ALEXANDRIA, Va., Feb. 19 -- United States Patent no. 12,228,181, issued on Feb. 18.
"Disc brake piston retraction tool" was invented by Tian Shoei Wang (Taichung, Taiwan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A piston retraction tool is provided. The tool can be operated with one hand. When an operating handle is operated, the helical movements of a first external thread and a second external thread drive a first pressure plate and a second pressure plate to extend and move away from each other. First engaging pieces of first L-shaped elastic plates and second engaging pieces of second L-shaped elastic plates are distributed in the roots and on the crests of the first and second external threads. The...