| 摘要 |
<p>A syringe which is portable and hand held, has self contained power actuation by means of trigger 30 activating power supply or battery 29, is repeatedly refilled via inlet 11 and upon activation delivers or injects a selected volume of fluid from chamber 6 through outlet 9. The piston 5 has an open space which is filled as the injection takes place, and as piston 5 is withdrawn to the ready position fluid moves from said space to chamber 6 through a one-way valve. The dosage may be adjusted via potentiometer 32. The electrical motor 1 may have a gearbox 2 and moving shaft 4. This syringe may be used to dose livestock.</p> |
