Pipe coupling

• US 3,877,733 A
• Filed: 06/10/1974
• Issued: 04/15/1975
• Est. Priority Date: 06/14/1973
• Status: Expired due to Term

• Current Assignee: Immanuel Straub
• Original Assignee: Immanuel Straub
• Inventors: Straub, Immanuel
• Primary Examiner(s): Arola, Dave W.
• Application Number:
  US05/478,174
• Time in Patent Office: 309 Days
• Field of Search: 285/112,111,110,105,373,419,106,104,96,102 277/74,79,70,71
• US Class Current: 285/105
• CPC Class Codes: F16L 17/04 with longitudinally split or divided sleeve
• 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

A pipe coupling with a sealing gasket enclosed in a housing intended to be applied about the pipe ends which are to be interconnected and having a substantially C-shaped cross-section with end edges constructed as sealing lips which are intended to sealingly bear against a respective one of the pipe ends. Each sealing lip is supported at the web of the sealing gasket by means of an annular or ring-shaped bead arranged at an axial spacing from the lip root or base, and wherein spaces to both sides of the ring-shaped bead are interconnected with one another by throughpassages.

Claims

1. A pipe coupling for coupling together the pipe ends of pipes, comprising a clampable housing capable of being clamped about the pipe ends intended to be interconnected, a sealing gasket enclosed in said housing and possessing a substantially C-shaped cross-section with end edges constructed as sealing lipS and intended to sealingly bear against a respective one of the pipe ends, said sealing gasket having a web, each sealing lip having a lip root and being supported at the web of the sealing gasket by means of an associated substantially ring-shaped bead arranged at the web in axial spacing from the associated lip root, each sealing lip possessing a substantially tapered configuration decreasing in thickness and extending towards a free end of minimum thickness remote from its lip root, the associated substantially ring-shaped bead only bearing against said free end of minimum thickness of said sealing lip during such time as the clampable housing is not yet clamped, and wherein said sealing gasket is provided with spaces to each side of the ring-shaped bead which are connected with one another by throughpassages.

2. The pipe coupling as defined in claim 1, wherein said ring-shaped bead is formed of one piece with the web of the gasket.

3. The pipe coupling as defined in claim 1, wherein the free end of each sealing lip is supported at an inwardly directed crown of the associated ring-shaped bead.

4. The pipe coupling as defined in claim 2, wherein each ring-shaped bead possesses a number of open-end transverse bores at its base region, said transverse bores defining said throughpassages.

5. The pipe coupling as defined in claim 1, wherein the ends of the web of the sealing gasket are each supported at an associated substantially truncated conical-shape anchoring ring which converge towards the center of the housing, each anchoring ring bearing with its larger diameter upon stops formed at said housing.

6. The pipe coupling as defined in claim 5, wherein each anchoring ring, starting from its smaller diameter, is radially lamellated to form a successive arrangement of lamellae which overlap one another in a shutter-like fashion.

7. The pipe coupling as defined in claim 5, wherein each anchoring ring at the region of its larger diameter possesses a substantially cylindrical section, a resilient expandible ring engaging with the inside of said cylindrical section, said expandible ring fixedly clamping the anchoring ring at the inside of the housing.

8. The pipe coupling as defined in claim 1, wherein said each ring-shaped bead is formed by a profile ring member inserted at the inside of the web.