US 12,280,997 B2
Jerk reduction for lift trucks
Nicholas M. Draayer, Portland, OR (US); Ryan McDermott, Fairview, OR (US); and Edmund Stilwell, Oregon City, OR (US)
Assigned to Hyster-Yale Materials Handling, Inc., Fairview, OR (US)
Filed by Hyster-Yale Materials Handling, Inc., Fairview, OR (US)
Filed on Jun. 26, 2023, as Appl. No. 18/213,984.
Application 18/213,984 is a continuation of application No. 16/552,849, filed on Aug. 27, 2019, granted, now 11,807,508.
Claims priority of provisional application 62/725,879, filed on Aug. 31, 2018.
Prior Publication US 2023/0331528 A1, Oct. 19, 2023
Int. Cl. B66F 9/075 (2006.01); B66F 9/24 (2006.01); B66F 17/00 (2006.01)
CPC B66F 9/07559 (2013.01) [B66F 9/07504 (2013.01); B66F 9/0755 (2013.01); B66F 9/24 (2013.01); B66F 17/003 (2013.01)] 27 Claims
OG exemplary drawing
 
1. A system for improving operation of a materials-handling vehicle, the system comprising:
one or more user input devices configured to receive from an operator a request to perform an action; and
a processor within the materials-handling vehicle, wherein the processor is configured to:
determine, before performing the action requested by the operator, a magnitude of a force that would result by performing the action requested by the operator, wherein the force acts either on the materials-handling vehicle or on a load carried by the materials-handling vehicle, and wherein the force results from either initiation or termination of a movement of the materials-handling vehicle or a part of the materials-handling vehicle;
determine whether the magnitude of the force would exceed a threshold if the action is performed as requested, wherein whether the magnitude of the force would exceed the threshold is independent of whether the action would cause the materials-handling vehicle to become unstable;
in response to determining that the magnitude of the force would exceed the threshold, cause the materials-handling vehicle to perform the action modified so as to reduce the magnitude of the force and thereby not exceed the threshold; and
if it is determined in response to determining that the magnitude of the force would not exceed the threshold, cause the materials-handling vehicle to perform the action as requested by the operator without modification to reduce the magnitude of the force.