Reinforcement for a hose coupling

• US 7,249,787 B1
• Filed: 09/10/1999
• Issued: 07/31/2007
• Est. Priority Date: 09/10/1999
• Status: Expired due to Fees

• Current Assignee: Hutchinson FTS Incorporated (Cook Composites and Polymers)
• Original Assignee: Hutchinson FTS Incorporated (Cook Composites and Polymers)
• Inventors: Chisnell, Jerry H.
• Primary Examiner(s): Glessner; Brian E.
• Assistant Examiner(s): Lugo; Carlos
• Application Number:
  US09/393,482
• Time in Patent Office: 2,881 Days
• Field of Search: 285/256, 285/259, 285/258, 285/222.1, 295/07, 295/08
• US Class Current: 285/256
• CPC Class Codes: F16L 33/2076 by plastic deformation
• CPC Class Codes: Y10T 29/49911 by expanding inner annulus

Abstract

A hose coupling using at least one reinforcing ring to reinforce a hose coupling during a crimping process, the hose coupling having an inner sleeve, an outer sleeve coaxial with the inner sleeve, and a hose coaxially interposed therebetween. During the crimping process a crimping force is applied directly to the outer sleeve to form at least one depression that results in an area of peak crimp force on the inner sleeve, the depression helping to seal and lock the hose between the inner and outer sleeves. The reinforcing ring is positioned within the inner sleeve and concentric with the area of peak crimp force on the inner sleeve. Consequently, the reinforcing ring prevents the inner sleeve from deforming under the crimping force, thereby ensuring the integrity and long-term durability of the hose coupling. The reinforcing ring preferably has an inside diameter equal to or greater than an inside diameter of the inner sleeve and is disposed within at least one groove located within the inner sleeve to permit unrestricted fluid flow through the hose coupling.

Claims

1. A hose coupling having an area of peak crimp force, said hose coupling comprising:

an inner sleeve having a first end, a second end opposite said first end, and a pair of annular upset beads therebetween, said inner sleeve further having an inner diameter and an outer diameter thereon, said inner diameter having at least one groove therein, said outer diameter having at least one projection thereon;

a hose having an inner diameter positioned over said outer diameter of said inner sleeve, wherein said at least one projection of said inner sleeve interlocks with said hose to resist axial movement of said hose relative to said hose coupling;

an outer sleeve having a terminating end sandwiched between said pair of annular upset beads of said inner sleeve, said outer sleeve further having an inner diameter circumscribing said hose, said inner diameter of said outer sleeve further having at least one depression formed by a crimping operation, said at least one depression being concentric with said at least one groove of said inner sleeve, wherein said at least one depression interlocks with said hose to further resist axial movement of said hose relative to said hose coupling; and

a reinforcing ring positioned within said at least one groove in said inner diameter of said inner sleeve and concentric with said area of peak crimp force, whereby said reinforcing ring resists deformation of said inner sleeve during said crimping operation, said reinforcing ring having an inner diameter at least as great as said inner diameter of said inner sleeve, whereby said reinforcing ring permits full cross sectional fluid flow through said hose coupling.

2. The hose coupling according to claim 1, wherein said second end of said inner sleeve is flared.

3. The hose coupling according to claim 2, wherein said second end of said inner sleeve is received within a second coupling, said second coupling comprising:

a tubular body having an annular upset bead;

a cage received within and retained by said annular upset bead; and

a spring disposed within said cage, said second end of said inner sleeve being retained between said cage and said spring of said second coupling.

4. The hose coupling according to claim 1, wherein said reinforcing ring is made of a rigid material.

5. The hose coupling according to claim 4, wherein said reinforcing ring is made of steel.