High-pressure end fitting

• US 4,863,197 A
• Filed: 04/10/1989
• Issued: 09/05/1989
• Est. Priority Date: 03/03/1988
• Status: Expired due to Fees

• Current Assignee: Ingersoll-Rand Company (Trane Technologies plc)
• Original Assignee: Ingersoll-Rand Company (Trane Technologies plc)
• Inventors: Munoz, Jose P.
• Primary Examiner(s): NOT, DEFINED
• Application Number:
  US07/335,565
• Time in Patent Office: 148 Days
• Field of Search: 285/14, 285/13, 285/256, 285/259
• US Class Current: 285/14
• CPC Class Codes: F16L 33/2076 by plastic deformation

Abstract

The fitting terminates an end of a high-pressure hose and comprises a coupling having a portion thereof inserted in the hose end, and a sleeve, enveloping both the hose end and the coupling inserted portion, crimped onto the hose end. A void obtains within the sleeve at the end of the hose, and a capillary hole formed in the sleeve (and in a circumferential wall of the coupling) communicates the void with the external surface of the sleeve. The hole, a weep hole, safely relieves fluid leakage or seepage from the void.

Claims

1. A high-pressure hose end fitting, comprising:

a hose having a terminal end;

a hose coupling inserted in said terminal end;

a crimp sleeve mounted on said terminal end;

said coupling has a first hose-receiving limb, a second external-connection limb, and a radially extending annular land intermediate said limbs;

said first limb being engaged with an inner circumferential surface of said hose to form an interface therewith at said terminal end of said hose;

said first limb and said terminal end of said hose are confined within said crimp sleeve, and said crimp sleeve is crimped on said end of said hose;

said land including a circumferential wall axially extending therefrom and abutting said terminal end;

said land and said interface being spaced-apart by said circumferential wall to define a void therebetween; and

means for communicating said void with an external surface of said sleeve.

2. A high-pressure hose end fitting, according to claim 1, wherein;

said communicating means comprises a capillary hole formed through said sleeve and said wall and opening into said void, whereby fluid leakage at said interface is relieved at said void and vented therefrom by said hole.

3. A high pressure hose end fitting, comprising:

a hose having inner and outer circumferential surfaces terminating at a terminal end;

a coupling having a hose receiving limb including a ribbed surface engaged within said inner circumferential surface of said hose to form an interface therewith, said coupling having a radially extending annular land including a circumferential wall axially extending therefrom and abutting said terminal end adjacent said outer circumferential surface, and defining an annular void between said interface and said land; and

a sleeve crimped on said outer circumferential surface, said sleeve enclosing said circumferential wall and said terminal end, said sleeve and said circumferential wall including vent means formed therethrough for venting said annular void, whereby fluid leakage at said interface is relieved at said void and vented therefrom through said vent means.