IP Library Granted Patent US 8,418,728
Granted Patent B1
US 8,418,728 · App. 12/496,308 · Granted Apr 16, 2013

Method of adhering structural elements to polyethylene and like materials

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Quick Facts
Patent No.
US 8,418,728
App. No.
12/496,308
Granted
Apr 16, 2013
Kind
B1
Abstract

Methods of adhering structural elements to polyethylene and like materials are provided. A two-part modified epoxy adhesive is used in the repair of a main/lateral pipe junction, in connecting PE pipe to form a pipe line, in providing an access to the interior bore of a buried pipe, and other applications of requiring a buried structural element be adhered to a PE or like material.

Claims (35)

1. A method of making or repairing a junction between a main sewer pipe and a lateral sewer pipe, the main sewer pipe having outer peripheral surface of PE, the method of making or repairing the junction comprising:

providing a two-part modified epoxy adhesive;

providing a connection assembly having a saddle and a connection pipe extending upwardly therefrom adapted to receive the lateral sewer pipe;

attaching the connection assembly to the main sewer pipe with the saddle surrounding a portion of the outer peripheral surface of the main sewer pipe being made of PE, the epoxy adhesive being disposed between the saddle and the main sewer pipe;

allowing the epoxy to cure and bond the connection assembly to the main sewer pipe; and

wherein the modified epoxy adhesive maintains a high peel strength and flexibility when cured.

2. The method of claim 1 wherein the two-part modified epoxy adhesive is Flex-Weld brand modified epoxy adhesive from Manus Products, Inc.

3. The method of claim 1 wherein the main pipe is wet or partially submerged in water.

4. The method of claim 1 further comprising the step of accessing the main pipe through vacuum excavation.

5. The method of claim 1 wherein the saddle snaps onto the main pipe surrounding more than one half of the main pipe or extending beyond a spring line of the main pipe.

6. A method of providing access to an interior bore of a buried lateral pipe having an outer peripheral surface comprising a thermoplastic, the method comprising:

providing a two-part modified epoxy adhesive;

providing a connection assembly having a saddle and a connection pipe extending upwardly therefrom;

forming an access opening in the buried lateral pipe;

attaching the connection assembly to the thermoplastic surface of the buried lateral pipe with the saddle surrounding a portion of the outer peripheral surface of the pipe, the connection pipe being aligned with the access opening and the epoxy adhesive being disposed between the saddle and the burred pipe; and

allowing the epoxy to cure and bond the buried pipe to the connection assembly;

wherein the modified epoxy adhesive maintains a high peel strength and flexibility when cured.

7. The method of claim 6 wherein the two-part modified epoxy adhesive is Flex-Weld brand modified epoxy adhesive from Manus Products, Inc.

8. The method of claim 6 further comprising:

providing an access pipe having a first end and an opposite second end; and

joining and first end of the access pipe with the connection pipe of the connection assembly.

9. A method of providing access to an interior bore of a buried pipe having an outer peripheral surface and an interior lining with a thermoplastic portion of the interior lining being exposed, the method comprising:

providing a two-part modified epoxy adhesive;

providing a connection assembly having a saddle and a connection pipe extending laterally therefrom;

forming an access opening in the portion of the exposed interior lining;

attaching the connection assembly to the thermoplastic portion of the exposed interior lining with the saddle, the connection pipe being aligned with the access opening and the epoxy adhesive being disposed between the saddle and the interior lining; and

allowing the epoxy to cure and bond the interior lining to the connection assembly;

wherein the modified epoxy adhesive maintains a high peel strength and flexibility when cured.

10. The method of claim 9 wherein the two-part modified epoxy adhesive is Flex-Weld brand modified epoxy adhesive from Manus Products, Inc.

11. The method of claim 9 wherein the exposed interior lining having a bonding surface comprised of PE.

12. The method of claim 11 wherein the exposed interior lining is made from PE pipe.

13. The method of claim 11 wherein the exposed interior lining is made from a cured-in-place lining.

14. The method of claim 11 further comprising:

providing an access pipe having a first end and an opposite second end; and

joining and first end of the access pipe with the connection pipe of the connection assembly.

Assignments (2)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jul 17, 2012
From: LMK ENTERPRISES, INC.
To: LMK TECHNOLOGIES, LLC
Reel/Frame 028571/0118 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Aug 3, 2009
From: KIEST, LARRY W., JR.
To: LMK ENTERPRISES, INC.
Reel/Frame 023040/0580 →