Quick-connect tubular couplings

A tubular coupling comprising:

• a first tube having an end portion,
• a cage means mounted externally on the end portion in axially inwardly spaced relation to the terminal end of the latter,
• the cage means having a radial base portion having a circular aperture through which the tube end portion projects, a curved wall forming an annular chamber and a circular flange angularly inclined toward the tube end portion in the general direction of the terminal end of the latter, the flange terminating in radially spaced relation to the tube end portion surface,
• retention means on the first tube end portion engaged with the base portion of the cage means to hold the latter against axial displacement,
• a second tube having an end portion telescopically mounted on the first tube end portion and having an outwardly inclined flare at its terminal end,
• the flared end projecting into the cage means through the space between the surface of the first tube end portion and the cage means flange,
• the inclined outer surface of the flared end of the second tube making an angle with the longitudinal axis of the second tube which is substantially the same as the angle made to the same axis by the inner surface of the inclined flange,
• circular spring means contained within the cage means interposed between the second tube end portion flare and the cage means flange preventing axial withdrawal of the second tube end portion from the cage means and thereby preventing telescopic disengagement of the second tube from the first tube,
• and "O" ring means externally mounted on the first tube end portion between the terminal end of the latter and the retention means to prevent leakage between the telescoped tube end portions.