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:
Dec. 04, 1979
Filed:
Mar. 03, 1978
Applicant:
Inventors:
Clifford C Hach, Ames, IA (US);
Wayne P Zemke, Port Washington, WI (US);
Assignee:
Hach Chemical Company, Loveland, CO (US);
Primary Examiner:
Int. Cl.
CPC ...
B01D / ;
U.S. Cl.
CPC ...
210396 ; 210488 ; 210492 ;
Abstract
A mechanical strainer having a stack of alternate discs and blades biased together, the discs being slowly driven by a motor and the blades being anchored on the strainer frame, which discs and blades are perforated so that water surrounding the strainer can leak into the perforations of the stack. A passage is formed in the frame communicating with the perforations of the stack, and a tube leading to where the water is desired is coupled to the frame passage. The result is a kind of labyrinth rotary seal having intended leakage.