| 摘要 |
A coupling that includes first (B) and second (C) tubular members that are removably held together in fluid communication by a threaded collar (D), with the seal between the tubular members being effected by a resilient ring (E) mounted on the second (C) tubular member that slidably and rotatably engages the first tubular member (B), and the colar (D) and ring (E) so cooperating with the first (B) and second (C) tubular members that the latter may pivot laterally relative to the first tubular member (B) without destroying the seal therebetween. In addition, the second tubular member (C) may be moved longitudinally away from the first tubular member (B) to the extent that communication is established between the interior of the tubular members and the ambient atmosphere without disconnecting the second tubular member (C) from the collar (D) and such communication resulting in equalization of pressure between the interior of the tubular members and the exterior thereof. |
