Patent ID: 6764107
Filing Date: 2004-07-20
Classification: F16L,Y10S

Abstract:
A fitting for connecting corrugated tubing, wherein the fitting comprises:a coupling body comprising an axial body through bore, wherein the axial body through bore comprises: a first portion having a diameter; a second portion having a reduced diameter, and a shoulder portion between the first portion and the second portion that abuttingly receives the tubing; a nut which may be removably attached to the coupling body, wherein the nut comprises an axial nut through bore, wherein the axial nut through bore comprises: a tapered inner surface; and a sleeve which is received in the axial nut through bore such that the tapered inner surface of the nut gradually reduces an interior diameter of the sleeve, and further wherein the sleeve comprises a plurality of separate arcuate segments, each segment comprising: an inner surface comprising: a projection at a first end of the segment such that when the segments are assembled together the projections form a continuous annular projection; an inner groove which, when the segments are assembled together, becomes annular and continuous, the inner groove containing an annular inner spring; and an outer surface comprising: a tapered portion, wherein the tapered portion gradually narrows decreasing the inside diameter of the sleeve until the sleeve terminates at a second end.