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:
Jun. 11, 1985
Filed:
Nov. 16, 1983
Applicant:
Inventor:
Christopher P Thissen, Austin, MN (US);
Assignee:
Walker Process Corporation, Aurora, IL (US);
Primary Examiner:
Int. Cl.
CPC ...
C02F / ;
U.S. Cl.
CPC ...
210150 ; 261 92 ; 261120 ;
Abstract
A waste water treatment apparatus with a tank through which waste water flows, a rotary biological contactor in the tank with an annular plastic media fixed on a buoyant drum or tubular shaft providing buoyancy to which maintains immersion to the topmost peripheral portion of the drum, mechanical bearings to stabilize the contactor in the water and a drive connected to rotate the contactor.