Coupling Assembly with Overmold Sealing Structures and Method of Forming the Same

• US 20070025811A1
• Filed: 07/26/2006
• Published: 02/01/2007
• Est. Priority Date: 07/26/2005
• Status: Abandoned Application

• Current Assignee: Colder Products Company (Dover Corporation)
• Original Assignee: Colder Products Company (Dover Corporation)
• Inventors: Wilhelm, Grant
• Application Number:
  US11/460,151
• Publication Number:
  US 20070025811A1
• Time in Patent Office: Days
• US Class Current: 403/300
• CPC Class Codes: F16L 37/34 at least one of the lift valves being of the sleeve type, i.e. a sleeve is telescoped over an inner cylindrical wall
• CPC Class Codes: F16L 37/413 the lift valve being of the sleeve type, i.e. a sleeve being telescoped over an inner cylindrical wall
• CPC Class Codes: Y10T 403/57 Distinct end coupler

Abstract

A coupling assembly includes a body and an insert. The insert is introduced into the body to create fluid tight connection therebetween. Overmold seals can be formed in both the body and the insert. In addition, overmold joints can be formed to attach various components of the coupling assembly. A recessed sealing surface on the insert can be used.

Claims

1. A coupler for a coupling assembly, the coupler comprising:

a housing defining an internal bore;

a sleeve positioned in the bore of the housing; and

a first overmold seal formed to create a sealing engagement between the sleeve and the housing.

2. The coupler of claim 1, further comprising:

a stem located in the internal bore of the housing; and

a second overmold seal formed to create a sealing engagement between the sleeve and the stem.

3. The coupler of claim 1, further comprising a third overmold seal formed to create a sealing engagement with a surface of a mating coupler.

4. The coupler of claim 1, further comprising:

a second overmold seal formed to create a sealing engagement between the sleeve and a stem; and

a third overmold seal formed to create a sealing engagement with a surface of a mating coupler.

5. The coupler of claim 4, wherein the first, second, and third overmold seals are formed using a single shot process.

6. The coupler of claim 5, wherein the sleeve is formed in a first shot of a two shot molding process, and wherein the first, second, and third overmold seals are formed on the sleeve in a second shot of the two shot process.

7. The coupler of claim 1, further comprising an adapter, wherein the adapter is coupled to the housing by an overmold joint.

19. The method of claim 1S, further comprising positioning a spring within the housing between the sleeve and the adapter to force the sleeve away from the adapter.

20. The method of claim 19, further comprising allowing the first seal of the sleeve to form a seal against the wall of the internal bore in the housing as the sleeve is moved axially within the housing.

8. A coupler for a coupling assembly, the coupler comprising:

a housing including a first end, a second end, and defining an internal bore, wherein the first end defines a recessed sealing surface;

a termination attached to the second end of the housing; and

a valve positioned in the bore of the housing.

9. The coupler of claim 8, further comprising:

a first overmold seal formed to create a sealing engagement between the valve and the housing.

10. The coupler of claim 9, wherein the valve is formed in a first shot of a two shot molding process, and wherein the first overmold seal is formed on the valve in a second shot of the two shot process.

11. The coupler of claim 9, further comprising an overmold joint formed to couple the housing and the termination.

12. A method of forming a coupler, the method comprising:

molding a sleeve of the coupler, the sleeve defining an interior surface, an exterior surface, a first end, and a second end; and

overmolding a first seal on the exterior surface of the sleeve to seal against a wall forming an internal bore in a housing of the coupler.

13. The method of claim 12, further comprising overmolding a second seal on the interior surface of the sleeve to seal against a stem of the coupler.

14. The method of claim 12, further comprising overmolding a third seal on the first end of the sleeve to seal against a surface of a mating coupler.

15. The method of claim 12, further comprising:

overmolding a second seal on the interior surface of the sleeve to seal against a stem of the coupler; and

overmolding a third seal on the first end of the sleeve to seal against a surface of a mating coupler.

16. The method of claim 15, further comprising overmolding the first, second, and third seals on the sleeve using a single shot process.

17. The method of claim 15, further comprising:

forming the sleeve in a first shot of a two shot process; and

overmolding the first, second, and third seals in a second shot of the two shot process.

18. The method of claim 12, further comprising:

placing the sleeve in the internal bore of the housing;

coupling an adapter to the housing; and

overmolding a joint between the housing and the adapter.