| 摘要 |
<p>A keg has a spear fitted with a safety blow-out device (105, 106). Spring member (106) has three legs with outwardly turned ends (106d, 106e, 106f) that slot into equi-angularly spaced holes. The leg ends prevent the spear (101) from being extracted through the keg neck (102) since the diametrical extent of the legs is greater than the internal diameter of the neck. Appropriate relative axial movement of body (7) relative to tube (2) retracts leg ends (106d, 106e, 106f) within said neck internal diameter allowing extraction of the spear.</p> |
