Classifying – separating – and assorting solids – Sifting – Drum sifters
Patent
1985-03-22
1987-01-13
Bashore, S. Leon
Classifying, separating, and assorting solids
Sifting
Drum sifters
209293, 209310, 209379, 209407, B07B 126, B07B 128
Patent
active
046363041
ABSTRACT:
The invention relates to a screening machine with a screening drum which rotates about its axis and has a screen made of elastic material. The characterizing feature of the invention is that the screening drum has at least one screening zone which has the shape of a cylinder or truncated cone and the length of which, in order to alternately stretch and relax the screen lining, can be changed in a vibrating manner in the axial or conveying direction.
REFERENCES:
patent: 2700470 (1955-01-01), De Gail
patent: 3591001 (1971-07-01), Quesnel
patent: 3633745 (1972-01-01), Webner
patent: 3971715 (1976-07-01), Webner
patent: 4188288 (1980-02-01), Wehner
patent: 4269703 (1981-05-01), Bruderlein
Bashore S. Leon
Dubno Herbert
Hein Lehmann AG
Lithgow Thomas M.
Ross Karl F.
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