ALEXANDRIA, Va., March 31 -- United States Patent no. 12,589,847, issued on March 31, was assigned to PIONEER MATERIAL PRECISION TECH Co. LTD. (New Taipei City, Taiwan).
"Biomimetic aquatic device" was invented by Chih-Sheng Chen (New Taipei City, Taiwan) and Ching-Hung Liu (New Taipei City, Taiwan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A biomimetic aquatic device includes a housing, a driving module, a cam, and a weight unit. The driving module is disposed in a receiving space of the housing, and includes a driving shaft rotatable about its own axis. The cam is mounted co-rotatably to the driving shaft, and has a cam groove formed in an outer surface of the cam and having at least a portion that ext...