| 摘要 |
<p>A fluid drawing device (10) comprising a hand pump (11) connected to a fluid reservoir (12). The reservoir (12) has an inlet/outlet orifice (18) through which fluid can be drawn into and expelled from the reservoir (12). The pump (11) comprises a squeeze bulb (13) with an air release valve (14) in its wall and an air intake valve (15). Compressing the bulb (13) releases the air to the atmosphere through the release valve (14), subsequent decompression of the bulb (13) draws air through the intake valve (15) from the reservoir (12) reducing the pressure in it to draw fluid through the orifice (18) into the reservoir (12). Pushing a plunger (24) slidably housed within the reservoir (12) expels the fluid out through the orifice (18).</p> |
