Liquid purification or separation – Plural distinct separators – Filters
Patent
1975-04-23
1977-05-17
Spear, Jr., Frank A.
Liquid purification or separation
Plural distinct separators
Filters
210404, 210406, 210416R, B01D 3308, B01D 3332
Patent
active
040240665
ABSTRACT:
There is disclosed a drainage device for gravel and sand which provides a higher degree of drainage than is obtainable with known drainage devices, consisting of a rotatable bucket wheel, scoop-buckets distributed around the periphery of the bucket-wheel, a chamber and a drainage hole associated with each scoop-bucket, the drainage holes being arranged in a disc-like sidewall of the bucket wheel, and a suction box connected to a vacuum pump and sealingly engaging said side-wall for applying sub-atmospheric pressure successively to each chamber as the bucket wheel rotates.
REFERENCES:
patent: 819179 (1906-05-01), Shortt
patent: 1133944 (1915-03-01), Faber
patent: 1878998 (1932-09-01), Akins
patent: 2696309 (1954-12-01), Bultman
patent: 2765085 (1956-10-01), Strindlund
patent: 2899068 (1959-08-01), King et al.
patent: 3044629 (1962-07-01), Saxe
patent: 3220554 (1965-11-01), Burchert et al.
Stichweh born Sonnabend, legal representative by Inge
Stichweh born von der Schulenburg, legal representative by Inge
Stichweh, deceased Walter
Stichweh, legal representative by Petra
Stichweh, legal representative by Sabine
Spear, Jr. Frank A.
Spitzer Robert H.
Stichweh Verwaltungs-GmbH
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