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:
Mar. 07, 2017
Filed:
Jul. 15, 2013
Deere & Company, Moline, IL (US);
Kevin L. Pfohl, Dickeyville, WI (US);
John M. Chesterman, Dubuque, IA (US);
Michael R. Gratton, Dubuque, IA (US);
DEERE & COMPANY, Moline, IL (US);
Abstract
A work vehicle includes a cooling fan that selectively and/or periodically runs in reverse in order to discharge accumulated dirt or debris from one or more coolers. The reverse activation of the fan is prevented from initiating when the operator of the running vehicle is outside the operator cab in the vicinity of the coolers. In an exemplary embodiment, activation of a parking brake interrupts or prevents reverse activation of the fan, though a fuel door sensor may also be used. A minimum engine speed may be specified to ensure adequate power for maximum fan power during the reverse operation.