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:
Nov. 03, 1992
Filed:
Aug. 26, 1991
Applicant:
Inventors:
Peter S Gross, Plymouth, MN (US);
Eric Bollensen, Columbia Heights, MN (US);
Richard Rajendren, Belle Plaine, MN (US);
Assignee:
Aeromix Systems, Incorporated, Minneapolis, MN (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01F / ;
U.S. Cl.
CPC ...
261 91 ; 261 93 ;
Abstract
An apparatus for the treatment of liquid by aeration is provided. The apparatus has a motor, a propeller carried by a motor-driven shaft, an airflow passage to the propeller, and bearings supporting the shaft at at least one location spaced from the motor. In accordance with the present invention, an air pocket is established about at least one of the bearings for keeping liquid from the bearings as by a conical member extending over the shaft from the bearing.