Dispensing – Processes of dispensing
Patent
1975-07-16
1977-12-06
Reeves, Robert B.
Dispensing
Processes of dispensing
222195, 222404, 222564, B65G 6534
Patent
active
040612465
ABSTRACT:
A method and apparatus for the controlled feeding of finely divided powdered material from a bin or the like by gravity assist through a mechanical feeding device are characterized by fluidizing or at least aerating the powder above the feed device in a manner to promote flow and prevent packing of the bed of material above the feed device while maintaining a stable unfluidized mass of powder at the feed device.
The system is particularly useful in the controlled feeding of finely divided powdered material from a closed bin or the like into a pneumatic conveying conduit by gravity assist through a mechanical feeding device and characterized by constantly equalizing the pressure in the bin to pneumatic conveying line pressure for the purpose of equalizing the pressure in the pore and void space in the bed of material while maintaining a stable unfluidized mass of powder at the feed device.
REFERENCES:
patent: 2011133 (1935-08-01), Yoss
patent: 2668388 (1954-02-01), Thompson
patent: 2792262 (1957-05-01), Hathorn
patent: 3050201 (1962-08-01), Humphrey
patent: 3540633 (1970-11-01), Eckhardt
Reeves Robert B.
Shannon John P.
UFI Engineering & Manufacturing Co., Inc.
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