US 12,123,174 B2
Throttle control system
Brant Douglas Kukuk, Perry, OK (US); Jacob Harman, Stillwater, OK (US); Christopher Trimble, Stillwater, OK (US); and Monty Kyle Hawkins, Perry, OK (US)
Assigned to The Charles Machine Works, Inc., Perry, OK (US)
Filed by The Charles Machine Works, Inc., Perry, OK (US)
Filed on Mar. 6, 2023, as Appl. No. 18/179,175.
Application 18/179,175 is a continuation of application No. 16/999,246, filed on Aug. 21, 2020, granted, now 11,608,613.
Claims priority of provisional application 62/889,737, filed on Aug. 21, 2019.
Prior Publication US 2023/0203788 A1, Jun. 29, 2023
Int. Cl. E02F 9/22 (2006.01); E02F 9/16 (2006.01); E02F 9/20 (2006.01)
CPC E02F 9/2253 (2013.01) [E02F 9/166 (2013.01); E02F 9/2066 (2013.01); E02F 9/2267 (2013.01); E02F 9/2285 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A work machine comprising:
a chassis;
a ground drive for translating the chassis across a ground surface;
a prime mover disposed on the chassis and configured to provide power to the ground drive;
a switch disposed on the chassis, wherein the switch is adjustable from a first position to a second position; and
a control system, comprising:
a throttle input configured to send a throttle signal;
a controller configured to receive the throttle signal and provide an output throttle condition to the ground drive; whereby:
a first condition is defined when the switch is in the first position, in which the controller is configured to allow the throttle signal to determine the output throttle condition; and
a second condition is defined when the switch is in the second position, in which the controller is configured to limit output throttle condition to a predetermined maximum such that the prime mover is in an idle condition when the controller is in the second condition.
 
6. A method of operating a work machine having a ground drive and an attachment, comprising:
placing the work machine in a first condition by standing on a platform, wherein the first condition is characterized by the operation of a throttle control to control operation of the ground drive and the attachment;
thereafter, stepping off the platform to place the work machine into a second condition, wherein the second condition is characterized by a predetermined maximum throttle output;
in which an engine of the work machine is placed into an idle condition when the work machine is in the second condition.