US Patent Issued to SUBARU on Sept. 15 for "Collet bush and tool driving device" (Japanese Inventors)

ALEXANDRIA, Va., Sept. 15 -- United States Patent no. 12,734,590, issued on Sept. 15, was assigned to SUBARU Corp. (Tokyo).

"Collet bush and tool driving device" was invented by Ryohei Ono (Tokyo), Masao Watanabe (Tokyo), Hiroyuki Sugawara (Tokyo), Rei Nakamoto (Tokyo) and Tatsuo Nakahata (Tokyo).

According to the abstract* released by the U.S. Patent & Trademark Office: "A collet bush includes a tapered cylindrical outer surface, a cylindrical inner surface and a flow path. The collet bush is to be inserted into a concentric collet that is attached to a handheld tool driving device in order to position the tool driving device to a workpiece. The tool driving device holds, rotates and feeds a tool. The tool driving device has a function t...