Patent ID: 6024254
Filing Date: 2000-02-15
Classification: G01F

Abstract:
An apparatus for metering out viscous compositions, with an inlet valve and an outlet valve, said apparatus comprising:a metering chamber for metering out the viscous composition, the metering chamber connected downstream from the inlet valve and upstream from the outlet valve;a threaded rod longitudinally displaceably disposed as a displacer in the metering chamber, said threaded rod having external threads thereon; anda driving mechanism which drives the threaded rod in the metering chamber, the driving mechanism including:an electric motor having a hollow shaft, with said threaded rod rotationally positioned coaxially in said hollow shaft, andan arrangement of internal threads fixedly connected with said hollow shaft, with said internal threads threadedly engaging said external threads of said threaded rod;wherein, after the metering chamber is filled with the viscous composition, the outlet valve is opened up for discharging the metered-out viscous composition from the metering chamber and the threaded rod is advanced for discharging the viscous composition.