Method of joining pipes and fittings with mechanical restraint members

Patent metadata

Field	Value
Publication number	US-2016305583-A1
Application number	US-201615130491-A
Country	US
Kind code	A1
Filing date	Apr 15, 2016
Priority date	Apr 16, 2015
Publication date	Oct 20, 2016
Grant date	—

Abstract

A method for joining a first conduit section having a longitudinally extending open first end and an inner surface with a second conduit section having a longitudinally extending end and an outer surface is provided. The method comprises:
a) inserting a first end of the second conduit section in the open first end of the first conduit section and forming a fluid tight seal between the first and second conduit sections; and, b) bonding at least a portion of the inner surface of the first conduit section to at least a portion of the outer surface of the second conduit section.

First claim

1 . A method for joining a first conduit section having a longitudinally extending open first end and an inner surface with a second conduit section having a longitudinally extending end and an outer surface, the method comprising:
a) inserting a first end of the second conduit section in the open first end of the first conduit section and forming a fluid tight seal between the first and second conduit sections; and, b) bonding at least a portion of the inner surface of the first conduit section to at least a portion of the outer surface of the second conduit section.

2 . The method of claim 1 wherein the portion of the inner surface of the first conduit section is bonded to the portion of the outer surface of the second conduit section at a plurality of discrete locations around a circumference of the second conduit section.

3 . The method of claim 1 wherein the portion of the inner surface of the first conduit section is bonded to the portion of the outer surface of the second conduit section in a continuous band around a circumference of the second conduit section.

4 . The method of claim 1 further comprising inserting a spacer between the inner surface of the first conduit section and the outer surface of the second conduit section.

5 . The method of claim 4 wherein the spacer comprises an annular member seated on the outer surface of the second conduit section and a plurality of circumferentially spaced apart longitudinally extending spacer sections.

6 . The method of claim 1 wherein the step of forming a fluid tight seal comprises inserting a sealing member between the first and second conduit sections.

7 . The method of claim 1 further compromising securing a first end of a mechanical restraint member to an outer surface of the first conduit section and securing a second end of the mechanical restraint members to an outer surface of the second conduit section whereby the mechanical restraint member extends from an outer surface of the first conduit section to an outer surface of the second conduit section.

8 . The method of claim 7 further comprising using a mechanical restraint member comprising a longitudinally extending member with first and second longitudinally spaced apart ends, an outer surface and an inner surface, each end having a cavity provided on the inner surface and defined by a perimeter wall, each cavity having a flow channel formed by at least one inner wall and an injection opening is provided at one end of the flow channel and an outlet opening is provided on another end of the flow channel.

9 . The method of claim 8 wherein each cavity has longitudinally extending side walls and the injection opening is provided on one of the longitudinally extending side walls.

10 . The method of claim 8 wherein the inner wall of the cavity comprises a concave channel provided therein.

11 . The method of claim 8 wherein the outlet opening is provided on the same side wall as the injection opening.

12 . The method of claim 9 wherein an inner surface of the perimeter wall at the first end of the mechanical restraint member is substantially planar, an inner surface of the perimeter wall at the second end of the mechanical restraint member is substantially planar, and wherein the substantially planar surfaces are offset from each other in a plane transverse to a plane of the inner surface of the perimeter wall at the first end.

13 . The method of claim 12 wherein the mechanical restraint member has a longitudinal axis, and wherein each cavity has transversely extending sidewalls that has an arcuate profile when viewed along the longitudinal axis.

14 . The method of claim 13 wherein the transversely extending sidewalls of the cavity at the first end have a different arcuate profile than the transversely extending sidewalls of the cavity at the second end.

15 . The method of claim 8 wherein a compressible material is provided on an exposed surface of the perimeter wall of each cavity.

16 . The method of claim 7 wherein a plurality of discrete mechanical restraint members are secured to the first and second conduit sections.

17 . The method of claim 16 wherein step (b) comprises bonding the mechanical restraint member to the first and second conduit sections along generally longitudinally extending portions of the outer surface of the first and second conduit sections and bonding the mechanical restraint member to a portion of the outer surface of at least one of the first and second conduit sections that extends at an angle to the generally longitudinally extending portions.

18 . The method of claim 17 wherein the mechanical restraint member is bonded to the portion of the outer surface of the at least one of the first and second conduit sections that extend generally transverse to the generally longitudinally extending portions.

19 . A kit for joining a first conduit section having an open first end and an inner surface with a second conduit section having an outer surface, the kit comprising:
a) a plurality of rigid mechanical restraint members, each mechanical restraint member comprising a longitudinally extending member with first and second longitudinally spaced apart ends, an outer surface and an inner surface, each end having a cavity provided on the inner surface and defined by a perimeter wall, each cavity having an injection opening and an outlet opening; b) an affixing member to maintain the second end of at least one of the plurality of mechanical restraint members in a position on the outer surface of the second conduit section during a bonding operation; and, c) a bonding agent.

20 . A method for joining a first conduit section having a longitudinally extending open first end and an inner surface with a second conduit section having a longitudinally extending end and an outer surface, the method comprising:
a) inserting a first end of the second conduit section in the open first end of the first conduit section and forming a fluid tight seal between the first and second conduit sections; and, b) bonding at least a portion of the inner surface of the first conduit section to at least a portion of the outer surface of the second conduit section.

Assignees

• Omachron Intellectual Property Inc

Inventors

• Conrad Wayne Ernest
• Petersen Dave

Classifications

• F16L13/116 Primary

  for socket pipes · CPC title

• F16L13/103

  Adhesive joints · CPC title

• F16L21/08

  with additional locking means (F16L21/06 takes precedence; couplings of the quick-acting type F16L37/00) · CPC title

• F16L37/0845

  by means of retaining members associated with the packing member · CPC title

• F16L23/024

  characterised by how the flanges are joined to, or form an extension of, the pipes · CPC title