Patent ID: 7758085
Filing Date: 2010-07-20
Classification: F16L

Abstract:
1. A tube coupling configured to receive and secure an end of a tube, the tube coupling comprising: a coupling body having a head and a hollow stem projecting longitudinally from the head, the stem being adapted to engage in a tube when the tube is received by the tube coupling; a cap mounted on the head of the coupling body and encircling the stem, a gap being formed between the cap and the stem, the gap being configured to receive the tube when the tube is received by the tube coupling; a tube locking device at least partially positioned within the cap, the tube locking device being separate and discrete from the cap and being movable longitudinally with respect to the cap, the tube locking device being configured to lock the tube against withdrawal from the stem when the tube is received by the tube coupling; and a locking ring located on the stem within the cap, the locking ring having both inwardly and outwardly projecting teeth, the inwardly projecting teeth engaging the outer surface of the stem and the outwardly projecting teeth engaging the inner surface of the cap, thereby locking the cap on the stem.