Tube fitting

Patent metadata

Field	Value
Publication number	US-10060563-B2
Application number	US-201414154377-A
Country	US
Kind code	B2
Filing date	Jan 14, 2014
Priority date	Jan 14, 2014
Publication date	Aug 28, 2018
Grant date	Aug 28, 2018

Abstract

A tube fitting including a first coupling member having at least a snap coupling, and a second coupling member having a first quick-connect side having a mating snap coupling disposed at a first end of the second coupling member, and a second quick-connect side configured for threaded engagement disposed at a second end of the second coupling member, the second end being opposite the first end, wherein the mating snap coupling is configured to engage the snap coupling to effect coupling of the first and second coupling member.

First claim

What is claimed is:

1. A tube fitting comprising:
a first coupling member having a snap coupling and a quick-connect threaded portion, the snap coupling including a first ramped engagement surface and a first ramped disengagement surface; and
a second coupling member having
a first quick-connect side having a mating snap coupling and being disposed at a first end of the second coupling member, the mating snap coupling having a second ramped engagement surface where an angle of the second ramped engagement surface is complimentary to an angle of the first ramped engagement surface, and a second ramped disengagement surface where an angle of the second ramped disengagement surface is complimentary to an angle of the first ramped disengagement surface, and
a second quick-connect side configured for threaded engagement and being disposed at a second end of the second coupling member, the second end being opposite the first end;

wherein the quick-connect threaded portion comprises one of a quarter turn thread or a half turn thread being configured to engage the second quick-connect side of the second coupling member and the mating snap coupling is configured to engage the snap coupling to effect coupling of the first and second coupling member such that the first ramped disengagement surface and the second ramped disengagement surface are configured so that engagement of the first ramped disengagement surface with the second ramped disengagement surface provides a retention force that withstands fluidic system axial separation loads, applied to the first coupling member and the second coupling member, independent of the engagement between the quick-connect threaded portion and the second quick-connect side.

2. The tube fitting of claim 1 , further comprises at least one elastomeric seal disposed between the first coupling member and the second coupling member.

3. The tube fitting of claim 2 , wherein the at least one elastomeric seal comprises a first and second elastomeric seal, each of the first and second elastomeric seal are configured to maintain at least partial system pressure within an internal passage of the tube fitting.

4. The tube fitting of claim 3 , wherein the second elastomeric seal is further configured to substantially prevent substance ingress to the first elastomeric seal.

5. The tube fitting of claim 2 , further comprising a third coupling member disposed between the first coupling member and the second coupling member wherein the at least one elastomeric seal is disposed on the third coupling member and configured to interface with the first coupling member.

6. The tube fitting of claim 5 , wherein the second coupling member is configured to engage the third coupling member and engagement between the first and second coupling members effects moving the third coupling member towards the first coupling member and compression of the at least one elastomeric seal.

7. The tube fitting of claim 1 , wherein the mating snap coupling includes a plurality of tines extending from the second coupling member and the snap coupling includes a shoulder configured to mate with the plurality of tines.

8. The tube fitting of claim 1 , wherein the first ramped engagement surface and the second ramped engagement surface of the snap coupling and the mating snap coupling are configured to produce one or more of a tactile, aural and visual indication that a predetermined compressive force is applied for sealing the tube fitting.

9. The tube fitting of claim 1 , wherein the angle of the second ramped engagement surface is substantially the same as the angle of the first ramped engagement surface, and the angle of the second ramped disengagement surface is substantially the same as the angle of the first ramped disengagement surface.

10. A tube fitting comprising:
a first fitting member having a body including a shoulder portion and a first quick-connect threaded portion, the shoulder portion includes an angled engagement surface disposed at a first angle relative to an axis of the tube fitting and an angled disengagement surface disposed at a second angle relative to the axis, the first angle being different than the second angle;
a second fitting member having a body including a gripping portion, a second quick-connect threaded portion and a plurality of tines extending from the body, the plurality of tines being configured to engage the shoulder and the first quick-connect threaded portion being configured to engage the second quick-connect threaded portion, each of the plurality of tines having a complimentary angled engagement surface and a complimentary angled disengagement surface, where the angled engagement surface and each corresponding complimentary angled engagement surface interface for assembly of the tube fitting and the angled disengagement surface and each corresponding complimentary angled disengagement surface are configured to interface such that a retention force that withstands fluidic system axial separation loads, applied to the first fitting member and the second fitting member, is applied by the interface between the angled disengagement surface and each corresponding complimentary angled disengagement surface independent of engagement between the first quick-connect threaded portion and the second quick-connect threaded portion, where each of the first quick-connect threaded portion and the second quick-connect threaded portion comprise one of complimentary quarter turn threads or complimentary half turn threads;
a third fitting member disposed between the first fitting member and second fitting member; and
at least one elastomeric seal disposed between the first fitting member and the third fitting member.

11. The tube fitting of claim 10 , wherein
the first fitting member includes an internal passage formed through the body of the first fitting member;
the second fitting member includes an internal passage formed through the body of the second fitting member; and
the third fitting member includes a body having an internal passage and being configured to be at least partially inserted into a respective internal passage of each of the first and second fitting members.

12. The tube fitting of claim 11 , wherein
the body of the third fitting member includes a sealing surface;
the internal passage of the first fitting member includes a mating sealing surface; and
the at least one elastomeric seal includes a sealing member disposed between the sealing surface and the mating sealing surface.

13. The tube fitting of claim 12 , the sealing surface of the third fitting member and the mating sealing surface are conical sealing surfaces and the at least one elastomeric seal includes a conical sealing member.

14. The tube fitting of claim 11 , wherein
the body of the third fitting member includes a flange portion having a sealing surface;
the internal passage of the first fitting member includes a mating sealing surface; and
the at least one elastomeric seal includes a sealing member disposed between the flange portion sealing surface and the mating sealing surface.

15. The tube fitting of claim 10 , wherein the second fitting member is configured to engage the third fitting member and engagement between the first and second fitting members effects moving the third fitting member towards the first fitting member and compression of the at least one elastomeric seal.

16. The tube fitting of claim 10 , wherein engagement of the plurality of tines with the shoulder is configured to produce one or more of a tactile, aural and visual indication that a predetermined compressive force i

Assignees

• Boeing Co

Inventors

• Campbell Brent
• Clements Ronald
• Mcleod Tammy
• Nguyen Son
• Sonnabend Alexandra

Classifications

• F16L2201/10

  Indicators for correct coupling · CPC title

• F16L19/005

  comprising locking means for the threaded member · CPC title

• F16L19/025

  the pipe ends having integral collars or flanges · CPC title

• F16L37/138 Primary

  using an axially movable sleeve · CPC title