Screening deck for fractionating crushed stone

Details Screening deck for fractionating crushed stone Screening deck for fractionating crushed stone

2005-02-14

2009-12-29

Mackey, Patrick H (Department: 3653)

Classifying, separating, and assorting solids

Sifting

Elements

C209S314000, C209S354000, C209S397000, C209S400000

Reexamination Certificate

active

07637378

ABSTRACT:
A screening deck for the screening of crushed stone material includes a plurality of screening elements arranged adjacent one another. At least one side of each screening element is non-parallel with respect to a longitudinal direction of the screening deck. The screening deck includes at least two different types of screening elements which are arranged at different heights in the screening deck for creating narrowing passages and/or winding paths and/or steps for the material traveling on the screening deck.

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