Patent ID: 9194099
Filing Date: 2015-11-24
Classification: E02F

Abstract:
1. An implement system for a machine having a stick member with a nose end and a mounting bracket, the implement system comprising: a thumb pivotally connected to the nose end of the stick member by a nose pin having a nose pin central axis; and a thumb actuator operatively connected between the mounting bracket of the stick member and the thumb to move the thumb between a fully retracted position and a fully extended position, wherein a first end of the thumb actuator is pivotally connected to the mounting bracket by a bracket pin having a bracket pin central axis and a second end of the thumb actuator is pivotally connected to the thumb by a thumb power pin having a thumb power pin central axis, and wherein the implement system has a Retracted Thumb Kinematic (RTK) Factor defined as follows: where B is a bracket positioning length from the nose pin central axis to the bracket pin central axis, BT is a thumb power pin length from the bracket pin central axis to the thumb power pin central axis when the thumb is in the fully retracted position, and P is a thumb moment arm length from the nose pin central axis to the thumb power pin central axis, with the RTK Factor having a value within a range having a lower limit of approximately 24.0 and an upper limit of approximately 28.0.