Pipe coupling

• US 6,312,025 B1
• Filed: 04/28/2000
• Issued: 11/06/2001
• Est. Priority Date: 04/30/1999
• Status: Expired due to Fees

• Current Assignee: Sikla GmbH & Company KG
• Original Assignee: Sikla GmbH & Company KG
• Inventors: Wolfsdorf, Klaus D.
• Primary Examiner(s): Dayoan, B.
• Assistant Examiner(s): Lugo, Carlos
• Application Number:
  US09/560,765
• Time in Patent Office: 557 Days
• Field of Search: 285/369, 285/335, 285/370, 285/397, 285/318, 285/104, 285/105, 285/420, 285/373, 285/236, 285/110, 411/544
• US Class Current: 285/369
• CPC Class Codes: F16L 17/02 with sealing rings arranged between outer surface of pipe and inner surface of sleeve or socket
• CPC Class Codes: F16L 17/04 with longitudinally split or divided sleeve
• CPC Class Codes: F16L 21/005 made of elastic material, e.g. partly or completely surrounded by clamping devices comprising packing adapted to sealing by fluid pressure F16L17/04, F16L11/20; hose clips F16L33/02
• CPC Class Codes: F16L 21/08 with additional locking means F16L17/035, F16L17/04, F16L21/04, F16L21/06 take precedence; screwed joints F16L19/08; couplings of the quick-acting type F16L37/00

Abstract

The invention relates to a pipe coupling having a sleeve-shaped outer body for accommodating a sealing arrangement and at least one pair of clamping elements, which is arranged adjacent to one side of the sealing arrangement inside the sleeve-shaped outer body and serves to clamp the end of an inserted pipe in place, in which case the pair of clamping elements can be restrained against the end of an inserted pipe transversely to the axis of the pipe coupling via a clamping screw passed through the sleeve-shaped outer body and is pressed apart by of a spring, and the clamping elements are guided in the restraining direction in the sleeve-shaped outer body.

Claims

1. A pipe coupling having a sleeve-shaped outer body for accommodating a sealing arrangement and at least one pair of clamping elements, which is arranged adjacent to one side of the sealing arrangement inside the sleeve-shaped outer body and serves to clamp the end of an inserted pipe in place, in which case the pair of clamping elements can be restrained against the end of an inserted pipe transversely to the axis of the pipe coupling via a clamping screw passed through the sleeve-shaped outer body and is pressed apart by means of a spring, and the clamping elements are guided in the restraining direction in the sleeve-shaped outer body.

2. The pipe coupling as claimed in claim 1, the clamping elements being clamping wedges.

3. The pipe coupling as claimed in claim 1, the clamping elements, on the side facing the end of the pipe, having at least one cutting rib for digging into the pipe.

4. The pipe coupling as claimed in claim 1, the clamping elements being clamping sleeves.

5. The pipe coupling as claimed in claim 4, the clamping sleeves having knurled engagement surfaces.

6. The pipe coupling as claimed in claim 1, the clamping elements having a polygonal cross section, the sleeve-shaped outer body having guide surfaces corresponding thereto.

7. The pipe coupling as claimed in claim 1, the sleeve-shaped outer body having a passage opening on one side for the head of the respective clamping screw and a passage opening on the other side for the threaded shank of the clamping screw, in each case of appropriate diameter.

8. The pipe coupling as claimed in claim 1, the length of the clamping screw being such that its head, in the clamped state of the pipe, is essentially accommodated by the sleeve-shaped outer body.

9. The pipe coupling as claimed in claim 1, the sleeve-shaped outer body, adjacent to the at least one pair of clamping elements, carrying a guide ring at the end faces, the guide ring having a supporting effect.

10. The pipe coupling as claimed in claim 9, the guide ring enclosing the sleeve-shaped outer body on the outside.

11. The pipe coupling as claimed in claim 1, the sleeve-shaped outer body being a sheet-metal formed part.

12. The pipe coupling as claimed in claim 1, the sealing arrangement comprising a sealing collar which is mounted laterally by supporting rings or is arranged in a sealing sleeve.

13. The pipe coupling as claimed in claim 1, the sealing arrangement comprising a sealing collar which is mounted laterally by wedge rings.

14. The pipe coupling as claimed in claim 13, the wedge rings in each case having an extension accommodated by an opening in the outer sleeve and being supported on the outside by adjacent clamping elements.

15. The pipe coupling as claimed in claim 13, the wedge rings in each case having at least one wedge formed in one piece with the wedge ring and projecting inward.