Patent ID: 9429262
Filing Date: 2016-08-30
CPC Classification: F16L,Y10T

Claim Text:
1. A coupling for conveying fluid between a component of a fluid system and an insertion end of a conduit, an outer surface of the insertion end of the conduit being smooth and free of grooves, flanges and beads, said coupling comprising: a first member having an exterior surface and an interior surface, the interior surface of the first member defining a first passageway through the first member, the first passageway extending from an entry end to a securing end of the first member, the interior surface of the first member further comprising a recess defining portion, wherein the recess defining portion defines a circular recess and has a generally J-shaped cross-sectional perimeter having a long face, a short face and a first angled face, the first angled face being disposed at an obtuse angle with respect to the short face; a second member in snap fit engagement with the first member, the second member having an exterior surface and an interior surface, the interior surface of the second member defining a second passageway through the second member, the second passageway extending from an attachment end to an opposite end of the second member, the interior surface of the second member further defining an annular recess at the attachment end of the second member, the interior surface of the second member further defining a plurality of tapered inward protrusions and a stop surface, wherein the coupling comprises a longitudinal axis, the tapered inward protrusions being generally parallel with the longitudinal axis, each of the tapered inward protrusions comprising a radially inward protruding inclined region, a radially inward protruding flat region which has a planar surface, and two peripheral edges forming sidewalls of the protrusion, each peripheral edge comprising an inward radial dimension, a gripping ring having an inner edge defining a series of teeth, the gripping ring being disposed within the circular recess of the first member; a support ring being disposed within the circular recess of the first member, the support ring having a proximal face that abuts the gripping ring and a distal face that encloses a portion of the annular recess; and an O-ring disposed within the annular recess.