ALEXANDRIA, Va., May 26 -- United States Patent no. 12,636,537, issued on May 26.
"Bicep curl device" was invented by Donald Domino (Cypress, Texas).
According to the abstract* released by the U.S. Patent & Trademark Office: "A bicep curl device is provided. In one embodiment, the device is comprised of a bar with ends that can receive and/or may be comprised of a weight. The weight may have ball bearings that allow rotation of the weight to indicate improper bicep curl form by causing the weights to swing if too much momentum is used. In a different embodiment, the device is only comprised of rotating weights that can be used with existing barbell types, wherein said weights rotate/swing during use if improper form or inappropriate weigh...