US Patent Issued on March 4 for "Hand tool with replaceable workpiece head" (Chinese Inventor)

ALEXANDRIA, Va., March 5 -- United States Patent no. 12,240,138, issued on March 4.

"Hand tool with replaceable workpiece head" was invented by Yepeng Cai (Guangdong, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "A hand tool with a replaceable workpiece head includes a handle and a workpiece head. A rear end of the workpiece head is provided with an insertion block. A front end surface of the handle is provided with an insertion hole. The insertion block of the workpiece head is inserted into the insertion hole. A side wall of the handle is provided with a receiving slot which is communicated with the insertion hole. A rear end of the insertion block is provided with a locking part. The receiving slot...