ALEXANDRIA, Va., Dec. 2 -- United States Patent no. 12,484,686, issued on Dec. 2.
"Expandable carriers and backpacks" was invented by Shuyu Dong (San Francisco).
According to the abstract* released by the U.S. Patent & Trademark Office: "A backpack or carrier has a first and second shells each having a set of spaced apart openings. A first cord is threaded through the openings. The openings may or may not be laterally aligned with each other, and they may be formed by holes punched through the fabric of the carrier and reinforced by grommets. An additional second cord may be threaded through the openings on a second side. The second shell can be separable from the first shell by loosening the first cord and/or second cords. The first shel...