Fluent material handling – with receiver or receiver coacting mea – With testing or weighing receiver content
Patent
1989-08-14
1990-08-07
Cusick, Ernest G.
Fluent material handling, with receiver or receiver coacting mea
With testing or weighing receiver content
141128, 222 77, 222196, 222 55, 177 50, 177120, B65D 500, G01G 1100
Patent
active
049459570
ABSTRACT:
A highly accurate weighing, feeding and conditioning apparatus for powders and other fine particulate materials is provided. The material is conditioned in a hopper by pulsating inflatable pads within the hopper, or by ultrasonic transmitters mounted on the hopper walls, in apertures in the hopper walls, or on a body at least partially submerged in the fine particulate material. The material is fed by a double auger, one inside the other. In bulk feed mode, both augers rotate at a first, higher speed. In dribble feed mode, only the inner, smaller auger is rotated, at a second, lower speed. This arrangement provides a turn-down ratio of about 500:1. The entire assembly is coupled to a high resolution balance, such as a magnetic force restoration balance, for accurate control of the weight of material fed.
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Kardux Kenneth A.
Kristo-Nagy Thomas
Cusick Ernest G.
Ingerman Jeffrey H.
Ohaus Corporation
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