ALEXANDRIA, Va., March 26 -- United States Patent no. 12,257,708, issued on March 25, was assigned to Delta Electronics Inc. (Taoyuan, Taiwan).
"Robotic arm calibration method" was invented by Chi-Huan Shao (Taoyuan, Taiwan), Chih-Ming Hsu (Taoyuan, Taiwan), Chi-Shun Chang (Taoyuan, Taiwan) and Hung-Sheng Chang (Taoyuan, Taiwan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A three-dimensional measuring device includes a ball-shaped structure, an X-axis measuring module, a Y-axis measuring module and a Z-axis measuring module. The ball-shaped structure is moved and/or rotated in response to a movement of a movable object. The X-axis measuring module includes a first measuring structure and a first position s...