ALEXANDRIA, Va., Dec. 16 -- United States Patent no. 12,497,520, issued on Dec. 16, was assigned to Softball Security Systems LLC (Annandale, Va.).

"Non-injurious incapacitating device and method of use thereof" was invented by James Frank Klemic (Annandale, Va.) and Ravindra Anant Athale (Annandale, Va.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A non-injurious incapacitating device is provided that includes an exterior layer defining a contained volume. A primary effect is contained within the device that deploys to size at least 10 times that of the contained volume. A power supply and a sensor are provided. The sensor communicates a contact or proximity signal when the exterior layer contacts or is w...