Patent ID: 6237964
Filing Date: 2001-05-29
Classification: E21B,F16L

Abstract:
A socket pipe joint comprising:a male part and a female part telescopically and axially interconnected in the joint;locking elements for releasably locking said male part and said female part relative to one another including at least one elongated locking sleeve between the male part and the female part, said elongated locking sleeve being located on the male part and, in said joint, extending from a position within the female part to a position outside an end opening of said female part, said locking sleeve having a generally annular tapered surface; anda drive assembly positioned outside the joint mounted on the male part to displace said locking sleeve along said male part between locked and unlocked positions, said locking elements including at least one pawl having a transverse surface engageable by said tapered surface of said locking sleeve and a wedge surface engageable with a generally complementary surface on said female part, the transverse and wedge surfaces of said one pawl being cooperable with the tapered surface of said locking sleeve and said complementary surface of said female part, respectively, to position and lock the male part and female part to one another in response to displacement of said locking sleeve in one axial direction.