ALEXANDRIA, Va., Nov. 6 -- United States Patent no. 12,461,001, issued on Nov. 4, was assigned to SHENYANG TIANXING TESTING INSTRUMENTS Co. LTD. (Shenyang, China).
"Electric-hydraulic Brinell hardness testing head and portable electric-hydraulic Brinell hardness tester" was invented by Luming Zhang (Shenyang, China), Xuwei Sun (Shenyang, China) and Xiao Hou (Shenyang, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "An electric-hydraulic Brinell hardness testing head and a portable electric-hydraulic Brinell hardness tester. A controller, a battery pack and a motor are mounted on a hydraulic integrated block, an electric plunger pump is mounted in the hydraulic integrated block, and a check valve is moun...