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. 18, 2017
Filed:
Oct. 26, 2015
Deere & Company, Moline, IL (US);
Shaun J. Miller, Woodward, IA (US);
Robert C. Blad, Ankeny, IA (US);
Mark A. Cracraft, Johnston, IA (US);
James T. Noonan, Bondurant, IA (US);
Cole D. Miller, Ankeny, IA (US);
Darren J. Cruchelow, Ankeny, IA (US);
Steven D. Wallestad, Ankeny, IA (US);
DEERE & COMPANY, Moline, IL (US);
Abstract
A control system for controlling a pitch of a plurality of fan blades of a variable pitch fan driven by an engine of a harvester. The control system comprises first, second, and third feedback devices that provide first, second, and third feedback signals indicative of at least one harvester temperature, an ambient temperature, and an engine load. A controller is operable to receive the first, second, and third feedback signals, lookup an initial pitch setting, generate an initial pitch setting signal, and compare the harvester temperature to a harvester temperature limit and generate a fan reversal signal if certain conditions are met.