Patent ID: 9677697
Date: 2017-06-13
CPC Classifications: F16L

Claim:
1. A breakaway coupling for separating two lines in the case of an excessive pull or tension between a first side and a second side of a coupling, comprising: a first coupling half forming a first system-tight coupling side and having a tube-shaped housing with a cylindrical periphery portion, and an automatically closing fluid barrier on the inside of the housing; a second coupling half forming a second system-tight coupling side and having a tube-shaped housing with a cylindrical periphery portion, and an automatically closing fluid barrier on the inside of the housing; each of the first and second couplings have an end flange or collar that projects over the respective cylindrical periphery portion of each tube-shaped housing on the first system-tight coupling side and the second system-tight coupling side, respectively, the end flanges or collars being that are separated by a separation surface and are engaged with one another; at least one of said end flange or collar being provided with an oblique or conical surface; a series of ring segments having a cross section for embracing the coupling sides engaged with one another at said end flanges or collars, with each ring segment having at least one oblique or conical surface corresponding to said respective oblique or conical surface of said end flanges or collars, an expansion seal that sits in a recess of a first end flange or collar, and works together with an axial annular projecting surface of a second end flange or collar as a seal countersurface; and a pre-stressing element embracing the ring segments and presses them elastically against the first and second end flanges when the coupling halves are coupled.