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US 5,667,108 AGranted
Single valve dispensing balance
AssigneeOptima-Maschinenfabrik Dr. Buhler GmbH & Co.
InventorsThomas Braun, Werner Gwinner
Life of this patent
Estimating the term…
Abstract
An apparatus for dosing volumes and/or weights of a free-flowing product contains a shaft formed by four fixed walls. At the lower end of the shaft is provided a rotary flap or valve, which can be closed and opened by a motor drive. Rotation takes place about an axis located in the vicinity of the rear wall of the shaft. The rotary valve can be opened to randomly selectable opening positions and fixed there.
Claims26
Apparatus for supplying doses of a free-flowing material measured by at least one of volume and weight, comprising:
- an enclosed shaft having a rear wall, the material to be supplied sliding downwardly over the rear wall;
- one rotary valve for closing the shaft located at a lower end of the shaft and mounted for rotation about an axis located near the rear wall of the shaft;
- and,
- a motor drive for moving the one rotary valve throughout a range between a maximum open position and a closed position, the one rotary valve being adjustable to any intermediate position in the range, including a coarse flow position and a fine flow position.
1 more element
Dependencies are inferred from the claim text.