Back to results
US 5,289,724 AGranted
Gravimetric metering apparatus for pourable materials
AssigneePfister GmbH
InventorHans W. Hafner
Life of this patent
Estimating the term…
Abstract
A gravimetric metering apparatus for pourable material comprises a rotor rotating about vertical axis. The rotor has the form of a disk divided into four sectors. In a four phase measuring process the individual sectors are cyclically charged with pourable material, weighed and discharged. Preferably, an emptied sector is weighed as well and the determined tare weight is deducted from the brutto weight.
Claims19
A gravimetric metering apparatus for pourable materials comprising:
- base means;
- flat rotor means divided into at least three sectors slightly movable independent from one another in a vertical direction;
- driving means mounted on said base means and coupled to said rotor means for rotating thereof about an essentially vertical axis;
- charging means for loading pourable material onto said rotor means arranged above said rotor means on one side of said vertical axis forming a charging station for said rotor means;
- discharging means arranged above said rotor means at a location angularly off-set from said charging means such that a free angular space is left, for removing pourable material from said rotor means and forming a discharging station;
- force measuring means arranged below said rotor means for being momentarily loaded by a sector carrying pourable material placed thereon at said charging station when passing through said free angular space forming a measuring region;
- and
- evaluation means for receiving mass measurement signals from said force measuring means and indicating quantities of pourable material conveyed through said rotor means.
5 more elements
Dependencies are inferred from the claim text.