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. 09, 2026
Filed:
Nov. 02, 2023
Deere & Company, Moline, IL (US);
Anthony K. Kraft, Epworth, IA (US);
John Vikram Gundupalli, Pune, IN;
John H Meinert, Farley, IA (US);
DEERE & COMPANY, Moline, IL (US);
Abstract
A fine grading system for a work machine with a frame, a boom assembly, an attachment coupler, a grading box, and an upper attachment frame portion extending forward of the grading box with a stabilizer wheel. A controller, a positioning unit, a hydraulic circuit communicatively coupled to the controller are configured to selectively adjust at least one proportional relief valve as a function of the output signals from sensors coupled to the pitch hydraulic actuators and the boom hydraulic actuators corresponding to the grading pressure to be generated by the actuators to position the grading box with respect to the ground surface. The system and method controls at least one proportional relief valve to maintain a target pressure.