US 4,111,272 AGranted

Weigh feeding apparatus

AssigneeAcrison, Inc.

InventorsRonald J. Ricciardi, Angelo Ferrara, Joseph L. Hartmann, Gary R. Lauterbach

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Abstract

Disclosed herein is an automatically controlled weigh feeding apparatus including a container for prefilling with a substance, a device for discharging the substance from the container at a controllable rate, apparatus for weighing the substance being discharged and for producing an electrical signal proportional to that weight, a voltage to frequency converter connected to receive the electrical signals, a digital computer, apparatus coupled to an output of the voltage to frequency converter for inputting data signals to the digital computer, the computer being adapted to compute a corrective signal based on the input data signals received, and coupling apparatus coupled between the computer and the device for discharging the substance from the container for controlling the rate of discharge responsive to the corrective signal.

Claims21

Dependent claims

A weight feeding apparatus comprising:

a container for prefilling with a substance;
means for discharging said substance from said container at a controllable rate;
means for weighing said substance being discharged;
means coupled to said weighing means for producing first electrical signals proportional in amplitude to the weight determined by said weighing means;
voltage to frequency converter means connected to receive said first electrical signals;
digital computer means;
means coupled to an output of said voltage to frequency converter means for inputting data signals to said digital computer means;
said digital computer means being adapted to compute a corrective signal based on the input data signals received;
and
means coupled between said computer means and said means for discharging said substance from said container for controlling the rate of discharge responsive to said corrective signal.

7 more elements

Dependencies are inferred from the claim text.

Facts

Application: 05/748,397Filed 7 Dec 1976
Granted: 5 Sep 1978
Term ends: Not estimatedThe source records don’t support an estimate.

Classification6 codes

G05D 7/0605
Characterised by the use of electric means: specially adapted for solid materials
G01G 11/086
Having means for controlling the rate of feed or discharge: of the loss-in-weight feeding type
G01G 13/20
Means for automatically discharging weigh receptacles under control of the weighing mechanism: by screw conveyors in the weigh receptacle
G05D 7/0611
Specially adapted for solid materials: characterised by the set value given to the control element