ALEXANDRIA, Va., Jan. 13 -- United States Patent no. 12,523,221, issued on Jan. 13, was assigned to ZHEJIANG UNIVERSITY (Hangzhou, China).

"Non-intrusive measurement method for dynamic characteristic of cylinder block in axial piston pump" was invented by Junhui Zhang (Hangzhou, China), Bing Xu (Hangzhou, China), Qi Zhao (Hangzhou, China), Haogong Xu (Hangzhou, China), Weidi Huang (Hangzhou, China) and Fei Lyu (Hangzhou, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "Provided is a dynamic characteristic measurement method for a cylinder block of a non-intrusive axial piston pump. The cylinder block is the main rotating component of the axial piston pump, and the dynamic characteristic of the cylinder b...