Volume detecting device

Details Volume detecting device Volume detecting device

1983-01-10

1985-03-26

Tollberg, Stanley H.

Dispensing

Automatic control

Material level control

340617, B67D 508

Patent

active

045068046

ABSTRACT:
A volume detector for detecting the volume of powdery material in a container includes a roller having a fin and rotatably provided in the container for generating a periodic wavy motion of the powdery material so as to cause at least a portion of the powdery material to rise above and fall below a predetermined level. A level sensor is provided at the predetermined level in the container for producing high and low level signals, respectively, when at least a portion of the powdery material rises above and falls below the predetermined level. The signal produced from the level sensor is applied to a duty cycle detector for detecting the duty cycle of high level signal, thereby the duty cycle representing the volume of the powdery material.

REFERENCES:
patent: 3498500 (1968-02-01), Hansen
patent: 3632019 (1970-05-01), Harm
patent: 4054230 (1977-10-01), Suzuki et al.
patent: 4314242 (1982-02-01), Kuru et al.

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