the flange portion of the gasket and the main pipe line on another side of the liner juncture; wherein the gasket, first containment band, and second containment band are all made of a hydrophilic material capable of swelling in response to being exposed to a liquid. Claim: 2. The apparatus of claim 1 further comprising a bladder assembly comprising a main bladder tube and a lateral bladder tube, the lateral bladder tube being adapted to extend within the lateral pipe line with the lateral bladder tube being inside the lateral liner tube and the lateral liner tube being between the lateral pipe line and the lateral bladder tube, the main bladder tube being adapted to extend within the main pipe line with the main liner member being between the main pipe line and the main bladder tube. Claim: 3. The apparatus of claim 1 wherein the main liner member is formed as a tube. Claim: 4. The apparatus of claim 2 further comprising a launcher device within the main bladder tube. Claim: 5. The apparatus of claim 1 wherein at least one of the first and second containment bands has a rectangular cross-section. Claim: 6. The apparatus of claim 5 wherein at least one of the first and second containment bands has a width and a height, and the width is twice the length of the height. Claim: 7. The apparatus of claim 1 wherein each of the first and second containment bands has a first portion which overlaps the gasket and a second portion which is opposite the first portion, the first portions are separated by a first distance and the second portions are separated by a second distance, wherein the first distance is greater than the second distance. Claim: 8. The apparatus of claim 1 wherein the hydrophilic material is a hydrophilic rubber. Claim: 9. A method of repairing a main pipe line and a lateral pipe line connected thereto and in communication therewith to form a pipe juncture, the method comprising: taking a liner assembly including a main liner member with, an outside portion and a lateral liner tube in communication with one another through a liner juncture; impregnating the liner assembly with a material capable of curing and hardening; positioning a gasket having a tubular portion with a first end and a second end and a flange portion extending outwardly from one of the first and second ends of the tubular portion, the gasket positioned with the flange of the gasket being disposed on the outside portion of the main liner member; positioning a first containment band around the main liner tube between a first portion of the flange portion of the gasket and the main pipe line on one side of the liner juncture; positioning a second containment band around the main liner tube between a second portion of the flange portion of the gasket and the main pipe line on another side of the liner juncture; wherein the gasket, first containment band, and second containment band are all made of a hydrophilic material capable of swelling in response to being exposed to a liquid; moving the lateral liner tube within the lateral pipe line; and exposing the gasket, first containment band, and second containment band to a liquid that causes them to swell, thereby forming a seal between the liner assembly and the main and lateral pipe lines at the pipe juncture. Claim: 10. The method of claim 9 further comprising taking a bladder assembly including a main bladder tube and a lateral bladder tube and moving the lateral bladder tube within the lateral pipe line with the lateral bladder tube being within the lateral liner tube. Claim: 11. The method of claim 10 further comprising the steps of pressing the main liner tube and the lateral liner tube radially outwardly against the main line pipe and the lateral pipe line, permitting the curable resin to cure and harden, and removing the launcher device, the main bladder tube and the lateral bladder tube from the main pipe line. Claim: 12. The method of claim 9 wherein at least a portion of the tubular portion of the gasket is disposed within the lateral liner tube prior to inverting the lateral liner tube. Claim: 13. An apparatus for repairing a main pipe line and a lateral pipe line connected thereto and in communication therewith to form a pipe joint, the apparatus comprising: a liner assembly comprising a main liner member and a lateral liner tube of resin absorbent material in communication with one another through a liner juncture, the lateral liner tube being adapted to extend within the lateral pipe line and the main liner member being adapted to extend within the main pipe line; a single junction band surrounding a portion of the lateral liner tube and the main liner member near the liner juncture; a first containment band surrounding the main liner member and being positioned over a first portion of the single junction band, the first containment band adapted to be positioned between the first portion of the single junction band and the main pipe line on one side of the liner juncture; and a second containment band surrounding the main liner member and being positioned over a second portion of the single junction band, the second containment band adapted to be positioned between the second portion of the single junction band and the main pipe line on another side of the liner juncture; wherein the single junction band, first containment band, and second containment band are all made of a hydrophilic material capable of swelling in response to being exposed to a liquid. Claim: 14. The apparatus of claim 13 further comprising a bladder assembly comprising a main bladder tube and a lateral bladder tube, the lateral bladder tube being adapted to extend within the lateral pipe line with the lateral bladder tube being inside the lateral liner tube and the lateral liner tube being between the lateral pipe line and the lateral bladder tube, the main bladder tube being adapted to extend within the main pipe line with the main liner member being between the main pipe line and the main bladder tube. Claim: 15. The apparatus of claim 13 wherein the main liner member is formed as a tube. Claim: 16. The apparatus of claim 14 further comprising a launcher device within the main bladder tube. Claim: 17. The apparatus of claim 13 wherein at least one of the first and second containment bands has a rectangular cross-section. Claim: 18. The apparatus of claim 13 wherein at least one of the first and second containment bands has a width and a height, and the width is twice the length of the height. Claim: 19. The apparatus of claim 13 wherein each of the first and second containment bands has a first portion which overlaps the gasket and a second portion which is opposite the first portion, the first portions are separated by a first distance and the second portions are separated by a second distance, wherein the first distance is greater than the second distance. Claim: 20. The apparatus of claim 13 wherein the hydrophilic material is a hydrophilic rubber. Claim: 21. A method of repairing a main pipe line and a lateral pipe line connected thereto and in communication therewith to form a pipe juncture, the method comprising: taking a liner assembly including a main liner member with an outside portion and a lateral liner tube in communication with one another through a liner juncture; impregnating the liner assembly with a material capable of curing and hardening; positioning a single junction band disposed on the outside portion of the main liner member; positioning a first containment band around the main liner tube between a first portion of the single junction band and the main pipe line on one side of the liner juncture; positioning a second containment band around the main liner tube between a second portion of the single junction band and the main pipe line on another side of the liner juncture; wherein the single junction band, first containment band, and second containment band are all made of a hydrophilic material capable of swelling in response to being exposed to a liquid; moving the lateral liner tube within the lateral pipe; and exposing the single junction band, first containment band, and second containment band to a liquid that causes them to swell, thereby forming a seal between, the liner assembly and the main and lateral pipe lines at the pipe juncture. Claim: 22. The method of claim 21 further comprising taking a bladder assembly including a main bladder tube and a lateral bladder tube and moving the lateral bladder tube within the lateral pipe line with the lateral bladder tube being within the lateral liner tube. Claim: 23. The method of claim 22 and further comprising the steps of pressing the main liner tube and the lateral liner tube radially outwardly against the main line pipe and the lateral pipe line, permitting the curable resin to cure and harden, and removing the launcher device, the main bladder tube and the lateral bladder tube from the main pipe line. Claim: 24. The method of claim 21 wherein at least a portion of the tubular portion of the single junction band is disposed within the lateral liner tube prior to inverting the lateral liner tube. Current International Class: 16; 16; 16

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Pipeline Repair Assembly and Method Having Hydrophilic Containment Bands