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:
Jul. 08, 2008
Filed:
Jan. 09, 2007
David Joseph Easton, Cedar Falls, IA (US);
David Joseph Easton, Cedar Falls, IA (US);
Deere & Company, Moline, IL (US);
Abstract
The invention relates to an engine cooling system monitoring system. There is a need for a cooling system monitoring system for an engine system wherein the coolant is maintained at a precise temperature. Thus, a cooling system monitoring system is provided for an engine system having internal combustion engine, a fan driven by a variable speed fan drive, and a radiator for cooling coolant circulating through the engine. The monitoring system includes a fan speed sensor generating a fan speed signal, a control unit and a display device controlled by the control unit. The control unit generates a cooling system status signal as a function of the fan speed signal and a maximum fan speed value. The display device has visible position range associated with a normal engine operating temperature, and has an indicator movable within said position range in response to the cooling system status signal to indicate a status of the engine cooling system.