Metering and/or feeding device for materials

Details Metering and/or feeding device for materials Metering and/or feeding device for materials

1982-02-25

1983-10-04

Rolla, Joseph J.

Dispensing

Fluid flow discharge

From movable trap chamber

222346, 222370, 222427, 417477, 406 52, 406192, F04B 1912

Patent

active

044074360

ABSTRACT:
A metering and/or feeding device for materials is disclosed. A plurality of vertically oriented, elastic-walled tubes are arranged at equal distances from the axis of a rotatable helical rod which, as it rotates, sequentially engages and constricts each of the elastic-walled tubes, beginning at their upper portions and progressively moving down the length of the tubes. The material being metered and/or fed is introduced into the elastic-walled tubes at their upper ends. A cover member is provided to cover the infeed ends of the tubes at selected intervals to prevent entry of the material being fed and/or metered into the tube at the time that the helical member engages the upper portion of the tube to constrict the tube so that it is substantially free of material. A plenum, through which a stream of pressurized gas is discharged, communicates with the discharge ends of each of the tubes, the gas conveying the material entering the plenum from the tubes to a work location.

REFERENCES:
patent: 2015123 (1935-09-01), Pennell
patent: 2629333 (1953-02-01), Olden
patent: 3881846 (1975-05-01), Kashmerick

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