ALEXANDRIA, Va., June 19 -- United States Patent no. 12,330,010, issued on June 17.

"Free motion swing arm" was invented by Shaun Crandall (Las Cruces, N.M.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A free-motion swing arm includes a rack mount; a swivel joint; a hollow tubular arm; and a U bracket with a handle and a weight bearing post extending from opposite surfaces. The rack mount has a handle and mounts on an exercise rack. The swivel joint includes a bearing and a mounting plate, mounts on the rack mount, and rotates about a vertical axis. The arm is mounted to the mounting plate, rotates about a horizontal axis, and is reversibly lockable in multiple positions. The U bracket is mounted to the ar...