US Patent 8060994 Carabiner with pivoting gate equipped with a locking ring

A carabiner includes a fixed C-shaped body equipped with a securing part, and a gate movable around a pivoting axis between a closed position and an open position. The gate includes a latching part and a locking ring fitted coaxially around the gate. An end head of the gate partially surrounds the securing part in the closed position, and includes a shoulder acting as end-of-travel stop for the ring in the locked position.