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:
Feb. 11, 2025
Filed:
Oct. 24, 2022
Deere & Company, Moline, IL (US);
John P. Kruckeberg, Clarks Hill, SC (US);
Mark A. Herman, LaPorte City, IA (US);
David L. Sprinkle, Warrenton, GA (US);
Harry K. Voelp, IV, Evans, GA (US);
Tejal Sarda, Pune, IN;
Julie B. Kuyath, Grovetown, GA (US);
Steven P. Forssberg, Waterloo, IA (US);
Chad E. Schoneman, Cedar Falls, IA (US);
DEERE & COMPANY, Moline, IL (US);
Abstract
A hydrostatic transmission control system includes a controller that monitors inputs for shifting a transmission of a tractor to a different range gear; determines if an engine on the tractor is operating in a desired and acceptable shift range based on a sensed speed and a load of the engine, and determines if a hydrostatic transmission on the tractor is operating in a desired and acceptable shift range based on a sensed load and a speed of the hydrostatic transmission. If the controller determines the engine and the hydrostatic transmission are operating in the desired and acceptable shift range, the controller commands an oncoming clutch to ramp up and an off going clutch to ramp down, and synchronizes speeds of the engine and the hydrostatic transmission.