Patent ID: 9719620
Date: 2017-08-01
CPC Classifications: A01C,F16L

Claim:
1. A quick coupling comprising: a flexible tube having an outer surface; an outer annular coupling element having a quick disconnect attachment feature and an inner surface defining a central bore, the inner surface including a convex detent formed therealong; and an annular insert having at least two arcuate sections forming an outer annular surface received within the central bore and an inner annular surface defining a cavity with a diameter sized to receive an end of the flexible tube, the inner surface including a plurality of spaced barb elements engageable with the outer surface of the flexible tube for retaining the end of the flexible tube within the cavity of the annular insert, the annular insert including a groove on the outer surface thereof; wherein the convex detent formed along the inner surface of the outer annular coupling is engageable with the groove of the outer annular surface of the annular insert for removably retaining the annular insert within the central bore of the outer annular coupling element, wherein a space is formed on each side of the convex detent and its corresponding groove when the detent engages the groove in an engaged position, in the engaged position the space is formed between the outer annular coupling element and the annular insert, such that the only contact between the outer annular coupling element and the annular insert is via the engagement of the convex detent and the groove, wherein each barb element comprises an annular rib with a pointed protrusion angled to hold the flexible tube in place, such that each barb element is positioned against an outer surface of the flexible tube when the annular insert and the flexible tube are in an engaged position, and wherein a space is formed on each side of each barb element between the annular insert and the flexible tube, wherein the quick disconnect attachment feature is a bayonet coupling comprising male tabs and female slots, and wherein in the engaged position, an apex of the convex detent is positioned between the plurality of spaced barb elements and the apex abuts the deepest portion of the groove.