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:
Jun. 02, 2026
Filed:
Mar. 21, 2024
Deere & Company, Moline, IL (US);
Sarvesh Aundhkar, Kolhapur, IN;
Darren J. Cruchelow, Ankeny, IA (US);
Logan K. Trueblood, Port Byron, IL (US);
Todd E. Van Hal, Eldridge, IA (US);
Deere & Company, Moline, IL (US);
Abstract
A variable pitch fan system for an agricultural machine includes an engine, a fan, a pulley assembly and a controller. The engine powers the agricultural machine, including by driving rotation of a drive wheel of the pulley assembly. The fan includes a plurality of blades having variable pitch. The pulley assembly includes the drive wheel, a belt that is rotationally driven by the drive wheel, and a fan wheel that is rotationally driven by the belt to drive rotation of the fan. The controller receives one or more signals from at least one of a belt load sensor and fan sensor indicative of a load on the belt and a speed of the fan, respectively. The controller also receives one or more signals from at least one engine sensor indicative of a speed of the engine. The controller assesses variable pitch fan system failure based on the received signals.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile