Pipe coupling

A pipe coupling for receiving a pair of axially aligned pipe ends with a circumferential surface, the pipe coupling comprising:

• an annular sleeve with a generally C-shaped cross-section in the axial direction, the sleeve defining a sealing chamber;
• an annular sealing collar in the sealing chamber;
• a pair of opposing annular supporting bodies each having a first end with a tab engaged with the sleeve and a second end with an axially displaced radial wall with a circular opening for receiving and restraining one of the pipe ends, each supporting body having an inwardly facing recess adjacent said radial wall;
• and
• a pair of locking members, one locking member for each supporting body, each locking member configured as a generally rectangular clamping plate and pivotally placed within the recess on the supporting body, each clamping plate having a pipe engaging edge biased in an extraction direction by springs on the supporting body whereby when the pair of pipe ends inserted in the pipe coupling are subjected to extraction stress, the locking members catch the circumferential surface of the pair of pipe ends and are straightened up radially to a clamping position, thereby providing a clamping force on the pipe ends.