US 12,392,113 B2
System, method, and machine for position determination of thumb bucket
Youzou Nakamoto, Akashi (JP); Keisuke Shirani, Akashi (JP); and Michio Aoki, Akashi (JP)
Assigned to Caterpillar SARL, Geneva (CH)
Filed by Caterpillar SARL, Geneva (CH)
Filed on Dec. 2, 2022, as Appl. No. 18/073,618.
Prior Publication US 2024/0183129 A1, Jun. 6, 2024
Int. Cl. E02F 9/26 (2006.01); E02F 3/413 (2006.01)
CPC E02F 9/26 (2013.01) [E02F 3/4135 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A work machine comprising:
a bucket attached to an end of a stick of the work machine as a work tool;
a thumb pivotally coupled to the end of the stick; and
processing circuitry configured to
determine a current task of the work machine among scooping an object by the bucket or grabbing the object by the bucket and the thumb, based on an angle of the bucket,
automatically switch a center of gravity position of payload based on the determined current task, and
calculate the payload with a parameter of the center of gravity position of the payload based on the determined current task.