Patent ID: 11926992
Assignee: DEERE & COMPANY
Field: Civil engineering (Other fields)
Classification: CPC E | IPC E

Claim 0:
1. A pilot neutralizing system of a work vehicle, the work vehicle comprising a frame assembly having a first frame portion and a second frame portion pivotally coupled to the first frame portion, an actuating assembly configured to pivot the first frame portion relative to the second frame portion, the pilot neutralizing system comprising:
a pilot neutralizer hydraulically coupled between an operator control member and a steering valve to selectively direct a pilot signal to the steering valve, and hydraulically coupled to a reservoir via a reservoir line, the pilot signal configured to switch the steering valve so as to change a direction of a hydraulic fluid flowing from the steering valve to the actuating assembly;
a flow control apparatus hydraulically coupled to the reservoir line and configured to change a draining rate of the pilot signal to the reservoir, and
wherein when an articulation position between the first frame portion and the second frame portion reaches a cushion region during steering, the pilot neutralizer changes the direction of the pilot signal such that the pilot signal drains back through the flow control apparatus to the reservoir to resist the actuating assembly from moving;
wherein the flow control apparatus includes an orifice and a check valve coupled to the orifice in a parallel arrangement, and the orifice and the check valve positioned between the pilot neutralizer and the reservoir.