Abstract
This patent application has not been assigned to a company or institution.The following quote was obtained by the news editors from the background information supplied bythe inventors: ““The present disclosure relates to a robot system.“In some cases, a robot arm is caused to perform work similar to that performed by a human. In sucha robot arm, a plurality of arm elements are coupled by joints. In order to smooth the movement of thejoint, as described in JP-A-2020-116716, a lubricant is used for an actuator provided in the joint.