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. 06, 2004
Filed:
Aug. 29, 2000
Applicant:
Inventor:
Richard W. Dennis, II, Clifton, IL (US);
Assignee:
United States Filter Corporation, Palm Desert, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01D 1/712 ; G05B 1/300 ;
U.S. Cl.
CPC ...
B01D 1/712 ; G05B 1/300 ;
Abstract
The instant invention is a device and method for its use which includes the addition of a deviation compensation function effective to automatically adjust the offset used in time-based proportional control. Inclusion of this improvement finds particular utility in situations like public pools where daily bather load varies depending on weather and other unpredictable factors.