US 12,122,448 B1
Zero turning radius vehicle and drive system for zero turning radius vehicle
Jason Richardson, Chuckey, TN (US); Randall Thompson, Landcaster, SC (US); Roger Gray, Greeneville, TN (US); Ryan Press, Clover, SC (US); and Steven Huard, New Ulm, MN (US)
Assigned to Parker-Hannifin Corporation, Cleveland, OH (US)
Filed by Parker-Hannifin Corporation, Cleveland, OH (US)
Filed on Sep. 2, 2020, as Appl. No. 17/010,432.
Claims priority of provisional application 62/902,068, filed on Sep. 18, 2019.
Int. Cl. B62D 11/04 (2006.01); A01D 34/66 (2006.01); A01D 69/02 (2006.01); A01D 101/00 (2006.01); B62D 1/04 (2006.01); B62D 1/12 (2006.01); B62D 15/02 (2006.01)
CPC B62D 11/04 (2013.01) [A01D 34/66 (2013.01); A01D 69/02 (2013.01); A01D 2101/00 (2013.01); B62D 1/046 (2013.01); B62D 1/12 (2013.01); B62D 15/0215 (2013.01)] 11 Claims
OG exemplary drawing
 
1. A drive system for a zero turning radius (ZTR) vehicle, the drive system comprising:
a steering control;
a sensor configured to receive a position of the steering control;
a damper, coupled to the steering control, configured to apply a selectable amount of resistive force to the steering control; and
a controller, in communication with the sensor, configured to operate a motor responsive to the position of the steering control, and to operate the damper to apply a resistive force to the steering control, wherein the resistive force is proportional to the position of the steering control.