Hose coupling

• US 7,322,618 B2
• Filed: 12/15/2004
• Issued: 01/29/2008
• Est. Priority Date: 12/19/2003
• Status: Active Grant

• Current Assignee: Norma Germany Gbmh
• Original Assignee: Norma Germany GmbH (NORMA Group SE)
• Inventors: Krauss, Mathias, Henrich, Detlef, Lebo, Goran, Mann, Stephan
• Primary Examiner(s): Hewitt; James M.
• Application Number:
  US11/013,757
• Publication Number:
  US 20050134039A1
• Time in Patent Office: 1,140 Days
• Field of Search: 285/242, 285/252, 285/253, 285/259
• US Class Current: 285/252
• CPC Class Codes: F16L 33/04 tightened by tangentially-arranged threaded pin and nut

Abstract

A hose coupling with a clamp which can be clamped around a longitudinal axis, wherein the edges of the clamp are located closer to the longitudinal axis than an area of the clamp located between the edges. The hose coupling further includes a pipe, wherein an end portion of the hose can be pushed onto an end portion of the pipe and can be clamped by means of the clamp. The end portion of the pipe is provided with a circumferential holding rib, wherein the end portion of the hose can be pushed past the holding rib and wherein the clamp can be clamped on the hose above the holding rib so that the hose is secured between the holding rib and the clamp. The clamp includes an elastic, circular circumferential metal clamping band of uniform thickness.

Claims

1. A hose coupling comprising;

a clamp tensionable around a longitudinal axis,

the clamp comprising an elastic, circularly bent, circumferentially extending metal clamping band of uniform thickness,

the clamping band having two margins and an intermediate portion extending from one margin to the other of the margins, wherein the margins are located closer to the longitudinal axis than the entire intermediate portion; and

a pipe having an end portion, wherein an end portion of a hose is configured to be pushable onto the end portion of the pipe and clampable by the clamp, wherein the end portion of the pipe has a circumferential holding rib over which the end portion of the hose can be pushed and at which the hose can be clamped between the holding rib and the clamp, the margins of the band being positioned adjacent both flanks of the holding rib

wherein the intermediate portion of the clamping band located between the margins of the clamping band has a distance from the hose in a tensioned state of the clamp.

2. The hose coupling according to claim 1, wherein a radially outer contour of an axial cross-section of the holding rib is uniformly arched.

3. The hose coupling according to claim 2, wherein a radially outer contour of an axial cross-section of the holding rib is circular arc-shaped and a cross-sectional contour of the clamping band between the margins thereof is circular arc-shaped, and wherein a radius of curvature of the radially outer contour of the axial cross-section of the holding rib is greater than the radius of curvature of an inner contour of an axial cross-section of the clamping band.

4. The hose coupling according to claim 2, wherein the radially outer contour of the axial cross-section of the holding rib is circular arc-shaped.

5. The hose coupling according to claim 4, wherein, when the pipe and the hose are connected, a circumference of the holding rib at an end thereof located in the hose, is smaller than a circumference at another end of the holding rib.

6. The hose coupling according to claim 1, wherein a cross-sectional contour of the clamping band between the edges thereof is uniformly radially outwardly arched.

7. The hose coupling according to claim 6, wherein the cross-sectional contour of the clamping band is circular arc-shaped.

8. The hose coupling according to claim 1, wherein the pipe is of metal.

9. The hose coupling according to claim 8, wherein the pipe is of light metal.