| 摘要 |
<p>Piston (6,11) is slidable within cylindrical casing (1) to force fluid disposed in collapsible container (C) out through nozzle (14). The piston is spring-biassed to cause automatic fluid discharge, but when withdrawn can be retained against the action of spring (5) by engagement of projections (9) on the piston rod (6) with casing end caps (3). For filling cracks or gaps with liquid sealant, a plurality of such injectors may be used, each secured in position by way of attachment units (15) and/or dowels located in bores.</p> |
