ALEXANDRIA, Va., Feb. 17 -- United States Patent no. 12,551,775, issued on Feb. 17.
"Spring lock for skate wheel" was invented by Ching-Ho Yeh (Guangdong, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "A spring lock for a skate wheel includes a housing including opposite first and second holes, and a third hole; a pin through the first and second holes and including first and second grooves; a button on the third hole; a back plate on a back of the housing; a first biasing member secured to the back plate; a stop member secured to the first groove; a sliding member having one end urging against the first biasing member and the other end contacting the button to slidably dispose on the second groove, th...