Fitting for formation of a fluid-conducting connection

• US 7,232,158 B2
• Filed: 02/14/2005
• Issued: 06/19/2007
• Est. Priority Date: 07/09/2004
• Status: Active Grant

• Current Assignee: H Y D A C Filtertechnik GmbH
• Original Assignee: H Y D A C Filtertechnik GmbH
• Inventors: Wilkendorf, Werner
• Primary Examiner(s): Bochna; David
• Application Number:
  US11/059,342
• Publication Number:
  US 20060049626A1
• Time in Patent Office: 855 Days
• Field of Search: 285/141.1, 285/142.1, 285/139.1, 285/21.2, 285/200, 285/202, 220/643, 220/645, 220/694
• US Class Current: 285/200
• CPC Class Codes: F16L 41/02 Branch units, e.g. made in one piece, welded, riveted
• CPC Class Codes: F16L 41/08 Joining pipes to walls or pipes, the joined pipe axis being perpendicular to the plane of the wall or to the axis of another pipe F16L41/02 takes precedence

Abstract

A fitting 5 forms of a fluid-conducting connection in an opening in a plastic wall 3 of a container 1, a tank in particular, for receiving a fluid, a hydraulic fluid in particular. The fitting has a connecting element 17 embedded on the edge of the opening in the plastic of the wall 3 of the container and provided with fasteners 15 accessible from the exterior of the container 1 by which a connection part 11 of the fitting 5 may be mounted on the connecting element 17.

Claims

1. A fitting for forming a fluid-conducting connection in an opening in a plastic wall of a container receiving a fluid, comprising:

a connecting element embedded in an edge of an opening of a plastic container wall, said connecting element being a metal annular element with an annular opening enclosing and aligned with the opening in the plastic container wall and with a plurality of pouch-like recesses in a side thereof facing an interior of the container;

fasteners accessible from an exterior of the container; and

a connection part being mounted on said connecting element by said fasteners.

2. A filling according to claim 1 wherein

said connecting element is an inserted element rotomolded into the plastic container wall of the container formed by rotomolding.

3. A fitting according to claim 1 wherein

said annular element comprises a level annular surface on a side thereof associated with a container exterior.

4. A filling according to claim 3 wherein

said annular surface is substantially flush with the plastic container wall surrounding the opening therein.

5. A fitting according to claim 3 wherein

a part of said level annular surface is a sealing surface for supporting a sealing element to form a seal opposite said connection part.

6. A fitting according to claim 1 wherein

said annular element comprises bores receiving said fastener, said fasteners engaging a fastening flange of said connection part.

7. A fitting according to claim 6 wherein

said bores are blind-end bores, are internally threaded, and are spaced at regular angular distances along a circumferential edge of said annular element.

8. A fitting according to claim 7 wherein

said blind-end bores are formed in cylindrical pins projecting axially from said annular element.

9. A fitting according to claim 1 wherein

said pouch-like recesses have a depth equal to at least three fourths of an axial thickness of said annular element.

10. A fitting according to claim 9 wherein

a majority of said pouch-like recesses are substantially triangular, and are positioned in sequence to form ribs in non-recessed, adjacent areas of said annular element, with successive ribs extending diagonally in opposite directions relative to one another.

11. A fitting according to claim 10 wherein

said pouch-like recesses are positioned centrally between non-recessed outer and inner edges of said annular element.

12. A plastic container receiving a fluid, comprising:

a plastic wall having an opening thereon;

a connecting element embedded in an edge of said opening, said connecting element being a metal annular element with an annular opening enclosing and aligned with said opening in said plastic wall and with a plurality of pouch-like recesses in a side thereof facing an interior of the container;

fasteners accessible from an exterior of the container; and

a connection part being mounted on said connecting element by said fasteners.

13. A plastic container according to claim 12 wherein

said connecting element is an inserted element rotomolded into said plastic wall of the container formed by rotomolding.

14. A plastic container according to claim 12 wherein

said annular element comprises a level annular surface on a side thereof associated with an exterior of the container.

15. A plastic container according to claim 14 wherein

said annular surface is substantially flush with said plastic wall surrounding said opening therein.

16. A plastic container according to claim 14 wherein

a part of said level annular surface is a sealing surface for supporting a sealing element to form a seal opposite said connection part.

17. A plastic container according to claim 12 wherein

said annular element comprises bores receiving said fasteners, said fasteners engaging a fastening flange of said connection part.

18. A plastic container according to claim 17 wherein

said bores are blind-end bores, are internally threaded, and are spaced at regular angular distances along a circumferential edge of said annular element.

19. A plastic container according to claim 18 wherein

said blind-end bores are formed in cylindrical pins projecting axially from said annular element.

20. A plastic container according to claim 12 wherein

said pouch-like recesses have a depth equal to at least three fourths of an axial thickness of said annular element.

21. A plastic container according to claim 20 wherein

a majority of said pouch-like recesses are substantially triangular, and are positioned in sequence to form ribs in non-recessed, adjacent areas of said annular element, with successive ribs extending diagonally in opposite directions relative to one another.

22. A plastic container according to claim 21 wherein

said pouch-like recesses are positioned centrally between non-recessed outer and inner edges of said annular element.