| 摘要 |
<p>An apparatus for displacing a high viscous substance, such as grease, includes a positive displacement-type pump (16) that is mounted within a container (12) for containing grease to be displaced. The chamber (20) of the pump is in communication with a second chamber (34) defined by a tubular sleeve (30) that is slidably displaceable on the body (18) of the pump, thereby rendering the volume of the chamber (34) variable and, as such, providing for effective displacement of grease into the chamber (20) of the pump (16) via a valve arrangement (52). A closure member (50) is secured within the container and is disposed to control charging of the chamber (34) with grease contained within the container (12) and the displacement of such grease from the chamber (34) into the chamber (20) of the pump (16). Also, simultaneously with the charging of the chamber (34) the pump (16) can displace grease therefrom, in a essentially conventional manner, for lubricating or other applications.</p> |
