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:
Sep. 03, 1985
Filed:
Sep. 21, 1981
Jean Durot, Villepreux, FR;
Jacques Bernard, St. Germain en Laye, FR;
Societe Degremont, Rueil Malmaison, FR;
Abstract
A horizontal-axis aerator for use in a waste water purification system includes a cylinder having a horizontal axis, a first series of parallel blades on the surface of the cylinder and extending in directions nonparallel to the axis, and a second series of parallel blades on the surface of the cylinder and extending in directions nonparallel to the axis. The directions of the first series of blades are opposite to the directions of the second series of blades, with respect to the axis. The first and second series of blades intersect each other, such that upon the aerator being partially immersed in a body of waste water to be treated and being rotated therein, at any rotational position of the aerator about the axis, a constant portion of the total blade length of all of the blades of the aerator will be immersed in the waste water.