Classifying – separating – and assorting solids – Sifting – With liquid treatment
Patent
1979-10-29
1981-05-19
Halper, Robert
Classifying, separating, and assorting solids
Sifting
With liquid treatment
209354, 209393, 210499, B07B 104
Patent
active
042683823
ABSTRACT:
A plurality of parallel sieve bars are transversely spaced apart in a plane to form a sieve. Each sieve bar has a side face enclosing an angle with the plane and diverging therefrom in the same direction so that the side faces constitute a stepped surface on said one side of said sieve. In sieving apparatus, such a sieve is arranged with said sieve bars spaced apart in an inclined plane and all side faces are disposed on the upwardly facing side of the sieve so that the angles of inclination of the side faces decrease progressively in groups of bars or from bar to bar.
REFERENCES:
patent: 651725 (1900-06-01), Ruble
patent: 2183157 (1939-12-01), Swedman
patent: 2883051 (1959-04-01), Maeder
patent: 3713610 (1973-01-01), Grenier
patent: 3815740 (1974-06-01), Ginaven
patent: 3880711 (1975-04-01), Hayes
patent: 4113626 (1978-09-01), Detcher
patent: 4193503 (1980-03-01), Connolly
Hanke Reinhard
Jahn Kornel
Halper Robert
Kelman Kurt
Voest-Alpine Aktiengesellschaft
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