ALEXANDRIA, Va., Oct. 21 -- United States Patent no. 12,440,718, issued on Oct. 14, was assigned to Blix Strength LLC (Spring City, Pa.).
"Portable and variable exercise device" was invented by Dawn T. Gulick (Spring City, Pa.), Zachary John Pelli (Philadelphia) and Thomas D. Kauffman (Glenside, Pa.).
According to the abstract* released by the U.S. Patent & Trademark Office: "The apparatus provides an exercise device that is portable, versatile, and enables the user to match the resistance of the device with the normal physiologic length-tension relationship of skeletal muscle. The device adds resistance in the form of cartridges that are stackable to summate resistance and can connect to a variety of attachments for use with arms, legs, ...