Patent ID: 6991270

Claim:
A hose and coupling assembly comprising: a hose, wherein the hose includes a corrugated portion that includes a plurality of grooves; a coupling that connects the hose to an external passage; a fitting member including (i) a passage portion having a receiving passage, and (ii) a first engagement catch projecting outwardly from an open peripheral end of the passage portion; and a socket having:(i) an elastically and diametrically-expandable socket body for covering both of the fitting member and the corrugated portion; (ii) a second engagement catch, formed on the socket body, for engaging the first engagement catch; and (iii) a socket fitting portion, formed on an opening of the socket body, for engaging with at least a first one of the grooves of the corrugated portion; and a sealing member located in a second one of the plurality of grooves for sealing between the corrugated portion and a wall of the external passage; wherein: the socket is formed such that the connecting of the hose with the external passage with a tight seal is achieved by locating the sealing member in the second one of the grooves and engaging the socket fitting portion with the first one of the grooves and then by pressing the socket attached to the corrugated portion toward the fitting member to engage the second engagement catch with the first engagement catch; disengagement of the second engagement catch from the first engagement catch is achieved by expanding the diameter of the socket body; and the entire socket expands while the socket is pressed toward the fitting member.