Patent ID: 8827321

Claim:
A pipe coupling assembly comprising: (a) a body having a passage formed therein extending from an end aperture of said body to receive a pipe, (b) a collar positioned partially within said passageway, said collar having an annular flange positioned outside said end aperture and flexible arms extending inside said passageway, said flexible arms cooperable with a cam surface formed in said body, said cam surface comprising an inner conical portion extending in an axial direction and engageable with said flexible arms such that said flexible arms are urged inwardly by movement in said axial direction, a distal end of each of said flexible arms having on its inner side a radial projection engageable with an annular projection extending from said pipe; (c) a safety mechanism comprising: (i) a cylindrical portion disposed on a portion of said pipe straddling said end aperture such that said mechanism is positioned between said pipe and said collar; and (ii) a fork connected to said cylindrical portion and embracing said collar such that said fork is positioned between said body and said collar annular flange to inhibit axial movement of said collar towards said body.