Mobile gravel screening apparatus

Details Mobile gravel screening apparatus Mobile gravel screening apparatus

1994-06-10

1996-01-09

Terrell, William E.

Classifying, separating, and assorting solids

Sifting

Feeding

209346, 209409, 209420, 209935, B07B 134, B07B 149

Patent

active

054821657

ABSTRACT:
A mobile screening apparatus for gravel and other aggregates includes a three sided box adapted to rest on the ground surface. A vibrating screen is located above the box in a tilted, or sloped condition, so that gravel deposited on the screen is in a fluidized condition. Relatively fine gravel particles (stones) pass downwardly through the screen into the box. Two upwardly divergent trough walls are rigidly secured to side edges of the screen to guide gravel particles onto the screen. A rotary motor and counterweight system is mounted on the undersurface of the screen to oscillate the screen in a generally vertical direction. The motor and counterweight system are exposed so as to be readily accessible for inspection or maintenance purposes.

REFERENCES:
patent: 4237000 (1980-12-01), Read et al.
patent: 4256572 (1981-03-01), Read
patent: 4699713 (1987-10-01), Tieben
patent: 4923597 (1990-05-01), Anderson et al.
patent: 5106490 (1992-04-01), McDonald
patent: 5368167 (1994-11-01), Howes

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