SYSTEM, METHOD AND APPARATUS FOR PULL-ACTUATED SPLINE FOR COUPLING WITH A PIPE

• US 20180306359A1
• Filed: 04/19/2018
• Published: 10/25/2018
• Est. Priority Date: 04/20/2017
• Status: Active Grant

• Current Assignee: North American Pipe Company, North American PIPE Corporation (TTWF LP)
• Original Assignee: North American PIPE Corporation (TTWF LP)
• Inventors: Yashin, Dmitry, Dean, Roy L., Clapper, Joshua E.
• Granted Patent: US 11,015,753 B2
• Time in Patent Office: Days
• CPC Class Codes: F16L 37/086 by means of latching members pushed radially by spring-like elements
• CPC Class Codes: F16L 37/0885 with access to the split elastic ring from a radial or tangential opening in the coupling
• CPC Class Codes: F16L 41/021 T- or cross-pieces F16L41/025, F16L41/026, F16L41/028 take precedence
• CPC Class Codes: F16L 47/08 with sealing rings arranged between the outer surface of one pipe end and the inner surface of the sleeve or socket, the sealing rings being placed previously in the sleeve or socket
• CPC Class Codes: F16L 47/12 with additional locking means

Abstract

A pipe system includes a tubular body having an axis, a bore extending in an axial direction, a tubular body retainer groove formed in the bore, and a tubular body exterior. Retainers are configured to be mounted in the tubular body retainer groove only from the bore of the tubular body. In one version, the retainers cannot be installed in the tubular body retainer groove from the exterior of the tubular body. The retainers are configured to be circumferentially spaced apart from each other with respect to the axis. In addition, a pipe having a pipe exterior with a pipe retainer groove is configured to receive the retainers to form a pipe assembly.

Claims

1. A pipe system, comprising:

a tubular body having an axis, a bore extending in an axial direction, a tubular body retainer groove formed in the bore, and a tubular body exterior;

retainers configured to be mounted in the tubular body retainer groove only from the bore of the tubular body, such that the retainers cannot be installed in the tubular body retainer groove from the exterior of the tubular body, and the retainers are configured to be circumferentially spaced apart from each other with respect to the axis; and

a pipe having a pipe exterior with a pipe retainer groove configured to receive the retainers to form a pipe assembly.

2. The pipe system of claim 1, wherein the retainers are configured to not make physical contact with each other in both engaged and disengaged configurations with respect to the pipe.

3. The pipe system of claim 1, wherein the retainers remain inside the tubular body in both engaged and disengaged configurations with respect to the pipe.

4. The pipe system of claim 1, wherein each retainer is actuated to a disengaged configuration by only a radial force relative to the axis, such that the retainers are not actuated to the disengaged configuration by circumferential or tangential forces relative to the axis, and the radial force is manually applied to the retainers external to the tubular body.

5. The pipe system of claim 1, wherein the retainers are identical to each other.

6. The pipe system of claim 1, wherein each retainer comprises an angular span relative to the axis, and the angular span is in a range of about 90 degrees to about 170 degrees.

7. The pipe system of claim 1, wherein the retainers are axially aligned and radially opposite each other.

8. The pipe system of claim 1, wherein each retainer comprises a handle that extends from the tubular body retainer groove through a respective aperture in the tubular body to an exterior of the tubular body.

9. The pipe system of claim 8, wherein the handle comprises a maximum dimension that is greater than a maximum dimension of the aperture.

10. The pipe system of claim 8, wherein the handle is elastic and is configured to elastically deform when installed through the aperture in the tubular body to permit installation of the retainer in the tubular body.

11. The pipe system of claim 8, wherein the retainer comprises a retainer body that is not elastic and cannot elastically deform to be installed through the aperture in the tubular body, and the retainer body is rigid and comprises a fixed, angular span in both engaged and disengaged configurations with respect to the pipe.

12. The pipe system of claim 8, wherein the handle is configured to retain the retainer in the tubular body retainer groove prior to installation of the pipe in the tubular body, and the handle engages the aperture through interference fit to prevent the handle from falling through the aperture into the tubular body when the tubular body is not engaged with the pipe.

13. The pipe system of claim 8, wherein the handle comprises an elliptical shape.

14. The pipe system of claim 1, wherein each retainer is configured to be biased radially inward relative to the axis.

15. The pipe system of claim 1, wherein each retainer comprises a retainer body and a bias member for biasing the retainer body radially inward, the bias member comprises a pair of bias members extending in substantially opposite directions, and the bias member comprises a finger having a proximal end extending in a substantially tangential direction from the retainer body of the retainer.

16. The pipe system of claim 15, wherein the finger is canted radially outward at a distal end thereof relative to the proximal end, the distal end of the finger is canted at an acute angle relative to the proximal end, and the acute angle is in a range of about 1 degree to about 20 degrees.

17. The pipe system of claim 15, wherein the finger is configured to move relative to a recess on an exterior of the retainer body as the retainer moves between an engaged position and a disengaged position with respect to the pipe.

18. The pipe system of claim 1, wherein each retainer comprises an axial leading edge and an axial trailing edge, and the axial leading edge is chamfered to facilitate initial engagement with the pipe and initial radial motion of the retainer.

19. The pipe system of claim 1, wherein the tubular body comprises an aperture extending from the exterior to the tubular body retainer groove, the aperture is generally elliptical in radial shape and generally conical in volume, and the tubular body is one of a coupling and an integrated bell pipe.

20. A pipe system, comprising:

a tubular body having an axis, a bore extending in an axial direction, a tubular body retainer groove formed in the bore, and a tubular body exterior;

a retainer configured to be mounted in the tubular body retainer groove, the retainer comprises a retainer body and a bias member for biasing the retainer body radially inward, the bias member extends from the retainer body in a generally circumferential direction with respect to the axis;

the retainer is configured to be actuated to a disengaged configuration by a radial force relative to the axis, and the radial force is manually applied to the retainer external to the tubular body; and

a pipe having a pipe exterior with a pipe retainer groove configured to receive the retainer to form a pipe assembly.