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:
Aug. 08, 2000
Filed:
Oct. 01, 1998
Applicant:
Inventors:
Brian W Mulshine, Carol Stream, IL (US);
Edward H Howell, Wheaton, IL (US);
Assignee:
Navistar International Transportation Corp., Chicago, IL (US);
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F01P / ;
U.S. Cl.
CPC ...
123 4115 ; 1231 / ; 210 961 ; 210104 ;
Abstract
A replaceable coolant filter assembly includes a housing, a filter element having and an end plate to define a fluid path through said filter and comprising a coolant additive sensor having a sacrificial sensing element disposed within said housing in contact with said fluid path. An electrical circuit connecting a microprocessor to the sensing element is grounded through the filter housing to an engine, the microprocessor being responsive to the opening of said sensing element circuit by corrosion an alarm device.