LOCKING DEVICE AND METHOD FOR SECURING TELESCOPED PIPE

摘要

A locking segment (1) for use in connecting two lenghts of pipe (40, 70) has a radically extending heel (31) that serves as a rotational brake. By mating the brake (12) into an annular trough (47), that is, by placing it between two walls (41, 43), the rotation of the segment (1) can continue only until points on the brake mure between the two walls (41, 43). Rotation of the segment (1) in response to increasing thrust pressures can thereby be arrested before the rotation causes the segment (1) to bear on the spigot (70) with a radically inward force great enough to penetrate the spigot (70).