The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 12, 1977
Filed:
Jul. 07, 1975
Applicant:
Inventor:
Elliot Bryant Fitch, Weston, CT (US);
Assignee:
Dorr-Oliver Incorporated, Stamford, CT (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
B01D / ;
U.S. Cl.
CPC ...
210528 ;
Abstract
A continuously operating Sedimentation Tank having a Rotary Rake Structure equipped with sludge engaging blade means constructed and arranged so as to induce thin sludge or supernatant from an upper or superjacent zone to enter the bottom zone of a bed of packed sludge solids, thereby reducing friction between the mass being moved by the blades and a layer underneath of residual material on the tank bottom, thereby reducing the torque requirement of the rake structure for moving the sludge.