ALEXANDRIA, Va., May 26 -- United States Patent no. 12,636,714, issued on May 26, was assigned to GUANGZHOU INNOX TOOLS Co. LTD (Guangzhou, China).
"Quick change arbor" was invented by Xianghua Jin (Hangzhou, China) and Yunli Zhao (Guangzhou, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "The present invention provides a quick change arbor, which can realize quick replacements of tools such as drill bit, hole saw and batch head on electric drills. The quick change arbor comprises an arbor main body, a pulling ring and a locking part. In the present invention, the tool is positioned and installed in an assembling position through the arbor main body, and the locking part within the first guiding groove ...