ALEXANDRIA, Va., July 28 -- United States Patent no. 12,690,636, issued on July 28, was assigned to Milwaukee Electric Tool Corp. (Brookfield, Wis.).

"Protective cap" was invented by Michael James Brock (Sussex, Wis.) and Aqheel Mohammad (Brookfield, Wis.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A protective cap including an outer shell and an impact absorbing liner are constructed of materials designed to provide impact protection to a wearer. In some embodiments, the outer shell includes an outer surface pattern and/or an inner surface pattern to provide better grip and reduce rotation between the outer shell and the impact absorbing liner and/or the outer shell and a hat the user wears to cover the ...