Screening apparatus and method for screening mixed materials

Details Screening apparatus and method for screening mixed materials Screening apparatus and method for screening mixed materials

1994-07-15

1995-11-28

Terrell, William E.

Classifying, separating, and assorting solids

Sifting

Feeding

209254, 209421, 209910, 198747, B07B 146, B07B 1316

Patent

active

054699720

ABSTRACT:
A screening apparatus and a method are provided for separating mixed material into coarse materials and finer materials. After dumping mixed materials with a loader into a bucket located in an upper section of a screening apparatus, a movable wall moving at a predetermined speed along the bottom of the bucket pushes the mixed materials into a bottom opening of the bucket over a first material separating screen defining a slope with reference to the ground and subjected to vibrations of a shaking device. The apparatus may further comprise parallel spaced bars for primary removing of large debris.

REFERENCES:
patent: 1791345 (1931-02-01), Bishop
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patent: 4256572 (1981-03-01), Read
patent: 4303506 (1981-12-01), Finlay
patent: 4983280 (1991-01-01), Eriksson
patent: 5082555 (1992-01-01), Read
patent: 5106490 (1992-04-01), McDonald
patent: 5232098 (1993-08-01), St-Pierre et al.

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