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. 04, 2008
Filed:
Mar. 01, 2006
Jason Randall Savage, St. Joseph, MI (US);
Dwain Francis Moore, Benton Harbor, MI (US);
Thomas N. Robinson, Grand Rapids, MI (US);
Joel Matthew Sells, Hartford, MI (US);
Jason Randall Savage, St. Joseph, MI (US);
Dwain Francis Moore, Benton Harbor, MI (US);
Thomas N. Robinson, Grand Rapids, MI (US);
Joel Matthew Sells, Hartford, MI (US);
Whirlpool Corporation, Benton Harbor, MI (US);
Abstract
A water conductivity monitoring circuit determines the status of an ion exchange filter in the water flow to a steam generator. A microprocessor sends a reference signal to a conductivity sensor circuit that converts it to an excite signal that is sent to a probe in the water flow. Any conductivity of the water alters the excite signal, and the modified signal is compared to the reference signal to establish a value indicative of the conductivity of the water. The microprocessor compares the value to at least two thresholds representative of the status of the filter.