US 12,222,033 B2
Hydrostatic transmission control system
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); and Chad E. Schoneman, Cedar Falls, IA (US)
Assigned to DEERE & COMPANY, Moline, IL (US)
Filed by Deere & Company, Moline, IL (US)
Filed on Oct. 24, 2022, as Appl. No. 18/049,118.
Prior Publication US 2024/0133464 A1, Apr. 25, 2024
Prior Publication US 2024/0229928 A9, Jul. 11, 2024
Int. Cl. F16H 61/08 (2006.01); F16H 61/02 (2006.01); F16H 61/04 (2006.01)
CPC F16H 61/08 (2013.01) [F16H 61/0403 (2013.01); F16H 2061/0244 (2013.01); F16H 2306/48 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A hydrostatic transmission control system comprising:
a clutch controller that receives a shift command for a gear transmission on a tractor while the tractor is travelling forward or is stationary and initiates a gear shift if the shift command satisfies an algorithm based on inputs from a hydrostatic transmission swashplate controller and the gear transmission, the algorithm including at least one performance criteria related to efficiency, durability and productivity; the hydrostatic transmission swashplate controller receiving inputs from an operator and the clutch controller for swashplate position and sensed inputs from an engine and a hydrostatic transmission.