Powder feeding apparatus

Details Powder feeding apparatus Powder feeding apparatus

1989-04-12

1990-07-03

Huppert, Michael S.

Dispensing

Automatic control

Constant weight, volume or pressure control by output

222638, 222644, 222 77, 177 2519, 177165, B67D 508, G01G 1300

Patent

active

049383850

ABSTRACT:
A powder feeding device comprising a metering hopper for metering a powdery material supplied from a holding hopper, a weight measuring device for measuring the weight of the powdery material in the metering hopper, a device for opening and closing a discharge opening formed in the metering hopper and a control device for controlling the action of the opening and closing device. The control device has a timer, a device for setting a discharge interval, and a device for correcting the standard discharge interval set by the discharge interval setting device. The discharge interval correcting device corrects the standard discharge interval on the basis of a measured signal from the weight measuring device.

REFERENCES:
patent: 2544155 (1951-03-01), Harkenrider
patent: 2714472 (1955-08-01), Richardson
patent: 2969893 (1961-01-01), Peeters
patent: 4137976 (1979-02-01), Grayson, Jr.
patent: 4331262 (1982-05-01), Snyder et al.
patent: 4393950 (1983-07-01), Klopfenstein et al.
patent: 4448272 (1984-05-01), Keller et al.
patent: 4583605 (1986-04-01), Hirano

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