Patent ID: 6863314

Claim:
A coupling for a tube having a feature spaced from an end of the tube for engagement by latching devices, the coupling comprising a coupling body having a throughway open at one end to receive an end portion of the tube; a seal mounted in the coupling body at a location spaced from said open end thereof to engage and seal with the outer periphery of the tube; a first latching device disposed within the coupling body having at least one latch to engage automatically with the feature on the tube when the tube has been inserted sufficiently into the throughway to engage with the seal to thereby retain the tube in the coupling body and a second manually operable latching device disposed externally of the coupling body and manually moveably mounted on the coupling body between one position in which the second latching device is engageable with the feature on the tube when the tube has been inserted into the coupling body sufficient for the first latching device to engage and provide a second independent retention for the tube in the coupling body when the tube is engaged by said first latching device, and another position withdrawn from the tube to allow release of the tube from the coupling body and wherein the second latching device includes a hinged leg having an integral spring to bias the second latching device toward the position withdrawn from the tube when the second latching device is disengaged; and mounting means having a first portion extending into the coupling body and on which the first latching device is mounted and a second portion extending over an external surface of the coupling body and on which the second latching device is mounted.