Heavy particle separation

Classifying – separating – and assorting solids – Sifting – Concave and convex sifters

Reexamination Certificate

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Details

C209S012100

Reexamination Certificate

active

08042691

ABSTRACT:
A method of heavy particle separation, including a primary separation stage which includes the steps of dropping, accumulating, concentrating and discharging of heavy particles and/or a secondary separation stage for concentrating heavy particles which includes the steps of infeeding, stilling and retaining such particles.

REFERENCES:
patent: 46806 (1865-03-01), Kustel
patent: 409091 (1889-08-01), Adams
patent: 470781 (1892-03-01), Cudner
patent: 682749 (1901-09-01), Roberts
patent: 964083 (1910-07-01), Blake
patent: 1736111 (1929-11-01), Davidson
patent: 4505811 (1985-03-01), Griffiths et al.
patent: 5108584 (1992-04-01), Brosseuk
patent: 6059120 (2000-05-01), Rohr et al.
patent: 1.123.805 (1956-09-01), None
patent: 1 487 429 (1977-09-01), None

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