Pipe coupling

• US 4,108,479 A
• Filed: 07/15/1977
• Issued: 08/22/1978
• Est. Priority Date: 07/21/1976
• Status: Expired due to Term

• Current Assignee: Immanuel Straub
• Original Assignee: Immanuel Straub
• Inventors: Straub, Immanuel
• Primary Examiner(s): Callaghan, Thomas F.
• Application Number:
  US05/816,269
• Time in Patent Office: 403 Days
• Field of Search: 285/105, 285/104, 285/112, 285/373, 285/340
• US Class Current: 285/112
• 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 comprising a housing which can be clamped about pipe ends which are to be interconnected, and within which housing there is enclosed an inwardly open sealing gasket possessing a substantially C-shaped axial cross-sectional configuration, and both ends of which are supported upon the outer jacket surface of a respective substantially truncated cone-shaped clamping ring, each of which is retained at its outer periphery in the axial direction within the housing and is provided with claws which engage with the periphery of the pipe ends. The clamping rings are clamped in the housing at the region of their larger diameter by means of a fixture or socket engaging both at their outer as well as their inner jacket surface.

Claims

1. A pipe coupling for coupling together the pipe ends of pipes which are to be interconnected, comprising:

a housing;

means for clamping the housing about the pipe ends intended to be interconnected;

a sealing gasket enclosed in said housing and possessing a substantially C-shaped axial cross-sectional configuration;

said sealing gasket being open towards the inside and having end faces;

a respective substantially truncated cone-shaped clamping ring having an inner jacket surface and an outer jacket surface, each said outer jacket surface supporting thereat an associated one of said end faces of said sealing gasket;

each of said clamping rings being retained at its outer periphery and in the axial direction within said housing and being provided at its inner periphery with claws engaging with the pipe ends when said housing is being clamped; and

mounting means for clamping said clamping rings within the housing at the region of their outer periphery, said mounting means engaging the outer and inner jacket surfaces of said clamping rings for preventing said clamping rings from being bent when said housing is being clamped.

2. The pipe coupling as defined in claim 1, wherein:

said mounting means comprises at least two ring segments which are resilient and limitedly contractable in their diameter;

one of said ring segments engaging at the inner jacket surface of the related clamping ring and the other ring segment engaging at the outer jacket surface of the related clamping ring.

3. The pipe coupling as defined in claim 2, wherein:

each of said ring segments comprises a snap ring having a gap; and

wherein,

the gap of one snap ring is turned with respect to the gap of the other snap ring.

4. The pipe coupling as defined in claim 2, wherein:

at least one of the ring segments possesses a substantially conical surface which bears essentially flatly upon the associated jacket surface of the related clamping ring.

5. The pipe coupling as defined in claim 2, wherein:

the ring segment engaging at the outer jacket surface possesses a substantially conical surface which flatly bears against such jacket surface and a substantially cylindrical surface which flatly bears at the inner surface of the housing.

6. The pipe coupling as defined in claim 2, wherein:

the ring segment engaging at the inner jacket surface of the related clamping ring bears along a circular line at its jacket surface.

7. The pipe coupling as defined in claim 5, wherein:

the ring segment engaging at the outer jacket surface possesses a cross-sectional configuration in the form of a triangle with inwardly directed apex.

8. The pipe coupling as defined in claim 6, wherein:

said ring segment which engages at the inner jacket surface possesses a substantially circular cross-sectional configuration.

9. The pipe coupling as defined in claim 4, wherein:

said ring segment engaging at the inner jacket surface of the clamping ring possesses a substantially conical surface which flatly bears at such jacket surface.

10. The pipe coupling as defined in claim 9, wherein:

the generatrix of the substantially conical surface bearing at the inner jacket surface of the clamping ring is shorter than the generatrix of the substantially conical surface bearing at the outer jacket surface of the clamping ring.