Patent ID: 7731243
Filing Date: 2010-06-08
Classification: F16L,Y10T

Abstract:
1. A female coupling for removably joining pipes, the female coupling being adapted to receive a second coupling element inserted therein along a longitudinal axis of the female coupling, the female coupling comprising a first coupling element including a body and two superposed coaxial rings, a locking ring and a safety ring, which are mounted around a body, means to block the locking ring axially with respect to the body while the safety ring is able to slide with respect to the locking ring and the body, the locking ring including at least one locking slot of a size to receive a radial projection of a second coupling element when a second coupling element is inserted into the first coupling element, the at least one locking slot including a notch to lock the projection axially with respect to the body of the first coupling element, the safety ring having at least one safety slot that also receives a projection of a second coupling element when the projection is received in the locking slot, the at least one safety slot having a safety notch to lock the projection circumferentially with respect to the locking ring, the locking ring and the safety ring being rotatably mounted about the body of the first coupling element, and means for rotating the locking and safety rings as one.