| 摘要 |
A hose end coupling of the kind comprising a tubular nipple or insert piece which is forced into the interior of the hose and is formed with exterior circumferential ribs to grip the interior wall of the hose and an internally circumferentially ribbed ferrule which is swaged over the tube to compress the hose wall between the ferrule and the insert, an inwardly extending lip on the ferrule engaging in a groove in the insert beyond the end of the hose. Wherein the ribs of the ferrule are in two sets separated by a groove which is wider and deeper than the space between any pair of adjacent ribs, the ribs of the set nearer the outer end of the ferrule having a smaller internal diameter than the majority of the ribs of the innermost set of which the rib adjacent the groove has an internal diameter substantially equal to that of the ribs of the outer-set.
|
