| 摘要 |
<p>A dispensing cartridge with a vented piston (20) is disclosed. The piston (20) includes a piston shell (22) and a bleed plug (24). The arrangement of the piston shell (22) and the bleed plug (24) allows air to be vented though the piston (20) until all of the air is vented out of the dispensing cartridge. With the air vented out of the dispensing cartridge, the piston (20) self- actuates into a closed sealed position in which the bleed plug (24) forms a seal with the piston shell (22) to prevent further fluid from flowing between the two elements.</p> |
