ALEXANDRIA, Va., March 24 -- United States Patent no. 12,584,810, issued on March 24, was assigned to WELTER'S Co. LTD. (Dou Liu City, Taiwan).
"Pressure gauge" was invented by Walter W. Hsu (Dou Liu City, Taiwan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A pressure gauge includes a first fastener, a second fastener, a rotation member, and a positioning module. The first fastener includes a guide portion having a first spiral section and a second spiral section. The second fastener is mounted on the bottom of the first fastener. The rotation member has a shaft provided with a protruding rib and a pointer. The positioning module includes a positioning block having an air hole, and a elastic member having ...