Patent ID: 7823930
Filing Date: 2010-11-02
Classification: F16L

Abstract:
1. A coupling, comprising: a receiving part including an insertion side and an elongated receiving space defining an axial insertion direction, a latching arm receptacle defined between front and rear walls disposed perpendicular to said insertion direction and spaced from one another along said insertion direction, said front wall disposed closer to said insertion side than said rear wall, and a latching projection and a clearance disposed within said latching arm receptacle between said front and rear walls and adjacent one another along said insertion direction, said latching projection projecting from said front wall into said latching arm receptacle, and said clearance disposed between said latching projection and said rear wall; an insertion part insertable into said receiving space along said insertion direction, said insertion part including a retaining ring; a securing part including a retaining arm and a latching arm spaced from one another along said insertion direction, said latching arm disposed in said latching arm receptacle and biased toward said front wall and, when not engaged by said retaining ring, contacting said front wall, said securing part movable perpendicularly to said insertion direction between an extended position and a retracted position in which, in a first position of said retaining ring corresponding to incomplete insertion of said insertion part into said receiving space, said latching projection blocks said latching arm to prevent said securing part from moving from said extended position to said retracted position and, in a second position of said retaining ring corresponding to complete insertion of said insertion part into said retaining space, said retaining ring engages said latching arm to flex said latching arm in said insertion direction to move said latching arm into said clearance and permit movement of said securing part into said retracted position, in which said retaining arm engages said retaining ring on a side of said retaining ring opposite said latching arm.