Patent ID: 9556982
Date: 2017-01-31
CPC Classifications: F16L

Claim:
1. A clamping device for coupling together in leaktight manner two smooth tubes that are disposed end-to-end, the device comprising: a sealing ring that is suitable for clamping around the facing ends of the two tubes, and that has a first free end provided with a first sealing arrangement and a second free end provided with a second sealing arrangement, the first and second sealing arrangements being designed to procure leaktight contact between said free ends when the ring is in a tightened state, the device further comprising first and second tightening lugs suitable for being moved relative to each other in order to bring the ring into the tightened state, the first and second tightening lugs being secured to the sealing ring, respectively in the vicinity of the first free end of said ring and in the vicinity of the second free end of said ring, so that the first and second tightening lugs are respectively located at the first sealing arrangement and at the second sealing arrangement and the device having a bridge covering the sealing arrangements between said first and second tightening lugs, the bridge being mounted to be stationary relative to the first free end of the ring and suitable for sliding relative to the second free end while the ring is being tightened; wherein the first and second sealing arrangements respectively comprise at least one tongue and at least one notch, tightening the ring causing the tongue to penetrate into the notch and causing the contact zones between the tongue and the notch to deform.